From baa7ff47d548cdcc1ea68657ee1b0500f78041be Mon Sep 17 00:00:00 2001
From: Brian Paul <brianp@vmware.com>
Date: Fri, 10 Jul 2009 13:07:16 -0600
Subject: tgis: implement indirect addressing for destination registers

Includes the TGSI interpreter, but not the SSE/PPC/etc code generators.
---
 src/gallium/auxiliary/tgsi/tgsi_build.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

(limited to 'src/gallium/auxiliary/tgsi/tgsi_build.c')

diff --git a/src/gallium/auxiliary/tgsi/tgsi_build.c b/src/gallium/auxiliary/tgsi/tgsi_build.c
index a1891a140a..18c448a2c7 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_build.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_build.c
@@ -584,6 +584,7 @@ tgsi_build_full_instruction(
       *dst_register = tgsi_build_dst_register(
          reg->DstRegister.File,
          reg->DstRegister.WriteMask,
+         reg->DstRegister.Indirect,
          reg->DstRegister.Index,
          instruction,
          header );
@@ -631,6 +632,28 @@ tgsi_build_full_instruction(
             header );
          prev_token = (struct tgsi_token  *) dst_register_ext_modulate;
       }
+
+      if( reg->DstRegister.Indirect ) {
+         struct tgsi_src_register *ind;
+
+         if( maxsize <= size )
+            return 0;
+         ind = (struct tgsi_src_register *) &tokens[size];
+         size++;
+
+         *ind = tgsi_build_src_register(
+            reg->DstRegisterInd.File,
+            reg->DstRegisterInd.SwizzleX,
+            reg->DstRegisterInd.SwizzleY,
+            reg->DstRegisterInd.SwizzleZ,
+            reg->DstRegisterInd.SwizzleW,
+            reg->DstRegisterInd.Negate,
+            reg->DstRegisterInd.Indirect,
+            reg->DstRegisterInd.Dimension,
+            reg->DstRegisterInd.Index,
+            instruction,
+            header );
+      }
    }
 
    for( i = 0;  i < full_inst->Instruction.NumSrcRegs; i++ ) {
@@ -1194,6 +1217,7 @@ struct tgsi_dst_register
 tgsi_build_dst_register(
    unsigned file,
    unsigned mask,
+   unsigned indirect,
    int index,
    struct tgsi_instruction *instruction,
    struct tgsi_header *header )
@@ -1208,6 +1232,7 @@ tgsi_build_dst_register(
    dst_register.File = file;
    dst_register.WriteMask = mask;
    dst_register.Index = index;
+   dst_register.Indirect = indirect;
 
    instruction_grow( instruction, header );
 
@@ -1220,6 +1245,7 @@ tgsi_default_full_dst_register( void )
    struct tgsi_full_dst_register full_dst_register;
 
    full_dst_register.DstRegister = tgsi_default_dst_register();
+   full_dst_register.DstRegisterInd = tgsi_default_src_register();
    full_dst_register.DstRegisterExtConcode =
       tgsi_default_dst_register_ext_concode();
    full_dst_register.DstRegisterExtModulate =
-- 
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