Expose GLES 3.0 and 3.1 functions

Using the approach we already do for some GLES 3.0 functions we can provide a cross-platform,
cross-GL-GLES wrapper for ES 3.0 and 3.1 functions too.

Applications only have to take extra care about the version requests (context version
and version directives in shader code), the rest of their code can stay the same across
desktop/mobile/embedded, even when ES 3 functions are used.

The new functions are placed to a new subclass which is placed between QOpenGLFunctions
and the internal QOpenGLExtensions. This is necessary because, unlike with QOpenGLFunctions,
there is no guarantee that these functions are always available in all configurations.

When running on desktop OpenGL, we resolve as usual. If the OpenGL version contains the
function in question, either in core or as an extension, it will all just work. This is
handy because it does not rely on 4.x extensions like GL_ARB_ESx_compatibility, and so
ES 3.0 functions will be functional on OpenGL 3.x systems too by just setting a 3.x version
number in the QSurfaceFormat.

We will no longer qFatal on broken systems where the driver returns a 3.0 or 3.1 context without
the corresponding functions present. Instead, we show a warning and gracefully fall back to
resolving as usual, via eglGetProcAddress or similar. For functions that are available in ES2 as
an extension this may just work fine.

Added also an example that runs identically both with OpenGL and OpenGL ES 3 and utilizes some
ES 3.0 features like instanced drawing.

[ChangeLog] Added QOpenGLExtraFunctions providing OpenGL ES 3.0 and 3.1 function wrappers in
a cross-platform manner.

Task-number: QTBUG-46161
Change-Id: I9f929eb61946c35c415b178c4d6ab2c1c958684e
Reviewed-by: Paul Olav Tvete <paul.tvete@theqtcompany.com>

1 files changed, 177 insertions, 76 deletions

diff --git a/src/gui/opengl/qopenglextensions_p.h b/src/gui/opengl/qopenglextensions_p.h
index e50ca1a94c..aa2a08242d 100644
--- a/src/gui/opengl/qopenglextensions_p.h
+++ b/src/gui/opengl/qopenglextensions_p.h
@@ -45,7 +45,7 @@
 // We mean it.
 //
 
-#include "qopenglfunctions.h"
+#include "qopenglextrafunctions.h"
 #include <QtCore/qlibrary.h>
 
 QT_BEGIN_NAMESPACE
@@ -57,23 +57,183 @@ class QOpenGLES3Helper
 public:
     QOpenGLES3Helper();
 
-    GLvoid* (QOPENGLF_APIENTRYP MapBufferRange)(GLenum target, qopengl_GLintptr offset, qopengl_GLsizeiptr length, GLbitfield access);
+    // GLES3
+    void (QOPENGLF_APIENTRYP ReadBuffer)(GLenum mode);
+    void (QOPENGLF_APIENTRYP DrawRangeElements)(GLenum mode, GLuint start, GLuint end, GLsizei count, GLenum type, const void *indices);
+    void (QOPENGLF_APIENTRYP TexImage3D)(GLenum target, GLint level, GLint internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const void *pixels);
+    void (QOPENGLF_APIENTRYP TexSubImage3D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const void *pixels);
+    void (QOPENGLF_APIENTRYP CopyTexSubImage3D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLint x, GLint y, GLsizei width, GLsizei height);
+    void (QOPENGLF_APIENTRYP CompressedTexImage3D)(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLsizei imageSize, const void *data);
+    void (QOPENGLF_APIENTRYP CompressedTexSubImage3D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize, const void *data);
+    void (QOPENGLF_APIENTRYP GenQueries)(GLsizei n, GLuint *ids);
+    void (QOPENGLF_APIENTRYP DeleteQueries)(GLsizei n, const GLuint *ids);
+    GLboolean (QOPENGLF_APIENTRYP IsQuery)(GLuint id);
+    void (QOPENGLF_APIENTRYP BeginQuery)(GLenum target, GLuint id);
+    void (QOPENGLF_APIENTRYP EndQuery)(GLenum target);
+    void (QOPENGLF_APIENTRYP GetQueryiv)(GLenum target, GLenum pname, GLint *params);
+    void (QOPENGLF_APIENTRYP GetQueryObjectuiv)(GLuint id, GLenum pname, GLuint *params);
     GLboolean (QOPENGLF_APIENTRYP UnmapBuffer)(GLenum target);
+    void (QOPENGLF_APIENTRYP GetBufferPointerv)(GLenum target, GLenum pname, void **params);
+    void (QOPENGLF_APIENTRYP DrawBuffers)(GLsizei n, const GLenum *bufs);
+    void (QOPENGLF_APIENTRYP UniformMatrix2x3fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+    void (QOPENGLF_APIENTRYP UniformMatrix3x2fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+    void (QOPENGLF_APIENTRYP UniformMatrix2x4fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+    void (QOPENGLF_APIENTRYP UniformMatrix4x2fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+    void (QOPENGLF_APIENTRYP UniformMatrix3x4fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+    void (QOPENGLF_APIENTRYP UniformMatrix4x3fv)(GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
     void (QOPENGLF_APIENTRYP BlitFramebuffer)(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter);
-    void (QOPENGLF_APIENTRYP RenderbufferStorageMultisample)(GLenum target, GLsizei samples, GLenum internalFormat, GLsizei width, GLsizei height);
-
-    void (QOPENGLF_APIENTRYP GenVertexArrays)(GLsizei n, GLuint *arrays);
-    void (QOPENGLF_APIENTRYP DeleteVertexArrays)(GLsizei n, const GLuint *arrays);
+    void (QOPENGLF_APIENTRYP RenderbufferStorageMultisample)(GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height);
+    void (QOPENGLF_APIENTRYP FramebufferTextureLayer)(GLenum target, GLenum attachment, GLuint texture, GLint level, GLint layer);
+    void *(QOPENGLF_APIENTRYP MapBufferRange)(GLenum target, GLintptr offset, GLsizeiptr length, GLbitfield access);
+    void (QOPENGLF_APIENTRYP FlushMappedBufferRange)(GLenum target, GLintptr offset, GLsizeiptr length);
     void (QOPENGLF_APIENTRYP BindVertexArray)(GLuint array);
+    void (QOPENGLF_APIENTRYP DeleteVertexArrays)(GLsizei n, const GLuint *arrays);
+    void (QOPENGLF_APIENTRYP GenVertexArrays)(GLsizei n, GLuint *arrays);
     GLboolean (QOPENGLF_APIENTRYP IsVertexArray)(GLuint array);
-
-    void (QOPENGLF_APIENTRYP TexImage3D)(GLenum target, GLint level, GLint internalFormat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLenum format, GLenum type, const GLvoid *pixels);
-    void (QOPENGLF_APIENTRYP TexSubImage3D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const GLvoid *pixels);
-    void (QOPENGLF_APIENTRYP CompressedTexImage3D)(GLenum target, GLint level, GLenum internalFormat, GLsizei width, GLsizei height, GLsizei depth, GLint border, GLsizei imageSize, const GLvoid *data);
-    void (QOPENGLF_APIENTRYP CompressedTexSubImage3D)(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLint zoffset, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLsizei imageSize, const GLvoid *data);
-
-    void (QOPENGLF_APIENTRYP TexStorage3D)(GLenum target, GLsizei levels, GLenum internalFormat, GLsizei width, GLsizei height, GLsizei depth);
-    void (QOPENGLF_APIENTRYP TexStorage2D)(GLenum target, GLsizei levels, GLenum internalFormat, GLsizei width, GLsizei height);
+    void (QOPENGLF_APIENTRYP GetIntegeri_v)(GLenum target, GLuint index, GLint *data);
+    void (QOPENGLF_APIENTRYP BeginTransformFeedback)(GLenum primitiveMode);
+    void (QOPENGLF_APIENTRYP EndTransformFeedback)(void);
+    void (QOPENGLF_APIENTRYP BindBufferRange)(GLenum target, GLuint index, GLuint buffer, GLintptr offset, GLsizeiptr size);
+    void (QOPENGLF_APIENTRYP BindBufferBase)(GLenum target, GLuint index, GLuint buffer);
+    void (QOPENGLF_APIENTRYP TransformFeedbackVaryings)(GLuint program, GLsizei count, const GLchar *const*varyings, GLenum bufferMode);
+    void (QOPENGLF_APIENTRYP GetTransformFeedbackVarying)(GLuint program, GLuint index, GLsizei bufSize, GLsizei *length, GLsizei *size, GLenum *type, GLchar *name);
+    void (QOPENGLF_APIENTRYP VertexAttribIPointer)(GLuint index, GLint size, GLenum type, GLsizei stride, const void *pointer);
+    void (QOPENGLF_APIENTRYP GetVertexAttribIiv)(GLuint index, GLenum pname, GLint *params);
+    void (QOPENGLF_APIENTRYP GetVertexAttribIuiv)(GLuint index, GLenum pname, GLuint *params);
+    void (QOPENGLF_APIENTRYP VertexAttribI4i)(GLuint index, GLint x, GLint y, GLint z, GLint w);
+    void (QOPENGLF_APIENTRYP VertexAttribI4ui)(GLuint index, GLuint x, GLuint y, GLuint z, GLuint w);
+    void (QOPENGLF_APIENTRYP VertexAttribI4iv)(GLuint index, const GLint *v);
+    void (QOPENGLF_APIENTRYP VertexAttribI4uiv)(GLuint index, const GLuint *v);
+    void (QOPENGLF_APIENTRYP GetUniformuiv)(GLuint program, GLint location, GLuint *params);
+    GLint (QOPENGLF_APIENTRYP GetFragDataLocation)(GLuint program, const GLchar *name);
+    void (QOPENGLF_APIENTRYP Uniform1ui)(GLint location, GLuint v0);
+    void (QOPENGLF_APIENTRYP Uniform2ui)(GLint location, GLuint v0, GLuint v1);
+    void (QOPENGLF_APIENTRYP Uniform3ui)(GLint location, GLuint v0, GLuint v1, GLuint v2);
+    void (QOPENGLF_APIENTRYP Uniform4ui)(GLint location, GLuint v0, GLuint v1, GLuint v2, GLuint v3);
+    void (QOPENGLF_APIENTRYP Uniform1uiv)(GLint location, GLsizei count, const GLuint *value);
+    void (QOPENGLF_APIENTRYP Uniform2uiv)(GLint location, GLsizei count, const GLuint *value);
+    void (QOPENGLF_APIENTRYP Uniform3uiv)(GLint location, GLsizei count, const GLuint *value);
+    void (QOPENGLF_APIENTRYP Uniform4uiv)(GLint location, GLsizei count, const GLuint *value);
+    void (QOPENGLF_APIENTRYP ClearBufferiv)(GLenum buffer, GLint drawbuffer, const GLint *value);
+    void (QOPENGLF_APIENTRYP ClearBufferuiv)(GLenum buffer, GLint drawbuffer, const GLuint *value);
+    void (QOPENGLF_APIENTRYP ClearBufferfv)(GLenum buffer, GLint drawbuffer, const GLfloat *value);
+    void (QOPENGLF_APIENTRYP ClearBufferfi)(GLenum buffer, GLint drawbuffer, GLfloat depth, GLint stencil);
+    const GLubyte *(QOPENGLF_APIENTRYP GetStringi)(GLenum name, GLuint index);
+    void (QOPENGLF_APIENTRYP CopyBufferSubData)(GLenum readTarget, GLenum writeTarget, GLintptr readOffset, GLintptr writeOffset, GLsizeiptr size);
+    void (QOPENGLF_APIENTRYP GetUniformIndices)(GLuint program, GLsizei uniformCount, const GLchar *const*uniformNames, GLuint *uniformIndices);
+    void (QOPENGLF_APIENTRYP GetActiveUniformsiv)(GLuint program, GLsizei uniformCount, const GLuint *uniformIndices, GLenum pname, GLint *params);
+    GLuint (QOPENGLF_APIENTRYP GetUniformBlockIndex)(GLuint program, const GLchar *uniformBlockName);
+    void (QOPENGLF_APIENTRYP GetActiveUniformBlockiv)(GLuint program, GLuint uniformBlockIndex, GLenum pname, GLint *params);
+    void (QOPENGLF_APIENTRYP GetActiveUniformBlockName)(GLuint program, GLuint uniformBlockIndex, GLsizei bufSize, GLsizei *length, GLchar *uniformBlockName);
+    void (QOPENGLF_APIENTRYP UniformBlockBinding)(GLuint program, GLuint uniformBlockIndex, GLuint uniformBlockBinding);
+    void (QOPENGLF_APIENTRYP DrawArraysInstanced)(GLenum mode, GLint first, GLsizei count, GLsizei instancecount);
+    void (QOPENGLF_APIENTRYP DrawElementsInstanced)(GLenum mode, GLsizei count, GLenum type, const void *indices, GLsizei instancecount);
+    GLsync (QOPENGLF_APIENTRYP FenceSync)(GLenum condition, GLbitfield flags);
+    GLboolean (QOPENGLF_APIENTRYP IsSync)(GLsync sync);
+    void (QOPENGLF_APIENTRYP DeleteSync)(GLsync sync);
+    GLenum (QOPENGLF_APIENTRYP ClientWaitSync)(GLsync sync, GLbitfield flags, GLuint64 timeout);
+    void (QOPENGLF_APIENTRYP WaitSync)(GLsync sync, GLbitfield flags, GLuint64 timeout);
+    void (QOPENGLF_APIENTRYP GetInteger64v)(GLenum pname, GLint64 *data);
+    void (QOPENGLF_APIENTRYP GetSynciv)(GLsync sync, GLenum pname, GLsizei bufSize, GLsizei *length, GLint *values);
+    void (QOPENGLF_APIENTRYP GetInteger64i_v)(GLenum target, GLuint index, GLint64 *data);
+    void (QOPENGLF_APIENTRYP GetBufferParameteri64v)(GLenum target, GLenum pname, GLint64 *params);
+    void (QOPENGLF_APIENTRYP GenSamplers)(GLsizei count, GLuint *samplers);
+    void (QOPENGLF_APIENTRYP DeleteSamplers)(GLsizei count, const GLuint *samplers);
+    GLboolean (QOPENGLF_APIENTRYP IsSampler)(GLuint sampler);
+    void (QOPENGLF_APIENTRYP BindSampler)(GLuint unit, GLuint sampler);
+    void (QOPENGLF_APIENTRYP SamplerParameteri)(GLuint sampler, GLenum pname, GLint param);
+    void (QOPENGLF_APIENTRYP SamplerParameteriv)(GLuint sampler, GLenum pname, const GLint *param);
+    void (QOPENGLF_APIENTRYP SamplerParameterf)(GLuint sampler, GLenum pname, GLfloat param);
+    void (QOPENGLF_APIENTRYP SamplerParameterfv)(GLuint sampler, GLenum pname, const GLfloat *param);
+    void (QOPENGLF_APIENTRYP GetSamplerParameteriv)(GLuint sampler, GLenum pname, GLint *params);
+    void (QOPENGLF_APIENTRYP GetSamplerParameterfv)(GLuint sampler, GLenum pname, GLfloat *params);
+    void (QOPENGLF_APIENTRYP VertexAttribDivisor)(GLuint index, GLuint divisor);
+    void (QOPENGLF_APIENTRYP BindTransformFeedback)(GLenum target, GLuint id);
+    void (QOPENGLF_APIENTRYP DeleteTransformFeedbacks)(GLsizei n, const GLuint *ids);
+    void (QOPENGLF_APIENTRYP GenTransformFeedbacks)(GLsizei n, GLuint *ids);
+    GLboolean (QOPENGLF_APIENTRYP IsTransformFeedback)(GLuint id);
+    void (QOPENGLF_APIENTRYP PauseTransformFeedback)(void);
+    void (QOPENGLF_APIENTRYP ResumeTransformFeedback)(void);
+    void (QOPENGLF_APIENTRYP GetProgramBinary)(GLuint program, GLsizei bufSize, GLsizei *length, GLenum *binaryFormat, void *binary);
+    void (QOPENGLF_APIENTRYP ProgramBinary)(GLuint program, GLenum binaryFormat, const void *binary, GLsizei length);
+    void (QOPENGLF_APIENTRYP ProgramParameteri)(GLuint program, GLenum pname, GLint value);
+    void (QOPENGLF_APIENTRYP InvalidateFramebuffer)(GLenum target, GLsizei numAttachments, const GLenum *attachments);
+    void (QOPENGLF_APIENTRYP InvalidateSubFramebuffer)(GLenum target, GLsizei numAttachments, const GLenum *attachments, GLint x, GLint y, GLsizei width, GLsizei height);
+    void (QOPENGLF_APIENTRYP TexStorage2D)(GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height);
+    void (QOPENGLF_APIENTRYP TexStorage3D)(GLenum target, GLsizei levels, GLenum internalformat, GLsizei width, GLsizei height, GLsizei depth);
+    void (QOPENGLF_APIENTRYP GetInternalformativ)(GLenum target, GLenum internalformat, GLenum pname, GLsizei bufSize, GLint *params);
+
+    // GLES 3.1
+    void (QOPENGLF_APIENTRYP DispatchCompute)(GLuint num_groups_x, GLuint num_groups_y, GLuint num_groups_z);
+    void (QOPENGLF_APIENTRYP DispatchComputeIndirect)(GLintptr indirect);
+    void (QOPENGLF_APIENTRYP DrawArraysIndirect)(GLenum mode, const void *indirect);
+    void (QOPENGLF_APIENTRYP DrawElementsIndirect)(GLenum mode, GLenum type, const void *indirect);
+    void (QOPENGLF_APIENTRYP FramebufferParameteri)(GLenum target, GLenum pname, GLint param);
+    void (QOPENGLF_APIENTRYP GetFramebufferParameteriv)(GLenum target, GLenum pname, GLint *params);
+    void (QOPENGLF_APIENTRYP GetProgramInterfaceiv)(GLuint program, GLenum programInterface, GLenum pname, GLint *params);
+    GLuint (QOPENGLF_APIENTRYP GetProgramResourceIndex)(GLuint program, GLenum programInterface, const GLchar *name);
+    void (QOPENGLF_APIENTRYP GetProgramResourceName)(GLuint program, GLenum programInterface, GLuint index, GLsizei bufSize, GLsizei *length, GLchar *name);
+    void (QOPENGLF_APIENTRYP GetProgramResourceiv)(GLuint program, GLenum programInterface, GLuint index, GLsizei propCount, const GLenum *props, GLsizei bufSize, GLsizei *length, GLint *params);
+    GLint (QOPENGLF_APIENTRYP GetProgramResourceLocation)(GLuint program, GLenum programInterface, const GLchar *name);
+    void (QOPENGLF_APIENTRYP UseProgramStages)(GLuint pipeline, GLbitfield stages, GLuint program);
+    void (QOPENGLF_APIENTRYP ActiveShaderProgram)(GLuint pipeline, GLuint program);
+    GLuint (QOPENGLF_APIENTRYP CreateShaderProgramv)(GLenum type, GLsizei count, const GLchar *const*strings);
+    void (QOPENGLF_APIENTRYP BindProgramPipeline)(GLuint pipeline);
+    void (QOPENGLF_APIENTRYP DeleteProgramPipelines)(GLsizei n, const GLuint *pipelines);
+    void (QOPENGLF_APIENTRYP GenProgramPipelines)(GLsizei n, GLuint *pipelines);
+    GLboolean (QOPENGLF_APIENTRYP IsProgramPipeline)(GLuint pipeline);
+    void (QOPENGLF_APIENTRYP GetProgramPipelineiv)(GLuint pipeline, GLenum pname, GLint *params);
+    void (QOPENGLF_APIENTRYP ProgramUniform1i)(GLuint program, GLint location, GLint v0);
+    void (QOPENGLF_APIENTRYP ProgramUniform2i)(GLuint program, GLint location, GLint v0, GLint v1);
+    void (QOPENGLF_APIENTRYP ProgramUniform3i)(GLuint program, GLint location, GLint v0, GLint v1, GLint v2);
+    void (QOPENGLF_APIENTRYP ProgramUniform4i)(GLuint program, GLint location, GLint v0, GLint v1, GLint v2, GLint v3);
+    void (QOPENGLF_APIENTRYP ProgramUniform1ui)(GLuint program, GLint location, GLuint v0);
+    void (QOPENGLF_APIENTRYP ProgramUniform2ui)(GLuint program, GLint location, GLuint v0, GLuint v1);
+    void (QOPENGLF_APIENTRYP ProgramUniform3ui)(GLuint program, GLint location, GLuint v0, GLuint v1, GLuint v2);
+    void (QOPENGLF_APIENTRYP ProgramUniform4ui)(GLuint program, GLint location, GLuint v0, GLuint v1, GLuint v2, GLuint v3);
+    void (QOPENGLF_APIENTRYP ProgramUniform1f)(GLuint program, GLint location, GLfloat v0);
+    void (QOPENGLF_APIENTRYP ProgramUniform2f)(GLuint program, GLint location, GLfloat v0, GLfloat v1);
+    void (QOPENGLF_APIENTRYP ProgramUniform3f)(GLuint program, GLint location, GLfloat v0, GLfloat v1, GLfloat v2);
+    void (QOPENGLF_APIENTRYP ProgramUniform4f)(GLuint program, GLint location, GLfloat v0, GLfloat v1, GLfloat v2, GLfloat v3);
+    void (QOPENGLF_APIENTRYP ProgramUniform1iv)(GLuint program, GLint location, GLsizei count, const GLint *value);
+    void (QOPENGLF_APIENTRYP ProgramUniform2iv)(GLuint program, GLint location, GLsizei count, const GLint *value);
+    void (QOPENGLF_APIENTRYP ProgramUniform3iv)(GLuint program, GLint location, GLsizei count, const GLint *value);
+    void (QOPENGLF_APIENTRYP ProgramUniform4iv)(GLuint program, GLint location, GLsizei count, const GLint *value);
+    void (QOPENGLF_APIENTRYP ProgramUniform1uiv)(GLuint program, GLint location, GLsizei count, const GLuint *value);
+    void (QOPENGLF_APIENTRYP ProgramUniform2uiv)(GLuint program, GLint location, GLsizei count, const GLuint *value);
+    void (QOPENGLF_APIENTRYP ProgramUniform3uiv)(GLuint program, GLint location, GLsizei count, const GLuint *value);
+    void (QOPENGLF_APIENTRYP ProgramUniform4uiv)(GLuint program, GLint location, GLsizei count, const GLuint *value);
+    void (QOPENGLF_APIENTRYP ProgramUniform1fv)(GLuint program, GLint location, GLsizei count, const GLfloat *value);
+    void (QOPENGLF_APIENTRYP ProgramUniform2fv)(GLuint program, GLint location, GLsizei count, const GLfloat *value);
+    void (QOPENGLF_APIENTRYP ProgramUniform3fv)(GLuint program, GLint location, GLsizei count, const GLfloat *value);
+    void (QOPENGLF_APIENTRYP ProgramUniform4fv)(GLuint program, GLint location, GLsizei count, const GLfloat *value);
+    void (QOPENGLF_APIENTRYP ProgramUniformMatrix2fv)(GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+    void (QOPENGLF_APIENTRYP ProgramUniformMatrix3fv)(GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+    void (QOPENGLF_APIENTRYP ProgramUniformMatrix4fv)(GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+    void (QOPENGLF_APIENTRYP ProgramUniformMatrix2x3fv)(GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+    void (QOPENGLF_APIENTRYP ProgramUniformMatrix3x2fv)(GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+    void (QOPENGLF_APIENTRYP ProgramUniformMatrix2x4fv)(GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+    void (QOPENGLF_APIENTRYP ProgramUniformMatrix4x2fv)(GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+    void (QOPENGLF_APIENTRYP ProgramUniformMatrix3x4fv)(GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+    void (QOPENGLF_APIENTRYP ProgramUniformMatrix4x3fv)(GLuint program, GLint location, GLsizei count, GLboolean transpose, const GLfloat *value);
+    void (QOPENGLF_APIENTRYP ValidateProgramPipeline)(GLuint pipeline);
+    void (QOPENGLF_APIENTRYP GetProgramPipelineInfoLog)(GLuint pipeline, GLsizei bufSize, GLsizei *length, GLchar *infoLog);
+    void (QOPENGLF_APIENTRYP BindImageTexture)(GLuint unit, GLuint texture, GLint level, GLboolean layered, GLint layer, GLenum access, GLenum format);
+    void (QOPENGLF_APIENTRYP GetBooleani_v)(GLenum target, GLuint index, GLboolean *data);
+    void (QOPENGLF_APIENTRYP MemoryBarrierFunc)(GLbitfield barriers);
+    void (QOPENGLF_APIENTRYP MemoryBarrierByRegion)(GLbitfield barriers);
+    void (QOPENGLF_APIENTRYP TexStorage2DMultisample)(GLenum target, GLsizei samples, GLenum internalformat, GLsizei width, GLsizei height, GLboolean fixedsamplelocations);
+    void (QOPENGLF_APIENTRYP GetMultisamplefv)(GLenum pname, GLuint index, GLfloat *val);
+    void (QOPENGLF_APIENTRYP SampleMaski)(GLuint maskNumber, GLbitfield mask);
+    void (QOPENGLF_APIENTRYP GetTexLevelParameteriv)(GLenum target, GLint level, GLenum pname, GLint *params);
+    void (QOPENGLF_APIENTRYP GetTexLevelParameterfv)(GLenum target, GLint level, GLenum pname, GLfloat *params);
+    void (QOPENGLF_APIENTRYP BindVertexBuffer)(GLuint bindingindex, GLuint buffer, GLintptr offset, GLsizei stride);
+    void (QOPENGLF_APIENTRYP VertexAttribFormat)(GLuint attribindex, GLint size, GLenum type, GLboolean normalized, GLuint relativeoffset);
+    void (QOPENGLF_APIENTRYP VertexAttribIFormat)(GLuint attribindex, GLint size, GLenum type, GLuint relativeoffset);
+    void (QOPENGLF_APIENTRYP VertexAttribBinding)(GLuint attribindex, GLuint bindingindex);
+    void (QOPENGLF_APIENTRYP VertexBindingDivisor)(GLuint bindingindex, GLuint divisor);
+
+    QPair<int, int> supportedVersion() const { return m_supportedVersion; }
 
 private:
     bool init();
@@ -81,9 +241,10 @@ private:
 #ifndef QT_NO_LIBRARY
     QLibrary m_gl;
 #endif
+    QPair<int, int> m_supportedVersion;
 };
 
-class Q_GUI_EXPORT QOpenGLExtensions : public QOpenGLFunctions
+class Q_GUI_EXPORT QOpenGLExtensions : public QOpenGLExtraFunctions
 {
     Q_DECLARE_PRIVATE(QOpenGLExtensions)
 public:
@@ -123,19 +284,7 @@ public:
     bool hasOpenGLExtension(QOpenGLExtensions::OpenGLExtension extension) const;
 
     GLvoid *glMapBuffer(GLenum target, GLenum access);
-    GLvoid *glMapBufferRange(GLenum target, qopengl_GLintptr offset, qopengl_GLsizeiptr length, GLbitfield access);
-    GLboolean glUnmapBuffer(GLenum target);
-
-    void glBlitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
-                           GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
-                           GLbitfield mask, GLenum filter);
-
-    void glRenderbufferStorageMultisample(GLenum target, GLsizei samples,
-                                          GLenum internalFormat,
-                                          GLsizei width, GLsizei height);
-
     void glGetBufferSubData(GLenum target, qopengl_GLintptr offset, qopengl_GLsizeiptr size, GLvoid *data);
-
     void glDiscardFramebufferEXT (GLenum target, GLsizei numAttachments, const GLenum *attachments);
 
     QOpenGLES3Helper *gles3Helper();
@@ -148,21 +297,12 @@ private:
 
 Q_DECLARE_OPERATORS_FOR_FLAGS(QOpenGLExtensions::OpenGLExtensions)
 
-class QOpenGLExtensionsPrivate : public QOpenGLFunctionsPrivate
+class QOpenGLExtensionsPrivate : public QOpenGLExtraFunctionsPrivate
 {
 public:
     explicit QOpenGLExtensionsPrivate(QOpenGLContext *ctx);
 
     GLvoid* (QOPENGLF_APIENTRYP MapBuffer)(GLenum target, GLenum access);
-    GLvoid* (QOPENGLF_APIENTRYP MapBufferRange)(GLenum target, qopengl_GLintptr offset,
-                                                qopengl_GLsizeiptr length, GLbitfield access);
-    GLboolean (QOPENGLF_APIENTRYP UnmapBuffer)(GLenum target);
-    void (QOPENGLF_APIENTRYP BlitFramebuffer)(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
-                           GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
-                           GLbitfield mask, GLenum filter);
-    void (QOPENGLF_APIENTRYP RenderbufferStorageMultisample)(GLenum target, GLsizei samples,
-                                          GLenum internalFormat,
-                                          GLsizei width, GLsizei height);
     void (QOPENGLF_APIENTRYP GetBufferSubData)(GLenum target, qopengl_GLintptr offset, qopengl_GLsizeiptr size, GLvoid *data);
     void (QOPENGLF_APIENTRYP DiscardFramebuffer)(GLenum target, GLsizei numAttachments, const GLenum *attachments);
 
@@ -179,45 +319,6 @@ inline GLvoid *QOpenGLExtensions::glMapBuffer(GLenum target, GLenum access)
     return result;
 }
 
-inline GLvoid *QOpenGLExtensions::glMapBufferRange(GLenum target, qopengl_GLintptr offset,
-                                                   qopengl_GLsizeiptr length, GLbitfield access)
-{
-    Q_D(QOpenGLExtensions);
-    Q_ASSERT(QOpenGLExtensions::isInitialized(d));
-    GLvoid *result = d->MapBufferRange(target, offset, length, access);
-    Q_OPENGL_FUNCTIONS_DEBUG
-    return result;
-}
-
-inline GLboolean QOpenGLExtensions::glUnmapBuffer(GLenum target)
-{
-    Q_D(QOpenGLExtensions);
-    Q_ASSERT(QOpenGLExtensions::isInitialized(d));
-    GLboolean result = d->UnmapBuffer(target);
-    Q_OPENGL_FUNCTIONS_DEBUG
-    return result;
-}
-
-inline void QOpenGLExtensions::glBlitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1,
-                       GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1,
-                       GLbitfield mask, GLenum filter)
-{
-    Q_D(QOpenGLExtensions);
-    Q_ASSERT(QOpenGLExtensions::isInitialized(d));
-    d->BlitFramebuffer(srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1, mask, filter);
-    Q_OPENGL_FUNCTIONS_DEBUG
-}
-
-inline void QOpenGLExtensions::glRenderbufferStorageMultisample(GLenum target, GLsizei samples,
-                                      GLenum internalFormat,
-                                      GLsizei width, GLsizei height)
-{
-    Q_D(QOpenGLExtensions);
-    Q_ASSERT(QOpenGLExtensions::isInitialized(d));
-    d->RenderbufferStorageMultisample(target, samples, internalFormat, width, height);
-    Q_OPENGL_FUNCTIONS_DEBUG
-}
-
 inline void QOpenGLExtensions::glGetBufferSubData(GLenum target, qopengl_GLintptr offset, qopengl_GLsizeiptr size, GLvoid *data)
 {
     Q_D(QOpenGLExtensions);