Acaki
628ce0f12e
- update imgui to use stream fps instead of hardcoded 60 - hide renderer setting for iOS < 17 as CAMetalDisplayLink only supports later versions
134 lines
4.2 KiB
Objective-C
134 lines
4.2 KiB
Objective-C
/*
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See the LICENSE.txt file for this sample’s licensing information.
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Abstract:
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The implementation of the cross-platform game view controller.
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*/
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#import "MetalViewController.h"
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#import "FrameQueue.h"
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#import "ImGuiRenderer.h"
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#import "MetalVideoRenderer.h"
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@implementation MetalViewController {
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FrameQueue *_frameQueue;
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float _framerate;
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BOOL _enableHdr;
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MetalView *_metalView;
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MetalVideoRenderer *_renderer;
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MetricsHandler _metricsHandler;
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}
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- (nonnull instancetype)initWithFrame:(CGRect)bounds framerate:(float)framerate enableHdr:(BOOL)enableHdr metricsHandler:(MetricsHandler)metricsHandler {
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self = [super init];
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if (self) {
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_bounds = bounds;
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_frameQueue = [FrameQueue sharedInstance];
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_framerate = framerate;
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_enableHdr = enableHdr;
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_metricsHandler = metricsHandler;
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}
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return self;
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}
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- (void)loadView {
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self.view = [[MetalView alloc] initWithFrame:_bounds];
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Log(LOG_I, @"[MetalViewController] created MetalView %@", (MetalView *)self.view);
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}
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- (void)viewDidLoad {
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[super viewDidLoad];
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__block MetalView *view = (MetalView *)self.view;
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if (!view) {
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Log(LOG_E, @"The view attached to MetalViewController isn't a MetalView.");
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return;
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}
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_metalView = view;
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_metalView.delegate = self;
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_metalView.framerate = _framerate;
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// Select the device to render with.
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id<MTLDevice> device = MTLCreateSystemDefaultDevice();
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if (!device) {
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Log(LOG_E, @"Metal isn't supported on this device.");
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self.view = [[UIView alloc] initWithFrame:self.view.frame];
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return;
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}
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view.metalLayer.device = device;
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// Initialize the renderer.
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MetalVideoRenderer *renderer = [[MetalVideoRenderer alloc] initWithMetalDevice:device
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drawablePixelFormat:MTLPixelFormatBGR10A2Unorm
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framerate:self->_framerate];
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if (!renderer) {
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Log(LOG_E, @"The renderer couldn't be initialized.");
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return;
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}
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self->_renderer = renderer;
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Log(LOG_I, @"[MetalViewController] viewDidLoad, created renderer: %@", renderer);
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// Initialize the renderer-dependent view properties.
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view.metalLayer.pixelFormat = renderer.colorPixelFormat;
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view.metalLayer.maximumDrawableCount = 3;
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}
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- (void)waitToRenderTo:(nonnull CAMetalLayer *)layer {
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// Renderer obtains a nextDrawable, waiting if necessary
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[_renderer waitToRenderTo:layer];
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// If we don't have a frame yet, wait on that too
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[_frameQueue waitForEnqueue];
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}
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// New method for CAMetalDisplayLink that provides the drawable
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- (void)renderWithDrawable:(nonnull id<CAMetalDrawable>)drawable toLayer:(nonnull CAMetalLayer *)layer API_AVAILABLE(ios(17.0)) {
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if (!_renderer.isStopping) {
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CFTimeInterval timeout = (1.0f / _framerate) - _renderer.averageGPUTime;
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Frame *frame = [_frameQueue dequeueWithTimeout:timeout];
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if (frame) {
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[_renderer renderFrame:frame withDrawable:drawable];
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}
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}
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}
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// Enhanced method that receives timing information from CAMetalDisplayLink
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- (void)renderWithDrawable:(nonnull id<CAMetalDrawable>)drawable toLayer:(nonnull CAMetalLayer *)layer targetPresentationTimestamp:(CFTimeInterval)targetPresentationTimestamp API_AVAILABLE(ios(17.0)) {
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if (!_renderer.isStopping) {
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CFTimeInterval timeout = (1.0f / _framerate) - _renderer.averageGPUTime;
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Frame *frame = [_frameQueue dequeueWithTimeout:timeout];
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if (frame) {
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[_renderer renderFrame:frame withDrawable:drawable targetPresentationTimestamp:targetPresentationTimestamp];
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}
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}
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}
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- (void)drawableResize:(CGSize)size {
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[_renderer drawableResize:size];
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}
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- (void)viewDidDisappear:(BOOL)animated {
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[super viewDidDisappear:animated];
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Log(LOG_I, @"[MetalViewController] viewDidDisappear");
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// Shutdown the renderer first
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[_renderer shutdown];
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_renderer = nil;
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// Then shutdown the view's display link
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if (_metalView) {
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[_metalView shutdown];
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}
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}
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#if TARGET_OS_IOS
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// Hides the Home indicator button automatically.
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- (BOOL)prefersHomeIndicatorAutoHidden {
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return YES;
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}
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#endif
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@end
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