i965: Don't write mrf assignment for pointsize output

https://bugs.freedesktop.org/show_bug.cgi?id=31894

diff --git a/src/mesa/drivers/dri/i965/brw_vs_emit.c b/src/mesa/drivers/dri/i965/brw_vs_emit.c
index a13c3ca..89e4caf 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_vs_emit.c
+++ b/src/mesa/drivers/dri/i965/brw_vs_emit.c
@@ -281,7 +281,6 @@ 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
@@ -1603,6 +1602,8 @@ 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) {