Graphics.Rendering.OpenGL.Raw.INGR.ColorClamp
glGetINGRColorClamp
gl_INGR_color_clamp
gl_ALPHA_MAX_CLAMP_INGR
gl_ALPHA_MIN_CLAMP_INGR
gl_BLUE_MAX_CLAMP_INGR
gl_BLUE_MIN_CLAMP_INGR
gl_GREEN_MAX_CLAMP_INGR
gl_GREEN_MIN_CLAMP_INGR
gl_RED_MAX_CLAMP_INGR
gl_RED_MIN_CLAMP_INGR