From 14a0328d4b21a2783a43932d2e4ed7ee75d79685 Mon Sep 17 00:00:00 2001
From: José Fonseca <jfonseca@vmware.com>
Date: Mon, 3 May 2010 12:13:54 +0100
Subject: tgsi: Parse and dump predicates.

---
 src/gallium/auxiliary/tgsi/tgsi_dump.c | 24 ++++++++++++++++++++
 src/gallium/auxiliary/tgsi/tgsi_text.c | 40 +++++++++++++++++++++++++++++++++-
 2 files changed, 63 insertions(+), 1 deletion(-)

(limited to 'src/gallium/auxiliary/tgsi')

diff --git a/src/gallium/auxiliary/tgsi/tgsi_dump.c b/src/gallium/auxiliary/tgsi/tgsi_dump.c
index de54a49ec2..1ad183b8dd 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_dump.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_dump.c
@@ -493,6 +493,30 @@ iter_instruction(
       TXT( "  " );
    ctx->indent += info->post_indent;
    
+   if (inst->Instruction.Predicate) {
+      CHR( '(' );
+
+      if (inst->Predicate.Negate)
+         CHR( '!' );
+
+      TXT( "PRED[" );
+      SID( inst->Predicate.Index );
+      CHR( ']' );
+
+      if (inst->Predicate.SwizzleX != TGSI_SWIZZLE_X ||
+          inst->Predicate.SwizzleY != TGSI_SWIZZLE_Y ||
+          inst->Predicate.SwizzleZ != TGSI_SWIZZLE_Z ||
+          inst->Predicate.SwizzleW != TGSI_SWIZZLE_W) {
+         CHR( '.' );
+         ENM( inst->Predicate.SwizzleX, swizzle_names );
+         ENM( inst->Predicate.SwizzleY, swizzle_names );
+         ENM( inst->Predicate.SwizzleZ, swizzle_names );
+         ENM( inst->Predicate.SwizzleW, swizzle_names );
+      }
+
+      TXT( ") " );
+   }
+
    TXT( info->mnemonic );
 
    switch (inst->Instruction.Saturate) {
diff --git a/src/gallium/auxiliary/tgsi/tgsi_text.c b/src/gallium/auxiliary/tgsi/tgsi_text.c
index f3b17833b5..71a0d96331 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_text.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_text.c
@@ -815,6 +815,45 @@ parse_instruction(
    struct tgsi_full_instruction inst;
    uint advance;
 
+   inst = tgsi_default_full_instruction();
+
+   /* Parse predicate.
+    */
+   eat_opt_white( &ctx->cur );
+   if (*ctx->cur == '(') {
+      uint file;
+      int index;
+      uint swizzle[4];
+      boolean parsed_swizzle;
+
+      inst.Instruction.Predicate = 1;
+
+      ctx->cur++;
+      if (*ctx->cur == '!') {
+         ctx->cur++;
+         inst.Predicate.Negate = 1;
+      }
+
+      if (!parse_register_dst( ctx, &file, &index ))
+         return FALSE;
+
+      if (parse_optional_swizzle( ctx, swizzle, &parsed_swizzle )) {
+         if (parsed_swizzle) {
+            inst.Predicate.SwizzleX = swizzle[0];
+            inst.Predicate.SwizzleY = swizzle[1];
+            inst.Predicate.SwizzleZ = swizzle[2];
+            inst.Predicate.SwizzleW = swizzle[3];
+         }
+      }
+
+      if (*ctx->cur != ')') {
+         report_error( ctx, "Expected `)'" );
+         return FALSE;
+      }
+
+      ctx->cur++;
+   }
+
    /* Parse instruction name.
     */
    eat_opt_white( &ctx->cur );
@@ -848,7 +887,6 @@ parse_instruction(
       return FALSE;
    }
 
-   inst = tgsi_default_full_instruction();
    inst.Instruction.Opcode = i;
    inst.Instruction.Saturate = saturate;
    inst.Instruction.NumDstRegs = info->num_dst;
-- 
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