View Full Version : Help Using wglChoosePixelFormatEXT
Hi, I'm trying to use the wglChoosePixelFormatEXT instead of wglChoosePixelFormat. Thing is, wglGetProcAddress returns NULL for any extension unless I already have a valid and current rendering context! The extension docs say calls to wglChoosePixelFormatEXT and wglChoosePixelFormat shouldn't be mixed, so how can I use wglChoosePixelFormatEXT without calling wglChoosePixelFormat first?
You can't. You must have a valid RC before you can load extensions, period.
I think the intended usage of the extension is for dealing with Pbuffers.
These days, if your board supports it, GL_EXT_framebuffer_object (FBO) is the preferred way of doing RTT/off-screen rendering.
ChoosePixelFormat is fine for the primary render target.
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