# Program to color objects from their normal vectors
#
# May be used in place of `BlinnPhongProgram` for debugging or effect.
class NormalProgram
	super BlinnPhongProgram

	redef var fragment_shader_source = """
		precision mediump float;

		// Input from the vertex shader
		varying vec3 v_normal;

		void main()
		{
			gl_FragColor = vec4(v_normal*0.5 + 0.5, 1.0);
		}
		""" @ glsl_fragment_shader
end