View Full Version : cgfx and glsl documentation

10-23-2005, 07:27 AM
hello, ( i am bad speak engl) I mast write cgfx (or glsl) shader with using NV technology for MAYA.
All that I found in Maya example I used in cgfx shader.
but I have problem with count of texcoord (maybe Maya used only 4 as TEXCOORD5 ignore) and alpha test.
If I am written:
AlphaFunc = EQUAL;
AlphaTestEnable = true;
- all ok bat not work
AlphaRef = 156;
- no understand “AlphaRef “

I can’t find information or examples about this.

Maybe easier rewrite it to glsl… When I can find documentation cgfx or examples glsl with alpha test.

10-23-2005, 09:17 AM
Try this:

AlphaFunc = float2(EQUAL,156/255.0);
AlphaTestEnable = true;Greetz,


10-23-2005, 11:37 AM
its really working.
very big thank you!

can you tell me whan I can get manual about this?

what is the "SampleAlphaToOneEnable" for example? and the like...

10-24-2005, 07:28 AM
These are documented in the latest Cg 1.4 Users Manual: