+ int theDepth = 0;
+
+#if MAC_OS_X_VERSION_MAX_ALLOWED >= 1060
+ if ( UMAGetSystemVersion() >= 0x1060 )
+ {
+ CGDisplayModeRef currentMode = CGDisplayCopyDisplayMode(kCGDirectMainDisplay);
+ CFStringRef encoding = CGDisplayModeCopyPixelEncoding(currentMode);
+
+ if(CFStringCompare(encoding, CFSTR(IO32BitDirectPixels), kCFCompareCaseInsensitive) == kCFCompareEqualTo)
+ theDepth = 32;
+ else if(CFStringCompare(encoding, CFSTR(IO16BitDirectPixels), kCFCompareCaseInsensitive) == kCFCompareEqualTo)
+ theDepth = 16;
+ else if(CFStringCompare(encoding, CFSTR(IO8BitIndexedPixels), kCFCompareCaseInsensitive) == kCFCompareEqualTo)
+ theDepth = 8;
+ else
+ theDepth = 32; // some reasonable default
+
+ CFRelease(encoding);
+ }
+ else
+#endif
+ {
+#if MAC_OS_X_VERSION_MIN_REQUIRED < 1060
+ theDepth = (int) CGDisplayBitsPerPixel(CGMainDisplayID());
+#endif
+ }