This should indeed be changed. I quickly checked a GL extension database and it appears that mainly 3dlabs and Nvidia are advertising the extension. We could just drop the extension check as glBlendColor and friends are part of OpenGL 1.1 or move to GL_EXT_blend_color and friends. I think dropping the check is fine. I need to ask some others, if it is fine I'll post a patch for it.
Roderick
Hi all,
I noticed, that wine checks for GL_ARB_imaging, before performing operations like glBlendColor, glBlendEquation etc. However it appears that the ATI drivers do not support this extension, though they do support the blending operations.
I posted about this on the Rage3d linux driver boards, and the response seems to suggest that it would be better to check for the individual operations rather than the GL_ARB_imaging extension.
See bottom of http://rage3d.com/board/showthread.php?t=33814685
What do you guys think?
Kap.