gallium: remove TGSI_OPCODE_SUB

[mesa.git] / src / mesa / state_tracker / st_mesa_to_tgsi.c

diff --git a/src/mesa/state_tracker/st_mesa_to_tgsi.c b/src/mesa/state_tracker/st_mesa_to_tgsi.c
index 1768356413c503b3c8a5719a57a40eb0c8aa4ff9..f906fedae1817f58c1c2b85d5f4365c6ef35cbfb 100644 (file)
--- a/src/mesa/state_tracker/st_mesa_to_tgsi.c
+++ b/src/mesa/state_tracker/st_mesa_to_tgsi.c
@@ -481,8 +481,6 @@ translate_opcode( unsigned op )
       return TGSI_OPCODE_SIN;
    case OPCODE_SLT:
       return TGSI_OPCODE_SLT;
-   case OPCODE_SUB:
-      return TGSI_OPCODE_SUB;
    case OPCODE_TEX:
       return TGSI_OPCODE_TEX;
    case OPCODE_TXB:
@@ -566,6 +564,10 @@ compile_instruction(
       ureg_MOV(ureg, dst[0], ureg_abs(src[0]));
       break;
 
+   case OPCODE_SUB:
+      ureg_ADD(ureg, dst[0], src[0], ureg_negate(src[1]));
+      break;
+
    default:
       ureg_insn( ureg, 
                  translate_opcode( inst->Opcode ),