//------------------------------------------------------------------------------------------
// Shader settings
//------------------------------------------------------------------------------------------
texture gCustomTexture;
float2 posAdd = float2(0,0); // move uv(0 - 1) left right , up down
float2 posMult = float2(1,1); // stretch uv(0 - n ) x , y
float4 gColorMult = float4(1,1,1,1); // multiply r g b a colors (0 - 1)
//------------------------------------------------------------------------------------------
// Include some common stuff
//------------------------------------------------------------------------------------------
texture gTexture0  < string textureState="0,Texture"; >;

//------------------------------------------------------------------------------------------
// Sampler for the textures
//------------------------------------------------------------------------------------------
sampler Sampler0 = sampler_state
{
    Texture = (gTexture0);
};

sampler SamplerCustom = sampler_state
{
    Texture = (gCustomTexture);
};

//------------------------------------------------------------------------------------------
// Pixel Shader
//------------------------------------------------------------------------------------------
float4 PSFunction(float4 TexCoord : TEXCOORD0, float4 Position : POSITION, float4 Color : COLOR0) : COLOR0
{
    float2 textureCoordinate = TexCoord.xy;
    textureCoordinate *=  posMult;
    textureCoordinate +=  posAdd;
    float4 Tex0 = tex2D(Sampler0, TexCoord.xy);
    float4 Tex1 = tex2D(SamplerCustom, textureCoordinate) * gColorMult;
    float4 Tex = lerp(Tex1, Tex0, Tex1.a);
    Tex *= Color;
    return saturate(Tex);
}

//------------------------------------------------------------------------------------------
// Techniques
//------------------------------------------------------------------------------------------
technique texRepTra
{
    pass p0
    {
        PixelShader = compile ps_2_0 PSFunction();
    }
}

technique fallback
{
    pass P0
    {

    }
}