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coelurus

Texture blending

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Which is faster of regcoms or GL_ARB_env_combine? Perhaps I should just go on test both to see myself? But a correct, strict answer to this question would be nice of course EDIT: I just found out I need both at the same time, so it doesn't matter any longer ... But if you do have info on this, why not share? [edited by - coelurus on July 18, 2002 6:14:24 PM]

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You said regcoms, so we're talking nVidia GeForce and OpenGL only. The answer is rather easy: they are the same. At least, if you use the minimum number of regcom stages possible. That's exactly what extensions such as ARB_texture_env_combine or NV_texture_env_combine4 do: they use regcoms internally. As a matter of fact, newer GeForce class hardware internally only uses regcoms, this is how the fragment pipeline works. The fixed function pipeline is converted to regcom calls by the driver.

/ Yann

[edited by - Yann L on July 18, 2002 6:48:21 PM]

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