I’ve seen as many different parameters as many source codes I saw. Is there a description can be found somewhere that refers all about those parameters in details?
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I’ve seen as many different parameters as many source codes I saw. Is there a description can be found somewhere that refers all about those parameters in details?
This is pretty comprehensive.
http://www.khronos.org/opengles/sdk/1.1/docs/man/glTexEnv.xml
There are also some tex-env extensions — I think at least add and combine are supported on most GLES 1.1 hardware, and I think PowerVR cores support dot3.
http://www.opengl.org/registry/specs/ARB/texture_env_combine.txt
http://www.opengl.org/registry/specs/ARB/texture_env_dot3.txt
http://www.opengl.org/registry/specs/EXT/texture_env_add.txt
The PowerVR SGX hardware has some fine print about combine modes – be sure to read the PowerVR docs.