cocos2dx 3.x 在mac上系统字花了、显示异常

我这边的环境的是 cocos2dx 3.13 macos10.15 catalina
表现为：

对照这个PR 做修改即可：
https://github.com/cocos2d/cocos2d-x/pull/20124/files

//cocos/platform/mac/CCDevice-mac.mm 按照上面的变更图修改即可


         NSSize realDimensions;
 
         if (overflow == 2) {
         if (overflow == 2)
             realDimensions = _calculateRealSizeForString(&stringWithAttributes, font, dimensions, enableWrap);
         } else {
         else
             realDimensions = _calculateStringSize(stringWithAttributes, font, &dimensions, enableWrap, overflow);
         }
         
 
         // Mac crashes if the width or height is 0
         CC_BREAK_IF(realDimensions.width <= 0 || realDimensions.height <= 0);
 
 
         if(dimensions.width <= 0.f) {
         if(dimensions.width <= 0.f)
             dimensions.width = realDimensions.width;
         }
         if (dimensions.height <= 0.f) {
         if (dimensions.height <= 0.f)
             dimensions.height = realDimensions.height;
         }
       
         
 
         //Alignment
         CGFloat xPadding = FontUtils::_calculateTextDrawStartWidth(align, realDimensions, dimensions);
         
         CGFloat yPadding = _calculateTextDrawStartHeight(align, realDimensions, dimensions);
 
         NSInteger POTWide = dimensions.width;
         NSInteger POTHigh = dimensions.height;
         NSRect textRect = NSMakeRect(xPadding, POTHigh - dimensions.height + yPadding,
                                      realDimensions.width, realDimensions.height);
 
         
         [[NSGraphicsContext currentContext] setShouldAntialias:NO];
         
         NSImage *image = [[NSImage alloc] initWithSize:NSMakeSize(POTWide, POTHigh)];
         [image lockFocus];
         // patch for mac retina display and lableTTF
         [[NSAffineTransform transform] set];
         NSBitmapImageRep* offscreenRep = [[[NSBitmapImageRep alloc]
             initWithBitmapDataPlanes:NULL
             pixelsWide:POTWide
             pixelsHigh:POTHigh
             bitsPerSample:8
             samplesPerPixel:4
             hasAlpha:YES
             isPlanar:NO
             colorSpaceName:NSDeviceRGBColorSpace
             bitmapFormat: 0
             bytesPerRow:4 * POTWide
             bitsPerPixel:32] autorelease];
 
         NSGraphicsContext* g = [NSGraphicsContext graphicsContextWithBitmapImageRep:offscreenRep];
         [NSGraphicsContext saveGraphicsState];
         [NSGraphicsContext setCurrentContext:g];
         [stringWithAttributes drawInRect:textRect];
         NSBitmapImageRep *bitmap = [[NSBitmapImageRep alloc] initWithFocusedViewRect:NSMakeRect (0.0f, 0.0f, POTWide, POTHigh)];
         [image unlockFocus];
         [NSGraphicsContext restoreGraphicsState];
 
         auto data = (unsigned char*) [bitmap bitmapData];  //Use the same buffer to improve the performance.
         auto data = (unsigned char*) [offscreenRep bitmapData];  //Use the same buffer to improve the performance.
 
         NSUInteger textureSize = POTWide * POTHigh * 4;
         auto dataNew = (unsigned char*)malloc(sizeof(unsigned char) * textureSize);
 @@ -333,8 +335,6 @@ static bool _initWithString(const char * text, Device::TextAlign align, const ch
             info->isPremultipliedAlpha = true;
             ret = true;
         }
         [bitmap release];
         [image release];
     } while (0);
     return ret;
 }