struct fsOutput {
    float4 color : COLOR;
};

uniform sampler2D color_texture : TEXUNIT0;
uniform sampler2D normal_texture : TEXUNIT1;

fsOutput FS_Main(float2 colorCoords : TEXCOORD0,
            float2 normalCoords: TEXCOORD1)
{

    fsOutput fragm;


    float4 anorm = tex2D(normal_texture, normalCoords);
    float3 normal = normalize(anorm.rgb * 2.0f - 1.0f);
    float3 light_pos = normalize(float3(1.0f, 1.0f, 1.5f));
    float diffuse = max(dot(normal, light_pos), 0.0);
    float3 color = diffuse * tex2D(color_texture, colorCoords).rgb;
    fragm.color = float4(1.0f,1.0f,1.0f,1.0f);
    return fragm;
}