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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.
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8 changed files with 158 additions and 35 deletions
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@ -115,6 +115,7 @@ public:
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virtual void gl_lightfv(GLenum light, GLenum pname, GLfloat const* params) = 0;
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virtual void gl_materialf(GLenum face, GLenum pname, GLfloat param) = 0;
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virtual void gl_materialfv(GLenum face, GLenum pname, GLfloat const* params) = 0;
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virtual void gl_color_material(GLenum face, GLenum mode) = 0;
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virtual void present() = 0;
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};
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