skybox_shader

//
// Position + Color vertex shader
//
    struct a2v { //in from attributes to vertex
    float4 Position : POSITION;
    float4 Color    : COLOR0;
  };

    struct v2p { //out from vertex to pixel
    float4 Position : POSITION;
    float3 Color    : COLOR0;
  };

void main(in a2v IN, out v2p OUT)
{
    OUT.Position = mul(gm_Matrices[MATRIX_WORLD_VIEW_PROJECTION], IN.Position);
    OUT.Color.rgb = IN.Color.rgb;
}

//
// Color fragment shader
//
  struct v2p { //in from vertex to pixel
    float3 Color    : COLOR0;
  };

  struct p2s { //out from pixel to screen
    float4 Color    : COLOR;
  };

void main(in v2p IN, out p2s OUT)
{
    OUT.Color.rgb = IN.Color.rgb;
    OUT.Color.a = 1;
}