Mesa (gallium-resources): Revert "i965: Do FS SLT, SGT, and friends using CMP, SEL instead of CMP, MOV, MOV."

[Keith Whitwell]

Module: Mesa
Branch: gallium-resources
Commit: ba208604ea8bc069be583732a4c59a47e4a7b280
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=ba208604ea8bc069be583732a4c59a47e4a7b280

Author: Eric Anholt <eric at anholt.net>
Date:   Tue Mar 16 11:22:29 2010 -0700

Revert "i965: Do FS SLT, SGT, and friends using CMP, SEL instead of CMP, MOV, MOV."

This reverts commit 46450c1f3f93bf4dc96696fc7e0f0eb808d9c08a.  I was
wrong about null reg behavior -- it reads undefined, not 0.  And
they're not kidding.

---

 src/mesa/drivers/dri/i965/brw_wm_emit.c |    7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_wm_emit.c b/src/mesa/drivers/dri/i965/brw_wm_emit.c
index 05e464d..1869fd0 100644
--- a/src/mesa/drivers/dri/i965/brw_wm_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_wm_emit.c
@@ -545,8 +545,11 @@ void emit_sop(struct brw_compile *p,
    for (i = 0; i < 4; i++) {
       if (mask & (1<<i)) {	
 	 brw_push_insn_state(p);
-	 brw_CMP(p, brw_null_reg(), cond, arg1[i], arg0[i]);
-	 brw_SEL(p, dst[i], brw_null_reg(), brw_imm_f(1.0));
+	 brw_CMP(p, brw_null_reg(), cond, arg0[i], arg1[i]);
+	 brw_set_predicate_control(p, BRW_PREDICATE_NONE);
+	 brw_MOV(p, dst[i], brw_imm_f(0));
+	 brw_set_predicate_control(p, BRW_PREDICATE_NORMAL);
+	 brw_MOV(p, dst[i], brw_imm_f(1.0));
 	 brw_pop_insn_state(p);
       }
    }