From 08b7d32140a09a35bdfe93327dd7ee2333315bc1 Mon Sep 17 00:00:00 2001
From: Alex Deucher <alexdeucher@gmail.com>
Date: Fri, 11 Sep 2009 12:10:15 -0400
Subject: Revert "r600: support tex coords from constants"

This reverts commit 4099bb76148007f9ccb6c86838b2bf37ea42de56.

Tex coord src has to be a GPR.
---
 src/mesa/drivers/dri/r600/r700_assembler.c | 62 ++++++++++++++++++++++--------
 1 file changed, 45 insertions(+), 17 deletions(-)

diff --git a/src/mesa/drivers/dri/r600/r700_assembler.c b/src/mesa/drivers/dri/r600/r700_assembler.c
index 19ba87001f..2d8480daaf 100644
--- a/src/mesa/drivers/dri/r600/r700_assembler.c
+++ b/src/mesa/drivers/dri/r600/r700_assembler.c
@@ -1149,19 +1149,17 @@ GLboolean tex_dst(r700_AssemblerBase *pAsm)
 GLboolean tex_src(r700_AssemblerBase *pAsm)
 {
     struct prog_instruction *pILInst = &(pAsm->pILInst[pAsm->uiCurInst]);
+ 
+    GLboolean bValidTexCoord = GL_FALSE;
 
     switch (pILInst->SrcReg[0].File)
     {
     case PROGRAM_TEMPORARY:
+        bValidTexCoord = GL_TRUE;
+
         pAsm->S[0].src.reg   = pILInst->SrcReg[0].Index + pAsm->starting_temp_register_number;
         pAsm->S[0].src.rtype = SRC_REG_TEMPORARY;
-        break;
-    case PROGRAM_CONSTANT:
-    case PROGRAM_LOCAL_PARAM:
-    case PROGRAM_ENV_PARAM:
-    case PROGRAM_STATE_VAR:
-        pAsm->S[0].src.reg   = pILInst->SrcReg[0].Index;
-        pAsm->S[0].src.rtype = SRC_REG_CONSTANT;
+
         break;
     case PROGRAM_INPUT:
         switch (pILInst->SrcReg[0].Index)
@@ -1176,13 +1174,23 @@ GLboolean tex_src(r700_AssemblerBase *pAsm)
         case FRAG_ATTRIB_TEX5:
         case FRAG_ATTRIB_TEX6:
         case FRAG_ATTRIB_TEX7:
+            bValidTexCoord = GL_TRUE;
+
             pAsm->S[0].src.reg   = pAsm->uiFP_AttributeMap[pILInst->SrcReg[0].Index];
             pAsm->S[0].src.rtype = SRC_REG_INPUT;
         }
         break;
     }
 
-    setaddrmode_PVSSRC(&(pAsm->S[0].src), ADDR_ABSOLUTE);
+    if(GL_TRUE == bValidTexCoord)
+    { 
+        setaddrmode_PVSSRC(&(pAsm->S[0].src), ADDR_ABSOLUTE);
+    }
+    else
+    {
+        radeon_error("Invalid source texcoord for TEX instruction\n");
+        return GL_FALSE;
+    }
 
     pAsm->S[0].src.swizzlex = pILInst->SrcReg[0].Swizzle & 0x7;
     pAsm->S[0].src.swizzley = (pILInst->SrcReg[0].Swizzle >> 3) & 0x7;
@@ -1193,7 +1201,7 @@ GLboolean tex_src(r700_AssemblerBase *pAsm)
     pAsm->S[0].src.negy = (pILInst->SrcReg[0].Negate >> 1) & 0x1;
     pAsm->S[0].src.negz = (pILInst->SrcReg[0].Negate >> 2) & 0x1;
     pAsm->S[0].src.negw = (pILInst->SrcReg[0].Negate >> 3) & 0x1;
-
+     
     return GL_TRUE;
 }
 
@@ -3354,19 +3362,39 @@ GLboolean assemble_STP(r700_AssemblerBase *pAsm)
 {
     return GL_TRUE;
 }
-
-GLboolean assemble_TEX(r700_AssemblerBase *pAsm)
+ 
+GLboolean assemble_TEX(r700_AssemblerBase *pAsm) 
 {
-    switch (pAsm->pILInst[pAsm->uiCurInst].Opcode)
+    GLboolean src_const;
+
+    switch (pAsm->pILInst[pAsm->uiCurInst].SrcReg[0].File)
+    {
+    case PROGRAM_CONSTANT:
+    case PROGRAM_LOCAL_PARAM:
+    case PROGRAM_ENV_PARAM:
+    case PROGRAM_STATE_VAR:
+        src_const = GL_TRUE;
+    case PROGRAM_TEMPORARY:
+    case PROGRAM_INPUT:
+        src_const = GL_FALSE;
+    }
+
+    if (GL_TRUE == src_const) 
+    {
+        radeon_error("TODO: Texture coordinates from a constant register not supported.\n");
+        return GL_FALSE;
+    }
+
+    switch (pAsm->pILInst[pAsm->uiCurInst].Opcode) 
     {
         case OPCODE_TEX:
-            pAsm->D.dst.opcode = SQ_TEX_INST_SAMPLE;
+            pAsm->D.dst.opcode = SQ_TEX_INST_SAMPLE;            
             break;
-        case OPCODE_TXB:
+        case OPCODE_TXB:            
             radeon_error("do not support TXB yet\n");
             return GL_FALSE;
             break;
-        case OPCODE_TXP:
+        case OPCODE_TXP:            
             /* TODO : tex proj version : divid first 3 components by 4th */ 
             pAsm->D.dst.opcode = SQ_TEX_INST_SAMPLE;
             break;
@@ -3390,13 +3418,13 @@ GLboolean assemble_TEX(r700_AssemblerBase *pAsm)
     {
         return GL_FALSE;
     }
-
+ 
     if( GL_FALSE == tex_src(pAsm) )
     {
         return GL_FALSE;
     }
 
-    if ( GL_FALSE == next_ins(pAsm) )
+    if ( GL_FALSE == next_ins(pAsm) ) 
     {
         return GL_FALSE;
     }
-- 
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