can't get 128 bit color buffer on Radeon 9700

OpenGL OpenGL: Advanced Coding
1

Please help me.

I can’t get floating point RGBA mode with wgl_ati_pixel_format_float.
When I choose pixel format with wglChoosePixelFormatARB (and set
WGL_PIXEL_TYPE_ARB to WGL_TYPE_RGBA_FLOAT_ATI) the result is
successful but the pixel format is undefined. So I querried for
WGL_PIXEL_TYPE_ARB all 40 pixel format with wglGetPixelFormatAttribiv.
Guess what? None of the pixel formats has WGL_TYPE_RGBA_FLOAT_ATI
type.

Please tell what is wrong.

bonzaj

2

Only Pbuffers support those formats.

3

Great.
Thanks. Now everything is clear for me now.
Pity that in ATI’s specs there’s nothing about it.

bonzaj

4

Well, there’s nothing preventing future hardware from supporting it in the framebuffer too.

5

Yup.

Also, for reference, here is a complete pixel format list for the R300: http://www.area3d.net/nitrogl/pixelformats.txt