source: GTP/trunk/App/Demos/Illum/Ogre/Media/materials/programs/GameTools_HPS_Smoke_L.hlsl @ 1424

struct VS_OUT
{
        float4 hPosition        : POSITION;
        float4 cPosition        : TEXCOORD1;
        float2 texCoord         : TEXCOORD0;
        float r                         : TEXCOORD2;    
        float4 center           : TEXCOORD3;
        float4 Color            : TEXCOORD4;    
};

VS_OUT HPS_Smoke_L_VS (float4 position : POSITION,      
                float4 texCoord : TEXCOORD0,
                float4 Color: COLOR0,
                uniform float baseRadius,
                uniform float4x4 worldView,
                uniform float4x4 Proj,
                uniform float4x4 worldViewProj)
{
        VS_OUT OUT;
    float2 offset = texCoord.zw * baseRadius;
        float4 cPosition;   
        cPosition = mul(worldView, position);
        OUT.center = cPosition; 
        cPosition.xy += offset;                         
        OUT.cPosition = cPosition;
        OUT.r = abs(offset.x);          
 
    OUT.hPosition = mul( Proj, cPosition );
     
    OUT.texCoord = texCoord.xy;  
    OUT.Color = Color;  
        return OUT;
} 


float4 HPS_Smoke_L_PS(VS_OUT IN,
                                                uniform float4x4 Proj,
                                                uniform sampler2D Texture       ) : COLOR
{
        float4 Color = 0;
        Color = tex2D(Texture, IN.texCoord);
        Color = float4(1, 1, 1, Color.a) * IN.Color;
        return Color; 
}