// This is a version using generic attributes of C6E3v_keyFrame from
// "The Cg Tutorial" (Addison-Wesley, ISBN 0321194969) by Randima Fernando
// and Mark J. Kilgard.  See page 159.

void generic_attrib_keyFrame(float3 positionA : ATTR0,
                             float3 positionB : ATTR1,
                           //float3 normalA   : ATTR2,
                           //float3 normalB   : ATTR3,                             
                             float2 texCoord  : ATTR4,
                             float4 color     : ATTR5,

                         out float4 oPosition : POSITION,
                         out float2 oTexCoord : TEXCOORD0,
                         out float4 oColor    : COLOR,

                     uniform float    keyFrameBlend,
                     uniform float4x4 modelViewProj)
{
  float3 position = lerp(positionA, positionB,
                         keyFrameBlend);
  oPosition = mul(modelViewProj, float4(position, 1));
  oTexCoord = texCoord;
  oColor = color;
}