[Mesa-dev] [PATCH v4 07/10] st/glsl_to_tgsi: don't optimize mul+add to mad if expression is precise

[Karol Herbst]

Signed-off-by: Karol Herbst <karolherbst at gmail.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle at amd.com>
---
 src/mesa/state_tracker/st_glsl_to_tgsi.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
index 2d183004f0..38a8b8667c 100644
--- a/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
+++ b/src/mesa/state_tracker/st_glsl_to_tgsi.cpp
@@ -1557,7 +1557,7 @@ glsl_to_tgsi_visitor::visit(ir_expression *ir)
 
    /* Quick peephole: Emit MAD(a, b, c) instead of ADD(MUL(a, b), c)
     */
-   if (ir->operation == ir_binop_add) {
+   if (!this->precise && ir->operation == ir_binop_add) {
       if (try_emit_mad(ir, 1))
          return;
       if (try_emit_mad(ir, 0))
-- 
2.13.1