source: GTP/trunk/App/Demos/Illum/Shark3D/version164x12u/IllumDemo/src/res/levelutil/shader/prog/d3d9_hlsl/gtp_plain_cubequad_d3d9_hlsl_ps3x0.s3d_shadercode @ 2196

struct PS_INPUT
{
    float4 posScr: POSITION;
    float2 texCoord: TEXCOORD0;
    float2 screenCoord: TEXCOORD1;    
};


struct PS_OUTPUT
{
    float4  color: COLOR0;
};

///////////////////////////////////////////////////////////////////////////////

sampler tex0: register(s0);

///////////////////////////////////////////////////////////////////////////////
// Pixelshader
// Profile: 2x0
const int CUBEMAP_SIZE = 128;
const int REDUCED_CUBEMAP_SIZE = 4;

PS_OUTPUT main(PS_INPUT input)
{
    PS_OUTPUT output;
    
    
    int a = input.texCoord.x;
    int b = input.texCoord.y;
    int nFace = a * 3.0 + b;
    float2 texCoord;
    
    if(input.texCoord.x < 1.0 / 3.0)
    {
      if(input.texCoord.y < 1.0 / 2.0)
      {
        nFace = 0;
         texCoord = (input.texCoord - float2(0,0))*float2(3.0, 2.0);
      }
      else
      {
        nFace = 1;
        texCoord = (input.texCoord - float2(0,0.5))*float2(3.0, 2.0);
      }
    }
    else if(input.texCoord.x < 2.0 / 3.0)
    {
      if(input.texCoord.y < 1.0 / 2.0)
      {
        nFace = 2;
        texCoord = (input.texCoord - float2(1.0 / 3.0, 0.0))*float2(3.0, 2.0);
      }
      else
      {
        nFace = 3;
        texCoord = (input.texCoord - float2(1.0 / 3.0, 0.5))*float2(3.0, 2.0);
      }
    }
    else
    {
      if(input.texCoord.y < 1.0 / 2.0)
      {
        nFace = 4;
        texCoord = (input.texCoord - float2(2.0 / 3.0, 0.0))*float2(3.0, 2.0);
      }
      else
      {
        nFace = 5;
        texCoord = (input.texCoord - float2(2.0 / 3.0, 0.5))*float2(3.0, 2.0);
      }
    }
    
    float3 dir; 
    float4 color = float4(0,0,0,0);  
    //float2 pos = (input.texCoord - float2(a, b)) * 2.0 - 1.0;
    float2 pos = texCoord * 2.0 - 1.0 ;// 1.0 /128.0;
    
    
    if (nFace == 0) dir = float3(1, pos.y, pos.x);
    if (nFace == 1) dir = float3(-1, pos.y, -pos.x);
    if (nFace == 2) dir = float3(pos.x, 1, -pos.y);
    if (nFace == 3) dir = float3(pos.x, -1, pos.y);
    if (nFace == 4) dir = float3(pos.x, pos.y, 1);
    if (nFace == 5) dir = float3(-pos.x, pos.y,-1);
  /*  
    if (nFace == 0) output.color = float4(1, 0, 0, 1);
    if (nFace == 1) output.color = float4(0.5, 0, 0, 1);
    if (nFace == 2) output.color = float4(0, 1, 0, 1);
    if (nFace == 3) output.color = float4(0, 0.5, 0, 1);
    if (nFace == 4) output.color = float4(0, 0, 1, 1);
    if (nFace == 5) output.color = float4(0, 0, 0.5, 1);*/
    
    output.color = texCUBE( tex0, dir);
    //output.color = tex2Dlod( tex0, float4(input.texCoord.xy ,0,0));
    //output.color = float4(input.texCoord,0,1);
    return output;
}

///////////////////////////////////////////////////////////////////////////////