From 9b075cb9fa9eb6a95d0816283ef01ae72dafa680 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Tue, 31 Aug 2010 13:02:59 -0700
Subject: ir_to_mesa: When emitting a pixel kill, flag that we did so.

Both i965 and swrast rely on UsesKill to determine whether to do early
depth writes.  Fixes glsl-fs-discard-02.

Bug #29835.
---
 src/mesa/program/ir_to_mesa.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/mesa/program/ir_to_mesa.cpp b/src/mesa/program/ir_to_mesa.cpp
index 8f39a225af5..57458d02812 100644
--- a/src/mesa/program/ir_to_mesa.cpp
+++ b/src/mesa/program/ir_to_mesa.cpp
@@ -2041,9 +2041,12 @@ ir_to_mesa_visitor::visit(ir_return *ir)
 void
 ir_to_mesa_visitor::visit(ir_discard *ir)
 {
+   struct gl_fragment_program *fp = (struct gl_fragment_program *)this->prog;
+
    assert(ir->condition == NULL); /* FINISHME */
 
    ir_to_mesa_emit_op0(ir, OPCODE_KIL_NV);
+   fp->UsesKill = GL_TRUE;
 }
 
 void
-- 
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