View Full Version : Multitexturing....

06-30-2001, 03:17 AM
How can u tell OpenGL that f.i. GL_TEXTURE1_ARB is mapped on GL_TEXTURE0_ARB with a transperency of 0.7f or 0.2f etc. ? I can only achieve that both textures are mixed equally on my primitive....

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06-30-2001, 03:21 AM
Use the combine extension GL_ARB_texture_env_combine you also have NV_texture_env_combine4 for nvidia cards.

What is f.i.?

06-30-2001, 03:35 AM
f.i. = for instance

Can you please tell me how to use the func?? And the use of an alpha-value?

07-01-2001, 05:02 AM
There's a complete reference of register combiners in the newest nVidia OpenGL SDK Documentation(in the extensions specification), and it's downloadable from nvidia.com.


07-01-2001, 07:36 AM
Using register combiners (if you have a GeForce) can be great for more advanced stuff. For simpler things is it a overkill and probably not the easiest way to do it.

You will find some information in the NeHe tutorial 22. Zed has some samples on his page http://members.nbci.com/myBollux

07-01-2001, 01:53 PM
also check the ati developer website there used to be a utility there that'll demonstrate the tex_env_combine extension