Mesa (mesa_7_7_branch): r600: add support for TXB instruction

[Andre Maasikas]

Module: Mesa
Branch: mesa_7_7_branch
Commit: 369669ff9a7ff7636cadef8e2b13f2f28face98f
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=369669ff9a7ff7636cadef8e2b13f2f28face98f

Author: Andre Maasikas <amaasikas at gmail.com>
Date:   Thu Dec  3 12:26:44 2009 +0200

r600: add support for TXB instruction

makes testing other things easier - does not hang the card
TODO: enable TEX dependency tracking in vertex programs

---

 src/mesa/drivers/dri/r600/r700_assembler.c |   26 +++++++++-----------------
 1 files changed, 9 insertions(+), 17 deletions(-)

diff --git a/src/mesa/drivers/dri/r600/r700_assembler.c b/src/mesa/drivers/dri/r600/r700_assembler.c
index 6ff08e1..be875ae 100644
--- a/src/mesa/drivers/dri/r600/r700_assembler.c
+++ b/src/mesa/drivers/dri/r600/r700_assembler.c
@@ -3450,22 +3450,6 @@ GLboolean assemble_TEX(r700_AssemblerBase *pAsm)
 	    need_barrier = GL_TRUE;
     }
 
-    switch (pAsm->pILInst[pAsm->uiCurInst].Opcode)
-    {
-        case OPCODE_TEX:
-            break;
-        case OPCODE_TXB:
-            radeon_error("do not support TXB yet\n");
-            return GL_FALSE;
-            break;
-        case OPCODE_TXP:
-            break;
-        default:
-            radeon_error("Internal error: bad texture op (not TEX)\n");
-            return GL_FALSE;
-            break;
-    }
-
     if (pAsm->pILInst[pAsm->uiCurInst].Opcode == OPCODE_TXP)
     {
         GLuint tmp = gethelpr(pAsm);
@@ -3644,7 +3628,15 @@ GLboolean assemble_TEX(r700_AssemblerBase *pAsm)
 
     }
 
-    pAsm->D.dst.opcode = SQ_TEX_INST_SAMPLE;
+    if(pAsm->pILInst[pAsm->uiCurInst].Opcode == OPCODE_TXB)
+    {
+        pAsm->D.dst.opcode = SQ_TEX_INST_SAMPLE_L;
+    }
+    else
+    {
+        pAsm->D.dst.opcode = SQ_TEX_INST_SAMPLE;
+    }
+
     pAsm->is_tex = GL_TRUE;
     if ( GL_TRUE == need_barrier )
     {