void main
(
  float2 texcoord,
  float2 position,
  float4 color,
  uniform float4x4 modelViewProj,
  out float4 oPosition : POSITION,
  out float2 oTexCoord : TEXCOORD0,
  out float4 oColor : COLOR
)
{
  oPosition = mul(float4(position, 0.0, 1.0), modelViewProj);
  oTexCoord = texcoord;
  oColor = color;
}