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LibGL+LibSoftGPU: Implement glColorMaterial and GL_COLOR_MATERIAL

When `GL_COLOR_MATERIAL` is enabled, specific material parameters can
be overwritten by the current color per-vertex during the lighting
calculations. Which parameter is controlled by `glColorMaterial`.

Also move the lighting calculations _before_ clipping, because the spec
says so. As a result, we interpolate the resulting vertex color instead
of the input color.
This commit is contained in:
Jelle Raaijmakers 2022-01-13 03:03:35 +01:00 committed by Andreas Kling
parent 9d4c2f6308
commit 8e935ad3b1
8 changed files with 158 additions and 35 deletions

View file

@ -33,6 +33,20 @@ enum class BlendFactor {
SrcAlphaSaturate,
};
enum class ColorMaterialFace {
Front,
Back,
FrontAndBack,
};
enum class ColorMaterialMode {
Ambient,
AmbientAndDiffuse,
Diffuse,
Emissive,
Specular,
};
enum class DepthTestFunction {
Never,
Always,