Significantly reduce the size of generated code for the opengl wrappers

Use some macro magic to declare the opengl symbols and use that
to call getProcAddress in a loop instead of doing it individually
for each method.

Cuts the amount of generated object code down from 300 to around 50k.

Change-Id: I386d278fde41a1a30827c6232e79f9156090f8b0
Reviewed-by: Laszlo Agocs <laszlo.agocs@theqtcompany.com>
Reviewed-by: Sean Harmer <sean.harmer@kdab.com>

1 files changed, 116 insertions, 1581 deletions

diff --git a/src/gui/opengl/qopenglversionfunctions.cpp b/src/gui/opengl/qopenglversionfunctions.cpp
index 89f066163a..ad44ae9b23 100644
--- a/src/gui/opengl/qopenglversionfunctions.cpp
+++ b/src/gui/opengl/qopenglversionfunctions.cpp
@@ -1,6 +1,7 @@
 /****************************************************************************
 **
 ** Copyright (C) 2013 Klaralvdalens Datakonsult AB (KDAB)
+** Copyright (C) 2016 The Qt Company Ltd.
 ** Contact: https://www.qt.io/licensing/
 **
 ** This file is part of the QtGui module of the Qt Toolkit.
@@ -52,6 +53,38 @@
 
 QT_BEGIN_NAMESPACE
 
+#define QT_OPENGL_COUNT_FUNCTIONS(ret, name, args) +1
+#define QT_OPENGL_FUNCTION_NAMES(ret, name, args) \
+    "gl"#name"\0"
+#define QT_OPENGL_IMPLEMENT(CLASS, FUNCTIONS) \
+void CLASS::init() \
+{ \
+    const char *names = FUNCTIONS(QT_OPENGL_FUNCTION_NAMES); \
+    const char *name = names; \
+    for (int i = 0; i < FUNCTIONS(QT_OPENGL_COUNT_FUNCTIONS); ++i) { \
+        functions[i] = context->getProcAddress(name); \
+        name += strlen(name) + 1; \
+    } \
+}
+
+#ifdef Q_OS_WIN
+#define QT_OPENGL_IMPLEMENT_WIN(CLASS, FUNCTIONS) \
+void CLASS::init() \
+{ \
+    HMODULE handle = static_cast<HMODULE>(QOpenGLContext::openGLModuleHandle()); \
+    if (!handle) \
+        handle = GetModuleHandleA("opengl32.dll"); \
+    const char *names = FUNCTIONS(QT_OPENGL_FUNCTION_NAMES); \
+    const char *name = names; \
+    for (int i = 0; i < FUNCTIONS(QT_OPENGL_COUNT_FUNCTIONS); ++i) { \
+        functions[i] = (QFunctionPointer)GetProcAddress(handle, name); \
+        name += strlen(name) + 1; \
+    } \
+}
+#else
+#define QT_OPENGL_IMPLEMENT_WIN QT_OPENGL_IMPLEMENT
+#endif
+
 QOpenGLVersionFunctionsBackend *QAbstractOpenGLFunctionsPrivate::functionsBackend(QOpenGLContext *context,
                                                                                   const QOpenGLVersionStatus &v)
 {
@@ -261,112 +294,12 @@ QOpenGLContext *QAbstractOpenGLFunctions::owningContext() const
 QOpenGLFunctions_1_0_CoreBackend::QOpenGLFunctions_1_0_CoreBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 1.0 core functions
-#if defined(Q_OS_WIN)
-    HMODULE handle = static_cast<HMODULE>(QOpenGLContext::openGLModuleHandle());
-    if (!handle)
-        handle = GetModuleHandleA("opengl32.dll");
-    Viewport = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLsizei , GLsizei )>(GetProcAddress(handle, "glViewport"));
-    DepthRange = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble )>(GetProcAddress(handle, "glDepthRange"));
-    IsEnabled = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLenum )>(GetProcAddress(handle, "glIsEnabled"));
-    GetTexLevelParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLenum , GLint *)>(GetProcAddress(handle, "glGetTexLevelParameteriv"));
-    GetTexLevelParameterfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLenum , GLfloat *)>(GetProcAddress(handle, "glGetTexLevelParameterfv"));
-    GetTexParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *)>(GetProcAddress(handle, "glGetTexParameteriv"));
-    GetTexParameterfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat *)>(GetProcAddress(handle, "glGetTexParameterfv"));
-    GetTexImage = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLenum , GLenum , GLvoid *)>(GetProcAddress(handle, "glGetTexImage"));
-    GetString = reinterpret_cast<const GLubyte * (QOPENGLF_APIENTRYP)(GLenum )>(GetProcAddress(handle, "glGetString"));
-    GetIntegerv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint *)>(GetProcAddress(handle, "glGetIntegerv"));
-    GetFloatv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat *)>(GetProcAddress(handle, "glGetFloatv"));
-    GetError = reinterpret_cast<GLenum (QOPENGLF_APIENTRYP)()>(GetProcAddress(handle, "glGetError"));
-    GetDoublev = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLdouble *)>(GetProcAddress(handle, "glGetDoublev"));
-    GetBooleanv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLboolean *)>(GetProcAddress(handle, "glGetBooleanv"));
-    ReadPixels = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLsizei , GLsizei , GLenum , GLenum , GLvoid *)>(GetProcAddress(handle, "glReadPixels"));
-    ReadBuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(GetProcAddress(handle, "glReadBuffer"));
-    PixelStorei = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint )>(GetProcAddress(handle, "glPixelStorei"));
-    PixelStoref = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat )>(GetProcAddress(handle, "glPixelStoref"));
-    DepthFunc = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(GetProcAddress(handle, "glDepthFunc"));
-    StencilOp = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLenum )>(GetProcAddress(handle, "glStencilOp"));
-    StencilFunc = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLuint )>(GetProcAddress(handle, "glStencilFunc"));
-    LogicOp = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(GetProcAddress(handle, "glLogicOp"));
-    BlendFunc = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum )>(GetProcAddress(handle, "glBlendFunc"));
-    Flush = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(GetProcAddress(handle, "glFlush"));
-    Finish = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(GetProcAddress(handle, "glFinish"));
-    Enable = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(GetProcAddress(handle, "glEnable"));
-    Disable = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(GetProcAddress(handle, "glDisable"));
-    DepthMask = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLboolean )>(GetProcAddress(handle, "glDepthMask"));
-    ColorMask = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLboolean , GLboolean , GLboolean , GLboolean )>(GetProcAddress(handle, "glColorMask"));
-    StencilMask = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(GetProcAddress(handle, "glStencilMask"));
-    ClearDepth = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble )>(GetProcAddress(handle, "glClearDepth"));
-    ClearStencil = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint )>(GetProcAddress(handle, "glClearStencil"));
-    ClearColor = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat , GLfloat )>(GetProcAddress(handle, "glClearColor"));
-    Clear = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLbitfield )>(GetProcAddress(handle, "glClear"));
-    DrawBuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(GetProcAddress(handle, "glDrawBuffer"));
-    TexImage2D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLsizei , GLsizei , GLint , GLenum , GLenum , const GLvoid *)>(GetProcAddress(handle, "glTexImage2D"));
-    TexImage1D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLsizei , GLint , GLenum , GLenum , const GLvoid *)>(GetProcAddress(handle, "glTexImage1D"));
-    TexParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLint *)>(GetProcAddress(handle, "glTexParameteriv"));
-    TexParameteri = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint )>(GetProcAddress(handle, "glTexParameteri"));
-    TexParameterfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLfloat *)>(GetProcAddress(handle, "glTexParameterfv"));
-    TexParameterf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat )>(GetProcAddress(handle, "glTexParameterf"));
-    Scissor = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLsizei , GLsizei )>(GetProcAddress(handle, "glScissor"));
-    PolygonMode = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum )>(GetProcAddress(handle, "glPolygonMode"));
-    PointSize = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat )>(GetProcAddress(handle, "glPointSize"));
-    LineWidth = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat )>(GetProcAddress(handle, "glLineWidth"));
-    Hint = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum )>(GetProcAddress(handle, "glHint"));
-    FrontFace = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(GetProcAddress(handle, "glFrontFace"));
-    CullFace = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(GetProcAddress(handle, "glCullFace"));
-#else
-    Viewport = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLsizei , GLsizei )>(context->getProcAddress("glViewport"));
-    DepthRange = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble )>(context->getProcAddress("glDepthRange"));
-    IsEnabled = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glIsEnabled"));
-    GetTexLevelParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLenum , GLint *)>(context->getProcAddress("glGetTexLevelParameteriv"));
-    GetTexLevelParameterfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLenum , GLfloat *)>(context->getProcAddress("glGetTexLevelParameterfv"));
-    GetTexParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *)>(context->getProcAddress("glGetTexParameteriv"));
-    GetTexParameterfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat *)>(context->getProcAddress("glGetTexParameterfv"));
-    GetTexImage = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLenum , GLenum , GLvoid *)>(context->getProcAddress("glGetTexImage"));
-    GetString = reinterpret_cast<const GLubyte * (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glGetString"));
-    GetIntegerv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint *)>(context->getProcAddress("glGetIntegerv"));
-    GetFloatv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat *)>(context->getProcAddress("glGetFloatv"));
-    GetError = reinterpret_cast<GLenum (QOPENGLF_APIENTRYP)()>(context->getProcAddress("glGetError"));
-    GetDoublev = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLdouble *)>(context->getProcAddress("glGetDoublev"));
-    GetBooleanv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLboolean *)>(context->getProcAddress("glGetBooleanv"));
-    ReadPixels = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLsizei , GLsizei , GLenum , GLenum , GLvoid *)>(context->getProcAddress("glReadPixels"));
-    ReadBuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glReadBuffer"));
-    PixelStorei = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint )>(context->getProcAddress("glPixelStorei"));
-    PixelStoref = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat )>(context->getProcAddress("glPixelStoref"));
-    DepthFunc = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glDepthFunc"));
-    StencilOp = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLenum )>(context->getProcAddress("glStencilOp"));
-    StencilFunc = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLuint )>(context->getProcAddress("glStencilFunc"));
-    LogicOp = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glLogicOp"));
-    BlendFunc = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum )>(context->getProcAddress("glBlendFunc"));
-    Flush = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(context->getProcAddress("glFlush"));
-    Finish = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(context->getProcAddress("glFinish"));
-    Enable = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glEnable"));
-    Disable = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glDisable"));
-    DepthMask = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLboolean )>(context->getProcAddress("glDepthMask"));
-    ColorMask = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLboolean , GLboolean , GLboolean , GLboolean )>(context->getProcAddress("glColorMask"));
-    StencilMask = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glStencilMask"));
-    ClearDepth = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble )>(context->getProcAddress("glClearDepth"));
-    ClearStencil = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint )>(context->getProcAddress("glClearStencil"));
-    ClearColor = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glClearColor"));
-    Clear = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLbitfield )>(context->getProcAddress("glClear"));
-    DrawBuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glDrawBuffer"));
-    TexImage2D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLsizei , GLsizei , GLint , GLenum , GLenum , const GLvoid *)>(context->getProcAddress("glTexImage2D"));
-    TexImage1D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLsizei , GLint , GLenum , GLenum , const GLvoid *)>(context->getProcAddress("glTexImage1D"));
-    TexParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLint *)>(context->getProcAddress("glTexParameteriv"));
-    TexParameteri = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint )>(context->getProcAddress("glTexParameteri"));
-    TexParameterfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLfloat *)>(context->getProcAddress("glTexParameterfv"));
-    TexParameterf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat )>(context->getProcAddress("glTexParameterf"));
-    Scissor = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLsizei , GLsizei )>(context->getProcAddress("glScissor"));
-    PolygonMode = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum )>(context->getProcAddress("glPolygonMode"));
-    PointSize = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat )>(context->getProcAddress("glPointSize"));
-    LineWidth = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat )>(context->getProcAddress("glLineWidth"));
-    Hint = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum )>(context->getProcAddress("glHint"));
-    FrontFace = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glFrontFace"));
-    CullFace = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glCullFace"));
-#endif
-
+    init();
 }
 
+// OpenGL 1.0 core functions
+QT_OPENGL_IMPLEMENT_WIN(QOpenGLFunctions_1_0_CoreBackend, QT_OPENGL_1_0_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_1_0_CoreBackend::versionStatus()
 {
     return QOpenGLVersionStatus(1, 0, QOpenGLVersionStatus::CoreStatus);
@@ -375,48 +308,11 @@ QOpenGLVersionStatus QOpenGLFunctions_1_0_CoreBackend::versionStatus()
 QOpenGLFunctions_1_1_CoreBackend::QOpenGLFunctions_1_1_CoreBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 1.1 core functions
-#if defined(Q_OS_WIN)
-    HMODULE handle = static_cast<HMODULE>(QOpenGLContext::openGLModuleHandle());
-    if (!handle)
-        handle = GetModuleHandleA("opengl32.dll");
-    Indexubv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLubyte *)>(GetProcAddress(handle, "glIndexubv"));
-    Indexub = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLubyte )>(GetProcAddress(handle, "glIndexub"));
-    IsTexture = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLuint )>(GetProcAddress(handle, "glIsTexture"));
-    GenTextures = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLuint *)>(GetProcAddress(handle, "glGenTextures"));
-    DeleteTextures = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , const GLuint *)>(GetProcAddress(handle, "glDeleteTextures"));
-    BindTexture = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(GetProcAddress(handle, "glBindTexture"));
-    TexSubImage2D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLint , GLsizei , GLsizei , GLenum , GLenum , const GLvoid *)>(GetProcAddress(handle, "glTexSubImage2D"));
-    TexSubImage1D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLsizei , GLenum , GLenum , const GLvoid *)>(GetProcAddress(handle, "glTexSubImage1D"));
-    CopyTexSubImage2D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLint , GLint , GLint , GLsizei , GLsizei )>(GetProcAddress(handle, "glCopyTexSubImage2D"));
-    CopyTexSubImage1D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLint , GLint , GLsizei )>(GetProcAddress(handle, "glCopyTexSubImage1D"));
-    CopyTexImage2D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLenum , GLint , GLint , GLsizei , GLsizei , GLint )>(GetProcAddress(handle, "glCopyTexImage2D"));
-    CopyTexImage1D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLenum , GLint , GLint , GLsizei , GLint )>(GetProcAddress(handle, "glCopyTexImage1D"));
-    PolygonOffset = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat )>(GetProcAddress(handle, "glPolygonOffset"));
-    GetPointerv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLvoid * *)>(GetProcAddress(handle, "glGetPointerv"));
-    DrawElements = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLenum , const GLvoid *)>(GetProcAddress(handle, "glDrawElements"));
-    DrawArrays = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLsizei )>(GetProcAddress(handle, "glDrawArrays"));
-#else
-    Indexubv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLubyte *)>(context->getProcAddress("glIndexubv"));
-    Indexub = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLubyte )>(context->getProcAddress("glIndexub"));
-    IsTexture = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glIsTexture"));
-    GenTextures = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLuint *)>(context->getProcAddress("glGenTextures"));
-    DeleteTextures = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , const GLuint *)>(context->getProcAddress("glDeleteTextures"));
-    BindTexture = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glBindTexture"));
-    TexSubImage2D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLint , GLsizei , GLsizei , GLenum , GLenum , const GLvoid *)>(context->getProcAddress("glTexSubImage2D"));
-    TexSubImage1D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLsizei , GLenum , GLenum , const GLvoid *)>(context->getProcAddress("glTexSubImage1D"));
-    CopyTexSubImage2D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLint , GLint , GLint , GLsizei , GLsizei )>(context->getProcAddress("glCopyTexSubImage2D"));
-    CopyTexSubImage1D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLint , GLint , GLsizei )>(context->getProcAddress("glCopyTexSubImage1D"));
-    CopyTexImage2D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLenum , GLint , GLint , GLsizei , GLsizei , GLint )>(context->getProcAddress("glCopyTexImage2D"));
-    CopyTexImage1D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLenum , GLint , GLint , GLsizei , GLint )>(context->getProcAddress("glCopyTexImage1D"));
-    PolygonOffset = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat )>(context->getProcAddress("glPolygonOffset"));
-    GetPointerv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLvoid * *)>(context->getProcAddress("glGetPointerv"));
-    DrawElements = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLenum , const GLvoid *)>(context->getProcAddress("glDrawElements"));
-    DrawArrays = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLsizei )>(context->getProcAddress("glDrawArrays"));
-#endif
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT_WIN(QOpenGLFunctions_1_1_CoreBackend, QT_OPENGL_1_1_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_1_1_CoreBackend::versionStatus()
 {
     return QOpenGLVersionStatus(1, 1, QOpenGLVersionStatus::CoreStatus);
@@ -425,16 +321,11 @@ QOpenGLVersionStatus QOpenGLFunctions_1_1_CoreBackend::versionStatus()
 QOpenGLFunctions_1_2_CoreBackend::QOpenGLFunctions_1_2_CoreBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 1.2 core functions
-    CopyTexSubImage3D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLint , GLint , GLint , GLint , GLsizei , GLsizei )>(context->getProcAddress("glCopyTexSubImage3D"));
-    TexSubImage3D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLint , GLint , GLsizei , GLsizei , GLsizei , GLenum , GLenum , const GLvoid *)>(context->getProcAddress("glTexSubImage3D"));
-    TexImage3D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLsizei , GLsizei , GLsizei , GLint , GLenum , GLenum , const GLvoid *)>(context->getProcAddress("glTexImage3D"));
-    DrawRangeElements = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint , GLuint , GLsizei , GLenum , const GLvoid *)>(context->getProcAddress("glDrawRangeElements"));
-    BlendEquation = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glBlendEquation"));
-    BlendColor = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glBlendColor"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_1_2_CoreBackend, QT_OPENGL_1_2_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_1_2_CoreBackend::versionStatus()
 {
     return QOpenGLVersionStatus(1, 2, QOpenGLVersionStatus::CoreStatus);
@@ -443,37 +334,21 @@ QOpenGLVersionStatus QOpenGLFunctions_1_2_CoreBackend::versionStatus()
 QOpenGLFunctions_1_3_CoreBackend::QOpenGLFunctions_1_3_CoreBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 1.3 core functions
-    GetCompressedTexImage = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLvoid *)>(context->getProcAddress("glGetCompressedTexImage"));
-    CompressedTexSubImage1D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLsizei , GLenum , GLsizei , const GLvoid *)>(context->getProcAddress("glCompressedTexSubImage1D"));
-    CompressedTexSubImage2D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLint , GLsizei , GLsizei , GLenum , GLsizei , const GLvoid *)>(context->getProcAddress("glCompressedTexSubImage2D"));
-    CompressedTexSubImage3D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLint , GLint , GLsizei , GLsizei , GLsizei , GLenum , GLsizei , const GLvoid *)>(context->getProcAddress("glCompressedTexSubImage3D"));
-    CompressedTexImage1D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLenum , GLsizei , GLint , GLsizei , const GLvoid *)>(context->getProcAddress("glCompressedTexImage1D"));
-    CompressedTexImage2D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLenum , GLsizei , GLsizei , GLint , GLsizei , const GLvoid *)>(context->getProcAddress("glCompressedTexImage2D"));
-    CompressedTexImage3D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLenum , GLsizei , GLsizei , GLsizei , GLint , GLsizei , const GLvoid *)>(context->getProcAddress("glCompressedTexImage3D"));
-    SampleCoverage = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLboolean )>(context->getProcAddress("glSampleCoverage"));
-    ActiveTexture = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glActiveTexture"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_1_3_CoreBackend, QT_OPENGL_1_3_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_1_3_CoreBackend::versionStatus()
 {
     return QOpenGLVersionStatus(1, 3, QOpenGLVersionStatus::CoreStatus);
 }
 
-QOpenGLFunctions_1_4_CoreBackend::QOpenGLFunctions_1_4_CoreBackend(QOpenGLContext *context)
-    : QOpenGLVersionFunctionsBackend(context)
-{
-    // OpenGL 1.4 core functions
-    PointParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLint *)>(context->getProcAddress("glPointParameteriv"));
-    PointParameteri = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint )>(context->getProcAddress("glPointParameteri"));
-    PointParameterfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLfloat *)>(context->getProcAddress("glPointParameterfv"));
-    PointParameterf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat )>(context->getProcAddress("glPointParameterf"));
-    MultiDrawElements = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLsizei *, GLenum , const GLvoid* const *, GLsizei )>(context->getProcAddress("glMultiDrawElements"));
-    MultiDrawArrays = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLint *, const GLsizei *, GLsizei )>(context->getProcAddress("glMultiDrawArrays"));
-    BlendFuncSeparate = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLenum , GLenum )>(context->getProcAddress("glBlendFuncSeparate"));
+QOpenGLFunctions_1_4_CoreBackend::QOpenGLFunctions_1_4_CoreBackend(QOpenGLContext *c)
+    : QOpenGLVersionFunctionsBackend(c)
+{ init(); }
 
-}
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_1_4_CoreBackend, QT_OPENGL_1_4_FUNCTIONS);
 
 QOpenGLVersionStatus QOpenGLFunctions_1_4_CoreBackend::versionStatus()
 {
@@ -483,29 +358,11 @@ QOpenGLVersionStatus QOpenGLFunctions_1_4_CoreBackend::versionStatus()
 QOpenGLFunctions_1_5_CoreBackend::QOpenGLFunctions_1_5_CoreBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 1.5 core functions
-    GetBufferPointerv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLvoid* *)>(context->getProcAddress("glGetBufferPointerv"));
-    GetBufferParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *)>(context->getProcAddress("glGetBufferParameteriv"));
-    UnmapBuffer = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glUnmapBuffer"));
-    MapBuffer = reinterpret_cast<GLvoid* (QOPENGLF_APIENTRYP)(GLenum , GLenum )>(context->getProcAddress("glMapBuffer"));
-    GetBufferSubData = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLintptr , GLsizeiptr , GLvoid *)>(context->getProcAddress("glGetBufferSubData"));
-    BufferSubData = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLintptr , GLsizeiptr , const GLvoid *)>(context->getProcAddress("glBufferSubData"));
-    BufferData = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizeiptr , const GLvoid *, GLenum )>(context->getProcAddress("glBufferData"));
-    IsBuffer = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glIsBuffer"));
-    GenBuffers = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLuint *)>(context->getProcAddress("glGenBuffers"));
-    DeleteBuffers = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , const GLuint *)>(context->getProcAddress("glDeleteBuffers"));
-    BindBuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glBindBuffer"));
-    GetQueryObjectuiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLuint *)>(context->getProcAddress("glGetQueryObjectuiv"));
-    GetQueryObjectiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint *)>(context->getProcAddress("glGetQueryObjectiv"));
-    GetQueryiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *)>(context->getProcAddress("glGetQueryiv"));
-    EndQuery = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glEndQuery"));
-    BeginQuery = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glBeginQuery"));
-    IsQuery = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glIsQuery"));
-    DeleteQueries = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , const GLuint *)>(context->getProcAddress("glDeleteQueries"));
-    GenQueries = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLuint *)>(context->getProcAddress("glGenQueries"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_1_5_CoreBackend, QT_OPENGL_1_5_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_1_5_CoreBackend::versionStatus()
 {
     return QOpenGLVersionStatus(1, 5, QOpenGLVersionStatus::CoreStatus);
@@ -514,103 +371,11 @@ QOpenGLVersionStatus QOpenGLFunctions_1_5_CoreBackend::versionStatus()
 QOpenGLFunctions_2_0_CoreBackend::QOpenGLFunctions_2_0_CoreBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 2.0 core functions
-    VertexAttribPointer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLenum , GLboolean , GLsizei , const GLvoid *)>(context->getProcAddress("glVertexAttribPointer"));
-    VertexAttrib4usv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLushort *)>(context->getProcAddress("glVertexAttrib4usv"));
-    VertexAttrib4uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLuint *)>(context->getProcAddress("glVertexAttrib4uiv"));
-    VertexAttrib4ubv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLubyte *)>(context->getProcAddress("glVertexAttrib4ubv"));
-    VertexAttrib4sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLshort *)>(context->getProcAddress("glVertexAttrib4sv"));
-    VertexAttrib4s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLshort , GLshort , GLshort , GLshort )>(context->getProcAddress("glVertexAttrib4s"));
-    VertexAttrib4iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLint *)>(context->getProcAddress("glVertexAttrib4iv"));
-    VertexAttrib4fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLfloat *)>(context->getProcAddress("glVertexAttrib4fv"));
-    VertexAttrib4f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLfloat , GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glVertexAttrib4f"));
-    VertexAttrib4dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLdouble *)>(context->getProcAddress("glVertexAttrib4dv"));
-    VertexAttrib4d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLdouble , GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glVertexAttrib4d"));
-    VertexAttrib4bv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLbyte *)>(context->getProcAddress("glVertexAttrib4bv"));
-    VertexAttrib4Nusv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLushort *)>(context->getProcAddress("glVertexAttrib4Nusv"));
-    VertexAttrib4Nuiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLuint *)>(context->getProcAddress("glVertexAttrib4Nuiv"));
-    VertexAttrib4Nubv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLubyte *)>(context->getProcAddress("glVertexAttrib4Nubv"));
-    VertexAttrib4Nub = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLubyte , GLubyte , GLubyte , GLubyte )>(context->getProcAddress("glVertexAttrib4Nub"));
-    VertexAttrib4Nsv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLshort *)>(context->getProcAddress("glVertexAttrib4Nsv"));
-    VertexAttrib4Niv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLint *)>(context->getProcAddress("glVertexAttrib4Niv"));
-    VertexAttrib4Nbv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLbyte *)>(context->getProcAddress("glVertexAttrib4Nbv"));
-    VertexAttrib3sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLshort *)>(context->getProcAddress("glVertexAttrib3sv"));
-    VertexAttrib3s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLshort , GLshort , GLshort )>(context->getProcAddress("glVertexAttrib3s"));
-    VertexAttrib3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLfloat *)>(context->getProcAddress("glVertexAttrib3fv"));
-    VertexAttrib3f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glVertexAttrib3f"));
-    VertexAttrib3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLdouble *)>(context->getProcAddress("glVertexAttrib3dv"));
-    VertexAttrib3d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glVertexAttrib3d"));
-    VertexAttrib2sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLshort *)>(context->getProcAddress("glVertexAttrib2sv"));
-    VertexAttrib2s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLshort , GLshort )>(context->getProcAddress("glVertexAttrib2s"));
-    VertexAttrib2fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLfloat *)>(context->getProcAddress("glVertexAttrib2fv"));
-    VertexAttrib2f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLfloat , GLfloat )>(context->getProcAddress("glVertexAttrib2f"));
-    VertexAttrib2dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLdouble *)>(context->getProcAddress("glVertexAttrib2dv"));
-    VertexAttrib2d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLdouble , GLdouble )>(context->getProcAddress("glVertexAttrib2d"));
-    VertexAttrib1sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLshort *)>(context->getProcAddress("glVertexAttrib1sv"));
-    VertexAttrib1s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLshort )>(context->getProcAddress("glVertexAttrib1s"));
-    VertexAttrib1fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLfloat *)>(context->getProcAddress("glVertexAttrib1fv"));
-    VertexAttrib1f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLfloat )>(context->getProcAddress("glVertexAttrib1f"));
-    VertexAttrib1dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLdouble *)>(context->getProcAddress("glVertexAttrib1dv"));
-    VertexAttrib1d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLdouble )>(context->getProcAddress("glVertexAttrib1d"));
-    ValidateProgram = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glValidateProgram"));
-    UniformMatrix4fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , GLboolean , const GLfloat *)>(context->getProcAddress("glUniformMatrix4fv"));
-    UniformMatrix3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , GLboolean , const GLfloat *)>(context->getProcAddress("glUniformMatrix3fv"));
-    UniformMatrix2fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , GLboolean , const GLfloat *)>(context->getProcAddress("glUniformMatrix2fv"));
-    Uniform4iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , const GLint *)>(context->getProcAddress("glUniform4iv"));
-    Uniform3iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , const GLint *)>(context->getProcAddress("glUniform3iv"));
-    Uniform2iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , const GLint *)>(context->getProcAddress("glUniform2iv"));
-    Uniform1iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , const GLint *)>(context->getProcAddress("glUniform1iv"));
-    Uniform4fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , const GLfloat *)>(context->getProcAddress("glUniform4fv"));
-    Uniform3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , const GLfloat *)>(context->getProcAddress("glUniform3fv"));
-    Uniform2fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , const GLfloat *)>(context->getProcAddress("glUniform2fv"));
-    Uniform1fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , const GLfloat *)>(context->getProcAddress("glUniform1fv"));
-    Uniform4i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint , GLint , GLint )>(context->getProcAddress("glUniform4i"));
-    Uniform3i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint , GLint )>(context->getProcAddress("glUniform3i"));
-    Uniform2i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint )>(context->getProcAddress("glUniform2i"));
-    Uniform1i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint )>(context->getProcAddress("glUniform1i"));
-    Uniform4f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLfloat , GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glUniform4f"));
-    Uniform3f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glUniform3f"));
-    Uniform2f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLfloat , GLfloat )>(context->getProcAddress("glUniform2f"));
-    Uniform1f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLfloat )>(context->getProcAddress("glUniform1f"));
-    UseProgram = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glUseProgram"));
-    ShaderSource = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , const GLchar* const *, const GLint *)>(context->getProcAddress("glShaderSource"));
-    LinkProgram = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glLinkProgram"));
-    IsShader = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glIsShader"));
-    IsProgram = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glIsProgram"));
-    GetVertexAttribPointerv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLvoid* *)>(context->getProcAddress("glGetVertexAttribPointerv"));
-    GetVertexAttribiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint *)>(context->getProcAddress("glGetVertexAttribiv"));
-    GetVertexAttribfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLfloat *)>(context->getProcAddress("glGetVertexAttribfv"));
-    GetVertexAttribdv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLdouble *)>(context->getProcAddress("glGetVertexAttribdv"));
-    GetUniformiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint *)>(context->getProcAddress("glGetUniformiv"));
-    GetUniformfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLfloat *)>(context->getProcAddress("glGetUniformfv"));
-    GetUniformLocation = reinterpret_cast<GLint (QOPENGLF_APIENTRYP)(GLuint , const GLchar *)>(context->getProcAddress("glGetUniformLocation"));
-    GetShaderSource = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , GLsizei *, GLchar *)>(context->getProcAddress("glGetShaderSource"));
-    GetShaderInfoLog = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , GLsizei *, GLchar *)>(context->getProcAddress("glGetShaderInfoLog"));
-    GetShaderiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint *)>(context->getProcAddress("glGetShaderiv"));
-    GetProgramInfoLog = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , GLsizei *, GLchar *)>(context->getProcAddress("glGetProgramInfoLog"));
-    GetProgramiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint *)>(context->getProcAddress("glGetProgramiv"));
-    GetAttribLocation = reinterpret_cast<GLint (QOPENGLF_APIENTRYP)(GLuint , const GLchar *)>(context->getProcAddress("glGetAttribLocation"));
-    GetAttachedShaders = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , GLsizei *, GLuint *)>(context->getProcAddress("glGetAttachedShaders"));
-    GetActiveUniform = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLsizei , GLsizei *, GLint *, GLenum *, GLchar *)>(context->getProcAddress("glGetActiveUniform"));
-    GetActiveAttrib = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLsizei , GLsizei *, GLint *, GLenum *, GLchar *)>(context->getProcAddress("glGetActiveAttrib"));
-    EnableVertexAttribArray = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glEnableVertexAttribArray"));
-    DisableVertexAttribArray = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glDisableVertexAttribArray"));
-    DetachShader = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint )>(context->getProcAddress("glDetachShader"));
-    DeleteShader = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glDeleteShader"));
-    DeleteProgram = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glDeleteProgram"));
-    CreateShader = reinterpret_cast<GLuint (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glCreateShader"));
-    CreateProgram = reinterpret_cast<GLuint (QOPENGLF_APIENTRYP)()>(context->getProcAddress("glCreateProgram"));
-    CompileShader = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glCompileShader"));
-    BindAttribLocation = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , const GLchar *)>(context->getProcAddress("glBindAttribLocation"));
-    AttachShader = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint )>(context->getProcAddress("glAttachShader"));
-    StencilMaskSeparate = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glStencilMaskSeparate"));
-    StencilFuncSeparate = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint , GLuint )>(context->getProcAddress("glStencilFuncSeparate"));
-    StencilOpSeparate = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLenum , GLenum )>(context->getProcAddress("glStencilOpSeparate"));
-    DrawBuffers = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , const GLenum *)>(context->getProcAddress("glDrawBuffers"));
-    BlendEquationSeparate = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum )>(context->getProcAddress("glBlendEquationSeparate"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_2_0_CoreBackend, QT_OPENGL_2_0_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_2_0_CoreBackend::versionStatus()
 {
     return QOpenGLVersionStatus(2, 0, QOpenGLVersionStatus::CoreStatus);
@@ -619,16 +384,11 @@ QOpenGLVersionStatus QOpenGLFunctions_2_0_CoreBackend::versionStatus()
 QOpenGLFunctions_2_1_CoreBackend::QOpenGLFunctions_2_1_CoreBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 2.1 core functions
-    UniformMatrix4x3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , GLboolean , const GLfloat *)>(context->getProcAddress("glUniformMatrix4x3fv"));
-    UniformMatrix3x4fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , GLboolean , const GLfloat *)>(context->getProcAddress("glUniformMatrix3x4fv"));
-    UniformMatrix4x2fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , GLboolean , const GLfloat *)>(context->getProcAddress("glUniformMatrix4x2fv"));
-    UniformMatrix2x4fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , GLboolean , const GLfloat *)>(context->getProcAddress("glUniformMatrix2x4fv"));
-    UniformMatrix3x2fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , GLboolean , const GLfloat *)>(context->getProcAddress("glUniformMatrix3x2fv"));
-    UniformMatrix2x3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , GLboolean , const GLfloat *)>(context->getProcAddress("glUniformMatrix2x3fv"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_2_1_CoreBackend, QT_OPENGL_2_1_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_2_1_CoreBackend::versionStatus()
 {
     return QOpenGLVersionStatus(2, 1, QOpenGLVersionStatus::CoreStatus);
@@ -637,94 +397,11 @@ QOpenGLVersionStatus QOpenGLFunctions_2_1_CoreBackend::versionStatus()
 QOpenGLFunctions_3_0_CoreBackend::QOpenGLFunctions_3_0_CoreBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 3.0 core functions
-    IsVertexArray = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glIsVertexArray"));
-    GenVertexArrays = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLuint *)>(context->getProcAddress("glGenVertexArrays"));
-    DeleteVertexArrays = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , const GLuint *)>(context->getProcAddress("glDeleteVertexArrays"));
-    BindVertexArray = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glBindVertexArray"));
-    FlushMappedBufferRange = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLintptr , GLsizeiptr )>(context->getProcAddress("glFlushMappedBufferRange"));
-    MapBufferRange = reinterpret_cast<GLvoid* (QOPENGLF_APIENTRYP)(GLenum , GLintptr , GLsizeiptr , GLbitfield )>(context->getProcAddress("glMapBufferRange"));
-    FramebufferTextureLayer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLuint , GLint , GLint )>(context->getProcAddress("glFramebufferTextureLayer"));
-    RenderbufferStorageMultisample = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLenum , GLsizei , GLsizei )>(context->getProcAddress("glRenderbufferStorageMultisample"));
-    BlitFramebuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint , GLint , GLint , GLint , GLint , GLint , GLbitfield , GLenum )>(context->getProcAddress("glBlitFramebuffer"));
-    GenerateMipmap = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glGenerateMipmap"));
-    GetFramebufferAttachmentParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLenum , GLint *)>(context->getProcAddress("glGetFramebufferAttachmentParameteriv"));
-    FramebufferRenderbuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLenum , GLuint )>(context->getProcAddress("glFramebufferRenderbuffer"));
-    FramebufferTexture3D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLenum , GLuint , GLint , GLint )>(context->getProcAddress("glFramebufferTexture3D"));
-    FramebufferTexture2D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLenum , GLuint , GLint )>(context->getProcAddress("glFramebufferTexture2D"));
-    FramebufferTexture1D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLenum , GLuint , GLint )>(context->getProcAddress("glFramebufferTexture1D"));
-    CheckFramebufferStatus = reinterpret_cast<GLenum (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glCheckFramebufferStatus"));
-    GenFramebuffers = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLuint *)>(context->getProcAddress("glGenFramebuffers"));
-    DeleteFramebuffers = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , const GLuint *)>(context->getProcAddress("glDeleteFramebuffers"));
-    BindFramebuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glBindFramebuffer"));
-    IsFramebuffer = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glIsFramebuffer"));
-    GetRenderbufferParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *)>(context->getProcAddress("glGetRenderbufferParameteriv"));
-    RenderbufferStorage = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLsizei , GLsizei )>(context->getProcAddress("glRenderbufferStorage"));
-    GenRenderbuffers = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLuint *)>(context->getProcAddress("glGenRenderbuffers"));
-    DeleteRenderbuffers = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , const GLuint *)>(context->getProcAddress("glDeleteRenderbuffers"));
-    BindRenderbuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glBindRenderbuffer"));
-    IsRenderbuffer = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glIsRenderbuffer"));
-    GetStringi = reinterpret_cast<const GLubyte * (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glGetStringi"));
-    ClearBufferfi = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLfloat , GLint )>(context->getProcAddress("glClearBufferfi"));
-    ClearBufferfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , const GLfloat *)>(context->getProcAddress("glClearBufferfv"));
-    ClearBufferuiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , const GLuint *)>(context->getProcAddress("glClearBufferuiv"));
-    ClearBufferiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , const GLint *)>(context->getProcAddress("glClearBufferiv"));
-    GetTexParameterIuiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLuint *)>(context->getProcAddress("glGetTexParameterIuiv"));
-    GetTexParameterIiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *)>(context->getProcAddress("glGetTexParameterIiv"));
-    TexParameterIuiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLuint *)>(context->getProcAddress("glTexParameterIuiv"));
-    TexParameterIiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLint *)>(context->getProcAddress("glTexParameterIiv"));
-    Uniform4uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , const GLuint *)>(context->getProcAddress("glUniform4uiv"));
-    Uniform3uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , const GLuint *)>(context->getProcAddress("glUniform3uiv"));
-    Uniform2uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , const GLuint *)>(context->getProcAddress("glUniform2uiv"));
-    Uniform1uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , const GLuint *)>(context->getProcAddress("glUniform1uiv"));
-    Uniform4ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLuint , GLuint , GLuint , GLuint )>(context->getProcAddress("glUniform4ui"));
-    Uniform3ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLuint , GLuint , GLuint )>(context->getProcAddress("glUniform3ui"));
-    Uniform2ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLuint , GLuint )>(context->getProcAddress("glUniform2ui"));
-    Uniform1ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLuint )>(context->getProcAddress("glUniform1ui"));
-    GetFragDataLocation = reinterpret_cast<GLint (QOPENGLF_APIENTRYP)(GLuint , const GLchar *)>(context->getProcAddress("glGetFragDataLocation"));
-    BindFragDataLocation = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , const GLchar *)>(context->getProcAddress("glBindFragDataLocation"));
-    GetUniformuiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLuint *)>(context->getProcAddress("glGetUniformuiv"));
-    VertexAttribI4usv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLushort *)>(context->getProcAddress("glVertexAttribI4usv"));
-    VertexAttribI4ubv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLubyte *)>(context->getProcAddress("glVertexAttribI4ubv"));
-    VertexAttribI4sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLshort *)>(context->getProcAddress("glVertexAttribI4sv"));
-    VertexAttribI4bv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLbyte *)>(context->getProcAddress("glVertexAttribI4bv"));
-    VertexAttribI4uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLuint *)>(context->getProcAddress("glVertexAttribI4uiv"));
-    VertexAttribI3uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLuint *)>(context->getProcAddress("glVertexAttribI3uiv"));
-    VertexAttribI2uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLuint *)>(context->getProcAddress("glVertexAttribI2uiv"));
-    VertexAttribI1uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLuint *)>(context->getProcAddress("glVertexAttribI1uiv"));
-    VertexAttribI4iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLint *)>(context->getProcAddress("glVertexAttribI4iv"));
-    VertexAttribI3iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLint *)>(context->getProcAddress("glVertexAttribI3iv"));
-    VertexAttribI2iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLint *)>(context->getProcAddress("glVertexAttribI2iv"));
-    VertexAttribI1iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLint *)>(context->getProcAddress("glVertexAttribI1iv"));
-    VertexAttribI4ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLuint , GLuint , GLuint )>(context->getProcAddress("glVertexAttribI4ui"));
-    VertexAttribI3ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLuint , GLuint )>(context->getProcAddress("glVertexAttribI3ui"));
-    VertexAttribI2ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLuint )>(context->getProcAddress("glVertexAttribI2ui"));
-    VertexAttribI1ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint )>(context->getProcAddress("glVertexAttribI1ui"));
-    VertexAttribI4i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint , GLint , GLint )>(context->getProcAddress("glVertexAttribI4i"));
-    VertexAttribI3i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint , GLint )>(context->getProcAddress("glVertexAttribI3i"));
-    VertexAttribI2i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint )>(context->getProcAddress("glVertexAttribI2i"));
-    VertexAttribI1i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint )>(context->getProcAddress("glVertexAttribI1i"));
-    GetVertexAttribIuiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLuint *)>(context->getProcAddress("glGetVertexAttribIuiv"));
-    GetVertexAttribIiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint *)>(context->getProcAddress("glGetVertexAttribIiv"));
-    VertexAttribIPointer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLenum , GLsizei , const GLvoid *)>(context->getProcAddress("glVertexAttribIPointer"));
-    EndConditionalRender = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(context->getProcAddress("glEndConditionalRender"));
-    BeginConditionalRender = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum )>(context->getProcAddress("glBeginConditionalRender"));
-    ClampColor = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum )>(context->getProcAddress("glClampColor"));
-    GetTransformFeedbackVarying = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLsizei , GLsizei *, GLsizei *, GLenum *, GLchar *)>(context->getProcAddress("glGetTransformFeedbackVarying"));
-    TransformFeedbackVaryings = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , const GLchar* const *, GLenum )>(context->getProcAddress("glTransformFeedbackVaryings"));
-    BindBufferBase = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint , GLuint )>(context->getProcAddress("glBindBufferBase"));
-    BindBufferRange = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint , GLuint , GLintptr , GLsizeiptr )>(context->getProcAddress("glBindBufferRange"));
-    EndTransformFeedback = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(context->getProcAddress("glEndTransformFeedback"));
-    BeginTransformFeedback = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glBeginTransformFeedback"));
-    IsEnabledi = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glIsEnabledi"));
-    Disablei = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glDisablei"));
-    Enablei = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glEnablei"));
-    GetIntegeri_v = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint , GLint *)>(context->getProcAddress("glGetIntegeri_v"));
-    GetBooleani_v = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint , GLboolean *)>(context->getProcAddress("glGetBooleani_v"));
-    ColorMaski = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLboolean , GLboolean , GLboolean , GLboolean )>(context->getProcAddress("glColorMaski"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_3_0_CoreBackend, QT_OPENGL_3_0_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_3_0_CoreBackend::versionStatus()
 {
     return QOpenGLVersionStatus(3, 0, QOpenGLVersionStatus::CoreStatus);
@@ -733,22 +410,11 @@ QOpenGLVersionStatus QOpenGLFunctions_3_0_CoreBackend::versionStatus()
 QOpenGLFunctions_3_1_CoreBackend::QOpenGLFunctions_3_1_CoreBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 3.1 core functions
-    CopyBufferSubData = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLintptr , GLintptr , GLsizeiptr )>(context->getProcAddress("glCopyBufferSubData"));
-    UniformBlockBinding = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLuint )>(context->getProcAddress("glUniformBlockBinding"));
-    GetActiveUniformBlockName = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLsizei , GLsizei *, GLchar *)>(context->getProcAddress("glGetActiveUniformBlockName"));
-    GetActiveUniformBlockiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLenum , GLint *)>(context->getProcAddress("glGetActiveUniformBlockiv"));
-    GetUniformBlockIndex = reinterpret_cast<GLuint (QOPENGLF_APIENTRYP)(GLuint , const GLchar *)>(context->getProcAddress("glGetUniformBlockIndex"));
-    GetActiveUniformName = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLsizei , GLsizei *, GLchar *)>(context->getProcAddress("glGetActiveUniformName"));
-    GetActiveUniformsiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , const GLuint *, GLenum , GLint *)>(context->getProcAddress("glGetActiveUniformsiv"));
-    GetUniformIndices = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , const GLchar* const *, GLuint *)>(context->getProcAddress("glGetUniformIndices"));
-    PrimitiveRestartIndex = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glPrimitiveRestartIndex"));
-    TexBuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLuint )>(context->getProcAddress("glTexBuffer"));
-    DrawElementsInstanced = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLenum , const GLvoid *, GLsizei )>(context->getProcAddress("glDrawElementsInstanced"));
-    DrawArraysInstanced = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLsizei , GLsizei )>(context->getProcAddress("glDrawArraysInstanced"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_3_1_CoreBackend, QT_OPENGL_3_1_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_3_1_CoreBackend::versionStatus()
 {
     return QOpenGLVersionStatus(3, 1, QOpenGLVersionStatus::CoreStatus);
@@ -757,29 +423,11 @@ QOpenGLVersionStatus QOpenGLFunctions_3_1_CoreBackend::versionStatus()
 QOpenGLFunctions_3_2_CoreBackend::QOpenGLFunctions_3_2_CoreBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 3.2 core functions
-    SampleMaski = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLbitfield )>(context->getProcAddress("glSampleMaski"));
-    GetMultisamplefv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint , GLfloat *)>(context->getProcAddress("glGetMultisamplefv"));
-    TexImage3DMultisample = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLenum , GLsizei , GLsizei , GLsizei , GLboolean )>(context->getProcAddress("glTexImage3DMultisample"));
-    TexImage2DMultisample = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLenum , GLsizei , GLsizei , GLboolean )>(context->getProcAddress("glTexImage2DMultisample"));
-    GetSynciv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsync , GLenum , GLsizei , GLsizei *, GLint *)>(context->getProcAddress("glGetSynciv"));
-    GetInteger64v = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint64 *)>(context->getProcAddress("glGetInteger64v"));
-    WaitSync = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsync , GLbitfield , GLuint64 )>(context->getProcAddress("glWaitSync"));
-    ClientWaitSync = reinterpret_cast<GLenum (QOPENGLF_APIENTRYP)(GLsync , GLbitfield , GLuint64 )>(context->getProcAddress("glClientWaitSync"));
-    DeleteSync = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsync )>(context->getProcAddress("glDeleteSync"));
-    IsSync = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLsync )>(context->getProcAddress("glIsSync"));
-    FenceSync = reinterpret_cast<GLsync (QOPENGLF_APIENTRYP)(GLenum , GLbitfield )>(context->getProcAddress("glFenceSync"));
-    ProvokingVertex = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glProvokingVertex"));
-    MultiDrawElementsBaseVertex = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLsizei *, GLenum , const GLvoid* const *, GLsizei , const GLint *)>(context->getProcAddress("glMultiDrawElementsBaseVertex"));
-    DrawElementsInstancedBaseVertex = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLenum , const GLvoid *, GLsizei , GLint )>(context->getProcAddress("glDrawElementsInstancedBaseVertex"));
-    DrawRangeElementsBaseVertex = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint , GLuint , GLsizei , GLenum , const GLvoid *, GLint )>(context->getProcAddress("glDrawRangeElementsBaseVertex"));
-    DrawElementsBaseVertex = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLenum , const GLvoid *, GLint )>(context->getProcAddress("glDrawElementsBaseVertex"));
-    FramebufferTexture = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLuint , GLint )>(context->getProcAddress("glFramebufferTexture"));
-    GetBufferParameteri64v = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint64 *)>(context->getProcAddress("glGetBufferParameteri64v"));
-    GetInteger64i_v = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint , GLint64 *)>(context->getProcAddress("glGetInteger64i_v"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_3_2_CoreBackend, QT_OPENGL_3_2_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_3_2_CoreBackend::versionStatus()
 {
     return QOpenGLVersionStatus(3, 2, QOpenGLVersionStatus::CoreStatus);
@@ -788,68 +436,11 @@ QOpenGLVersionStatus QOpenGLFunctions_3_2_CoreBackend::versionStatus()
 QOpenGLFunctions_3_3_CoreBackend::QOpenGLFunctions_3_3_CoreBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 3.3 core functions
-    VertexAttribP4uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLboolean , const GLuint *)>(context->getProcAddress("glVertexAttribP4uiv"));
-    VertexAttribP4ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLboolean , GLuint )>(context->getProcAddress("glVertexAttribP4ui"));
-    VertexAttribP3uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLboolean , const GLuint *)>(context->getProcAddress("glVertexAttribP3uiv"));
-    VertexAttribP3ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLboolean , GLuint )>(context->getProcAddress("glVertexAttribP3ui"));
-    VertexAttribP2uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLboolean , const GLuint *)>(context->getProcAddress("glVertexAttribP2uiv"));
-    VertexAttribP2ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLboolean , GLuint )>(context->getProcAddress("glVertexAttribP2ui"));
-    VertexAttribP1uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLboolean , const GLuint *)>(context->getProcAddress("glVertexAttribP1uiv"));
-    VertexAttribP1ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLboolean , GLuint )>(context->getProcAddress("glVertexAttribP1ui"));
-    SecondaryColorP3uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glSecondaryColorP3uiv"));
-    SecondaryColorP3ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glSecondaryColorP3ui"));
-    ColorP4uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glColorP4uiv"));
-    ColorP4ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glColorP4ui"));
-    ColorP3uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glColorP3uiv"));
-    ColorP3ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glColorP3ui"));
-    NormalP3uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glNormalP3uiv"));
-    NormalP3ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glNormalP3ui"));
-    MultiTexCoordP4uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLuint *)>(context->getProcAddress("glMultiTexCoordP4uiv"));
-    MultiTexCoordP4ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLuint )>(context->getProcAddress("glMultiTexCoordP4ui"));
-    MultiTexCoordP3uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLuint *)>(context->getProcAddress("glMultiTexCoordP3uiv"));
-    MultiTexCoordP3ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLuint )>(context->getProcAddress("glMultiTexCoordP3ui"));
-    MultiTexCoordP2uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLuint *)>(context->getProcAddress("glMultiTexCoordP2uiv"));
-    MultiTexCoordP2ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLuint )>(context->getProcAddress("glMultiTexCoordP2ui"));
-    MultiTexCoordP1uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLuint *)>(context->getProcAddress("glMultiTexCoordP1uiv"));
-    MultiTexCoordP1ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLuint )>(context->getProcAddress("glMultiTexCoordP1ui"));
-    TexCoordP4uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glTexCoordP4uiv"));
-    TexCoordP4ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glTexCoordP4ui"));
-    TexCoordP3uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glTexCoordP3uiv"));
-    TexCoordP3ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glTexCoordP3ui"));
-    TexCoordP2uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glTexCoordP2uiv"));
-    TexCoordP2ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glTexCoordP2ui"));
-    TexCoordP1uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glTexCoordP1uiv"));
-    TexCoordP1ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glTexCoordP1ui"));
-    VertexP4uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glVertexP4uiv"));
-    VertexP4ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glVertexP4ui"));
-    VertexP3uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glVertexP3uiv"));
-    VertexP3ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glVertexP3ui"));
-    VertexP2uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glVertexP2uiv"));
-    VertexP2ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glVertexP2ui"));
-    GetQueryObjectui64v = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLuint64 *)>(context->getProcAddress("glGetQueryObjectui64v"));
-    GetQueryObjecti64v = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint64 *)>(context->getProcAddress("glGetQueryObjecti64v"));
-    QueryCounter = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum )>(context->getProcAddress("glQueryCounter"));
-    GetSamplerParameterIuiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLuint *)>(context->getProcAddress("glGetSamplerParameterIuiv"));
-    GetSamplerParameterfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLfloat *)>(context->getProcAddress("glGetSamplerParameterfv"));
-    GetSamplerParameterIiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint *)>(context->getProcAddress("glGetSamplerParameterIiv"));
-    GetSamplerParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint *)>(context->getProcAddress("glGetSamplerParameteriv"));
-    SamplerParameterIuiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , const GLuint *)>(context->getProcAddress("glSamplerParameterIuiv"));
-    SamplerParameterIiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , const GLint *)>(context->getProcAddress("glSamplerParameterIiv"));
-    SamplerParameterfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , const GLfloat *)>(context->getProcAddress("glSamplerParameterfv"));
-    SamplerParameterf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLfloat )>(context->getProcAddress("glSamplerParameterf"));
-    SamplerParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , const GLint *)>(context->getProcAddress("glSamplerParameteriv"));
-    SamplerParameteri = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint )>(context->getProcAddress("glSamplerParameteri"));
-    BindSampler = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint )>(context->getProcAddress("glBindSampler"));
-    IsSampler = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glIsSampler"));
-    DeleteSamplers = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , const GLuint *)>(context->getProcAddress("glDeleteSamplers"));
-    GenSamplers = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLuint *)>(context->getProcAddress("glGenSamplers"));
-    GetFragDataIndex = reinterpret_cast<GLint (QOPENGLF_APIENTRYP)(GLuint , const GLchar *)>(context->getProcAddress("glGetFragDataIndex"));
-    BindFragDataLocationIndexed = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLuint , const GLchar *)>(context->getProcAddress("glBindFragDataLocationIndexed"));
-    VertexAttribDivisor = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint )>(context->getProcAddress("glVertexAttribDivisor"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_3_3_CoreBackend, QT_OPENGL_3_3_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_3_3_CoreBackend::versionStatus()
 {
     return QOpenGLVersionStatus(3, 3, QOpenGLVersionStatus::CoreStatus);
@@ -858,56 +449,11 @@ QOpenGLVersionStatus QOpenGLFunctions_3_3_CoreBackend::versionStatus()
 QOpenGLFunctions_4_0_CoreBackend::QOpenGLFunctions_4_0_CoreBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 4.0 core functions
-    GetQueryIndexediv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint , GLenum , GLint *)>(context->getProcAddress("glGetQueryIndexediv"));
-    EndQueryIndexed = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glEndQueryIndexed"));
-    BeginQueryIndexed = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint , GLuint )>(context->getProcAddress("glBeginQueryIndexed"));
-    DrawTransformFeedbackStream = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint , GLuint )>(context->getProcAddress("glDrawTransformFeedbackStream"));
-    DrawTransformFeedback = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glDrawTransformFeedback"));
-    ResumeTransformFeedback = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(context->getProcAddress("glResumeTransformFeedback"));
-    PauseTransformFeedback = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(context->getProcAddress("glPauseTransformFeedback"));
-    IsTransformFeedback = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glIsTransformFeedback"));
-    GenTransformFeedbacks = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLuint *)>(context->getProcAddress("glGenTransformFeedbacks"));
-    DeleteTransformFeedbacks = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , const GLuint *)>(context->getProcAddress("glDeleteTransformFeedbacks"));
-    BindTransformFeedback = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glBindTransformFeedback"));
-    PatchParameterfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLfloat *)>(context->getProcAddress("glPatchParameterfv"));
-    PatchParameteri = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint )>(context->getProcAddress("glPatchParameteri"));
-    GetProgramStageiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLenum , GLint *)>(context->getProcAddress("glGetProgramStageiv"));
-    GetUniformSubroutineuiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLuint *)>(context->getProcAddress("glGetUniformSubroutineuiv"));
-    UniformSubroutinesuiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , const GLuint *)>(context->getProcAddress("glUniformSubroutinesuiv"));
-    GetActiveSubroutineName = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLuint , GLsizei , GLsizei *, GLchar *)>(context->getProcAddress("glGetActiveSubroutineName"));
-    GetActiveSubroutineUniformName = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLuint , GLsizei , GLsizei *, GLchar *)>(context->getProcAddress("glGetActiveSubroutineUniformName"));
-    GetActiveSubroutineUniformiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLuint , GLenum , GLint *)>(context->getProcAddress("glGetActiveSubroutineUniformiv"));
-    GetSubroutineIndex = reinterpret_cast<GLuint (QOPENGLF_APIENTRYP)(GLuint , GLenum , const GLchar *)>(context->getProcAddress("glGetSubroutineIndex"));
-    GetSubroutineUniformLocation = reinterpret_cast<GLint (QOPENGLF_APIENTRYP)(GLuint , GLenum , const GLchar *)>(context->getProcAddress("glGetSubroutineUniformLocation"));
-    GetUniformdv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLdouble *)>(context->getProcAddress("glGetUniformdv"));
-    UniformMatrix4x3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , GLboolean , const GLdouble *)>(context->getProcAddress("glUniformMatrix4x3dv"));
-    UniformMatrix4x2dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , GLboolean , const GLdouble *)>(context->getProcAddress("glUniformMatrix4x2dv"));
-    UniformMatrix3x4dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , GLboolean , const GLdouble *)>(context->getProcAddress("glUniformMatrix3x4dv"));
-    UniformMatrix3x2dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , GLboolean , const GLdouble *)>(context->getProcAddress("glUniformMatrix3x2dv"));
-    UniformMatrix2x4dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , GLboolean , const GLdouble *)>(context->getProcAddress("glUniformMatrix2x4dv"));
-    UniformMatrix2x3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , GLboolean , const GLdouble *)>(context->getProcAddress("glUniformMatrix2x3dv"));
-    UniformMatrix4dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , GLboolean , const GLdouble *)>(context->getProcAddress("glUniformMatrix4dv"));
-    UniformMatrix3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , GLboolean , const GLdouble *)>(context->getProcAddress("glUniformMatrix3dv"));
-    UniformMatrix2dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , GLboolean , const GLdouble *)>(context->getProcAddress("glUniformMatrix2dv"));
-    Uniform4dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , const GLdouble *)>(context->getProcAddress("glUniform4dv"));
-    Uniform3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , const GLdouble *)>(context->getProcAddress("glUniform3dv"));
-    Uniform2dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , const GLdouble *)>(context->getProcAddress("glUniform2dv"));
-    Uniform1dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLsizei , const GLdouble *)>(context->getProcAddress("glUniform1dv"));
-    Uniform4d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLdouble , GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glUniform4d"));
-    Uniform3d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glUniform3d"));
-    Uniform2d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLdouble , GLdouble )>(context->getProcAddress("glUniform2d"));
-    Uniform1d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLdouble )>(context->getProcAddress("glUniform1d"));
-    DrawElementsIndirect = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLvoid *)>(context->getProcAddress("glDrawElementsIndirect"));
-    DrawArraysIndirect = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLvoid *)>(context->getProcAddress("glDrawArraysIndirect"));
-    BlendFuncSeparatei = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLenum , GLenum , GLenum )>(context->getProcAddress("glBlendFuncSeparatei"));
-    BlendFunci = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLenum )>(context->getProcAddress("glBlendFunci"));
-    BlendEquationSeparatei = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLenum )>(context->getProcAddress("glBlendEquationSeparatei"));
-    BlendEquationi = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum )>(context->getProcAddress("glBlendEquationi"));
-    MinSampleShading = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat )>(context->getProcAddress("glMinSampleShading"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_4_0_CoreBackend, QT_OPENGL_4_0_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_4_0_CoreBackend::versionStatus()
 {
     return QOpenGLVersionStatus(4, 0, QOpenGLVersionStatus::CoreStatus);
@@ -916,98 +462,11 @@ QOpenGLVersionStatus QOpenGLFunctions_4_0_CoreBackend::versionStatus()
 QOpenGLFunctions_4_1_CoreBackend::QOpenGLFunctions_4_1_CoreBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 4.1 core functions
-    GetDoublei_v = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint , GLdouble *)>(context->getProcAddress("glGetDoublei_v"));
-    GetFloati_v = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint , GLfloat *)>(context->getProcAddress("glGetFloati_v"));
-    DepthRangeIndexed = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLdouble , GLdouble )>(context->getProcAddress("glDepthRangeIndexed"));
-    DepthRangeArrayv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , const GLdouble *)>(context->getProcAddress("glDepthRangeArrayv"));
-    ScissorIndexedv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLint *)>(context->getProcAddress("glScissorIndexedv"));
-    ScissorIndexed = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint , GLsizei , GLsizei )>(context->getProcAddress("glScissorIndexed"));
-    ScissorArrayv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , const GLint *)>(context->getProcAddress("glScissorArrayv"));
-    ViewportIndexedfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLfloat *)>(context->getProcAddress("glViewportIndexedfv"));
-    ViewportIndexedf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLfloat , GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glViewportIndexedf"));
-    ViewportArrayv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , const GLfloat *)>(context->getProcAddress("glViewportArrayv"));
-    GetVertexAttribLdv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLdouble *)>(context->getProcAddress("glGetVertexAttribLdv"));
-    VertexAttribLPointer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLenum , GLsizei , const GLvoid *)>(context->getProcAddress("glVertexAttribLPointer"));
-    VertexAttribL4dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLdouble *)>(context->getProcAddress("glVertexAttribL4dv"));
-    VertexAttribL3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLdouble *)>(context->getProcAddress("glVertexAttribL3dv"));
-    VertexAttribL2dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLdouble *)>(context->getProcAddress("glVertexAttribL2dv"));
-    VertexAttribL1dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLdouble *)>(context->getProcAddress("glVertexAttribL1dv"));
-    VertexAttribL4d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLdouble , GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glVertexAttribL4d"));
-    VertexAttribL3d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glVertexAttribL3d"));
-    VertexAttribL2d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLdouble , GLdouble )>(context->getProcAddress("glVertexAttribL2d"));
-    VertexAttribL1d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLdouble )>(context->getProcAddress("glVertexAttribL1d"));
-    GetProgramPipelineInfoLog = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , GLsizei *, GLchar *)>(context->getProcAddress("glGetProgramPipelineInfoLog"));
-    ValidateProgramPipeline = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glValidateProgramPipeline"));
-    ProgramUniformMatrix4x3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLboolean , const GLdouble *)>(context->getProcAddress("glProgramUniformMatrix4x3dv"));
-    ProgramUniformMatrix3x4dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLboolean , const GLdouble *)>(context->getProcAddress("glProgramUniformMatrix3x4dv"));
-    ProgramUniformMatrix4x2dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLboolean , const GLdouble *)>(context->getProcAddress("glProgramUniformMatrix4x2dv"));
-    ProgramUniformMatrix2x4dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLboolean , const GLdouble *)>(context->getProcAddress("glProgramUniformMatrix2x4dv"));
-    ProgramUniformMatrix3x2dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLboolean , const GLdouble *)>(context->getProcAddress("glProgramUniformMatrix3x2dv"));
-    ProgramUniformMatrix2x3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLboolean , const GLdouble *)>(context->getProcAddress("glProgramUniformMatrix2x3dv"));
-    ProgramUniformMatrix4x3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLboolean , const GLfloat *)>(context->getProcAddress("glProgramUniformMatrix4x3fv"));
-    ProgramUniformMatrix3x4fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLboolean , const GLfloat *)>(context->getProcAddress("glProgramUniformMatrix3x4fv"));
-    ProgramUniformMatrix4x2fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLboolean , const GLfloat *)>(context->getProcAddress("glProgramUniformMatrix4x2fv"));
-    ProgramUniformMatrix2x4fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLboolean , const GLfloat *)>(context->getProcAddress("glProgramUniformMatrix2x4fv"));
-    ProgramUniformMatrix3x2fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLboolean , const GLfloat *)>(context->getProcAddress("glProgramUniformMatrix3x2fv"));
-    ProgramUniformMatrix2x3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLboolean , const GLfloat *)>(context->getProcAddress("glProgramUniformMatrix2x3fv"));
-    ProgramUniformMatrix4dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLboolean , const GLdouble *)>(context->getProcAddress("glProgramUniformMatrix4dv"));
-    ProgramUniformMatrix3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLboolean , const GLdouble *)>(context->getProcAddress("glProgramUniformMatrix3dv"));
-    ProgramUniformMatrix2dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLboolean , const GLdouble *)>(context->getProcAddress("glProgramUniformMatrix2dv"));
-    ProgramUniformMatrix4fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLboolean , const GLfloat *)>(context->getProcAddress("glProgramUniformMatrix4fv"));
-    ProgramUniformMatrix3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLboolean , const GLfloat *)>(context->getProcAddress("glProgramUniformMatrix3fv"));
-    ProgramUniformMatrix2fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLboolean , const GLfloat *)>(context->getProcAddress("glProgramUniformMatrix2fv"));
-    ProgramUniform4uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , const GLuint *)>(context->getProcAddress("glProgramUniform4uiv"));
-    ProgramUniform4ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLuint , GLuint , GLuint , GLuint )>(context->getProcAddress("glProgramUniform4ui"));
-    ProgramUniform4dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , const GLdouble *)>(context->getProcAddress("glProgramUniform4dv"));
-    ProgramUniform4d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLdouble , GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glProgramUniform4d"));
-    ProgramUniform4fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , const GLfloat *)>(context->getProcAddress("glProgramUniform4fv"));
-    ProgramUniform4f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLfloat , GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glProgramUniform4f"));
-    ProgramUniform4iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , const GLint *)>(context->getProcAddress("glProgramUniform4iv"));
-    ProgramUniform4i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint , GLint , GLint , GLint )>(context->getProcAddress("glProgramUniform4i"));
-    ProgramUniform3uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , const GLuint *)>(context->getProcAddress("glProgramUniform3uiv"));
-    ProgramUniform3ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLuint , GLuint , GLuint )>(context->getProcAddress("glProgramUniform3ui"));
-    ProgramUniform3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , const GLdouble *)>(context->getProcAddress("glProgramUniform3dv"));
-    ProgramUniform3d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glProgramUniform3d"));
-    ProgramUniform3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , const GLfloat *)>(context->getProcAddress("glProgramUniform3fv"));
-    ProgramUniform3f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glProgramUniform3f"));
-    ProgramUniform3iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , const GLint *)>(context->getProcAddress("glProgramUniform3iv"));
-    ProgramUniform3i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint , GLint , GLint )>(context->getProcAddress("glProgramUniform3i"));
-    ProgramUniform2uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , const GLuint *)>(context->getProcAddress("glProgramUniform2uiv"));
-    ProgramUniform2ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLuint , GLuint )>(context->getProcAddress("glProgramUniform2ui"));
-    ProgramUniform2dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , const GLdouble *)>(context->getProcAddress("glProgramUniform2dv"));
-    ProgramUniform2d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLdouble , GLdouble )>(context->getProcAddress("glProgramUniform2d"));
-    ProgramUniform2fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , const GLfloat *)>(context->getProcAddress("glProgramUniform2fv"));
-    ProgramUniform2f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLfloat , GLfloat )>(context->getProcAddress("glProgramUniform2f"));
-    ProgramUniform2iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , const GLint *)>(context->getProcAddress("glProgramUniform2iv"));
-    ProgramUniform2i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint , GLint )>(context->getProcAddress("glProgramUniform2i"));
-    ProgramUniform1uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , const GLuint *)>(context->getProcAddress("glProgramUniform1uiv"));
-    ProgramUniform1ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLuint )>(context->getProcAddress("glProgramUniform1ui"));
-    ProgramUniform1dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , const GLdouble *)>(context->getProcAddress("glProgramUniform1dv"));
-    ProgramUniform1d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLdouble )>(context->getProcAddress("glProgramUniform1d"));
-    ProgramUniform1fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , const GLfloat *)>(context->getProcAddress("glProgramUniform1fv"));
-    ProgramUniform1f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLfloat )>(context->getProcAddress("glProgramUniform1f"));
-    ProgramUniform1iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , const GLint *)>(context->getProcAddress("glProgramUniform1iv"));
-    ProgramUniform1i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint )>(context->getProcAddress("glProgramUniform1i"));
-    GetProgramPipelineiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint *)>(context->getProcAddress("glGetProgramPipelineiv"));
-    IsProgramPipeline = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glIsProgramPipeline"));
-    GenProgramPipelines = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLuint *)>(context->getProcAddress("glGenProgramPipelines"));
-    DeleteProgramPipelines = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , const GLuint *)>(context->getProcAddress("glDeleteProgramPipelines"));
-    BindProgramPipeline = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glBindProgramPipeline"));
-    CreateShaderProgramv = reinterpret_cast<GLuint (QOPENGLF_APIENTRYP)(GLenum , GLsizei , const GLchar* const *)>(context->getProcAddress("glCreateShaderProgramv"));
-    ActiveShaderProgram = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint )>(context->getProcAddress("glActiveShaderProgram"));
-    UseProgramStages = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLbitfield , GLuint )>(context->getProcAddress("glUseProgramStages"));
-    ProgramParameteri = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint )>(context->getProcAddress("glProgramParameteri"));
-    ProgramBinary = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , const GLvoid *, GLsizei )>(context->getProcAddress("glProgramBinary"));
-    GetProgramBinary = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , GLsizei *, GLenum *, GLvoid *)>(context->getProcAddress("glGetProgramBinary"));
-    ClearDepthf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat )>(context->getProcAddress("glClearDepthf"));
-    DepthRangef = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat )>(context->getProcAddress("glDepthRangef"));
-    GetShaderPrecisionFormat = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *, GLint *)>(context->getProcAddress("glGetShaderPrecisionFormat"));
-    ShaderBinary = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , const GLuint *, GLenum , const GLvoid *, GLsizei )>(context->getProcAddress("glShaderBinary"));
-    ReleaseShaderCompiler = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(context->getProcAddress("glReleaseShaderCompiler"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_4_1_CoreBackend, QT_OPENGL_4_1_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_4_1_CoreBackend::versionStatus()
 {
     return QOpenGLVersionStatus(4, 1, QOpenGLVersionStatus::CoreStatus);
@@ -1016,22 +475,11 @@ QOpenGLVersionStatus QOpenGLFunctions_4_1_CoreBackend::versionStatus()
 QOpenGLFunctions_4_2_CoreBackend::QOpenGLFunctions_4_2_CoreBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 4.2 core functions
-    TexStorage3D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLenum , GLsizei , GLsizei , GLsizei )>(context->getProcAddress("glTexStorage3D"));
-    TexStorage2D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLenum , GLsizei , GLsizei )>(context->getProcAddress("glTexStorage2D"));
-    TexStorage1D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLenum , GLsizei )>(context->getProcAddress("glTexStorage1D"));
-    MemoryBarrier = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLbitfield )>(context->getProcAddress("glMemoryBarrier"));
-    BindImageTexture = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLint , GLboolean , GLint , GLenum , GLenum )>(context->getProcAddress("glBindImageTexture"));
-    GetActiveAtomicCounterBufferiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLenum , GLint *)>(context->getProcAddress("glGetActiveAtomicCounterBufferiv"));
-    GetInternalformativ = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLenum , GLsizei , GLint *)>(context->getProcAddress("glGetInternalformativ"));
-    DrawTransformFeedbackStreamInstanced = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint , GLuint , GLsizei )>(context->getProcAddress("glDrawTransformFeedbackStreamInstanced"));
-    DrawTransformFeedbackInstanced = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint , GLsizei )>(context->getProcAddress("glDrawTransformFeedbackInstanced"));
-    DrawElementsInstancedBaseVertexBaseInstance = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLenum , const void *, GLsizei , GLint , GLuint )>(context->getProcAddress("glDrawElementsInstancedBaseVertexBaseInstance"));
-    DrawElementsInstancedBaseInstance = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLenum , const void *, GLsizei , GLuint )>(context->getProcAddress("glDrawElementsInstancedBaseInstance"));
-    DrawArraysInstancedBaseInstance = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLsizei , GLsizei , GLuint )>(context->getProcAddress("glDrawArraysInstancedBaseInstance"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_4_2_CoreBackend, QT_OPENGL_4_2_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_4_2_CoreBackend::versionStatus()
 {
     return QOpenGLVersionStatus(4, 2, QOpenGLVersionStatus::CoreStatus);
@@ -1040,53 +488,11 @@ QOpenGLVersionStatus QOpenGLFunctions_4_2_CoreBackend::versionStatus()
 QOpenGLFunctions_4_3_CoreBackend::QOpenGLFunctions_4_3_CoreBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 4.3 core functions
-    GetObjectPtrLabel = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const void *, GLsizei , GLsizei *, GLchar *)>(context->getProcAddress("glGetObjectPtrLabel"));
-    ObjectPtrLabel = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const void *, GLsizei , const GLchar *)>(context->getProcAddress("glObjectPtrLabel"));
-    GetObjectLabel = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint , GLsizei , GLsizei *, GLchar *)>(context->getProcAddress("glGetObjectLabel"));
-    ObjectLabel = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint , GLsizei , const GLchar *)>(context->getProcAddress("glObjectLabel"));
-    PopDebugGroup = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(context->getProcAddress("glPopDebugGroup"));
-    PushDebugGroup = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint , GLsizei , const GLchar *)>(context->getProcAddress("glPushDebugGroup"));
-    GetDebugMessageLog = reinterpret_cast<GLuint (QOPENGLF_APIENTRYP)(GLuint , GLsizei , GLenum *, GLenum *, GLuint *, GLenum *, GLsizei *, GLchar *)>(context->getProcAddress("glGetDebugMessageLog"));
-    DebugMessageCallback = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLDEBUGPROC , const void *)>(context->getProcAddress("glDebugMessageCallback"));
-    DebugMessageInsert = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLuint , GLenum , GLsizei , const GLchar *)>(context->getProcAddress("glDebugMessageInsert"));
-    DebugMessageControl = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLenum , GLsizei , const GLuint *, GLboolean )>(context->getProcAddress("glDebugMessageControl"));
-    TexStorage3DMultisample = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLenum , GLsizei , GLsizei , GLsizei , GLboolean )>(context->getProcAddress("glTexStorage3DMultisample"));
-    TexStorage2DMultisample = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLenum , GLsizei , GLsizei , GLboolean )>(context->getProcAddress("glTexStorage2DMultisample"));
-    TexBufferRange = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLuint , GLintptr , GLsizeiptr )>(context->getProcAddress("glTexBufferRange"));
-    ShaderStorageBlockBinding = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLuint )>(context->getProcAddress("glShaderStorageBlockBinding"));
-    GetProgramResourceLocationIndex = reinterpret_cast<GLint (QOPENGLF_APIENTRYP)(GLuint , GLenum , const GLchar *)>(context->getProcAddress("glGetProgramResourceLocationIndex"));
-    GetProgramResourceLocation = reinterpret_cast<GLint (QOPENGLF_APIENTRYP)(GLuint , GLenum , const GLchar *)>(context->getProcAddress("glGetProgramResourceLocation"));
-    GetProgramResourceiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLuint , GLsizei , const GLenum *, GLsizei , GLsizei *, GLint *)>(context->getProcAddress("glGetProgramResourceiv"));
-    GetProgramResourceName = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLuint , GLsizei , GLsizei *, GLchar *)>(context->getProcAddress("glGetProgramResourceName"));
-    GetProgramResourceIndex = reinterpret_cast<GLuint (QOPENGLF_APIENTRYP)(GLuint , GLenum , const GLchar *)>(context->getProcAddress("glGetProgramResourceIndex"));
-    GetProgramInterfaceiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLenum , GLint *)>(context->getProcAddress("glGetProgramInterfaceiv"));
-    MultiDrawElementsIndirect = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const void *, GLsizei , GLsizei )>(context->getProcAddress("glMultiDrawElementsIndirect"));
-    MultiDrawArraysIndirect = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const void *, GLsizei , GLsizei )>(context->getProcAddress("glMultiDrawArraysIndirect"));
-    InvalidateSubFramebuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , const GLenum *, GLint , GLint , GLsizei , GLsizei )>(context->getProcAddress("glInvalidateSubFramebuffer"));
-    InvalidateFramebuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , const GLenum *)>(context->getProcAddress("glInvalidateFramebuffer"));
-    InvalidateBufferData = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glInvalidateBufferData"));
-    InvalidateBufferSubData = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLintptr , GLsizeiptr )>(context->getProcAddress("glInvalidateBufferSubData"));
-    InvalidateTexImage = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint )>(context->getProcAddress("glInvalidateTexImage"));
-    InvalidateTexSubImage = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint , GLint , GLint , GLsizei , GLsizei , GLsizei )>(context->getProcAddress("glInvalidateTexSubImage"));
-    GetInternalformati64v = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLenum , GLsizei , GLint64 *)>(context->getProcAddress("glGetInternalformati64v"));
-    GetFramebufferParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *)>(context->getProcAddress("glGetFramebufferParameteriv"));
-    FramebufferParameteri = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint )>(context->getProcAddress("glFramebufferParameteri"));
-    VertexBindingDivisor = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint )>(context->getProcAddress("glVertexBindingDivisor"));
-    VertexAttribBinding = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint )>(context->getProcAddress("glVertexAttribBinding"));
-    VertexAttribLFormat = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLenum , GLuint )>(context->getProcAddress("glVertexAttribLFormat"));
-    VertexAttribIFormat = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLenum , GLuint )>(context->getProcAddress("glVertexAttribIFormat"));
-    VertexAttribFormat = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLenum , GLboolean , GLuint )>(context->getProcAddress("glVertexAttribFormat"));
-    BindVertexBuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLintptr , GLsizei )>(context->getProcAddress("glBindVertexBuffer"));
-    TextureView = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLuint , GLenum , GLuint , GLuint , GLuint , GLuint )>(context->getProcAddress("glTextureView"));
-    CopyImageSubData = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint , GLint , GLint , GLint , GLuint , GLenum , GLint , GLint , GLint , GLint , GLsizei , GLsizei , GLsizei )>(context->getProcAddress("glCopyImageSubData"));
-    DispatchComputeIndirect = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLintptr )>(context->getProcAddress("glDispatchComputeIndirect"));
-    DispatchCompute = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLuint )>(context->getProcAddress("glDispatchCompute"));
-    ClearBufferSubData = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLintptr , GLsizeiptr , GLenum , GLenum , const void *)>(context->getProcAddress("glClearBufferSubData"));
-    ClearBufferData = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLenum , GLenum , const void *)>(context->getProcAddress("glClearBufferData"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_4_3_CoreBackend, QT_OPENGL_4_3_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_4_3_CoreBackend::versionStatus()
 {
     return QOpenGLVersionStatus(4, 3, QOpenGLVersionStatus::CoreStatus);
@@ -1095,19 +501,11 @@ QOpenGLVersionStatus QOpenGLFunctions_4_3_CoreBackend::versionStatus()
 QOpenGLFunctions_4_4_CoreBackend::QOpenGLFunctions_4_4_CoreBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 4.4 core functions
-    BindVertexBuffers = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , const GLuint *, const GLintptr *, const GLsizei *)>(context->getProcAddress("glBindVertexBuffers"));
-    BindImageTextures = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , const GLuint *)>(context->getProcAddress("glBindImageTextures"));
-    BindSamplers = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , const GLuint *)>(context->getProcAddress("glBindSamplers"));
-    BindTextures = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , const GLuint *)>(context->getProcAddress("glBindTextures"));
-    BindBuffersRange = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint , GLsizei , const GLuint *, const GLintptr *, const GLsizeiptr *)>(context->getProcAddress("glBindBuffersRange"));
-    BindBuffersBase = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint , GLsizei , const GLuint *)>(context->getProcAddress("glBindBuffersBase"));
-    ClearTexSubImage = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint , GLint , GLint , GLsizei , GLsizei , GLsizei , GLenum , GLenum , const void *)>(context->getProcAddress("glClearTexSubImage"));
-    ClearTexImage = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLenum , GLenum , const void *)>(context->getProcAddress("glClearTexImage"));
-    BufferStorage = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizeiptr , const void *, GLbitfield )>(context->getProcAddress("glBufferStorage"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_4_4_CoreBackend, QT_OPENGL_4_4_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_4_4_CoreBackend::versionStatus()
 {
     return QOpenGLVersionStatus(4, 4, QOpenGLVersionStatus::CoreStatus);
@@ -1116,116 +514,11 @@ QOpenGLVersionStatus QOpenGLFunctions_4_4_CoreBackend::versionStatus()
 QOpenGLFunctions_4_5_CoreBackend::QOpenGLFunctions_4_5_CoreBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 4.5 core functions
-    TextureBarrier = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(context->getProcAddress("glTextureBarrier"));
-    ReadnPixels = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLsizei , GLsizei , GLenum , GLenum , GLsizei , void *)>(context->getProcAddress("glReadnPixels"));
-    GetnUniformuiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLuint *)>(context->getProcAddress("glGetnUniformuiv"));
-    GetnUniformiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLint *)>(context->getProcAddress("glGetnUniformiv"));
-    GetnUniformfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLfloat *)>(context->getProcAddress("glGetnUniformfv"));
-    GetnUniformdv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , GLdouble *)>(context->getProcAddress("glGetnUniformdv"));
-    GetnTexImage = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLenum , GLenum , GLsizei , void *)>(context->getProcAddress("glGetnTexImage"));
-    GetnCompressedTexImage = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLsizei , void *)>(context->getProcAddress("glGetnCompressedTexImage"));
-    GetGraphicsResetStatus = reinterpret_cast<GLenum (QOPENGLF_APIENTRYP)()>(context->getProcAddress("glGetGraphicsResetStatus"));
-    GetCompressedTextureSubImage = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint , GLint , GLint , GLsizei , GLsizei , GLsizei , GLsizei , void *)>(context->getProcAddress("glGetCompressedTextureSubImage"));
-    GetTextureSubImage = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint , GLint , GLint , GLsizei , GLsizei , GLsizei , GLenum , GLenum , GLsizei , void *)>(context->getProcAddress("glGetTextureSubImage"));
-    MemoryBarrierByRegion = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLbitfield )>(context->getProcAddress("glMemoryBarrierByRegion"));
-    CreateQueries = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLuint *)>(context->getProcAddress("glCreateQueries"));
-    CreateProgramPipelines = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLuint *)>(context->getProcAddress("glCreateProgramPipelines"));
-    CreateSamplers = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLuint *)>(context->getProcAddress("glCreateSamplers"));
-    GetVertexArrayIndexed64iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLenum , GLint64 *)>(context->getProcAddress("glGetVertexArrayIndexed64iv"));
-    GetVertexArrayIndexediv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLenum , GLint *)>(context->getProcAddress("glGetVertexArrayIndexediv"));
-    GetVertexArrayiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint *)>(context->getProcAddress("glGetVertexArrayiv"));
-    VertexArrayBindingDivisor = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLuint )>(context->getProcAddress("glVertexArrayBindingDivisor"));
-    VertexArrayAttribLFormat = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLint , GLenum , GLuint )>(context->getProcAddress("glVertexArrayAttribLFormat"));
-    VertexArrayAttribIFormat = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLint , GLenum , GLuint )>(context->getProcAddress("glVertexArrayAttribIFormat"));
-    VertexArrayAttribFormat = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLint , GLenum , GLboolean , GLuint )>(context->getProcAddress("glVertexArrayAttribFormat"));
-    VertexArrayAttribBinding = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLuint )>(context->getProcAddress("glVertexArrayAttribBinding"));
-    VertexArrayVertexBuffers = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLsizei , const GLuint *, const GLintptr *, const GLsizei *)>(context->getProcAddress("glVertexArrayVertexBuffers"));
-    VertexArrayVertexBuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLuint , GLintptr , GLsizei )>(context->getProcAddress("glVertexArrayVertexBuffer"));
-    VertexArrayElementBuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint )>(context->getProcAddress("glVertexArrayElementBuffer"));
-    EnableVertexArrayAttrib = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint )>(context->getProcAddress("glEnableVertexArrayAttrib"));
-    DisableVertexArrayAttrib = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint )>(context->getProcAddress("glDisableVertexArrayAttrib"));
-    CreateVertexArrays = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLuint *)>(context->getProcAddress("glCreateVertexArrays"));
-    GetTextureParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint *)>(context->getProcAddress("glGetTextureParameteriv"));
-    GetTextureParameterIuiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLuint *)>(context->getProcAddress("glGetTextureParameterIuiv"));
-    GetTextureParameterIiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint *)>(context->getProcAddress("glGetTextureParameterIiv"));
-    GetTextureParameterfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLfloat *)>(context->getProcAddress("glGetTextureParameterfv"));
-    GetTextureLevelParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLenum , GLint *)>(context->getProcAddress("glGetTextureLevelParameteriv"));
-    GetTextureLevelParameterfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLenum , GLfloat *)>(context->getProcAddress("glGetTextureLevelParameterfv"));
-    GetCompressedTextureImage = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLsizei , void *)>(context->getProcAddress("glGetCompressedTextureImage"));
-    GetTextureImage = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLenum , GLenum , GLsizei , void *)>(context->getProcAddress("glGetTextureImage"));
-    BindTextureUnit = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint )>(context->getProcAddress("glBindTextureUnit"));
-    GenerateTextureMipmap = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glGenerateTextureMipmap"));
-    TextureParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , const GLint *)>(context->getProcAddress("glTextureParameteriv"));
-    TextureParameterIuiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , const GLuint *)>(context->getProcAddress("glTextureParameterIuiv"));
-    TextureParameterIiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , const GLint *)>(context->getProcAddress("glTextureParameterIiv"));
-    TextureParameteri = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint )>(context->getProcAddress("glTextureParameteri"));
-    TextureParameterfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , const GLfloat *)>(context->getProcAddress("glTextureParameterfv"));
-    TextureParameterf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLfloat )>(context->getProcAddress("glTextureParameterf"));
-    CopyTextureSubImage3D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint , GLint , GLint , GLint , GLint , GLsizei , GLsizei )>(context->getProcAddress("glCopyTextureSubImage3D"));
-    CopyTextureSubImage2D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint , GLint , GLint , GLint , GLsizei , GLsizei )>(context->getProcAddress("glCopyTextureSubImage2D"));
-    CopyTextureSubImage1D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint , GLint , GLint , GLsizei )>(context->getProcAddress("glCopyTextureSubImage1D"));
-    CompressedTextureSubImage3D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint , GLint , GLint , GLsizei , GLsizei , GLsizei , GLenum , GLsizei , const void *)>(context->getProcAddress("glCompressedTextureSubImage3D"));
-    CompressedTextureSubImage2D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint , GLint , GLsizei , GLsizei , GLenum , GLsizei , const void *)>(context->getProcAddress("glCompressedTextureSubImage2D"));
-    CompressedTextureSubImage1D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint , GLsizei , GLenum , GLsizei , const void *)>(context->getProcAddress("glCompressedTextureSubImage1D"));
-    TextureSubImage3D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint , GLint , GLint , GLsizei , GLsizei , GLsizei , GLenum , GLenum , const void *)>(context->getProcAddress("glTextureSubImage3D"));
-    TextureSubImage2D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint , GLint , GLsizei , GLsizei , GLenum , GLenum , const void *)>(context->getProcAddress("glTextureSubImage2D"));
-    TextureSubImage1D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint , GLsizei , GLenum , GLenum , const void *)>(context->getProcAddress("glTextureSubImage1D"));
-    TextureStorage3DMultisample = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , GLenum , GLsizei , GLsizei , GLsizei , GLboolean )>(context->getProcAddress("glTextureStorage3DMultisample"));
-    TextureStorage2DMultisample = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , GLenum , GLsizei , GLsizei , GLboolean )>(context->getProcAddress("glTextureStorage2DMultisample"));
-    TextureStorage3D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , GLenum , GLsizei , GLsizei , GLsizei )>(context->getProcAddress("glTextureStorage3D"));
-    TextureStorage2D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , GLenum , GLsizei , GLsizei )>(context->getProcAddress("glTextureStorage2D"));
-    TextureStorage1D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , GLenum , GLsizei )>(context->getProcAddress("glTextureStorage1D"));
-    TextureBufferRange = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLuint , GLintptr , GLsizei )>(context->getProcAddress("glTextureBufferRange"));
-    TextureBuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLuint )>(context->getProcAddress("glTextureBuffer"));
-    CreateTextures = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLuint *)>(context->getProcAddress("glCreateTextures"));
-    GetNamedRenderbufferParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint *)>(context->getProcAddress("glGetNamedRenderbufferParameteriv"));
-    NamedRenderbufferStorageMultisample = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , GLenum , GLsizei , GLsizei )>(context->getProcAddress("glNamedRenderbufferStorageMultisample"));
-    NamedRenderbufferStorage = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLsizei , GLsizei )>(context->getProcAddress("glNamedRenderbufferStorage"));
-    CreateRenderbuffers = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLuint *)>(context->getProcAddress("glCreateRenderbuffers"));
-    GetNamedFramebufferAttachmentParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLenum , GLint *)>(context->getProcAddress("glGetNamedFramebufferAttachmentParameteriv"));
-    GetNamedFramebufferParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint *)>(context->getProcAddress("glGetNamedFramebufferParameteriv"));
-    CheckNamedFramebufferStatus = reinterpret_cast<GLenum (QOPENGLF_APIENTRYP)(GLuint , GLenum )>(context->getProcAddress("glCheckNamedFramebufferStatus"));
-    BlitNamedFramebuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLint , GLint , GLint , GLint , GLint , GLint , GLint , GLint , GLbitfield , GLenum )>(context->getProcAddress("glBlitNamedFramebuffer"));
-    ClearNamedFramebufferfi = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLfloat , GLint )>(context->getProcAddress("glClearNamedFramebufferfi"));
-    ClearNamedFramebufferfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint , const GLfloat *)>(context->getProcAddress("glClearNamedFramebufferfv"));
-    ClearNamedFramebufferuiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint , const GLuint *)>(context->getProcAddress("glClearNamedFramebufferuiv"));
-    ClearNamedFramebufferiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint , const GLint *)>(context->getProcAddress("glClearNamedFramebufferiv"));
-    InvalidateNamedFramebufferSubData = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , const GLenum *, GLint , GLint , GLsizei , GLsizei )>(context->getProcAddress("glInvalidateNamedFramebufferSubData"));
-    InvalidateNamedFramebufferData = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , const GLenum *)>(context->getProcAddress("glInvalidateNamedFramebufferData"));
-    NamedFramebufferReadBuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum )>(context->getProcAddress("glNamedFramebufferReadBuffer"));
-    NamedFramebufferDrawBuffers = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , const GLenum *)>(context->getProcAddress("glNamedFramebufferDrawBuffers"));
-    NamedFramebufferDrawBuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum )>(context->getProcAddress("glNamedFramebufferDrawBuffer"));
-    NamedFramebufferTextureLayer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLuint , GLint , GLint )>(context->getProcAddress("glNamedFramebufferTextureLayer"));
-    NamedFramebufferTexture = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLuint , GLint )>(context->getProcAddress("glNamedFramebufferTexture"));
-    NamedFramebufferParameteri = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint )>(context->getProcAddress("glNamedFramebufferParameteri"));
-    NamedFramebufferRenderbuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLenum , GLuint )>(context->getProcAddress("glNamedFramebufferRenderbuffer"));
-    CreateFramebuffers = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLuint *)>(context->getProcAddress("glCreateFramebuffers"));
-    GetNamedBufferSubData = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLintptr , GLsizei , void *)>(context->getProcAddress("glGetNamedBufferSubData"));
-    GetNamedBufferPointerv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , void * *)>(context->getProcAddress("glGetNamedBufferPointerv"));
-    GetNamedBufferParameteri64v = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint64 *)>(context->getProcAddress("glGetNamedBufferParameteri64v"));
-    GetNamedBufferParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint *)>(context->getProcAddress("glGetNamedBufferParameteriv"));
-    FlushMappedNamedBufferRange = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLintptr , GLsizei )>(context->getProcAddress("glFlushMappedNamedBufferRange"));
-    UnmapNamedBuffer = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glUnmapNamedBuffer"));
-    MapNamedBufferRange = reinterpret_cast<void * (QOPENGLF_APIENTRYP)(GLuint , GLintptr , GLsizei , GLbitfield )>(context->getProcAddress("glMapNamedBufferRange"));
-    MapNamedBuffer = reinterpret_cast<void * (QOPENGLF_APIENTRYP)(GLuint , GLenum )>(context->getProcAddress("glMapNamedBuffer"));
-    ClearNamedBufferSubData = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLintptr , GLsizei , GLenum , GLenum , const void *)>(context->getProcAddress("glClearNamedBufferSubData"));
-    ClearNamedBufferData = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLenum , GLenum , const void *)>(context->getProcAddress("glClearNamedBufferData"));
-    CopyNamedBufferSubData = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLintptr , GLintptr , GLsizei )>(context->getProcAddress("glCopyNamedBufferSubData"));
-    NamedBufferSubData = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLintptr , GLsizei , const void *)>(context->getProcAddress("glNamedBufferSubData"));
-    NamedBufferData = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , const void *, GLenum )>(context->getProcAddress("glNamedBufferData"));
-    NamedBufferStorage = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei , const void *, GLbitfield )>(context->getProcAddress("glNamedBufferStorage"));
-    CreateBuffers = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLuint *)>(context->getProcAddress("glCreateBuffers"));
-    GetTransformFeedbacki64_v = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLuint , GLint64 *)>(context->getProcAddress("glGetTransformFeedbacki64_v"));
-    GetTransformFeedbacki_v = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLuint , GLint *)>(context->getProcAddress("glGetTransformFeedbacki_v"));
-    GetTransformFeedbackiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum , GLint *)>(context->getProcAddress("glGetTransformFeedbackiv"));
-    TransformFeedbackBufferRange = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLuint , GLintptr , GLsizei )>(context->getProcAddress("glTransformFeedbackBufferRange"));
-    TransformFeedbackBufferBase = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLuint )>(context->getProcAddress("glTransformFeedbackBufferBase"));
-    CreateTransformFeedbacks = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLuint *)>(context->getProcAddress("glCreateTransformFeedbacks"));
-    ClipControl = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum )>(context->getProcAddress("glClipControl"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_4_5_CoreBackend, QT_OPENGL_4_5_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_4_5_CoreBackend::versionStatus()
 {
     return QOpenGLVersionStatus(4, 5, QOpenGLVersionStatus::CoreStatus);
@@ -1234,532 +527,11 @@ QOpenGLVersionStatus QOpenGLFunctions_4_5_CoreBackend::versionStatus()
 QOpenGLFunctions_1_0_DeprecatedBackend::QOpenGLFunctions_1_0_DeprecatedBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 1.0 deprecated functions
-#if defined(Q_OS_WIN)
-    HMODULE handle = static_cast<HMODULE>(QOpenGLContext::openGLModuleHandle());
-    if (!handle)
-        handle = GetModuleHandleA("opengl32.dll");
-    Translatef = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat )>(GetProcAddress(handle, "glTranslatef"));
-    Translated = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble )>(GetProcAddress(handle, "glTranslated"));
-    Scalef = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat )>(GetProcAddress(handle, "glScalef"));
-    Scaled = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble )>(GetProcAddress(handle, "glScaled"));
-    Rotatef = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat , GLfloat )>(GetProcAddress(handle, "glRotatef"));
-    Rotated = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble , GLdouble )>(GetProcAddress(handle, "glRotated"));
-    PushMatrix = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(GetProcAddress(handle, "glPushMatrix"));
-    PopMatrix = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(GetProcAddress(handle, "glPopMatrix"));
-    Ortho = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble , GLdouble , GLdouble , GLdouble )>(GetProcAddress(handle, "glOrtho"));
-    MultMatrixd = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(GetProcAddress(handle, "glMultMatrixd"));
-    MultMatrixf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(GetProcAddress(handle, "glMultMatrixf"));
-    MatrixMode = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(GetProcAddress(handle, "glMatrixMode"));
-    LoadMatrixd = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(GetProcAddress(handle, "glLoadMatrixd"));
-    LoadMatrixf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(GetProcAddress(handle, "glLoadMatrixf"));
-    LoadIdentity = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(GetProcAddress(handle, "glLoadIdentity"));
-    Frustum = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble , GLdouble , GLdouble , GLdouble )>(GetProcAddress(handle, "glFrustum"));
-    IsList = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLuint )>(GetProcAddress(handle, "glIsList"));
-    GetTexGeniv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *)>(GetProcAddress(handle, "glGetTexGeniv"));
-    GetTexGenfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat *)>(GetProcAddress(handle, "glGetTexGenfv"));
-    GetTexGendv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLdouble *)>(GetProcAddress(handle, "glGetTexGendv"));
-    GetTexEnviv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *)>(GetProcAddress(handle, "glGetTexEnviv"));
-    GetTexEnvfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat *)>(GetProcAddress(handle, "glGetTexEnvfv"));
-    GetPolygonStipple = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLubyte *)>(GetProcAddress(handle, "glGetPolygonStipple"));
-    GetPixelMapusv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLushort *)>(GetProcAddress(handle, "glGetPixelMapusv"));
-    GetPixelMapuiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint *)>(GetProcAddress(handle, "glGetPixelMapuiv"));
-    GetPixelMapfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat *)>(GetProcAddress(handle, "glGetPixelMapfv"));
-    GetMaterialiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *)>(GetProcAddress(handle, "glGetMaterialiv"));
-    GetMaterialfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat *)>(GetProcAddress(handle, "glGetMaterialfv"));
-    GetMapiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *)>(GetProcAddress(handle, "glGetMapiv"));
-    GetMapfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat *)>(GetProcAddress(handle, "glGetMapfv"));
-    GetMapdv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLdouble *)>(GetProcAddress(handle, "glGetMapdv"));
-    GetLightiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *)>(GetProcAddress(handle, "glGetLightiv"));
-    GetLightfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat *)>(GetProcAddress(handle, "glGetLightfv"));
-    GetClipPlane = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLdouble *)>(GetProcAddress(handle, "glGetClipPlane"));
-    DrawPixels = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLsizei , GLenum , GLenum , const GLvoid *)>(GetProcAddress(handle, "glDrawPixels"));
-    CopyPixels = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLsizei , GLsizei , GLenum )>(GetProcAddress(handle, "glCopyPixels"));
-    PixelMapusv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , const GLushort *)>(GetProcAddress(handle, "glPixelMapusv"));
-    PixelMapuiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , const GLuint *)>(GetProcAddress(handle, "glPixelMapuiv"));
-    PixelMapfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , const GLfloat *)>(GetProcAddress(handle, "glPixelMapfv"));
-    PixelTransferi = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint )>(GetProcAddress(handle, "glPixelTransferi"));
-    PixelTransferf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat )>(GetProcAddress(handle, "glPixelTransferf"));
-    PixelZoom = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat )>(GetProcAddress(handle, "glPixelZoom"));
-    AlphaFunc = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat )>(GetProcAddress(handle, "glAlphaFunc"));
-    EvalPoint2 = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint )>(GetProcAddress(handle, "glEvalPoint2"));
-    EvalMesh2 = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLint , GLint )>(GetProcAddress(handle, "glEvalMesh2"));
-    EvalPoint1 = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint )>(GetProcAddress(handle, "glEvalPoint1"));
-    EvalMesh1 = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint )>(GetProcAddress(handle, "glEvalMesh1"));
-    EvalCoord2fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(GetProcAddress(handle, "glEvalCoord2fv"));
-    EvalCoord2f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat )>(GetProcAddress(handle, "glEvalCoord2f"));
-    EvalCoord2dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(GetProcAddress(handle, "glEvalCoord2dv"));
-    EvalCoord2d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble )>(GetProcAddress(handle, "glEvalCoord2d"));
-    EvalCoord1fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(GetProcAddress(handle, "glEvalCoord1fv"));
-    EvalCoord1f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat )>(GetProcAddress(handle, "glEvalCoord1f"));
-    EvalCoord1dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(GetProcAddress(handle, "glEvalCoord1dv"));
-    EvalCoord1d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble )>(GetProcAddress(handle, "glEvalCoord1d"));
-    MapGrid2f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLfloat , GLfloat , GLint , GLfloat , GLfloat )>(GetProcAddress(handle, "glMapGrid2f"));
-    MapGrid2d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLdouble , GLdouble , GLint , GLdouble , GLdouble )>(GetProcAddress(handle, "glMapGrid2d"));
-    MapGrid1f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLfloat , GLfloat )>(GetProcAddress(handle, "glMapGrid1f"));
-    MapGrid1d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLdouble , GLdouble )>(GetProcAddress(handle, "glMapGrid1d"));
-    Map2f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat , GLfloat , GLint , GLint , GLfloat , GLfloat , GLint , GLint , const GLfloat *)>(GetProcAddress(handle, "glMap2f"));
-    Map2d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLdouble , GLdouble , GLint , GLint , GLdouble , GLdouble , GLint , GLint , const GLdouble *)>(GetProcAddress(handle, "glMap2d"));
-    Map1f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat , GLfloat , GLint , GLint , const GLfloat *)>(GetProcAddress(handle, "glMap1f"));
-    Map1d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLdouble , GLdouble , GLint , GLint , const GLdouble *)>(GetProcAddress(handle, "glMap1d"));
-    PushAttrib = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLbitfield )>(GetProcAddress(handle, "glPushAttrib"));
-    PopAttrib = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(GetProcAddress(handle, "glPopAttrib"));
-    Accum = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat )>(GetProcAddress(handle, "glAccum"));
-    IndexMask = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(GetProcAddress(handle, "glIndexMask"));
-    ClearIndex = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat )>(GetProcAddress(handle, "glClearIndex"));
-    ClearAccum = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat , GLfloat )>(GetProcAddress(handle, "glClearAccum"));
-    PushName = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(GetProcAddress(handle, "glPushName"));
-    PopName = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(GetProcAddress(handle, "glPopName"));
-    PassThrough = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat )>(GetProcAddress(handle, "glPassThrough"));
-    LoadName = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(GetProcAddress(handle, "glLoadName"));
-    InitNames = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(GetProcAddress(handle, "glInitNames"));
-    RenderMode = reinterpret_cast<GLint (QOPENGLF_APIENTRYP)(GLenum )>(GetProcAddress(handle, "glRenderMode"));
-    SelectBuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLuint *)>(GetProcAddress(handle, "glSelectBuffer"));
-    FeedbackBuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLenum , GLfloat *)>(GetProcAddress(handle, "glFeedbackBuffer"));
-    TexGeniv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLint *)>(GetProcAddress(handle, "glTexGeniv"));
-    TexGeni = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint )>(GetProcAddress(handle, "glTexGeni"));
-    TexGenfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLfloat *)>(GetProcAddress(handle, "glTexGenfv"));
-    TexGenf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat )>(GetProcAddress(handle, "glTexGenf"));
-    TexGendv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLdouble *)>(GetProcAddress(handle, "glTexGendv"));
-    TexGend = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLdouble )>(GetProcAddress(handle, "glTexGend"));
-    TexEnviv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLint *)>(GetProcAddress(handle, "glTexEnviv"));
-    TexEnvi = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint )>(GetProcAddress(handle, "glTexEnvi"));
-    TexEnvfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLfloat *)>(GetProcAddress(handle, "glTexEnvfv"));
-    TexEnvf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat )>(GetProcAddress(handle, "glTexEnvf"));
-    ShadeModel = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(GetProcAddress(handle, "glShadeModel"));
-    PolygonStipple = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLubyte *)>(GetProcAddress(handle, "glPolygonStipple"));
-    Materialiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLint *)>(GetProcAddress(handle, "glMaterialiv"));
-    Materiali = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint )>(GetProcAddress(handle, "glMateriali"));
-    Materialfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLfloat *)>(GetProcAddress(handle, "glMaterialfv"));
-    Materialf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat )>(GetProcAddress(handle, "glMaterialf"));
-    LineStipple = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLushort )>(GetProcAddress(handle, "glLineStipple"));
-    LightModeliv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLint *)>(GetProcAddress(handle, "glLightModeliv"));
-    LightModeli = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint )>(GetProcAddress(handle, "glLightModeli"));
-    LightModelfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLfloat *)>(GetProcAddress(handle, "glLightModelfv"));
-    LightModelf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat )>(GetProcAddress(handle, "glLightModelf"));
-    Lightiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLint *)>(GetProcAddress(handle, "glLightiv"));
-    Lighti = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint )>(GetProcAddress(handle, "glLighti"));
-    Lightfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLfloat *)>(GetProcAddress(handle, "glLightfv"));
-    Lightf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat )>(GetProcAddress(handle, "glLightf"));
-    Fogiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLint *)>(GetProcAddress(handle, "glFogiv"));
-    Fogi = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint )>(GetProcAddress(handle, "glFogi"));
-    Fogfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLfloat *)>(GetProcAddress(handle, "glFogfv"));
-    Fogf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat )>(GetProcAddress(handle, "glFogf"));
-    ColorMaterial = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum )>(GetProcAddress(handle, "glColorMaterial"));
-    ClipPlane = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLdouble *)>(GetProcAddress(handle, "glClipPlane"));
-    Vertex4sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(GetProcAddress(handle, "glVertex4sv"));
-    Vertex4s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort , GLshort )>(GetProcAddress(handle, "glVertex4s"));
-    Vertex4iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(GetProcAddress(handle, "glVertex4iv"));
-    Vertex4i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint , GLint )>(GetProcAddress(handle, "glVertex4i"));
-    Vertex4fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(GetProcAddress(handle, "glVertex4fv"));
-    Vertex4f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat , GLfloat )>(GetProcAddress(handle, "glVertex4f"));
-    Vertex4dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(GetProcAddress(handle, "glVertex4dv"));
-    Vertex4d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble , GLdouble )>(GetProcAddress(handle, "glVertex4d"));
-    Vertex3sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(GetProcAddress(handle, "glVertex3sv"));
-    Vertex3s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort )>(GetProcAddress(handle, "glVertex3s"));
-    Vertex3iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(GetProcAddress(handle, "glVertex3iv"));
-    Vertex3i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint )>(GetProcAddress(handle, "glVertex3i"));
-    Vertex3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(GetProcAddress(handle, "glVertex3fv"));
-    Vertex3f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat )>(GetProcAddress(handle, "glVertex3f"));
-    Vertex3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(GetProcAddress(handle, "glVertex3dv"));
-    Vertex3d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble )>(GetProcAddress(handle, "glVertex3d"));
-    Vertex2sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(GetProcAddress(handle, "glVertex2sv"));
-    Vertex2s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort )>(GetProcAddress(handle, "glVertex2s"));
-    Vertex2iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(GetProcAddress(handle, "glVertex2iv"));
-    Vertex2i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint )>(GetProcAddress(handle, "glVertex2i"));
-    Vertex2fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(GetProcAddress(handle, "glVertex2fv"));
-    Vertex2f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat )>(GetProcAddress(handle, "glVertex2f"));
-    Vertex2dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(GetProcAddress(handle, "glVertex2dv"));
-    Vertex2d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble )>(GetProcAddress(handle, "glVertex2d"));
-    TexCoord4sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(GetProcAddress(handle, "glTexCoord4sv"));
-    TexCoord4s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort , GLshort )>(GetProcAddress(handle, "glTexCoord4s"));
-    TexCoord4iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(GetProcAddress(handle, "glTexCoord4iv"));
-    TexCoord4i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint , GLint )>(GetProcAddress(handle, "glTexCoord4i"));
-    TexCoord4fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(GetProcAddress(handle, "glTexCoord4fv"));
-    TexCoord4f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat , GLfloat )>(GetProcAddress(handle, "glTexCoord4f"));
-    TexCoord4dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(GetProcAddress(handle, "glTexCoord4dv"));
-    TexCoord4d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble , GLdouble )>(GetProcAddress(handle, "glTexCoord4d"));
-    TexCoord3sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(GetProcAddress(handle, "glTexCoord3sv"));
-    TexCoord3s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort )>(GetProcAddress(handle, "glTexCoord3s"));
-    TexCoord3iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(GetProcAddress(handle, "glTexCoord3iv"));
-    TexCoord3i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint )>(GetProcAddress(handle, "glTexCoord3i"));
-    TexCoord3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(GetProcAddress(handle, "glTexCoord3fv"));
-    TexCoord3f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat )>(GetProcAddress(handle, "glTexCoord3f"));
-    TexCoord3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(GetProcAddress(handle, "glTexCoord3dv"));
-    TexCoord3d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble )>(GetProcAddress(handle, "glTexCoord3d"));
-    TexCoord2sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(GetProcAddress(handle, "glTexCoord2sv"));
-    TexCoord2s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort )>(GetProcAddress(handle, "glTexCoord2s"));
-    TexCoord2iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(GetProcAddress(handle, "glTexCoord2iv"));
-    TexCoord2i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint )>(GetProcAddress(handle, "glTexCoord2i"));
-    TexCoord2fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(GetProcAddress(handle, "glTexCoord2fv"));
-    TexCoord2f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat )>(GetProcAddress(handle, "glTexCoord2f"));
-    TexCoord2dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(GetProcAddress(handle, "glTexCoord2dv"));
-    TexCoord2d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble )>(GetProcAddress(handle, "glTexCoord2d"));
-    TexCoord1sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(GetProcAddress(handle, "glTexCoord1sv"));
-    TexCoord1s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort )>(GetProcAddress(handle, "glTexCoord1s"));
-    TexCoord1iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(GetProcAddress(handle, "glTexCoord1iv"));
-    TexCoord1i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint )>(GetProcAddress(handle, "glTexCoord1i"));
-    TexCoord1fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(GetProcAddress(handle, "glTexCoord1fv"));
-    TexCoord1f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat )>(GetProcAddress(handle, "glTexCoord1f"));
-    TexCoord1dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(GetProcAddress(handle, "glTexCoord1dv"));
-    TexCoord1d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble )>(GetProcAddress(handle, "glTexCoord1d"));
-    Rectsv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *, const GLshort *)>(GetProcAddress(handle, "glRectsv"));
-    Rects = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort , GLshort )>(GetProcAddress(handle, "glRects"));
-    Rectiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *, const GLint *)>(GetProcAddress(handle, "glRectiv"));
-    Recti = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint , GLint )>(GetProcAddress(handle, "glRecti"));
-    Rectfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *, const GLfloat *)>(GetProcAddress(handle, "glRectfv"));
-    Rectf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat , GLfloat )>(GetProcAddress(handle, "glRectf"));
-    Rectdv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *, const GLdouble *)>(GetProcAddress(handle, "glRectdv"));
-    Rectd = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble , GLdouble )>(GetProcAddress(handle, "glRectd"));
-    RasterPos4sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(GetProcAddress(handle, "glRasterPos4sv"));
-    RasterPos4s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort , GLshort )>(GetProcAddress(handle, "glRasterPos4s"));
-    RasterPos4iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(GetProcAddress(handle, "glRasterPos4iv"));
-    RasterPos4i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint , GLint )>(GetProcAddress(handle, "glRasterPos4i"));
-    RasterPos4fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(GetProcAddress(handle, "glRasterPos4fv"));
-    RasterPos4f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat , GLfloat )>(GetProcAddress(handle, "glRasterPos4f"));
-    RasterPos4dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(GetProcAddress(handle, "glRasterPos4dv"));
-    RasterPos4d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble , GLdouble )>(GetProcAddress(handle, "glRasterPos4d"));
-    RasterPos3sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(GetProcAddress(handle, "glRasterPos3sv"));
-    RasterPos3s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort )>(GetProcAddress(handle, "glRasterPos3s"));
-    RasterPos3iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(GetProcAddress(handle, "glRasterPos3iv"));
-    RasterPos3i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint )>(GetProcAddress(handle, "glRasterPos3i"));
-    RasterPos3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(GetProcAddress(handle, "glRasterPos3fv"));
-    RasterPos3f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat )>(GetProcAddress(handle, "glRasterPos3f"));
-    RasterPos3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(GetProcAddress(handle, "glRasterPos3dv"));
-    RasterPos3d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble )>(GetProcAddress(handle, "glRasterPos3d"));
-    RasterPos2sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(GetProcAddress(handle, "glRasterPos2sv"));
-    RasterPos2s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort )>(GetProcAddress(handle, "glRasterPos2s"));
-    RasterPos2iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(GetProcAddress(handle, "glRasterPos2iv"));
-    RasterPos2i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint )>(GetProcAddress(handle, "glRasterPos2i"));
-    RasterPos2fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(GetProcAddress(handle, "glRasterPos2fv"));
-    RasterPos2f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat )>(GetProcAddress(handle, "glRasterPos2f"));
-    RasterPos2dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(GetProcAddress(handle, "glRasterPos2dv"));
-    RasterPos2d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble )>(GetProcAddress(handle, "glRasterPos2d"));
-    Normal3sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(GetProcAddress(handle, "glNormal3sv"));
-    Normal3s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort )>(GetProcAddress(handle, "glNormal3s"));
-    Normal3iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(GetProcAddress(handle, "glNormal3iv"));
-    Normal3i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint )>(GetProcAddress(handle, "glNormal3i"));
-    Normal3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(GetProcAddress(handle, "glNormal3fv"));
-    Normal3f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat )>(GetProcAddress(handle, "glNormal3f"));
-    Normal3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(GetProcAddress(handle, "glNormal3dv"));
-    Normal3d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble )>(GetProcAddress(handle, "glNormal3d"));
-    Normal3bv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLbyte *)>(GetProcAddress(handle, "glNormal3bv"));
-    Normal3b = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLbyte , GLbyte , GLbyte )>(GetProcAddress(handle, "glNormal3b"));
-    Indexsv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(GetProcAddress(handle, "glIndexsv"));
-    Indexs = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort )>(GetProcAddress(handle, "glIndexs"));
-    Indexiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(GetProcAddress(handle, "glIndexiv"));
-    Indexi = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint )>(GetProcAddress(handle, "glIndexi"));
-    Indexfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(GetProcAddress(handle, "glIndexfv"));
-    Indexf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat )>(GetProcAddress(handle, "glIndexf"));
-    Indexdv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(GetProcAddress(handle, "glIndexdv"));
-    Indexd = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble )>(GetProcAddress(handle, "glIndexd"));
-    End = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(GetProcAddress(handle, "glEnd"));
-    EdgeFlagv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLboolean *)>(GetProcAddress(handle, "glEdgeFlagv"));
-    EdgeFlag = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLboolean )>(GetProcAddress(handle, "glEdgeFlag"));
-    Color4usv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLushort *)>(GetProcAddress(handle, "glColor4usv"));
-    Color4us = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLushort , GLushort , GLushort , GLushort )>(GetProcAddress(handle, "glColor4us"));
-    Color4uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLuint *)>(GetProcAddress(handle, "glColor4uiv"));
-    Color4ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLuint , GLuint )>(GetProcAddress(handle, "glColor4ui"));
-    Color4ubv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLubyte *)>(GetProcAddress(handle, "glColor4ubv"));
-    Color4ub = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLubyte , GLubyte , GLubyte , GLubyte )>(GetProcAddress(handle, "glColor4ub"));
-    Color4sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(GetProcAddress(handle, "glColor4sv"));
-    Color4s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort , GLshort )>(GetProcAddress(handle, "glColor4s"));
-    Color4iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(GetProcAddress(handle, "glColor4iv"));
-    Color4i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint , GLint )>(GetProcAddress(handle, "glColor4i"));
-    Color4fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(GetProcAddress(handle, "glColor4fv"));
-    Color4f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat , GLfloat )>(GetProcAddress(handle, "glColor4f"));
-    Color4dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(GetProcAddress(handle, "glColor4dv"));
-    Color4d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble , GLdouble )>(GetProcAddress(handle, "glColor4d"));
-    Color4bv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLbyte *)>(GetProcAddress(handle, "glColor4bv"));
-    Color4b = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLbyte , GLbyte , GLbyte , GLbyte )>(GetProcAddress(handle, "glColor4b"));
-    Color3usv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLushort *)>(GetProcAddress(handle, "glColor3usv"));
-    Color3us = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLushort , GLushort , GLushort )>(GetProcAddress(handle, "glColor3us"));
-    Color3uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLuint *)>(GetProcAddress(handle, "glColor3uiv"));
-    Color3ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLuint )>(GetProcAddress(handle, "glColor3ui"));
-    Color3ubv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLubyte *)>(GetProcAddress(handle, "glColor3ubv"));
-    Color3ub = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLubyte , GLubyte , GLubyte )>(GetProcAddress(handle, "glColor3ub"));
-    Color3sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(GetProcAddress(handle, "glColor3sv"));
-    Color3s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort )>(GetProcAddress(handle, "glColor3s"));
-    Color3iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(GetProcAddress(handle, "glColor3iv"));
-    Color3i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint )>(GetProcAddress(handle, "glColor3i"));
-    Color3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(GetProcAddress(handle, "glColor3fv"));
-    Color3f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat )>(GetProcAddress(handle, "glColor3f"));
-    Color3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(GetProcAddress(handle, "glColor3dv"));
-    Color3d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble )>(GetProcAddress(handle, "glColor3d"));
-    Color3bv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLbyte *)>(GetProcAddress(handle, "glColor3bv"));
-    Color3b = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLbyte , GLbyte , GLbyte )>(GetProcAddress(handle, "glColor3b"));
-    Bitmap = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLsizei , GLfloat , GLfloat , GLfloat , GLfloat , const GLubyte *)>(GetProcAddress(handle, "glBitmap"));
-    Begin = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(GetProcAddress(handle, "glBegin"));
-    ListBase = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(GetProcAddress(handle, "glListBase"));
-    GenLists = reinterpret_cast<GLuint (QOPENGLF_APIENTRYP)(GLsizei )>(GetProcAddress(handle, "glGenLists"));
-    DeleteLists = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei )>(GetProcAddress(handle, "glDeleteLists"));
-    CallLists = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLenum , const GLvoid *)>(GetProcAddress(handle, "glCallLists"));
-    CallList = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(GetProcAddress(handle, "glCallList"));
-    EndList = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(GetProcAddress(handle, "glEndList"));
-    NewList = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum )>(GetProcAddress(handle, "glNewList"));
-#else
-    Translatef = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glTranslatef"));
-    Translated = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glTranslated"));
-    Scalef = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glScalef"));
-    Scaled = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glScaled"));
-    Rotatef = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glRotatef"));
-    Rotated = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glRotated"));
-    PushMatrix = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(context->getProcAddress("glPushMatrix"));
-    PopMatrix = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(context->getProcAddress("glPopMatrix"));
-    Ortho = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble , GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glOrtho"));
-    MultMatrixd = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glMultMatrixd"));
-    MultMatrixf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glMultMatrixf"));
-    MatrixMode = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glMatrixMode"));
-    LoadMatrixd = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glLoadMatrixd"));
-    LoadMatrixf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glLoadMatrixf"));
-    LoadIdentity = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(context->getProcAddress("glLoadIdentity"));
-    Frustum = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble , GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glFrustum"));
-    IsList = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glIsList"));
-    GetTexGeniv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *)>(context->getProcAddress("glGetTexGeniv"));
-    GetTexGenfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat *)>(context->getProcAddress("glGetTexGenfv"));
-    GetTexGendv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLdouble *)>(context->getProcAddress("glGetTexGendv"));
-    GetTexEnviv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *)>(context->getProcAddress("glGetTexEnviv"));
-    GetTexEnvfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat *)>(context->getProcAddress("glGetTexEnvfv"));
-    GetPolygonStipple = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLubyte *)>(context->getProcAddress("glGetPolygonStipple"));
-    GetPixelMapusv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLushort *)>(context->getProcAddress("glGetPixelMapusv"));
-    GetPixelMapuiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint *)>(context->getProcAddress("glGetPixelMapuiv"));
-    GetPixelMapfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat *)>(context->getProcAddress("glGetPixelMapfv"));
-    GetMaterialiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *)>(context->getProcAddress("glGetMaterialiv"));
-    GetMaterialfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat *)>(context->getProcAddress("glGetMaterialfv"));
-    GetMapiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *)>(context->getProcAddress("glGetMapiv"));
-    GetMapfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat *)>(context->getProcAddress("glGetMapfv"));
-    GetMapdv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLdouble *)>(context->getProcAddress("glGetMapdv"));
-    GetLightiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *)>(context->getProcAddress("glGetLightiv"));
-    GetLightfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat *)>(context->getProcAddress("glGetLightfv"));
-    GetClipPlane = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLdouble *)>(context->getProcAddress("glGetClipPlane"));
-    DrawPixels = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLsizei , GLenum , GLenum , const GLvoid *)>(context->getProcAddress("glDrawPixels"));
-    CopyPixels = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLsizei , GLsizei , GLenum )>(context->getProcAddress("glCopyPixels"));
-    PixelMapusv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , const GLushort *)>(context->getProcAddress("glPixelMapusv"));
-    PixelMapuiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , const GLuint *)>(context->getProcAddress("glPixelMapuiv"));
-    PixelMapfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , const GLfloat *)>(context->getProcAddress("glPixelMapfv"));
-    PixelTransferi = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint )>(context->getProcAddress("glPixelTransferi"));
-    PixelTransferf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat )>(context->getProcAddress("glPixelTransferf"));
-    PixelZoom = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat )>(context->getProcAddress("glPixelZoom"));
-    AlphaFunc = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat )>(context->getProcAddress("glAlphaFunc"));
-    EvalPoint2 = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint )>(context->getProcAddress("glEvalPoint2"));
-    EvalMesh2 = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLint , GLint )>(context->getProcAddress("glEvalMesh2"));
-    EvalPoint1 = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint )>(context->getProcAddress("glEvalPoint1"));
-    EvalMesh1 = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint )>(context->getProcAddress("glEvalMesh1"));
-    EvalCoord2fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glEvalCoord2fv"));
-    EvalCoord2f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat )>(context->getProcAddress("glEvalCoord2f"));
-    EvalCoord2dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glEvalCoord2dv"));
-    EvalCoord2d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble )>(context->getProcAddress("glEvalCoord2d"));
-    EvalCoord1fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glEvalCoord1fv"));
-    EvalCoord1f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat )>(context->getProcAddress("glEvalCoord1f"));
-    EvalCoord1dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glEvalCoord1dv"));
-    EvalCoord1d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble )>(context->getProcAddress("glEvalCoord1d"));
-    MapGrid2f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLfloat , GLfloat , GLint , GLfloat , GLfloat )>(context->getProcAddress("glMapGrid2f"));
-    MapGrid2d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLdouble , GLdouble , GLint , GLdouble , GLdouble )>(context->getProcAddress("glMapGrid2d"));
-    MapGrid1f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLfloat , GLfloat )>(context->getProcAddress("glMapGrid1f"));
-    MapGrid1d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLdouble , GLdouble )>(context->getProcAddress("glMapGrid1d"));
-    Map2f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat , GLfloat , GLint , GLint , GLfloat , GLfloat , GLint , GLint , const GLfloat *)>(context->getProcAddress("glMap2f"));
-    Map2d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLdouble , GLdouble , GLint , GLint , GLdouble , GLdouble , GLint , GLint , const GLdouble *)>(context->getProcAddress("glMap2d"));
-    Map1f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat , GLfloat , GLint , GLint , const GLfloat *)>(context->getProcAddress("glMap1f"));
-    Map1d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLdouble , GLdouble , GLint , GLint , const GLdouble *)>(context->getProcAddress("glMap1d"));
-    PushAttrib = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLbitfield )>(context->getProcAddress("glPushAttrib"));
-    PopAttrib = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(context->getProcAddress("glPopAttrib"));
-    Accum = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat )>(context->getProcAddress("glAccum"));
-    IndexMask = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glIndexMask"));
-    ClearIndex = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat )>(context->getProcAddress("glClearIndex"));
-    ClearAccum = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glClearAccum"));
-    PushName = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glPushName"));
-    PopName = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(context->getProcAddress("glPopName"));
-    PassThrough = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat )>(context->getProcAddress("glPassThrough"));
-    LoadName = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glLoadName"));
-    InitNames = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(context->getProcAddress("glInitNames"));
-    RenderMode = reinterpret_cast<GLint (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glRenderMode"));
-    SelectBuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLuint *)>(context->getProcAddress("glSelectBuffer"));
-    FeedbackBuffer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLenum , GLfloat *)>(context->getProcAddress("glFeedbackBuffer"));
-    TexGeniv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLint *)>(context->getProcAddress("glTexGeniv"));
-    TexGeni = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint )>(context->getProcAddress("glTexGeni"));
-    TexGenfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLfloat *)>(context->getProcAddress("glTexGenfv"));
-    TexGenf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat )>(context->getProcAddress("glTexGenf"));
-    TexGendv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLdouble *)>(context->getProcAddress("glTexGendv"));
-    TexGend = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLdouble )>(context->getProcAddress("glTexGend"));
-    TexEnviv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLint *)>(context->getProcAddress("glTexEnviv"));
-    TexEnvi = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint )>(context->getProcAddress("glTexEnvi"));
-    TexEnvfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLfloat *)>(context->getProcAddress("glTexEnvfv"));
-    TexEnvf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat )>(context->getProcAddress("glTexEnvf"));
-    ShadeModel = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glShadeModel"));
-    PolygonStipple = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLubyte *)>(context->getProcAddress("glPolygonStipple"));
-    Materialiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLint *)>(context->getProcAddress("glMaterialiv"));
-    Materiali = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint )>(context->getProcAddress("glMateriali"));
-    Materialfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLfloat *)>(context->getProcAddress("glMaterialfv"));
-    Materialf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat )>(context->getProcAddress("glMaterialf"));
-    LineStipple = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLushort )>(context->getProcAddress("glLineStipple"));
-    LightModeliv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLint *)>(context->getProcAddress("glLightModeliv"));
-    LightModeli = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint )>(context->getProcAddress("glLightModeli"));
-    LightModelfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLfloat *)>(context->getProcAddress("glLightModelfv"));
-    LightModelf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat )>(context->getProcAddress("glLightModelf"));
-    Lightiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLint *)>(context->getProcAddress("glLightiv"));
-    Lighti = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint )>(context->getProcAddress("glLighti"));
-    Lightfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLfloat *)>(context->getProcAddress("glLightfv"));
-    Lightf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat )>(context->getProcAddress("glLightf"));
-    Fogiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLint *)>(context->getProcAddress("glFogiv"));
-    Fogi = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint )>(context->getProcAddress("glFogi"));
-    Fogfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLfloat *)>(context->getProcAddress("glFogfv"));
-    Fogf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat )>(context->getProcAddress("glFogf"));
-    ColorMaterial = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum )>(context->getProcAddress("glColorMaterial"));
-    ClipPlane = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLdouble *)>(context->getProcAddress("glClipPlane"));
-    Vertex4sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(context->getProcAddress("glVertex4sv"));
-    Vertex4s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort , GLshort )>(context->getProcAddress("glVertex4s"));
-    Vertex4iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(context->getProcAddress("glVertex4iv"));
-    Vertex4i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint , GLint )>(context->getProcAddress("glVertex4i"));
-    Vertex4fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glVertex4fv"));
-    Vertex4f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glVertex4f"));
-    Vertex4dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glVertex4dv"));
-    Vertex4d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glVertex4d"));
-    Vertex3sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(context->getProcAddress("glVertex3sv"));
-    Vertex3s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort )>(context->getProcAddress("glVertex3s"));
-    Vertex3iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(context->getProcAddress("glVertex3iv"));
-    Vertex3i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint )>(context->getProcAddress("glVertex3i"));
-    Vertex3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glVertex3fv"));
-    Vertex3f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glVertex3f"));
-    Vertex3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glVertex3dv"));
-    Vertex3d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glVertex3d"));
-    Vertex2sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(context->getProcAddress("glVertex2sv"));
-    Vertex2s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort )>(context->getProcAddress("glVertex2s"));
-    Vertex2iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(context->getProcAddress("glVertex2iv"));
-    Vertex2i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint )>(context->getProcAddress("glVertex2i"));
-    Vertex2fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glVertex2fv"));
-    Vertex2f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat )>(context->getProcAddress("glVertex2f"));
-    Vertex2dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glVertex2dv"));
-    Vertex2d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble )>(context->getProcAddress("glVertex2d"));
-    TexCoord4sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(context->getProcAddress("glTexCoord4sv"));
-    TexCoord4s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort , GLshort )>(context->getProcAddress("glTexCoord4s"));
-    TexCoord4iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(context->getProcAddress("glTexCoord4iv"));
-    TexCoord4i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint , GLint )>(context->getProcAddress("glTexCoord4i"));
-    TexCoord4fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glTexCoord4fv"));
-    TexCoord4f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glTexCoord4f"));
-    TexCoord4dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glTexCoord4dv"));
-    TexCoord4d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glTexCoord4d"));
-    TexCoord3sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(context->getProcAddress("glTexCoord3sv"));
-    TexCoord3s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort )>(context->getProcAddress("glTexCoord3s"));
-    TexCoord3iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(context->getProcAddress("glTexCoord3iv"));
-    TexCoord3i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint )>(context->getProcAddress("glTexCoord3i"));
-    TexCoord3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glTexCoord3fv"));
-    TexCoord3f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glTexCoord3f"));
-    TexCoord3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glTexCoord3dv"));
-    TexCoord3d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glTexCoord3d"));
-    TexCoord2sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(context->getProcAddress("glTexCoord2sv"));
-    TexCoord2s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort )>(context->getProcAddress("glTexCoord2s"));
-    TexCoord2iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(context->getProcAddress("glTexCoord2iv"));
-    TexCoord2i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint )>(context->getProcAddress("glTexCoord2i"));
-    TexCoord2fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glTexCoord2fv"));
-    TexCoord2f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat )>(context->getProcAddress("glTexCoord2f"));
-    TexCoord2dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glTexCoord2dv"));
-    TexCoord2d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble )>(context->getProcAddress("glTexCoord2d"));
-    TexCoord1sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(context->getProcAddress("glTexCoord1sv"));
-    TexCoord1s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort )>(context->getProcAddress("glTexCoord1s"));
-    TexCoord1iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(context->getProcAddress("glTexCoord1iv"));
-    TexCoord1i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint )>(context->getProcAddress("glTexCoord1i"));
-    TexCoord1fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glTexCoord1fv"));
-    TexCoord1f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat )>(context->getProcAddress("glTexCoord1f"));
-    TexCoord1dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glTexCoord1dv"));
-    TexCoord1d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble )>(context->getProcAddress("glTexCoord1d"));
-    Rectsv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *, const GLshort *)>(context->getProcAddress("glRectsv"));
-    Rects = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort , GLshort )>(context->getProcAddress("glRects"));
-    Rectiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *, const GLint *)>(context->getProcAddress("glRectiv"));
-    Recti = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint , GLint )>(context->getProcAddress("glRecti"));
-    Rectfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *, const GLfloat *)>(context->getProcAddress("glRectfv"));
-    Rectf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glRectf"));
-    Rectdv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *, const GLdouble *)>(context->getProcAddress("glRectdv"));
-    Rectd = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glRectd"));
-    RasterPos4sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(context->getProcAddress("glRasterPos4sv"));
-    RasterPos4s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort , GLshort )>(context->getProcAddress("glRasterPos4s"));
-    RasterPos4iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(context->getProcAddress("glRasterPos4iv"));
-    RasterPos4i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint , GLint )>(context->getProcAddress("glRasterPos4i"));
-    RasterPos4fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glRasterPos4fv"));
-    RasterPos4f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glRasterPos4f"));
-    RasterPos4dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glRasterPos4dv"));
-    RasterPos4d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glRasterPos4d"));
-    RasterPos3sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(context->getProcAddress("glRasterPos3sv"));
-    RasterPos3s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort )>(context->getProcAddress("glRasterPos3s"));
-    RasterPos3iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(context->getProcAddress("glRasterPos3iv"));
-    RasterPos3i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint )>(context->getProcAddress("glRasterPos3i"));
-    RasterPos3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glRasterPos3fv"));
-    RasterPos3f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glRasterPos3f"));
-    RasterPos3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glRasterPos3dv"));
-    RasterPos3d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glRasterPos3d"));
-    RasterPos2sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(context->getProcAddress("glRasterPos2sv"));
-    RasterPos2s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort )>(context->getProcAddress("glRasterPos2s"));
-    RasterPos2iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(context->getProcAddress("glRasterPos2iv"));
-    RasterPos2i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint )>(context->getProcAddress("glRasterPos2i"));
-    RasterPos2fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glRasterPos2fv"));
-    RasterPos2f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat )>(context->getProcAddress("glRasterPos2f"));
-    RasterPos2dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glRasterPos2dv"));
-    RasterPos2d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble )>(context->getProcAddress("glRasterPos2d"));
-    Normal3sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(context->getProcAddress("glNormal3sv"));
-    Normal3s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort )>(context->getProcAddress("glNormal3s"));
-    Normal3iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(context->getProcAddress("glNormal3iv"));
-    Normal3i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint )>(context->getProcAddress("glNormal3i"));
-    Normal3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glNormal3fv"));
-    Normal3f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glNormal3f"));
-    Normal3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glNormal3dv"));
-    Normal3d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glNormal3d"));
-    Normal3bv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLbyte *)>(context->getProcAddress("glNormal3bv"));
-    Normal3b = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLbyte , GLbyte , GLbyte )>(context->getProcAddress("glNormal3b"));
-    Indexsv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(context->getProcAddress("glIndexsv"));
-    Indexs = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort )>(context->getProcAddress("glIndexs"));
-    Indexiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(context->getProcAddress("glIndexiv"));
-    Indexi = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint )>(context->getProcAddress("glIndexi"));
-    Indexfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glIndexfv"));
-    Indexf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat )>(context->getProcAddress("glIndexf"));
-    Indexdv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glIndexdv"));
-    Indexd = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble )>(context->getProcAddress("glIndexd"));
-    End = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(context->getProcAddress("glEnd"));
-    EdgeFlagv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLboolean *)>(context->getProcAddress("glEdgeFlagv"));
-    EdgeFlag = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLboolean )>(context->getProcAddress("glEdgeFlag"));
-    Color4usv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLushort *)>(context->getProcAddress("glColor4usv"));
-    Color4us = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLushort , GLushort , GLushort , GLushort )>(context->getProcAddress("glColor4us"));
-    Color4uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLuint *)>(context->getProcAddress("glColor4uiv"));
-    Color4ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLuint , GLuint )>(context->getProcAddress("glColor4ui"));
-    Color4ubv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLubyte *)>(context->getProcAddress("glColor4ubv"));
-    Color4ub = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLubyte , GLubyte , GLubyte , GLubyte )>(context->getProcAddress("glColor4ub"));
-    Color4sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(context->getProcAddress("glColor4sv"));
-    Color4s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort , GLshort )>(context->getProcAddress("glColor4s"));
-    Color4iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(context->getProcAddress("glColor4iv"));
-    Color4i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint , GLint )>(context->getProcAddress("glColor4i"));
-    Color4fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glColor4fv"));
-    Color4f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glColor4f"));
-    Color4dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glColor4dv"));
-    Color4d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glColor4d"));
-    Color4bv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLbyte *)>(context->getProcAddress("glColor4bv"));
-    Color4b = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLbyte , GLbyte , GLbyte , GLbyte )>(context->getProcAddress("glColor4b"));
-    Color3usv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLushort *)>(context->getProcAddress("glColor3usv"));
-    Color3us = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLushort , GLushort , GLushort )>(context->getProcAddress("glColor3us"));
-    Color3uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLuint *)>(context->getProcAddress("glColor3uiv"));
-    Color3ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLuint )>(context->getProcAddress("glColor3ui"));
-    Color3ubv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLubyte *)>(context->getProcAddress("glColor3ubv"));
-    Color3ub = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLubyte , GLubyte , GLubyte )>(context->getProcAddress("glColor3ub"));
-    Color3sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(context->getProcAddress("glColor3sv"));
-    Color3s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort )>(context->getProcAddress("glColor3s"));
-    Color3iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(context->getProcAddress("glColor3iv"));
-    Color3i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint )>(context->getProcAddress("glColor3i"));
-    Color3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glColor3fv"));
-    Color3f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glColor3f"));
-    Color3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glColor3dv"));
-    Color3d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glColor3d"));
-    Color3bv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLbyte *)>(context->getProcAddress("glColor3bv"));
-    Color3b = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLbyte , GLbyte , GLbyte )>(context->getProcAddress("glColor3b"));
-    Bitmap = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLsizei , GLfloat , GLfloat , GLfloat , GLfloat , const GLubyte *)>(context->getProcAddress("glBitmap"));
-    Begin = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glBegin"));
-    ListBase = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glListBase"));
-    GenLists = reinterpret_cast<GLuint (QOPENGLF_APIENTRYP)(GLsizei )>(context->getProcAddress("glGenLists"));
-    DeleteLists = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLsizei )>(context->getProcAddress("glDeleteLists"));
-    CallLists = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLenum , const GLvoid *)>(context->getProcAddress("glCallLists"));
-    CallList = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint )>(context->getProcAddress("glCallList"));
-    EndList = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(context->getProcAddress("glEndList"));
-    NewList = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLenum )>(context->getProcAddress("glNewList"));
-#endif
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT_WIN(QOpenGLFunctions_1_0_DeprecatedBackend, QT_OPENGL_1_0_DEPRECATED_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_1_0_DeprecatedBackend::versionStatus()
 {
     return QOpenGLVersionStatus(1, 0, QOpenGLVersionStatus::DeprecatedStatus);
@@ -1768,50 +540,11 @@ QOpenGLVersionStatus QOpenGLFunctions_1_0_DeprecatedBackend::versionStatus()
 QOpenGLFunctions_1_1_DeprecatedBackend::QOpenGLFunctions_1_1_DeprecatedBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 1.1 deprecated functions
-#if defined(Q_OS_WIN)
-    HMODULE handle = static_cast<HMODULE>(QOpenGLContext::openGLModuleHandle());
-    if (!handle)
-        handle = GetModuleHandleA("opengl32.dll");
-    PushClientAttrib = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLbitfield )>(GetProcAddress(handle, "glPushClientAttrib"));
-    PopClientAttrib = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(GetProcAddress(handle, "glPopClientAttrib"));
-    Indexubv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLubyte *)>(GetProcAddress(handle, "glIndexubv"));
-    Indexub = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLubyte )>(GetProcAddress(handle, "glIndexub"));
-    PrioritizeTextures = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , const GLuint *, const GLfloat *)>(GetProcAddress(handle, "glPrioritizeTextures"));
-    AreTexturesResident = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLsizei , const GLuint *, GLboolean *)>(GetProcAddress(handle, "glAreTexturesResident"));
-    VertexPointer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLenum , GLsizei , const GLvoid *)>(GetProcAddress(handle, "glVertexPointer"));
-    TexCoordPointer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLenum , GLsizei , const GLvoid *)>(GetProcAddress(handle, "glTexCoordPointer"));
-    NormalPointer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , const GLvoid *)>(GetProcAddress(handle, "glNormalPointer"));
-    InterleavedArrays = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , const GLvoid *)>(GetProcAddress(handle, "glInterleavedArrays"));
-    GetPointerv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLvoid * *)>(GetProcAddress(handle, "glGetPointerv"));
-    IndexPointer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , const GLvoid *)>(GetProcAddress(handle, "glIndexPointer"));
-    EnableClientState = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(GetProcAddress(handle, "glEnableClientState"));
-    EdgeFlagPointer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , const GLvoid *)>(GetProcAddress(handle, "glEdgeFlagPointer"));
-    DisableClientState = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(GetProcAddress(handle, "glDisableClientState"));
-    ColorPointer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLenum , GLsizei , const GLvoid *)>(GetProcAddress(handle, "glColorPointer"));
-    ArrayElement = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint )>(GetProcAddress(handle, "glArrayElement"));
-#else
-    PushClientAttrib = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLbitfield )>(context->getProcAddress("glPushClientAttrib"));
-    PopClientAttrib = reinterpret_cast<void (QOPENGLF_APIENTRYP)()>(context->getProcAddress("glPopClientAttrib"));
-    Indexubv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLubyte *)>(context->getProcAddress("glIndexubv"));
-    Indexub = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLubyte )>(context->getProcAddress("glIndexub"));
-    PrioritizeTextures = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , const GLuint *, const GLfloat *)>(context->getProcAddress("glPrioritizeTextures"));
-    AreTexturesResident = reinterpret_cast<GLboolean (QOPENGLF_APIENTRYP)(GLsizei , const GLuint *, GLboolean *)>(context->getProcAddress("glAreTexturesResident"));
-    VertexPointer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLenum , GLsizei , const GLvoid *)>(context->getProcAddress("glVertexPointer"));
-    TexCoordPointer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLenum , GLsizei , const GLvoid *)>(context->getProcAddress("glTexCoordPointer"));
-    NormalPointer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , const GLvoid *)>(context->getProcAddress("glNormalPointer"));
-    InterleavedArrays = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , const GLvoid *)>(context->getProcAddress("glInterleavedArrays"));
-    GetPointerv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLvoid * *)>(context->getProcAddress("glGetPointerv"));
-    IndexPointer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , const GLvoid *)>(context->getProcAddress("glIndexPointer"));
-    EnableClientState = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glEnableClientState"));
-    EdgeFlagPointer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , const GLvoid *)>(context->getProcAddress("glEdgeFlagPointer"));
-    DisableClientState = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glDisableClientState"));
-    ColorPointer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLenum , GLsizei , const GLvoid *)>(context->getProcAddress("glColorPointer"));
-    ArrayElement = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint )>(context->getProcAddress("glArrayElement"));
-#endif
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT_WIN(QOpenGLFunctions_1_1_DeprecatedBackend, QT_OPENGL_1_1_DEPRECATED_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_1_1_DeprecatedBackend::versionStatus()
 {
     return QOpenGLVersionStatus(1, 1, QOpenGLVersionStatus::DeprecatedStatus);
@@ -1820,42 +553,11 @@ QOpenGLVersionStatus QOpenGLFunctions_1_1_DeprecatedBackend::versionStatus()
 QOpenGLFunctions_1_2_DeprecatedBackend::QOpenGLFunctions_1_2_DeprecatedBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 1.2 deprecated functions
-    ResetMinmax = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glResetMinmax"));
-    ResetHistogram = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glResetHistogram"));
-    Minmax = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLboolean )>(context->getProcAddress("glMinmax"));
-    Histogram = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLenum , GLboolean )>(context->getProcAddress("glHistogram"));
-    GetMinmaxParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *)>(context->getProcAddress("glGetMinmaxParameteriv"));
-    GetMinmaxParameterfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat *)>(context->getProcAddress("glGetMinmaxParameterfv"));
-    GetMinmax = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLboolean , GLenum , GLenum , GLvoid *)>(context->getProcAddress("glGetMinmax"));
-    GetHistogramParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *)>(context->getProcAddress("glGetHistogramParameteriv"));
-    GetHistogramParameterfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat *)>(context->getProcAddress("glGetHistogramParameterfv"));
-    GetHistogram = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLboolean , GLenum , GLenum , GLvoid *)>(context->getProcAddress("glGetHistogram"));
-    SeparableFilter2D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLsizei , GLsizei , GLenum , GLenum , const GLvoid *, const GLvoid *)>(context->getProcAddress("glSeparableFilter2D"));
-    GetSeparableFilter = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLenum , GLvoid *, GLvoid *, GLvoid *)>(context->getProcAddress("glGetSeparableFilter"));
-    GetConvolutionParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *)>(context->getProcAddress("glGetConvolutionParameteriv"));
-    GetConvolutionParameterfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat *)>(context->getProcAddress("glGetConvolutionParameterfv"));
-    GetConvolutionFilter = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLenum , GLvoid *)>(context->getProcAddress("glGetConvolutionFilter"));
-    CopyConvolutionFilter2D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint , GLint , GLsizei , GLsizei )>(context->getProcAddress("glCopyConvolutionFilter2D"));
-    CopyConvolutionFilter1D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint , GLint , GLsizei )>(context->getProcAddress("glCopyConvolutionFilter1D"));
-    ConvolutionParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLint *)>(context->getProcAddress("glConvolutionParameteriv"));
-    ConvolutionParameteri = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint )>(context->getProcAddress("glConvolutionParameteri"));
-    ConvolutionParameterfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLfloat *)>(context->getProcAddress("glConvolutionParameterfv"));
-    ConvolutionParameterf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat )>(context->getProcAddress("glConvolutionParameterf"));
-    ConvolutionFilter2D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLsizei , GLsizei , GLenum , GLenum , const GLvoid *)>(context->getProcAddress("glConvolutionFilter2D"));
-    ConvolutionFilter1D = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLsizei , GLenum , GLenum , const GLvoid *)>(context->getProcAddress("glConvolutionFilter1D"));
-    CopyColorSubTable = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLint , GLint , GLsizei )>(context->getProcAddress("glCopyColorSubTable"));
-    ColorSubTable = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLsizei , GLenum , GLenum , const GLvoid *)>(context->getProcAddress("glColorSubTable"));
-    GetColorTableParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint *)>(context->getProcAddress("glGetColorTableParameteriv"));
-    GetColorTableParameterfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLfloat *)>(context->getProcAddress("glGetColorTableParameterfv"));
-    GetColorTable = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLenum , GLvoid *)>(context->getProcAddress("glGetColorTable"));
-    CopyColorTable = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLint , GLint , GLsizei )>(context->getProcAddress("glCopyColorTable"));
-    ColorTableParameteriv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLint *)>(context->getProcAddress("glColorTableParameteriv"));
-    ColorTableParameterfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLfloat *)>(context->getProcAddress("glColorTableParameterfv"));
-    ColorTable = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLsizei , GLenum , GLenum , const GLvoid *)>(context->getProcAddress("glColorTable"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_1_2_DeprecatedBackend, QT_OPENGL_1_2_DEPRECATED_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_1_2_DeprecatedBackend::versionStatus()
 {
     return QOpenGLVersionStatus(1, 2, QOpenGLVersionStatus::DeprecatedStatus);
@@ -1864,47 +566,11 @@ QOpenGLVersionStatus QOpenGLFunctions_1_2_DeprecatedBackend::versionStatus()
 QOpenGLFunctions_1_3_DeprecatedBackend::QOpenGLFunctions_1_3_DeprecatedBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 1.3 deprecated functions
-    MultTransposeMatrixd = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glMultTransposeMatrixd"));
-    MultTransposeMatrixf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glMultTransposeMatrixf"));
-    LoadTransposeMatrixd = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glLoadTransposeMatrixd"));
-    LoadTransposeMatrixf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glLoadTransposeMatrixf"));
-    MultiTexCoord4sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLshort *)>(context->getProcAddress("glMultiTexCoord4sv"));
-    MultiTexCoord4s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLshort , GLshort , GLshort , GLshort )>(context->getProcAddress("glMultiTexCoord4s"));
-    MultiTexCoord4iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLint *)>(context->getProcAddress("glMultiTexCoord4iv"));
-    MultiTexCoord4i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLint , GLint )>(context->getProcAddress("glMultiTexCoord4i"));
-    MultiTexCoord4fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLfloat *)>(context->getProcAddress("glMultiTexCoord4fv"));
-    MultiTexCoord4f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat , GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glMultiTexCoord4f"));
-    MultiTexCoord4dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLdouble *)>(context->getProcAddress("glMultiTexCoord4dv"));
-    MultiTexCoord4d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLdouble , GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glMultiTexCoord4d"));
-    MultiTexCoord3sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLshort *)>(context->getProcAddress("glMultiTexCoord3sv"));
-    MultiTexCoord3s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLshort , GLshort , GLshort )>(context->getProcAddress("glMultiTexCoord3s"));
-    MultiTexCoord3iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLint *)>(context->getProcAddress("glMultiTexCoord3iv"));
-    MultiTexCoord3i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint , GLint )>(context->getProcAddress("glMultiTexCoord3i"));
-    MultiTexCoord3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLfloat *)>(context->getProcAddress("glMultiTexCoord3fv"));
-    MultiTexCoord3f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glMultiTexCoord3f"));
-    MultiTexCoord3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLdouble *)>(context->getProcAddress("glMultiTexCoord3dv"));
-    MultiTexCoord3d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glMultiTexCoord3d"));
-    MultiTexCoord2sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLshort *)>(context->getProcAddress("glMultiTexCoord2sv"));
-    MultiTexCoord2s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLshort , GLshort )>(context->getProcAddress("glMultiTexCoord2s"));
-    MultiTexCoord2iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLint *)>(context->getProcAddress("glMultiTexCoord2iv"));
-    MultiTexCoord2i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint , GLint )>(context->getProcAddress("glMultiTexCoord2i"));
-    MultiTexCoord2fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLfloat *)>(context->getProcAddress("glMultiTexCoord2fv"));
-    MultiTexCoord2f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat , GLfloat )>(context->getProcAddress("glMultiTexCoord2f"));
-    MultiTexCoord2dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLdouble *)>(context->getProcAddress("glMultiTexCoord2dv"));
-    MultiTexCoord2d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLdouble , GLdouble )>(context->getProcAddress("glMultiTexCoord2d"));
-    MultiTexCoord1sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLshort *)>(context->getProcAddress("glMultiTexCoord1sv"));
-    MultiTexCoord1s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLshort )>(context->getProcAddress("glMultiTexCoord1s"));
-    MultiTexCoord1iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLint *)>(context->getProcAddress("glMultiTexCoord1iv"));
-    MultiTexCoord1i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLint )>(context->getProcAddress("glMultiTexCoord1i"));
-    MultiTexCoord1fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLfloat *)>(context->getProcAddress("glMultiTexCoord1fv"));
-    MultiTexCoord1f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLfloat )>(context->getProcAddress("glMultiTexCoord1f"));
-    MultiTexCoord1dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLdouble *)>(context->getProcAddress("glMultiTexCoord1dv"));
-    MultiTexCoord1d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLdouble )>(context->getProcAddress("glMultiTexCoord1d"));
-    ClientActiveTexture = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum )>(context->getProcAddress("glClientActiveTexture"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_1_3_DeprecatedBackend, QT_OPENGL_1_3_DEPRECATED_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_1_3_DeprecatedBackend::versionStatus()
 {
     return QOpenGLVersionStatus(1, 3, QOpenGLVersionStatus::DeprecatedStatus);
@@ -1913,48 +579,11 @@ QOpenGLVersionStatus QOpenGLFunctions_1_3_DeprecatedBackend::versionStatus()
 QOpenGLFunctions_1_4_DeprecatedBackend::QOpenGLFunctions_1_4_DeprecatedBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 1.4 deprecated functions
-    WindowPos3sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(context->getProcAddress("glWindowPos3sv"));
-    WindowPos3s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort )>(context->getProcAddress("glWindowPos3s"));
-    WindowPos3iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(context->getProcAddress("glWindowPos3iv"));
-    WindowPos3i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint )>(context->getProcAddress("glWindowPos3i"));
-    WindowPos3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glWindowPos3fv"));
-    WindowPos3f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glWindowPos3f"));
-    WindowPos3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glWindowPos3dv"));
-    WindowPos3d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glWindowPos3d"));
-    WindowPos2sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(context->getProcAddress("glWindowPos2sv"));
-    WindowPos2s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort )>(context->getProcAddress("glWindowPos2s"));
-    WindowPos2iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(context->getProcAddress("glWindowPos2iv"));
-    WindowPos2i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint )>(context->getProcAddress("glWindowPos2i"));
-    WindowPos2fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glWindowPos2fv"));
-    WindowPos2f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat )>(context->getProcAddress("glWindowPos2f"));
-    WindowPos2dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glWindowPos2dv"));
-    WindowPos2d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble )>(context->getProcAddress("glWindowPos2d"));
-    SecondaryColorPointer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLenum , GLsizei , const GLvoid *)>(context->getProcAddress("glSecondaryColorPointer"));
-    SecondaryColor3usv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLushort *)>(context->getProcAddress("glSecondaryColor3usv"));
-    SecondaryColor3us = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLushort , GLushort , GLushort )>(context->getProcAddress("glSecondaryColor3us"));
-    SecondaryColor3uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLuint *)>(context->getProcAddress("glSecondaryColor3uiv"));
-    SecondaryColor3ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLuint )>(context->getProcAddress("glSecondaryColor3ui"));
-    SecondaryColor3ubv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLubyte *)>(context->getProcAddress("glSecondaryColor3ubv"));
-    SecondaryColor3ub = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLubyte , GLubyte , GLubyte )>(context->getProcAddress("glSecondaryColor3ub"));
-    SecondaryColor3sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLshort *)>(context->getProcAddress("glSecondaryColor3sv"));
-    SecondaryColor3s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLshort , GLshort , GLshort )>(context->getProcAddress("glSecondaryColor3s"));
-    SecondaryColor3iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLint *)>(context->getProcAddress("glSecondaryColor3iv"));
-    SecondaryColor3i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLint , GLint , GLint )>(context->getProcAddress("glSecondaryColor3i"));
-    SecondaryColor3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glSecondaryColor3fv"));
-    SecondaryColor3f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glSecondaryColor3f"));
-    SecondaryColor3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glSecondaryColor3dv"));
-    SecondaryColor3d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glSecondaryColor3d"));
-    SecondaryColor3bv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLbyte *)>(context->getProcAddress("glSecondaryColor3bv"));
-    SecondaryColor3b = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLbyte , GLbyte , GLbyte )>(context->getProcAddress("glSecondaryColor3b"));
-    FogCoordPointer = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , const GLvoid *)>(context->getProcAddress("glFogCoordPointer"));
-    FogCoorddv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLdouble *)>(context->getProcAddress("glFogCoorddv"));
-    FogCoordd = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLdouble )>(context->getProcAddress("glFogCoordd"));
-    FogCoordfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(const GLfloat *)>(context->getProcAddress("glFogCoordfv"));
-    FogCoordf = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLfloat )>(context->getProcAddress("glFogCoordf"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_1_4_DeprecatedBackend, QT_OPENGL_1_4_DEPRECATED_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_1_4_DeprecatedBackend::versionStatus()
 {
     return QOpenGLVersionStatus(1, 4, QOpenGLVersionStatus::DeprecatedStatus);
@@ -1963,46 +592,11 @@ QOpenGLVersionStatus QOpenGLFunctions_1_4_DeprecatedBackend::versionStatus()
 QOpenGLFunctions_2_0_DeprecatedBackend::QOpenGLFunctions_2_0_DeprecatedBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 2.0 deprecated functions
-    VertexAttrib4usv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLushort *)>(context->getProcAddress("glVertexAttrib4usv"));
-    VertexAttrib4uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLuint *)>(context->getProcAddress("glVertexAttrib4uiv"));
-    VertexAttrib4ubv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLubyte *)>(context->getProcAddress("glVertexAttrib4ubv"));
-    VertexAttrib4sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLshort *)>(context->getProcAddress("glVertexAttrib4sv"));
-    VertexAttrib4s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLshort , GLshort , GLshort , GLshort )>(context->getProcAddress("glVertexAttrib4s"));
-    VertexAttrib4iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLint *)>(context->getProcAddress("glVertexAttrib4iv"));
-    VertexAttrib4fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLfloat *)>(context->getProcAddress("glVertexAttrib4fv"));
-    VertexAttrib4f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLfloat , GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glVertexAttrib4f"));
-    VertexAttrib4dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLdouble *)>(context->getProcAddress("glVertexAttrib4dv"));
-    VertexAttrib4d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLdouble , GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glVertexAttrib4d"));
-    VertexAttrib4bv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLbyte *)>(context->getProcAddress("glVertexAttrib4bv"));
-    VertexAttrib4Nusv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLushort *)>(context->getProcAddress("glVertexAttrib4Nusv"));
-    VertexAttrib4Nuiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLuint *)>(context->getProcAddress("glVertexAttrib4Nuiv"));
-    VertexAttrib4Nubv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLubyte *)>(context->getProcAddress("glVertexAttrib4Nubv"));
-    VertexAttrib4Nub = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLubyte , GLubyte , GLubyte , GLubyte )>(context->getProcAddress("glVertexAttrib4Nub"));
-    VertexAttrib4Nsv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLshort *)>(context->getProcAddress("glVertexAttrib4Nsv"));
-    VertexAttrib4Niv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLint *)>(context->getProcAddress("glVertexAttrib4Niv"));
-    VertexAttrib4Nbv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLbyte *)>(context->getProcAddress("glVertexAttrib4Nbv"));
-    VertexAttrib3sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLshort *)>(context->getProcAddress("glVertexAttrib3sv"));
-    VertexAttrib3s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLshort , GLshort , GLshort )>(context->getProcAddress("glVertexAttrib3s"));
-    VertexAttrib3fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLfloat *)>(context->getProcAddress("glVertexAttrib3fv"));
-    VertexAttrib3f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLfloat , GLfloat , GLfloat )>(context->getProcAddress("glVertexAttrib3f"));
-    VertexAttrib3dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLdouble *)>(context->getProcAddress("glVertexAttrib3dv"));
-    VertexAttrib3d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLdouble , GLdouble , GLdouble )>(context->getProcAddress("glVertexAttrib3d"));
-    VertexAttrib2sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLshort *)>(context->getProcAddress("glVertexAttrib2sv"));
-    VertexAttrib2s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLshort , GLshort )>(context->getProcAddress("glVertexAttrib2s"));
-    VertexAttrib2fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLfloat *)>(context->getProcAddress("glVertexAttrib2fv"));
-    VertexAttrib2f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLfloat , GLfloat )>(context->getProcAddress("glVertexAttrib2f"));
-    VertexAttrib2dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLdouble *)>(context->getProcAddress("glVertexAttrib2dv"));
-    VertexAttrib2d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLdouble , GLdouble )>(context->getProcAddress("glVertexAttrib2d"));
-    VertexAttrib1sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLshort *)>(context->getProcAddress("glVertexAttrib1sv"));
-    VertexAttrib1s = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLshort )>(context->getProcAddress("glVertexAttrib1s"));
-    VertexAttrib1fv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLfloat *)>(context->getProcAddress("glVertexAttrib1fv"));
-    VertexAttrib1f = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLfloat )>(context->getProcAddress("glVertexAttrib1f"));
-    VertexAttrib1dv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLdouble *)>(context->getProcAddress("glVertexAttrib1dv"));
-    VertexAttrib1d = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLdouble )>(context->getProcAddress("glVertexAttrib1d"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_2_0_DeprecatedBackend, QT_OPENGL_2_0_DEPRECATED_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_2_0_DeprecatedBackend::versionStatus()
 {
     return QOpenGLVersionStatus(2, 0, QOpenGLVersionStatus::DeprecatedStatus);
@@ -2011,30 +605,11 @@ QOpenGLVersionStatus QOpenGLFunctions_2_0_DeprecatedBackend::versionStatus()
 QOpenGLFunctions_3_0_DeprecatedBackend::QOpenGLFunctions_3_0_DeprecatedBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 3.0 deprecated functions
-    VertexAttribI4usv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLushort *)>(context->getProcAddress("glVertexAttribI4usv"));
-    VertexAttribI4ubv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLubyte *)>(context->getProcAddress("glVertexAttribI4ubv"));
-    VertexAttribI4sv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLshort *)>(context->getProcAddress("glVertexAttribI4sv"));
-    VertexAttribI4bv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLbyte *)>(context->getProcAddress("glVertexAttribI4bv"));
-    VertexAttribI4uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLuint *)>(context->getProcAddress("glVertexAttribI4uiv"));
-    VertexAttribI3uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLuint *)>(context->getProcAddress("glVertexAttribI3uiv"));
-    VertexAttribI2uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLuint *)>(context->getProcAddress("glVertexAttribI2uiv"));
-    VertexAttribI1uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLuint *)>(context->getProcAddress("glVertexAttribI1uiv"));
-    VertexAttribI4iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLint *)>(context->getProcAddress("glVertexAttribI4iv"));
-    VertexAttribI3iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLint *)>(context->getProcAddress("glVertexAttribI3iv"));
-    VertexAttribI2iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLint *)>(context->getProcAddress("glVertexAttribI2iv"));
-    VertexAttribI1iv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , const GLint *)>(context->getProcAddress("glVertexAttribI1iv"));
-    VertexAttribI4ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLuint , GLuint , GLuint )>(context->getProcAddress("glVertexAttribI4ui"));
-    VertexAttribI3ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLuint , GLuint )>(context->getProcAddress("glVertexAttribI3ui"));
-    VertexAttribI2ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint , GLuint )>(context->getProcAddress("glVertexAttribI2ui"));
-    VertexAttribI1ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLuint )>(context->getProcAddress("glVertexAttribI1ui"));
-    VertexAttribI4i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint , GLint , GLint )>(context->getProcAddress("glVertexAttribI4i"));
-    VertexAttribI3i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint , GLint )>(context->getProcAddress("glVertexAttribI3i"));
-    VertexAttribI2i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint , GLint )>(context->getProcAddress("glVertexAttribI2i"));
-    VertexAttribI1i = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLuint , GLint )>(context->getProcAddress("glVertexAttribI1i"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_3_0_DeprecatedBackend, QT_OPENGL_3_0_DEPRECATED_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_3_0_DeprecatedBackend::versionStatus()
 {
     return QOpenGLVersionStatus(3, 0, QOpenGLVersionStatus::DeprecatedStatus);
@@ -2043,40 +618,11 @@ QOpenGLVersionStatus QOpenGLFunctions_3_0_DeprecatedBackend::versionStatus()
 QOpenGLFunctions_3_3_DeprecatedBackend::QOpenGLFunctions_3_3_DeprecatedBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 3.3 deprecated functions
-    SecondaryColorP3uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glSecondaryColorP3uiv"));
-    SecondaryColorP3ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glSecondaryColorP3ui"));
-    ColorP4uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glColorP4uiv"));
-    ColorP4ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glColorP4ui"));
-    ColorP3uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glColorP3uiv"));
-    ColorP3ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glColorP3ui"));
-    NormalP3uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glNormalP3uiv"));
-    NormalP3ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glNormalP3ui"));
-    MultiTexCoordP4uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLuint *)>(context->getProcAddress("glMultiTexCoordP4uiv"));
-    MultiTexCoordP4ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLuint )>(context->getProcAddress("glMultiTexCoordP4ui"));
-    MultiTexCoordP3uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLuint *)>(context->getProcAddress("glMultiTexCoordP3uiv"));
-    MultiTexCoordP3ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLuint )>(context->getProcAddress("glMultiTexCoordP3ui"));
-    MultiTexCoordP2uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLuint *)>(context->getProcAddress("glMultiTexCoordP2uiv"));
-    MultiTexCoordP2ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLuint )>(context->getProcAddress("glMultiTexCoordP2ui"));
-    MultiTexCoordP1uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , const GLuint *)>(context->getProcAddress("glMultiTexCoordP1uiv"));
-    MultiTexCoordP1ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLuint )>(context->getProcAddress("glMultiTexCoordP1ui"));
-    TexCoordP4uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glTexCoordP4uiv"));
-    TexCoordP4ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glTexCoordP4ui"));
-    TexCoordP3uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glTexCoordP3uiv"));
-    TexCoordP3ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glTexCoordP3ui"));
-    TexCoordP2uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glTexCoordP2uiv"));
-    TexCoordP2ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glTexCoordP2ui"));
-    TexCoordP1uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glTexCoordP1uiv"));
-    TexCoordP1ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glTexCoordP1ui"));
-    VertexP4uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glVertexP4uiv"));
-    VertexP4ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glVertexP4ui"));
-    VertexP3uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glVertexP3uiv"));
-    VertexP3ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glVertexP3ui"));
-    VertexP2uiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , const GLuint *)>(context->getProcAddress("glVertexP2uiv"));
-    VertexP2ui = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLuint )>(context->getProcAddress("glVertexP2ui"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_3_3_DeprecatedBackend, QT_OPENGL_3_3_DEPRECATED_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_3_3_DeprecatedBackend::versionStatus()
 {
     return QOpenGLVersionStatus(3, 3, QOpenGLVersionStatus::DeprecatedStatus);
@@ -2085,22 +631,11 @@ QOpenGLVersionStatus QOpenGLFunctions_3_3_DeprecatedBackend::versionStatus()
 QOpenGLFunctions_4_5_DeprecatedBackend::QOpenGLFunctions_4_5_DeprecatedBackend(QOpenGLContext *context)
     : QOpenGLVersionFunctionsBackend(context)
 {
-    // OpenGL 4.5 deprecated functions
-    GetnMinmax = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLboolean , GLenum , GLenum , GLsizei , void *)>(context->getProcAddress("glGetnMinmax"));
-    GetnHistogram = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLboolean , GLenum , GLenum , GLsizei , void *)>(context->getProcAddress("glGetnHistogram"));
-    GetnSeparableFilter = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLenum , GLsizei , void *, GLsizei , void *, void *)>(context->getProcAddress("glGetnSeparableFilter"));
-    GetnConvolutionFilter = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLenum , GLsizei , void *)>(context->getProcAddress("glGetnConvolutionFilter"));
-    GetnColorTable = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLenum , GLsizei , void *)>(context->getProcAddress("glGetnColorTable"));
-    GetnPolygonStipple = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLsizei , GLubyte *)>(context->getProcAddress("glGetnPolygonStipple"));
-    GetnPixelMapusv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLushort *)>(context->getProcAddress("glGetnPixelMapusv"));
-    GetnPixelMapuiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLuint *)>(context->getProcAddress("glGetnPixelMapuiv"));
-    GetnPixelMapfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLsizei , GLfloat *)>(context->getProcAddress("glGetnPixelMapfv"));
-    GetnMapiv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLsizei , GLint *)>(context->getProcAddress("glGetnMapiv"));
-    GetnMapfv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLsizei , GLfloat *)>(context->getProcAddress("glGetnMapfv"));
-    GetnMapdv = reinterpret_cast<void (QOPENGLF_APIENTRYP)(GLenum , GLenum , GLsizei , GLdouble *)>(context->getProcAddress("glGetnMapdv"));
-
+    init();
 }
 
+QT_OPENGL_IMPLEMENT(QOpenGLFunctions_4_5_DeprecatedBackend, QT_OPENGL_4_5_DEPRECATED_FUNCTIONS)
+
 QOpenGLVersionStatus QOpenGLFunctions_4_5_DeprecatedBackend::versionStatus()
 {
     return QOpenGLVersionStatus(4, 5, QOpenGLVersionStatus::DeprecatedStatus);