View Full Version : Does glGetString(GL_EXTENSIONS) display all support extensions of the video card?
05-29-2007, 01:26 PM
This probably seems like a silly question, but does glGetString(GL_EXTENSIONS) display every supported OpenGL extension supported by the video card?
I've run this program on my laptop and it does NOT show any of the following extensions:
Does that mean the ONLY way I can render-to-texture is by using gltexSubImage2d and glReadPixels?
WGL_ ... extensions arent in thew extension string (theyre windows specific theres also linux/apple extensions as well)
glReadPixels doesnt update a texture
are what u want
GL_EXT_framebuffer_object also can do it,
but your card mightnt support it
(this is prolly not a complete list)
if its not here + youve got the latest drivers post what gpu u have + someone could tell u if it supports FBO
05-29-2007, 02:13 PM
Unless you have checked something like "limit OpenGL extension string" in Nvidia Control Panel...
Have a look here, to check whether your card really don't have any of these extensions :
05-29-2007, 10:25 PM
For complete list of extensions you must call
The second call is extension function itself
which must be obtained before invocation.
PFNWGLGETEXTENSIONSSTRINGARBPROC wglGetExtensionsStringARB = (PFNWGLGETEXTENSIONSSTRINGARBPROC) wglGetProcAddress("wglGetExtensionsStringARB");
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