MOD_TO_FRACT was designed to lower the GLSL 1.20 mod() function, which
operates on floating point values. However, we also use ir_binop_mod
for GLSL 1.30's % operator, which operates on integers.
For now, make MOD_TO_FRACT only apply to floating-point mod operations.
In the future, we may want to add a lowering pass for integer-based mod.
Signed-off-by: Kenneth Graunke <kenn...@whitecape.org>
---
src/glsl/lower_instructions.cpp | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/src/glsl/lower_instructions.cpp b/src/glsl/lower_instructions.cpp
index 94b8c4a..806f863 100644
--- a/src/glsl/lower_instructions.cpp
+++ b/src/glsl/lower_instructions.cpp
@@ -276,7 +276,7 @@ lower_instructions_visitor::visit_leave(ir_expression *ir)
break;
case ir_binop_mod:
- if (lowering(MOD_TO_FRACT))
+ if (lowering(MOD_TO_FRACT) && ir->type->is_float())
mod_to_fract(ir);
break;
--
1.7.5.4
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