texture_env_combine issue with constant color

OpenGL OpenGL: Advanced Coding
1

Hi

After some tests i´ve come to the conclusion, that it is not possible to access the constant color on another texture unit than the first (that means TU0).

On all other texture-units i get wrong results (usually black).

This is on a Gf 4 with the latest drivers.

Is this an extension-restriction? I didn´t find anything about it in the spec. And it is a big problem for me!

Jan.

2

Each texture unit has its own constant color.

– Tom

3

Yeah, that´s great!

Now it works. Man, i really didn´t think of that possibility.

Thanks,
Jan.

4

just the good old TNT2 has just one constant because of a hardware restriction , at first i thought it was my fault but then one of the nv guys here around stated that