glextensions.cpp Example File
graphicsview/boxes/glextensions.cpp
#include "glextensions.h"
#define RESOLVE_GL_FUNC(f) ok &= bool((f = (_gl##f) context->getProcAddress(QLatin1String("gl" #f))));
bool GLExtensionFunctions::resolve(const QGLContext *context)
{
bool ok = true;
RESOLVE_GL_FUNC(GenFramebuffersEXT)
RESOLVE_GL_FUNC(GenRenderbuffersEXT)
RESOLVE_GL_FUNC(BindRenderbufferEXT)
RESOLVE_GL_FUNC(RenderbufferStorageEXT)
RESOLVE_GL_FUNC(DeleteFramebuffersEXT)
RESOLVE_GL_FUNC(DeleteRenderbuffersEXT)
RESOLVE_GL_FUNC(BindFramebufferEXT)
RESOLVE_GL_FUNC(FramebufferTexture2DEXT)
RESOLVE_GL_FUNC(FramebufferRenderbufferEXT)
RESOLVE_GL_FUNC(CheckFramebufferStatusEXT)
RESOLVE_GL_FUNC(ActiveTexture)
RESOLVE_GL_FUNC(TexImage3D)
RESOLVE_GL_FUNC(GenBuffers)
RESOLVE_GL_FUNC(BindBuffer)
RESOLVE_GL_FUNC(BufferData)
RESOLVE_GL_FUNC(DeleteBuffers)
RESOLVE_GL_FUNC(MapBuffer)
RESOLVE_GL_FUNC(UnmapBuffer)
return ok;
}
bool GLExtensionFunctions::fboSupported() {
return GenFramebuffersEXT
&& GenRenderbuffersEXT
&& BindRenderbufferEXT
&& RenderbufferStorageEXT
&& DeleteFramebuffersEXT
&& DeleteRenderbuffersEXT
&& BindFramebufferEXT
&& FramebufferTexture2DEXT
&& FramebufferRenderbufferEXT
&& CheckFramebufferStatusEXT;
}
bool GLExtensionFunctions::openGL15Supported() {
return ActiveTexture
&& TexImage3D
&& GenBuffers
&& BindBuffer
&& BufferData
&& DeleteBuffers
&& MapBuffer
&& UnmapBuffer;
}
#undef RESOLVE_GL_FUNC