Fixed memory leak when closing window with Metal rendering.

skiko/src/jvmMain/kotlin/org/jetbrains/skiko/context/MetalContextHandler.kt

@@ -6,6 +6,8 @@ import org.jetbrains.skija.SurfaceColorFormat
 import org.jetbrains.skija.SurfaceOrigin
 import org.jetbrains.skiko.SkiaLayer
 import org.jetbrains.skiko.redrawer.MetalRedrawer
+import org.jetbrains.skija.impl.Native
+import org.jetbrains.skiko.destroyContext
 
 internal class MetalContextHandler(layer: SkiaLayer) : ContextHandler(layer) {
     val metalRedrawer: MetalRedrawer
@@ -48,4 +50,8 @@ internal class MetalContextHandler(layer: SkiaLayer) : ContextHandler(layer) {
         surface!!.flushAndSubmit()
         metalRedrawer.finishFrame()
     }
+
+    override fun destroyContext() {
+        destroyContext(Native.getPtr(context!!))
+    }
 }

skiko/src/jvmMain/objectiveC/macos/Drawlayer.mm

@@ -122,6 +122,7 @@ JNIEXPORT void JNICALL Java_org_jetbrains_skiko_HardwareLayer_nativeDispose(JNIE
     {
         [layerStorage removeObject: layer];
         [layer disposeLayer: env];
+        [layer release];
     }
 }
 

skiko/src/jvmMain/objectiveC/macos/MetalRedrawer.mm

@@ -63,6 +63,16 @@
     return self;
 }
 
+-(void)dealloc {
+    NSLog(@"dealock");
+    [self.layer removeFromSuperlayer];
+    [self.layer release];
+    [self.device release];
+    [self.queue release];
+    [self.drawableHandle release];
+    [super dealloc];
+}
+
 @end
 
 extern "C"
@@ -82,6 +92,7 @@ JNIEXPORT jlong JNICALL Java_org_jetbrains_skiko_redrawer_MetalRedrawer_makeMeta
     JNIEnv * env, jobject redrawer, jlong devicePtr, jint width, jint height)
 {
     MetalDevice *device = (MetalDevice *) devicePtr;
+    [device.drawableHandle release];
     id<CAMetalDrawable> currentDrawable = [device.layer nextDrawable];
     GrMtlTextureInfo info;
     info.fTexture.retain(currentDrawable.texture);
@@ -173,9 +184,7 @@ JNIEXPORT void JNICALL Java_org_jetbrains_skiko_redrawer_MetalRedrawer_disposeDe
     JNIEnv *env, jobject redrawer, jlong devicePtr)
 {
     MetalDevice *device = (MetalDevice *) devicePtr;
-    [device.layer removeFromSuperlayer];
     env->DeleteGlobalRef(device.layer.javaRef);
-    [device.layer release];
     [device release];
 }