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Intel 2700g Alpha Blending Issue

PostPosted: Nov 13, 2005 @ 2:20pm
by Tala
I have some issues with alpha blending using OpenGL and the X50v.
Apparently OpenGL|ES supports

glEnable(GL_ALPHA_TEST);

but does not support glAlphaFunc();

As workaround i am using alpha blending via

glEnable(GL_BLEND);
glBlendFunc(GL_SRC_ALPHA,GL_ONE_MINUS_SRC_ALPHA);

However this is quite slow, since in contrary to GL_ALPHA_TEST it really blends with the color buffer.

Did anyone successfully used GL_ALPHA_TEST or has any ideas? I am using a 5:5:5:1 Texture format.

Tala