diff options
Diffstat (limited to 'src/gui/opengl/qopenglfunctions.cpp')
-rw-r--r-- | src/gui/opengl/qopenglfunctions.cpp | 99 |
1 files changed, 72 insertions, 27 deletions
diff --git a/src/gui/opengl/qopenglfunctions.cpp b/src/gui/opengl/qopenglfunctions.cpp index 44b56699df..d561e65d8e 100644 --- a/src/gui/opengl/qopenglfunctions.cpp +++ b/src/gui/opengl/qopenglfunctions.cpp @@ -3187,65 +3187,105 @@ static void QOPENGLF_APIENTRY qopenglfResolveVertexAttribPointer(GLuint indx, GL #endif // !QT_OPENGL_ES_2 +// Functions part of the OpenGL ES 3.0+ standard need special handling. These, +// just like the 2.0 functions, are not guaranteed to be resolvable via +// eglGetProcAddress or similar. Calling them directly is, unlike the 2.0 +// functions, not feasible because one may build the binaries on a GLES3-capable +// system and then deploy on a GLES2-only system that does not have these +// symbols. Until ES3 gets universally available, they have to be dlsym'ed. + +Q_GLOBAL_STATIC(QOpenGLES3Helper, qgles3Helper) + +QOpenGLES3Helper::QOpenGLES3Helper() +{ +#ifdef Q_OS_WIN +#ifdef QT_DEBUG + m_gl.setFileName(QStringLiteral("libGLESv2")); +#else + m_gl.setFileName(QStringLiteral("libGLESv2d")); +#endif +#else + m_gl.setFileName(QStringLiteral("GLESv2")); +#endif + if (m_gl.load()) { + MapBufferRange = (GLvoid* (QOPENGLF_APIENTRYP)(GLenum, qopengl_GLintptr, qopengl_GLsizeiptr, GLbitfield)) m_gl.resolve("glMapBufferRange"); + UnmapBuffer = (GLboolean (QOPENGLF_APIENTRYP)(GLenum)) m_gl.resolve("glUnmapBuffer"); + BlitFramebuffer = (void (QOPENGLF_APIENTRYP)(GLint, GLint, GLint, GLint, GLint, GLint, GLint, GLint, GLbitfield, GLenum)) m_gl.resolve("glBlitFramebuffer"); + RenderbufferStorageMultisample = (void (QOPENGLF_APIENTRYP)(GLenum, GLsizei, GLenum, GLsizei, GLsizei)) m_gl.resolve("glRenderbufferStorageMultisample"); + + GenVertexArrays = (void (QOPENGLF_APIENTRYP)(GLsizei, GLuint *)) m_gl.resolve("glGenVertexArrays"); + DeleteVertexArrays = (void (QOPENGLF_APIENTRYP)(GLsizei, const GLuint *)) m_gl.resolve("glDeleteVertexArrays"); + BindVertexArray = (void (QOPENGLF_APIENTRYP)(GLuint)) m_gl.resolve("glBindVertexArray"); + IsVertexArray = (GLboolean (QOPENGLF_APIENTRYP)(GLuint)) m_gl.resolve("glIsVertexArray"); + + TexImage3D = (void (QOPENGLF_APIENTRYP)(GLenum, GLint, GLint, GLsizei, GLsizei, GLsizei, GLint, GLenum, GLenum, const GLvoid *)) m_gl.resolve("glTexImage3D"); + TexSubImage3D = (void (QOPENGLF_APIENTRYP)(GLenum, GLint, GLint, GLint, GLint, GLsizei, GLsizei, GLsizei, GLenum, GLenum, const GLvoid *)) m_gl.resolve("glTexSubImage3D"); + CompressedTexImage3D = (void (QOPENGLF_APIENTRYP)(GLenum, GLint, GLenum, GLsizei, GLsizei, GLsizei, GLint, GLsizei, const GLvoid *)) m_gl.resolve("glCompressedTexImage3D"); + CompressedTexSubImage3D = (void (QOPENGLF_APIENTRYP)(GLenum, GLint, GLint, GLint, GLint, GLsizei, GLsizei, GLsizei, GLenum, GLsizei, const GLvoid *)) m_gl.resolve("glCompressedTexSubImage3D"); + + if (!MapBufferRange || !GenVertexArrays || !TexImage3D) + qFatal("OpenGL ES 3.0 entry points not found"); + } else { + qFatal("Failed to load libGLESv2"); + } +} + +static inline bool isES3() +{ + QOpenGLContext *ctx = QOpenGLContext::currentContext(); + return ctx->isOpenGLES() && ctx->format().majorVersion() >= 3; +} + static GLvoid *QOPENGLF_APIENTRY qopenglfResolveMapBuffer(GLenum target, GLenum access) { -#ifdef QT_OPENGL_ES_3 // It is possible that GL_OES_map_buffer is present, but then having to // differentiate between glUnmapBufferOES and glUnmapBuffer causes extra // headache. QOpenGLBuffer::map() will handle this automatically, while direct // calls are better off with migrating to the standard glMapBufferRange. - if (QOpenGLContext::currentContext()->format().majorVersion() >= 3) { + if (isES3()) { qWarning("QOpenGLFunctions: glMapBuffer is not available in OpenGL ES 3.0 and up. Use glMapBufferRange instead."); return 0; - } else -#endif - RESOLVE_FUNC(GLvoid *, ResolveOES, MapBuffer)(target, access); + } else { + RESOLVE_FUNC(GLvoid *, ResolveOES, MapBuffer)(target, access); + } } static GLvoid *QOPENGLF_APIENTRY qopenglfResolveMapBufferRange(GLenum target, qopengl_GLintptr offset, qopengl_GLsizeiptr length, GLbitfield access) { -#ifdef QT_OPENGL_ES_3 - if (QOpenGLContext::currentContext()->format().majorVersion() >= 3) - return ::glMapBufferRange(target, offset, length, access); + if (isES3()) + return qgles3Helper()->MapBufferRange(target, offset, length, access); else -#endif - RESOLVE_FUNC(GLvoid *, 0, MapBufferRange)(target, offset, length, access); + RESOLVE_FUNC(GLvoid *, 0, MapBufferRange)(target, offset, length, access); } static GLboolean QOPENGLF_APIENTRY qopenglfResolveUnmapBuffer(GLenum target) { -#ifdef QT_OPENGL_ES_3 - if (QOpenGLContext::currentContext()->format().majorVersion() >= 3) - return ::glUnmapBuffer(target); + if (isES3()) + return qgles3Helper()->UnmapBuffer(target); else -#endif - RESOLVE_FUNC(GLboolean, ResolveOES, UnmapBuffer)(target); + RESOLVE_FUNC(GLboolean, ResolveOES, UnmapBuffer)(target); } static void QOPENGLF_APIENTRY qopenglfResolveBlitFramebuffer(GLint srcX0, GLint srcY0, GLint srcX1, GLint srcY1, GLint dstX0, GLint dstY0, GLint dstX1, GLint dstY1, GLbitfield mask, GLenum filter) { -#ifdef QT_OPENGL_ES_3 - if (QOpenGLContext::currentContext()->format().majorVersion() >= 3) - ::glBlitFramebuffer(srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1, mask, filter); + if (isES3()) + qgles3Helper()->BlitFramebuffer(srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1, mask, filter); else -#endif - RESOLVE_FUNC_VOID(ResolveEXT | ResolveANGLE | ResolveNV, BlitFramebuffer) - (srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1, mask, filter); + RESOLVE_FUNC_VOID(ResolveEXT | ResolveANGLE | ResolveNV, BlitFramebuffer) + (srcX0, srcY0, srcX1, srcY1, dstX0, dstY0, dstX1, dstY1, mask, filter); } static void QOPENGLF_APIENTRY qopenglfResolveRenderbufferStorageMultisample(GLenum target, GLsizei samples, GLenum internalFormat, GLsizei width, GLsizei height) { -#ifdef QT_OPENGL_ES_3 - if (QOpenGLContext::currentContext()->format().majorVersion() >= 3) - ::glRenderbufferStorageMultisample(target, samples, internalFormat, width, height); + if (isES3()) + qgles3Helper()->RenderbufferStorageMultisample(target, samples, internalFormat, width, height); else -#endif - RESOLVE_FUNC_VOID(ResolveEXT | ResolveANGLE | ResolveNV, RenderbufferStorageMultisample) - (target, samples, internalFormat, width, height); + RESOLVE_FUNC_VOID(ResolveEXT | ResolveANGLE | ResolveNV, RenderbufferStorageMultisample) + (target, samples, internalFormat, width, height); } static void QOPENGLF_APIENTRY qopenglfResolveGetBufferSubData(GLenum target, qopengl_GLintptr offset, qopengl_GLsizeiptr size, GLvoid *data) @@ -3494,4 +3534,9 @@ QOpenGLExtensionsPrivate::QOpenGLExtensionsPrivate(QOpenGLContext *ctx) GetBufferSubData = qopenglfResolveGetBufferSubData; } +QOpenGLES3Helper *QOpenGLExtensions::gles3Helper() +{ + return qgles3Helper(); +} + QT_END_NAMESPACE |