Sample MonGame GLSL .fx Shader

gistfile1.glsl

attribute vec4 vertex;
attribute vec2 texCoord;

void vs_main()
{
}

varying vec3 LightDirection;
varying vec3 LightColor;
varying vec3 AmbientColor;

varying vec4 color;
varying vec2 texCoord;
 
uniform sampler2D TextureSampler;
uniform sampler2D NormalSampler;
 
void ps_main()
{
	//Look up the texture value
    vec4 tex = texture2D(TextureSampler, texCoord);
 
    //Look up the normalmap value
    vec4 normal = (texture2D(NormalSampler, texCoord) - 1.0) * 2;
    
    // Compute lighting.
    float lightAmount = max(dot(normal.xyz, LightDirection), 0.0);
    vec3 color = AmbientColor + (lightAmount * LightColor);
 
    gl_FragColor = tex * color;
}
 
technique Normalmap
{
    pass Pass1
    {
        VertexShader = compile vs_main();
        PixelShader = compile ps_main();
    }
}