Diffuse fragment shader

#version 330

in vec3 v_norm;
in vec4 v_pos;
in mat4 mv;
in vec3 v_lightDirection;
out vec4 outputColor;

void
main()
{
	vec3 ambientColor = vec3(0.1, 0.1, 0.1);
	vec3 lightColor = vec3(0.6, 0.55, 0.55);
	float lambertDiffuse = max(dot(v_norm, v_lightDirection), 0.0);

	outputColor.a = 1.0;
	outputColor.rgb = ambientColor + lightColor * lambertDiffuse;
}