source: GTP/branches/IllumWPdeliver2008dec/IlluminationWP/demos/OgreGames/SpaceStation/Media/GTPBasic/GTPBasic_PS.hlsl @ 3255

struct Plain_OUT
{
 float4 vPos : POSITION;
 float4 color :COLOR0;
};

struct PlainTex_OUT
{
 float4 vPos : POSITION;
 float4 color :COLOR0;
 float4 texCoord: TEXCOORD0;
};

struct VPos_OUT
{
 float4 VPos : POSITION;
 float4 VPosition : TEXCOORD0;
};

struct CPos_OUT
{
 float4 VPos : POSITION;
 float4 CPos : TEXCOORD0;
};

struct LightVPos_OUT
{
 float4 VPos : POSITION;
 float4 LightVPos : TEXCOORD0;
};



float4 VDepth(VPos_OUT IN) : COLOR
{
 float4 pos = IN.VPosition / IN.VPosition.w;
 return float4(pos.z, 0, 0, 1); 
}

float4 CDepth(CPos_OUT IN,
                                uniform float farplane) : COLOR
{
//return float4(0.5,0,0,0);
 return float4(-IN.CPos.z, -IN.CPos.z / farplane, 0, -IN.CPos.z);       
}

float4 CDist(CPos_OUT IN) : COLOR
{
 float dist = length(IN.CPos.xyz);
 return float4(dist, dist * dist, 1, dist);     
}

float4 CDistNorm(CPos_OUT IN,
                                uniform float farPlane) : COLOR
{
 float dist = length(IN.CPos.xyz) / farPlane;
 return float4(dist, dist * dist, 1, dist);     
}

float4 Plain(Plain_OUT IN) :COLOR0
{
 return IN.color;
}

float4 PlainTex2D(PlainTex_OUT IN,
                                  uniform sampler2D Texture) : COLOR
{
 return tex2D(Texture, IN.texCoord.xy);
}

float4 PlainTex2DColored(PlainTex_OUT IN,
                                        uniform float4 color,
                                  uniform sampler2D Texture) : COLOR
{
 return color * tex2D(Texture, IN.texCoord.xy);
}

float4 PlainTex1D(PlainTex_OUT IN,
                  uniform sampler1D Texture) : COLOR
{
 return IN.color * tex1D(Texture, IN.texCoord.x);
}

float4 PlainTex3D(PlainTex_OUT IN,
                  uniform sampler3D Texture) : COLOR
{
 return IN.color * tex3D(Texture, IN.texCoord.xyz);
}

float4 LightVPosPS(LightVPos_OUT IN):COLOR
{
 return float4(IN.LightVPos.xyz / IN.LightVPos.w, 1);
}