tgsi: Parse destination operand modulate modifier.

src/gallium/auxiliary/tgsi/util/tgsi_dump.c

@@ -539,6 +539,17 @@ static const char *TGSI_MODULATES[] =
    "MODULATE_EIGHTH"
 };
 
+static const char *TGSI_MODULATES_SHORT[TGSI_MODULATE_COUNT] =
+{
+   "",
+   "_2X",
+   "_4X",
+   "_8X",
+   "_D2",
+   "_D4",
+   "_D8"
+};
+
 void
 tgsi_dump_declaration(
    const struct tgsi_full_declaration  *decl )
@@ -736,30 +747,7 @@ tgsi_dump_instruction(
       SID( dst->DstRegister.Index );
       CHR( ']' );
 
-      switch (dst->DstRegisterExtModulate.Modulate) {
-      case TGSI_MODULATE_1X:
-         break;
-      case TGSI_MODULATE_2X:
-         TXT( "_2X" );
-         break;
-      case TGSI_MODULATE_4X:
-         TXT( "_4X" );
-         break;
-      case TGSI_MODULATE_8X:
-         TXT( "_8X" );
-         break;
-      case TGSI_MODULATE_HALF:
-         TXT( "_D2" );
-         break;
-      case TGSI_MODULATE_QUARTER:
-         TXT( "_D4" );
-         break;
-      case TGSI_MODULATE_EIGHTH:
-         TXT( "_D8" );
-         break;
-      default:
-         assert( 0 );
-      }
+      ENM( dst->DstRegisterExtModulate.Modulate, TGSI_MODULATES_SHORT );
 
       if( dst->DstRegister.WriteMask != TGSI_WRITEMASK_XYZW ) {
          CHR( '.' );

src/gallium/auxiliary/tgsi/util/tgsi_text.c

@@ -368,6 +368,17 @@ parse_register_dcl(
    return TRUE;
 }
 
+static const char *modulate_names[TGSI_MODULATE_COUNT] =
+{
+   "_1X",
+   "_2X",
+   "_4X",
+   "_8X",
+   "_D2",
+   "_D4",
+   "_D8"
+};
+
 static boolean
 parse_dst_operand(
    struct translate_ctx *ctx,
@@ -376,11 +387,30 @@ parse_dst_operand(
    uint file;
    uint index;
    uint writemask;
+   const char *cur;
 
    if (!parse_register( ctx, &file, &index ))
       return FALSE;
+
+   cur = ctx->cur;
+   eat_opt_white( &cur );
+   if (*cur == '_') {
+      uint i;
+
+      for (i = 0; i < TGSI_MODULATE_COUNT; i++) {
+         if (str_match_no_case( &cur, modulate_names[i] )) {
+            if (!is_digit_alpha_underscore( cur )) {
+               dst->DstRegisterExtModulate.Modulate = i;
+               ctx->cur = cur;
+               break;
+            }
+         }
+      }
+   }
+
    if (!parse_opt_writemask( ctx, &writemask ))
       return FALSE;
+
    dst->DstRegister.File = file;
    dst->DstRegister.Index = index;
    dst->DstRegister.WriteMask = writemask;

src/gallium/include/pipe/p_shader_tokens.h

@@ -743,6 +743,7 @@ struct tgsi_dst_register_ext_concode
 #define TGSI_MODULATE_HALF      4
 #define TGSI_MODULATE_QUARTER   5
 #define TGSI_MODULATE_EIGHTH    6
+#define TGSI_MODULATE_COUNT     7
 
 struct tgsi_dst_register_ext_modulate
 {