// This is C3E5v_twoTextures from "The Cg Tutorial" (Addison-Wesley, ISBN
// 0321194969) by Randima Fernando and Mark J. Kilgard.  See page 83.

struct C3E5v_Output
{
    float4 position : POSITION;
    float2 leftTexCoord : TEXCOORD0;
    float2 rightTexCoord : TEXCOORD1;
};

// NOTE:  The version below corrects an editing error in the book's version.

C3E5v_Output C3E5v_twoTextures(float2 position : POSITION,
                               float2 texCoord : TEXCOORD0,                  

                               uniform float2 leftSeparation,
                               uniform float2 rightSeparation)
{
  C3E5v_Output output;
  output.position     = float4(position, 0, 1);
  output.leftTexCoord  = texCoord + leftSeparation;
  output.rightTexCoord = texCoord + rightSeparation;
  
  return output;
}