Mesa (gallium-0.1): gallium: implement TGSI_OPCODE_DP2A, add sqrt to NRM3/ NRM4

[Michał Król]

Module: Mesa
Branch: gallium-0.1
Commit: 49c40b10c72e64977971ccb96abfc8767ed4c6ea
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=49c40b10c72e64977971ccb96abfc8767ed4c6ea

Author: Brian Paul <brian.paul at tungstengraphics.com>
Date:   Fri Nov  7 13:02:43 2008 -0700

gallium: implement TGSI_OPCODE_DP2A, add sqrt to NRM3/NRM4

---

 src/gallium/auxiliary/tgsi/tgsi_exec.c |   22 +++++++++++++++++++---
 1 files changed, 19 insertions(+), 3 deletions(-)

diff --git a/src/gallium/auxiliary/tgsi/tgsi_exec.c b/src/gallium/auxiliary/tgsi/tgsi_exec.c
index d55c337..f98b66d 100644
--- a/src/gallium/auxiliary/tgsi/tgsi_exec.c
+++ b/src/gallium/auxiliary/tgsi/tgsi_exec.c
@@ -2041,7 +2041,21 @@ exec_instruction(
 
    case TGSI_OPCODE_DOT2ADD:
       /* TGSI_OPCODE_DP2A */
-      assert (0);
+      FETCH( &r[0], 0, CHAN_X );
+      FETCH( &r[1], 1, CHAN_X );
+      micro_mul( &r[0], &r[0], &r[1] );
+
+      FETCH( &r[1], 0, CHAN_Y );
+      FETCH( &r[2], 1, CHAN_Y );
+      micro_mul( &r[1], &r[1], &r[2] );
+      micro_add( &r[0], &r[0], &r[1] );
+
+      FETCH( &r[2], 2, CHAN_X );
+      micro_add( &r[0], &r[0], &r[2] );
+
+      FOR_EACH_ENABLED_CHANNEL( *inst, chan_index ) {
+         STORE( &r[0], 0, chan_index );
+      }
       break;
 
    case TGSI_OPCODE_INDEX:
@@ -2488,7 +2502,8 @@ exec_instruction(
          micro_mul( &dot, &r[2], &r[2] );
          micro_add( &tmp, &tmp, &dot );
 
-         /* tmp = 1 / tmp */
+         /* tmp = 1 / sqrt(tmp) */
+         micro_sqrt( &tmp, &tmp );
          micro_div( &tmp, &mach->Temps[TEMP_1_I].xyzw[TEMP_1_C], &tmp );
 
          /* note: w channel is undefined */
@@ -2521,7 +2536,8 @@ exec_instruction(
          micro_mul( &dot, &r[3], &r[3] );
          micro_add( &tmp, &tmp, &dot );
 
-         /* tmp = 1 / tmp */
+         /* tmp = 1 / sqrt(tmp) */
+         micro_sqrt( &tmp, &tmp );
          micro_div( &tmp, &mach->Temps[TEMP_1_I].xyzw[TEMP_1_C], &tmp );
 
          FOR_EACH_ENABLED_CHANNEL( *inst, chan_index ) {