1 files changed, 49 insertions, 0 deletions
diff --git a/platform/macos/src/MGLOpenGLLayer.mm b/platform/macos/src/MGLOpenGLLayer.mm
new file mode 100644
index 0000000000..e8fa521351
--- /dev/null
+++ b/platform/macos/src/MGLOpenGLLayer.mm
@@ -0,0 +1,49 @@
+#import "MGLOpenGLLayer.h"
+
+#import "MGLMapView_Private.h"
+
+#import <mbgl/gl/gl.hpp>
+
+@implementation MGLOpenGLLayer
+
+- (MGLMapView *)mapView {
+    return (MGLMapView *)super.view;
+}
+
+//- (BOOL)isAsynchronous {
+//    return YES;
+//}
+
+- (BOOL)needsDisplayOnBoundsChange {
+    return YES;
+}
+
+- (CGRect)frame {
+    return self.view.bounds;
+}
+
+- (NSOpenGLPixelFormat *)openGLPixelFormatForDisplayMask:(uint32_t)mask {
+    NSOpenGLPixelFormatAttribute pfas[] = {
+        NSOpenGLPFAAccelerated,
+        NSOpenGLPFAClosestPolicy,
+        NSOpenGLPFAAccumSize, 32,
+        NSOpenGLPFAColorSize, 24,
+        NSOpenGLPFAAlphaSize, 8,
+        NSOpenGLPFADepthSize, 16,
+        NSOpenGLPFAStencilSize, 8,
+        NSOpenGLPFAScreenMask, mask,
+        0
+    };
+    return [[NSOpenGLPixelFormat alloc] initWithAttributes:pfas];
+}
+
+- (BOOL)canDrawInOpenGLContext:(__unused NSOpenGLContext *)context pixelFormat:(__unused NSOpenGLPixelFormat *)pixelFormat forLayerTime:(__unused CFTimeInterval)t displayTime:(__unused const CVTimeStamp *)ts {
+    return !self.mapView.dormant;
+}
+
+- (void)drawInOpenGLContext:(NSOpenGLContext *)context pixelFormat:(NSOpenGLPixelFormat *)pixelFormat forLayerTime:(CFTimeInterval)t displayTime:(const CVTimeStamp *)ts {
+    [self.mapView renderSync];
+    [super drawInOpenGLContext:context pixelFormat:pixelFormat forLayerTime:t displayTime:ts];
+}
+
+@end