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-rw-r--r--slideshow/source/engine/OGLTrans/mac/aquaOpenGLView.m4
1 files changed, 4 insertions, 0 deletions
diff --git a/slideshow/source/engine/OGLTrans/mac/aquaOpenGLView.m b/slideshow/source/engine/OGLTrans/mac/aquaOpenGLView.m
index 44e4f6dde309..64af8150aed5 100644
--- a/slideshow/source/engine/OGLTrans/mac/aquaOpenGLView.m
+++ b/slideshow/source/engine/OGLTrans/mac/aquaOpenGLView.m
@@ -81,7 +81,11 @@ typedef int NSColorRenderingIntent;
- (void)prepareOpenGL
{
// for overriding to initialize OpenGL state, occurs after context creation
+#if MAC_OS_X_VERSION_MIN_REQUIRED >= 1050
+ GLint swapInt = 1;
+#else
long swapInt = 1;
+#endif
[[self openGLContext] setValues:&swapInt forParameter:NSOpenGLCPSwapInterval]; // set to vbl sync