I’m trying to create a 16 or 32 bits floating point PBuffer. It works well on NVidia cards, but i can’t get it working on ATI cards.
I’m using the WGL_ATI_pixel_format_float extension to setup the PBuffer. When i clear the pbuffer and do a glReadPixels, the value i read are clamped to 0-1.
I downloaded Mark Harris PBuffer’s class & samples (Mark Harris' Real-Time Graphics Research) and they do not seem to work either. This was tested on a Radeon 9700 Pro and on an X850 XT.
Any help is appreciated, thanks.