FRAG
DCL IN[0], GENERIC[0], PERSPECTIVE
DCL IN[1], COLOR, PERSPECTIVE
DCL OUT[0], COLOR
DCL SAMP[0]
DCL TEMP[0..2]
IMM[0] FLT32 {    0.0000,     1.0000,     0.0000,     0.0000}
  0: SGT TEMP[2], IN[0].xyxy, IMM[0].xxxx
  1: SLT TEMP[1], IN[0].xyxy, IMM[0].yyyy
  2: MIN TEMP[1], TEMP[1], TEMP[2]
  3: MIN TEMP[1], TEMP[1].xxxx, TEMP[1].yyyy
  4: TEX TEMP[2], IN[0], SAMP[0], 2D
  5: MUL TEMP[0], TEMP[2], TEMP[1]
  6: MUL OUT[0], TEMP[0], IN[1].wwww
  7: END