86 lines
2.5 KiB
Text
86 lines
2.5 KiB
Text
/*
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* DemoViewController.mm
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*
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* Copyright (c) 2016-2017 The Brenwill Workshop Ltd.
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* This code is licensed under the MIT license (MIT) (http://opensource.org/licenses/MIT)
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*/
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#import "DemoViewController.h"
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#import <QuartzCore/CAMetalLayer.h>
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#include "MVKExample.h"
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const std::string getAssetPath() {
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return [NSBundle.mainBundle.resourcePath stringByAppendingString: @"/data/"].UTF8String;
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}
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/** Rendering loop callback function for use with a CVDisplayLink. */
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static CVReturn DisplayLinkCallback(CVDisplayLinkRef displayLink,
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const CVTimeStamp* now,
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const CVTimeStamp* outputTime,
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CVOptionFlags flagsIn,
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CVOptionFlags* flagsOut,
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void* target) {
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//((MVKExample*)target)->renderFrame();
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((MVKExample*)target)->nextFrame(); // SRS - Call MVKExample::nextFrame() to animate frames vs. MVKExample::renderFrame() for static image
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return kCVReturnSuccess;
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}
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#pragma mark -
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#pragma mark DemoViewController
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@implementation DemoViewController {
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MVKExample* _mvkExample;
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CVDisplayLinkRef _displayLink;
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}
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/** Since this is a single-view app, initialize Vulkan during view loading. */
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-(void) viewDidLoad {
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[super viewDidLoad];
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self.view.wantsLayer = YES; // Back the view with a layer created by the makeBackingLayer method.
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_mvkExample = new MVKExample(self.view);
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CVDisplayLinkCreateWithActiveCGDisplays(&_displayLink);
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CVDisplayLinkSetOutputCallback(_displayLink, &DisplayLinkCallback, _mvkExample);
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CVDisplayLinkStart(_displayLink);
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}
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-(void) dealloc {
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CVDisplayLinkRelease(_displayLink);
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delete _mvkExample;
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[super dealloc];
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}
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// Handle keyboard input
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-(void) keyDown:(NSEvent*) theEvent {
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_mvkExample->keyPressed(theEvent.keyCode);
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}
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@end
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#pragma mark -
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#pragma mark DemoView
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@implementation DemoView
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/** Indicates that the view wants to draw using the backing layer instead of using drawRect:. */
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-(BOOL) wantsUpdateLayer { return YES; }
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/** Returns a Metal-compatible layer. */
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+(Class) layerClass { return [CAMetalLayer class]; }
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/** If the wantsLayer property is set to YES, this method will be invoked to return a layer instance. */
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-(CALayer*) makeBackingLayer {
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CALayer* layer = [self.class.layerClass layer];
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CGSize viewScale = [self convertSizeToBacking: CGSizeMake(1.0, 1.0)];
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layer.contentsScale = MIN(viewScale.width, viewScale.height);
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return layer;
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}
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-(BOOL) acceptsFirstResponder { return YES; }
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@end
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