gallium: add a temporary array register file

like normal temporaries, but allows to define a number of distinct
arrays, all of which make it explicit that they contain /indexable/
registers.
as a side-effect we're adding support for multi-dimensional destination
registers.
The whole thing looks like this:
DCL TEMPX[0][0..128]  # 0 array with 128 registers

ADD TEMPX[0][0], IN[0], IMM[0]
ADD TEMPX[0][1], IN[0], IMM[0]
ABS OUT[0], TEMPX[0][TEMP[0]]

1 files changed, 14 insertions, 4 deletions

diff --git a/src/gallium/auxiliary/tgsi/tgsi_sanity.c b/src/gallium/auxiliary/tgsi/tgsi_sanity.c
index fa6a1a36dd..97148dbe23 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_sanity.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_sanity.c
@@ -90,9 +90,18 @@ static void
 scan_register_dst(scan_register *reg,
                   struct tgsi_full_dst_register *dst)
 {
-   fill_scan_register1d(reg,
-                        dst->Register.File,
-                        dst->Register.Index);
+   if (dst->Register.Dimension) {
+      /*FIXME: right now we don't support indirect
+       * multidimensional addressing */
+      fill_scan_register2d(reg,
+                           dst->Register.File,
+                           dst->Register.Index,
+                           dst->Dimension.Index);
+   } else {
+      fill_scan_register1d(reg,
+                           dst->Register.File,
+                           dst->Register.Index);
+   }
 }
 
 static void
@@ -236,7 +245,8 @@ static const char *file_names[TGSI_FILE_COUNT] =
    "IMM",
    "PRED",
    "SV",
-   "IMMX"
+   "IMMX",
+   "TEMPX"
 };
 
 static boolean