1 files changed, 3 insertions, 3 deletions
diff --git a/mesalib/src/glsl/builtin_functions.cpp b/mesalib/src/glsl/builtin_functions.cpp
index a326f4358..704458115 100755
--- a/mesalib/src/glsl/builtin_functions.cpp
+++ b/mesalib/src/glsl/builtin_functions.cpp
@@ -64,9 +64,9 @@
 
 #define f(x) join(x)
 #define join(x) x ## f
-#define M_PIf f(M_PI)
-#define M_PI_2f f(M_PI_2)
-#define M_PI_4f f(M_PI_4)
+#define M_PIf ((float)M_PI)
+#define M_PI_2f (M_PIf/2.0f)
+#define M_PI_4f (M_PIf/4.0f)
 
 using namespace ir_builder;