[Mesa-dev] [PATCH 3/3] ir_to_mesa: Add support for conditional discards.

[Kenneth Graunke]

From: Marek Olšák <maraeo at gmail.com>

Signed-off-by: Marek Olšák <maraeo at gmail.com>
Signed-off-by: Kenneth Graunke <kenneth at whitecape.org>
---
 src/mesa/program/ir_to_mesa.cpp |    9 +++++++--
 1 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/src/mesa/program/ir_to_mesa.cpp b/src/mesa/program/ir_to_mesa.cpp
index 6e9f873..d9d86b6 100644
--- a/src/mesa/program/ir_to_mesa.cpp
+++ b/src/mesa/program/ir_to_mesa.cpp
@@ -2166,9 +2166,14 @@ ir_to_mesa_visitor::visit(ir_discard *ir)
 {
    struct gl_fragment_program *fp = (struct gl_fragment_program *)this->prog;
 
-   assert(ir->condition == NULL); /* FINISHME */
+   if (ir->condition) {
+      ir->condition->accept(this);
+      this->result.negate = ~this->result.negate;
+      ir_to_mesa_emit_op1(ir, OPCODE_KIL, ir_to_mesa_undef_dst, this->result);
+   } else {
+      ir_to_mesa_emit_op0(ir, OPCODE_KIL_NV);
+   }
 
-   ir_to_mesa_emit_op0(ir, OPCODE_KIL_NV);
    fp->UsesKill = GL_TRUE;
 }
 
-- 
1.7.3.2