Mesa (master): i965: Add support for DP2 in the VS.

[Eric Anholt]

Module: Mesa
Branch: master
Commit: 147ca9f3fc107b58bd6e1504c997af82a37de5ec
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=147ca9f3fc107b58bd6e1504c997af82a37de5ec

Author: Eric Anholt <eric at anholt.net>
Date:   Tue Aug 17 13:59:08 2010 -0700

i965: Add support for DP2 in the VS.

Fixes glsl-vs-dot-vec2.

---

 src/mesa/drivers/dri/i965/brw_vs_emit.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_vs_emit.c b/src/mesa/drivers/dri/i965/brw_vs_emit.c
index fab6b4f..7b946eb 100644
--- a/src/mesa/drivers/dri/i965/brw_vs_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_vs_emit.c
@@ -47,6 +47,7 @@ brw_vs_arg_can_be_immediate(enum prog_opcode opcode, int arg)
       [OPCODE_MOV] = 1,
       [OPCODE_ADD] = 2,
       [OPCODE_CMP] = 3,
+      [OPCODE_DP2] = 2,
       [OPCODE_DP3] = 2,
       [OPCODE_DP4] = 2,
       [OPCODE_DPH] = 2,
@@ -1654,6 +1655,9 @@ void brw_vs_emit(struct brw_vs_compile *c )
       case OPCODE_COS:
 	 emit_math1(c, BRW_MATH_FUNCTION_COS, dst, args[0], BRW_MATH_PRECISION_FULL);
 	 break;
+      case OPCODE_DP2:
+	 brw_DP2(p, dst, args[0], args[1]);
+	 break;
       case OPCODE_DP3:
 	 brw_DP3(p, dst, args[0], args[1]);
 	 break;