// This is based on C2E1v_green from "The Cg Tutorial" (Addison-Wesley, ISBN // 0321194969) by Randima Fernando and Mark J. Kilgard. See page 38. struct C2E1v_Output { float4 position : POSITION; float3 color : COLOR; }; C2E1v_Output C2E1v_green(float2 position : POSITION) { C2E1v_Output OUT; OUT.position = float4(position,0,1); OUT.color = float3(0,1,0); return OUT; }