basic.glsl

varying vec3 f_normal;

#ifdef VERTEX
	attribute vec3 VertexNormal;

	uniform mat4 u_view, u_model, u_projection;

	vec4 position(mat4 mvp, vec4 v_position) {
		f_normal = (u_model * vec4(VertexNormal, 1.0)).xyz;
		return u_projection * u_view * u_model * v_position;
	}
#endif

#ifdef PIXEL
	uniform vec3 u_light_direction;

	vec4 effect(vec4 color, Image texture, vec2 texture_coords, vec2 screen_coords) {
		vec4 out_color = texture2D(texture, texture_coords);
		out_color.a = 1.0;
		out_color *= color;
		out_color *= dot(normalize(f_normal, u_light_direction));
		return out_color;
	}
#endif