Setting MaxIfDepth to UINT_MAX effectively means "don't lower anything."
Explicitly checking for this common case allows us to avoid walking the
IR, computing nesting levels, and so on.
Signed-off-by: Kenneth Graunke <kenn...@whitecape.org>
Cc: Bryan Cain <bryanca...@gmail.com>
Cc: Ian Romanick <i...@freedesktop.org>
---
src/glsl/lower_if_to_cond_assign.cpp | 3 +++
1 files changed, 3 insertions(+), 0 deletions(-)
diff --git a/src/glsl/lower_if_to_cond_assign.cpp
b/src/glsl/lower_if_to_cond_assign.cpp
index 7b89a15..2c5d561 100644
--- a/src/glsl/lower_if_to_cond_assign.cpp
+++ b/src/glsl/lower_if_to_cond_assign.cpp
@@ -79,6 +79,9 @@ public:
bool
lower_if_to_cond_assign(exec_list *instructions, unsigned max_depth)
{
+ if (max_depth == UINT_MAX)
+ return false;
+
ir_if_to_cond_assign_visitor v(max_depth);
visit_list_elements(&v, instructions);
--
1.7.7
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