source: GTP/trunk/App/Demos/Illum/IBRBillboardCloudTrees/OGRE/IBRTreesOGRE/media/oldgeneral/tree_idtexturing_vp.shd @ 1493

float distanceScale;
float4 lightPosition;
float4 camera_pos;
float4x4 worldviewproj;
float4x4 proj_matrix;

/*
struct VS_OUTPUT {
   float4 Pos:       POSITION;
   float3 normal:    TEXCOORD0;
   float3 lightVec : TEXCOORD1;
   float3 viewVec:   TEXCOORD2;
   float4 shadowCrd: TEXCOORD3;
   float2 texCoord:  TEXCOORD4;
   float2 texCoordNormalized: TEXCOORD5;
};

VS_OUTPUT main_vp(
      float4 position : POSITION,
      float4 normal : NORMAL,
      float2 texCoord : TEXCOORD0,
      float2 texCoordNormalized : TEXCOORD1)
{
        VS_OUTPUT Out;

        Out.Pos = mul(worldviewproj, position);
        // World-space lighting
        Out.normal = normal;
        Out.lightVec = distanceScale * (lightPosition - position.xyz);
        Out.viewVec = camera_pos - position.xyz;
        Out.texCoord = texCoord;
        Out.texCoordNormalized = texCoordNormalized;

           // Project it. For this sample using the normal projection
           // matrix suffices, however, real applications will typically
           // use a separate projection matrix for each light depending
           // on its properties such as FOV and range.
           float4 sPos = mul(proj_matrix, Pos);

           // Use projective texturing to map the position of each fragment
           // to its corresponding texel in the shadow map.
           sPos.z += 10;
           Out.shadowCrd.x = 0.5 * (sPos.z + sPos.x);
           Out.shadowCrd.y = 0.5 * (sPos.z - sPos.y);
           Out.shadowCrd.z = 0;
           Out.shadowCrd.w = sPos.z;

           return Out;
}
*/
struct VS_OUTPUT {
   float4 Pos:       POSITION;
   float2 texCoord:    TEXCOORD0;
   float2 texCoordNormalized : TEXCOORD1;
};

VS_OUTPUT main_vp(
      float4 position : POSITION,
      float2 texCoord : TEXCOORD0,
      float2 texCoordNormalized : TEXCOORD1)
{
        VS_OUTPUT Out;

        Out.Pos = mul(worldviewproj, position);
        Out.texCoord = texCoord;
        Out.texCoordNormalized = texCoordNormalized;
         
           return Out;
}