1 files changed, 118 insertions, 0 deletions
diff --git a/tools/Vulkan-Tools/cube/macOS/cubepp/DemoViewController.mm b/tools/Vulkan-Tools/cube/macOS/cubepp/DemoViewController.mm
new file mode 100644
index 00000000..fbb17797
--- /dev/null
+++ b/tools/Vulkan-Tools/cube/macOS/cubepp/DemoViewController.mm
@@ -0,0 +1,118 @@
+/*
+ * DemoViewController.m
+ *
+ * Copyright (c) 2014-2018 The Brenwill Workshop Ltd. (http://www.brenwill.com)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#import "DemoViewController.h"
+#import <QuartzCore/CAMetalLayer.h>
+
+#include "cube.cpp"
+
+#pragma mark -
+#pragma mark DemoViewController
+
+@implementation DemoViewController {
+    CVDisplayLinkRef _displayLink;
+    struct Demo demo;
+    NSTimer* _timer;
+}
+
+- (void)dealloc {
+    [self quit];
+    [super dealloc];
+}
+
+- (void)quit {
+    CVDisplayLinkRelease(_displayLink);
+    demo.cleanup();
+}
+
+/** Since this is a single-view app, initialize Vulkan during view loading. */
+- (void)viewDidLoad {
+    [super viewDidLoad];
+
+    self.view.wantsLayer = YES;  // Back the view with a layer created by the makeBackingLayer method.
+
+    // Convert incoming args to "C" argc/argv strings
+    NSArray *args = [[NSProcessInfo processInfo] arguments];
+    const char** argv = (const char**) alloca(sizeof(char*) * args.count);
+    for(unsigned int i = 0; i < args.count; i++) {
+        NSString *s = args[i];
+        argv[i] = s.UTF8String;
+    }
+
+    demo_main(demo, self.view.layer, args.count, argv);
+
+    // Monitor the rendering loop for a quit condition
+    _timer = [NSTimer scheduledTimerWithTimeInterval: 0.2
+                                              target: self
+                                            selector: @selector(onTick:)
+                                            userInfo: self
+                                             repeats: YES];
+
+    // Start the rendering loop
+    CVDisplayLinkCreateWithActiveCGDisplays(&_displayLink);
+    CVDisplayLinkSetOutputCallback(_displayLink, &DisplayLinkCallback, &demo);
+    CVDisplayLinkStart(_displayLink);
+}
+
+// Close the window if the demo is in a Quit state
+-(void)onTick:(NSTimer*)timer {
+    if (demo.quit) {
+        [[[self view] window] close];
+    }
+}
+
+#pragma mark Display loop callback function
+
+/** Rendering loop callback function for use with a CVDisplayLink. */
+static CVReturn DisplayLinkCallback(CVDisplayLinkRef displayLink, const CVTimeStamp* now,
+                                    const CVTimeStamp* outputTime,
+                                    CVOptionFlags flagsIn, CVOptionFlags* flagsOut, void* target) {
+    struct Demo* demo = (struct Demo*)target;
+    demo->run<WsiPlatform::metal>();
+    if (demo->quit) {
+        CVDisplayLinkStop(displayLink);
+    }
+    return kCVReturnSuccess;
+}
+
+@end
+
+#pragma mark -
+#pragma mark DemoView
+
+@implementation DemoView
+
+/** Indicates that the view wants to draw using the backing layer instead of using drawRect:.  */
+- (BOOL)wantsUpdateLayer {
+    return YES;
+}
+
+/** Returns a Metal-compatible layer. */
++ (Class)layerClass {
+    return [CAMetalLayer class];
+}
+
+/** If the wantsLayer property is set to YES, this method will be invoked to return a layer instance. */
+- (CALayer*)makeBackingLayer {
+    CALayer* layer = [self.class.layerClass layer];
+    CGSize viewScale = [self convertSizeToBacking:CGSizeMake(1.0, 1.0)];
+    layer.contentsScale = MIN(viewScale.width, viewScale.height);
+    return layer;
+}
+
+@end