gistfile1.txt

// DIFFUSE LIGHT

float4x4 wvp : WorldViewProjection;
float4x4 world : World;

float AmbientIntensity = 0.01;
float4 AmbientColor : AMBIENT = float4(1,1,1,1);

float3 LightDirection : Direction = float3(100,-100,100);

texture ColorMap : Diffuse;
sampler ColorMapSampler = sampler_state
{
    texture = <ColorMap>;   
MipFilter = Anisotropic;
MinFilter = Anisotropic;
MagFilter = Anisotropic;
};

struct VS_IN
{
    float4 Position : POSITION;
    float2 TexCoord : TEXCOORD0;
    float3 Normal : NORMAL;   
};
struct VS_OUT
{
    float4 Position : POSITION;
    float2 TexCoord : TEXCOORD0;
    float3 Light : TEXCOORD1;
    float3 Normal : TEXCOORD2;   
};
struct PS_OUT
{
    float4 Color : COLOR;
};
VS_OUT VS_ColorMap(VS_IN input)
{
    VS_OUT output = (VS_OUT)0;
    output.Position = mul(input.Position,wvp);   
    output.Light = LightDirection;
    output.TexCoord = input.TexCoord;
    output.Normal = mul(input.Normal,world);
    return output;
}


PS_OUT PS_ColorMap(VS_OUT input)
{
    PS_OUT output = (PS_OUT)0;
    float3 LightDir = normalize(input.Light);
    float Diffuse = saturate(dot(LightDir,normalize(input.Normal)));
    float4 texCol = tex2D(ColorMapSampler,input.TexCoord);
    float4 Ambient = AmbientIntensity * AmbientColor;
    texCol *= Diffuse;
    output.Color =  Ambient + texCol;
    return output;
}

technique def
{
	pass p0
	{
         VertexShader = compile vs_1_1 VS_ColorMap();
         PixelShader  = compile ps_2_0  PS_ColorMap();
	}
}