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View Full Version : texture combine modes etc.



JanHH
10-23-2003, 05:35 PM
Hello,

is there any tutorial explainig all those texture combining modes (GL_TEXTURE_COMBINE_EXT)? I find them quite complicated and cannot find any documentation that is really a) complete and b) understandable.. any links?

Thanks
Jan

satan
10-24-2003, 03:56 AM
I don't know of any tutorial dealing only with the texture combine functions, but they are really not that hard to understand. I think you know what the extension is good for and all info needed you can find in the SGI extension registry (take a look at all GL_ARB_texture_env extensions). If you understand how blending works you will very fast understand how to use texture combine.

JanHH
10-24-2003, 06:23 AM
I have already looked there, I know how blending works and I know what the extension is good for, but I still do not completely understand it, it seems like this is easy for everyone except for me http://www.opengl.org/discussion_boards/ubb/wink.gif. I will look again and then post more questions, I hope this is ok.

Thanks
Jan

gator
10-24-2003, 10:52 AM
The latest OpenGL v1.4 specs are here: http://www.opengl.org/developers/documentation/specs.html

There's a table somewhere around page 155-156 that lists the arguments for COMBINE_RGB.

But, I wouldn't expect anybody to immediately understand it if they never used these arguments before. http://www.opengl.org/discussion_boards/ubb/smile.gif