Thread: Blend problem
View Single Post
Old 11-21-06, 11:19 AM   #2
NVIDIA Corporation
AaronP's Avatar
Join Date: Mar 2005
Posts: 2,487
Default Re: Blend problem

glBlendColor doesn't set the output alpha of fragments, it just controls the coefficients in the blend equation. You'll need to control the output alpha some other way, e.g. with glColor4f. Alternatively, you can disable blending or use glBlendFunc(GL_CONSTANT_ALPHA, GL_ONE_MINUS_CONSTANT_ALPHA) before performing the glDrawPixels.
AaronP is offline   Reply With Quote