Graphics.Rendering.OpenGL.Raw.ARB.ColorBufferFloat
glGetARBColorBufferFloat
gl_ARB_color_buffer_float
gl_CLAMP_FRAGMENT_COLOR_ARB
gl_CLAMP_READ_COLOR_ARB
gl_CLAMP_VERTEX_COLOR_ARB
gl_FIXED_ONLY_ARB
gl_RGBA_FLOAT_MODE_ARB
glClampColorARB