Separate Specular Color Conformance Test Proposal
Bill Armstrong, E&S (armstron@es.com)

At the previous ARB meeting I took the assignment to propose a
conformance test for the separate specular color extension. I think the
test only needs to check the controls and that colors are ending up in
the appropriate places. Here is what I propose.

Draw a point with material colors: black ambient and emission, red
diffuse, and green specular. Set up a light and normal to produce fully
white ambient, diffuse, and specular light. Enable lighting. Define a
purely blue texture map, set the texture coordinates to draw from it,
and the texture mode to replace. Draw four cases:

    case 1) result should be yellow
	texture disabled
	LIGHT_MODEL_COLOR_CONTROL = SINGLE_COLOR

    case 2) result should be blue
	texture enabled
	LIGHT_MODEL_COLOR_CONTROL = SINGLE_COLOR

    case 3) result should be yellow
	texture disabled
	LIGHT_MODEL_COLOR_CONTROL = SEPARATE_SPECULAR_COLOR

    case 4) result should be magenta
	texture enabled
	LIGHT_MODEL_COLOR_CONTROL = SEPARATE_SPECULAR_COLOR

Repeat these test with red in the ambient and emissive components.

Repeat all the tests again with lighting disabled to verify that the
controls have no effect. If the color is white, all tests should give
white.