Mesa (7.9): i965: Don't write mrf assignment for pointsize output

[Ian Romanick]

Module: Mesa
Branch: 7.9
Commit: 6b96b002c8fc8fadc8fe544d6bff0403604e5755
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=6b96b002c8fc8fadc8fe544d6bff0403604e5755

Author: Kristian Høgsberg <krh at bitplanet.net>
Date:   Wed Nov 24 10:12:20 2010 -0500

i965: Don't write mrf assignment for pointsize output

https://bugs.freedesktop.org/show_bug.cgi?id=31894
(cherry picked from commit a889f9ee5cccee031c1090a6ef92cba894b1d77c)

---

 src/mesa/drivers/dri/i965/brw_vs_emit.c |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_vs_emit.c b/src/mesa/drivers/dri/i965/brw_vs_emit.c
index 8ac979d..6f9b589 100644
--- a/src/mesa/drivers/dri/i965/brw_vs_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_vs_emit.c
@@ -272,7 +272,6 @@ static void brw_vs_alloc_regs( struct brw_vs_compile *c )
 	 else if (i == VERT_RESULT_PSIZ) {
 	    c->regs[PROGRAM_OUTPUT][i] = brw_vec8_grf(reg, 0);
 	    reg++;
-	    mrf++;		/* just a placeholder?  XXX fix later stages & remove this */
 	 }
 	 else {
 	    /* Two restrictions on our compute-to-MRF here.  The
@@ -1488,6 +1487,8 @@ static void emit_vertex_write( struct brw_vs_compile *c)
 	 break;
       if (!(c->prog_data.outputs_written & BITFIELD64_BIT(i)))
 	 continue;
+      if (i == VERT_RESULT_PSIZ)
+	 continue;
 
       if (i >= VERT_RESULT_TEX0 &&
 	  c->regs[PROGRAM_OUTPUT][i].file == BRW_GENERAL_REGISTER_FILE) {