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[GLSL] What does "product" mean in gl_FrontLightProduct?

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1 comment, last by riruilo 14 years, 4 months ago
Hi all! What does "product" mean in gl_FrontLightProduct? Thanks.
I've seen things you people wouldn't believe. Attack ships on fire off the shoulder of Orion. I watched C-beams glitter in the dark near the Tannhauser gate. All those moments will be lost in time, like tears in rain. Time to die.
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In mathematics, "product" means the same as "multiplied".

The front light product is the light parameters multiplied by the front-material parameters.

So, roughly speaking:
gl_FrontLightProduct == gl_FrontMaterial * gl_LightSource

See:
http://www.opengl.org/registry/doc/GLSLangSpec.1.50.09.pdf

. 22 Racing Series .

Quote:Original post by Hodgman
In mathematics, "product" means the same as "multiplied".

The front light product is the light parameters multiplied by the front-material parameters.

So, roughly speaking:
gl_FrontLightProduct == gl_FrontMaterial * gl_LightSource

See:
http://www.opengl.org/registry/doc/GLSLangSpec.1.50.09.pdf


Ok, thanks a lot. Very helpful.
I've seen things you people wouldn't believe. Attack ships on fire off the shoulder of Orion. I watched C-beams glitter in the dark near the Tannhauser gate. All those moments will be lost in time, like tears in rain. Time to die.

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