//
// Simple ambient lighting model
// I=Aintensity * Acolour
// Where:
// Aintensity is the ambient light intensity
// Acolour is the colour of the ambient light
// These lines are just for EffectEdit:
string XFile = "tiger\\tiger.x";   // model
int    BCLR = 0xff202080;          // background
// transformations provided by the app:
float4x4 matWorldViewProj: WORLDVIEWPROJECTION;
struct PSOutput
{
    float4 colour : COLOR;
};
// Pixel shader that calculates ambient light
PSOutput PS()
{
    PSOutput Out=(PSOutput)0;
    float Aintensity=0.8f;
    float4 Acolour=float4(1.0,0.5,0.5,1.0);
    Out.colour=Aintensity*Acolour;
    return Out; 
}
// the format of our vertex data
struct VS_OUTPUT
{
    float4 Pos  : POSITION;
};
// Vertex Shader - simply carry out transformation
VS_OUTPUT VS(float4 Pos  : POSITION)
{
    VS_OUTPUT Out = (VS_OUTPUT)0;
    Out.Pos = mul(Pos,matWorldViewProj);
    return Out;
}
// Effect technique to be used
technique TVertexAndPixelShader
{
    pass P0
    {
        // shaders
        VertexShader = compile vs_1_1 VS();
        PixelShader  = compile ps_1_1 PS();
    }  
}