Add a minimal macOS example app using the C Metal API

This commit is contained in:
Patrick Walton 2019-06-21 17:59:46 -07:00
parent 6785ba0623
commit ad858564a9
17 changed files with 1265 additions and 0 deletions

1
.gitignore vendored
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@ -8,6 +8,7 @@ node_modules
/examples/c_canvas_minimal/build /examples/c_canvas_minimal/build
/shaders/build /shaders/build
/c/build /c/build
/examples/macos_app/Pathfinder\ Example.xcodeproj/project.xcworkspace/xcuserdata/*
# Editors # Editors
*.swp *.swp

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//
// AppDelegate.h
// Pathfinder Example
//
// Created by Patrick Walton on 6/21/19.
// Copyright © 2019 The Pathfinder Project Developers. All rights reserved.
//
#import <Cocoa/Cocoa.h>
@interface AppDelegate : NSObject <NSApplicationDelegate>
@end

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@ -0,0 +1,28 @@
//
// AppDelegate.m
// Pathfinder Example
//
// Created by Patrick Walton on 6/21/19.
// Copyright © 2019 The Pathfinder Project Developers. All rights reserved.
//
#import "AppDelegate.h"
@interface AppDelegate ()
@property (weak) IBOutlet NSWindow *window;
@end
@implementation AppDelegate
- (void)applicationDidFinishLaunching:(NSNotification *)aNotification {
// Insert code here to initialize your application
}
- (void)applicationWillTerminate:(NSNotification *)aNotification {
// Insert code here to tear down your application
}
@end

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<customObject id="YLy-65-1bz" customClass="NSFontManager"/>
<menu title="Main Menu" systemMenu="main" id="AYu-sK-qS6">
<items>
<menuItem title="Pathfinder Example" id="1Xt-HY-uBw">
<modifierMask key="keyEquivalentModifierMask"/>
<menu key="submenu" title="Pathfinder Example" systemMenu="apple" id="uQy-DD-JDr">
<items>
<menuItem title="About Pathfinder Example" id="5kV-Vb-QxS">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="orderFrontStandardAboutPanel:" target="-1" id="Exp-CZ-Vem"/>
</connections>
</menuItem>
<menuItem isSeparatorItem="YES" id="VOq-y0-SEH"/>
<menuItem title="Preferences…" enabled="NO" keyEquivalent="," id="BOF-NM-1cW"/>
<menuItem isSeparatorItem="YES" id="wFC-TO-SCJ"/>
<menuItem title="Services" id="NMo-om-nkz">
<modifierMask key="keyEquivalentModifierMask"/>
<menu key="submenu" title="Services" systemMenu="services" id="hz9-B4-Xy5"/>
</menuItem>
<menuItem isSeparatorItem="YES" id="4je-JR-u6R"/>
<menuItem title="Hide Pathfinder Example" keyEquivalent="h" id="Olw-nP-bQN">
<connections>
<action selector="hide:" target="-1" id="PnN-Uc-m68"/>
</connections>
</menuItem>
<menuItem title="Hide Others" keyEquivalent="h" id="Vdr-fp-XzO">
<modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
<connections>
<action selector="hideOtherApplications:" target="-1" id="VT4-aY-XCT"/>
</connections>
</menuItem>
<menuItem title="Show All" id="Kd2-mp-pUS">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="unhideAllApplications:" target="-1" id="Dhg-Le-xox"/>
</connections>
</menuItem>
<menuItem isSeparatorItem="YES" id="kCx-OE-vgT"/>
<menuItem title="Quit Pathfinder Example" keyEquivalent="q" id="4sb-4s-VLi">
<connections>
<action selector="terminate:" target="-1" id="Te7-pn-YzF"/>
</connections>
</menuItem>
</items>
</menu>
</menuItem>
<menuItem title="Edit" id="5QF-Oa-p0T">
<modifierMask key="keyEquivalentModifierMask"/>
<menu key="submenu" title="Edit" id="W48-6f-4Dl">
<items>
<menuItem title="Undo" keyEquivalent="z" id="dRJ-4n-Yzg">
<connections>
<action selector="undo:" target="-1" id="M6e-cu-g7V"/>
</connections>
</menuItem>
<menuItem title="Redo" keyEquivalent="Z" id="6dh-zS-Vam">
<connections>
<action selector="redo:" target="-1" id="oIA-Rs-6OD"/>
</connections>
</menuItem>
<menuItem isSeparatorItem="YES" id="WRV-NI-Exz"/>
<menuItem title="Cut" keyEquivalent="x" id="uRl-iY-unG">
<connections>
<action selector="cut:" target="-1" id="YJe-68-I9s"/>
</connections>
</menuItem>
<menuItem title="Copy" keyEquivalent="c" id="x3v-GG-iWU">
<connections>
<action selector="copy:" target="-1" id="G1f-GL-Joy"/>
</connections>
</menuItem>
<menuItem title="Paste" keyEquivalent="v" id="gVA-U4-sdL">
<connections>
<action selector="paste:" target="-1" id="UvS-8e-Qdg"/>
</connections>
</menuItem>
<menuItem title="Paste and Match Style" keyEquivalent="V" id="WeT-3V-zwk">
<modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
<connections>
<action selector="pasteAsPlainText:" target="-1" id="cEh-KX-wJQ"/>
</connections>
</menuItem>
<menuItem title="Delete" id="pa3-QI-u2k">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="delete:" target="-1" id="0Mk-Ml-PaM"/>
</connections>
</menuItem>
<menuItem title="Select All" keyEquivalent="a" id="Ruw-6m-B2m">
<connections>
<action selector="selectAll:" target="-1" id="VNm-Mi-diN"/>
</connections>
</menuItem>
<menuItem isSeparatorItem="YES" id="uyl-h8-XO2"/>
<menuItem title="Find" id="4EN-yA-p0u">
<modifierMask key="keyEquivalentModifierMask"/>
<menu key="submenu" title="Find" id="1b7-l0-nxx">
<items>
<menuItem title="Find…" tag="1" keyEquivalent="f" id="Xz5-n4-O0W">
<connections>
<action selector="performFindPanelAction:" target="-1" id="cD7-Qs-BN4"/>
</connections>
</menuItem>
<menuItem title="Find and Replace…" tag="12" keyEquivalent="f" id="YEy-JH-Tfz">
<modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
<connections>
<action selector="performFindPanelAction:" target="-1" id="WD3-Gg-5AJ"/>
</connections>
</menuItem>
<menuItem title="Find Next" tag="2" keyEquivalent="g" id="q09-fT-Sye">
<connections>
<action selector="performFindPanelAction:" target="-1" id="NDo-RZ-v9R"/>
</connections>
</menuItem>
<menuItem title="Find Previous" tag="3" keyEquivalent="G" id="OwM-mh-QMV">
<connections>
<action selector="performFindPanelAction:" target="-1" id="HOh-sY-3ay"/>
</connections>
</menuItem>
<menuItem title="Use Selection for Find" tag="7" keyEquivalent="e" id="buJ-ug-pKt">
<connections>
<action selector="performFindPanelAction:" target="-1" id="U76-nv-p5D"/>
</connections>
</menuItem>
<menuItem title="Jump to Selection" keyEquivalent="j" id="S0p-oC-mLd">
<connections>
<action selector="centerSelectionInVisibleArea:" target="-1" id="IOG-6D-g5B"/>
</connections>
</menuItem>
</items>
</menu>
</menuItem>
<menuItem title="Spelling and Grammar" id="Dv1-io-Yv7">
<modifierMask key="keyEquivalentModifierMask"/>
<menu key="submenu" title="Spelling" id="3IN-sU-3Bg">
<items>
<menuItem title="Show Spelling and Grammar" keyEquivalent=":" id="HFo-cy-zxI">
<connections>
<action selector="showGuessPanel:" target="-1" id="vFj-Ks-hy3"/>
</connections>
</menuItem>
<menuItem title="Check Document Now" keyEquivalent=";" id="hz2-CU-CR7">
<connections>
<action selector="checkSpelling:" target="-1" id="fz7-VC-reM"/>
</connections>
</menuItem>
<menuItem isSeparatorItem="YES" id="bNw-od-mp5"/>
<menuItem title="Check Spelling While Typing" id="rbD-Rh-wIN">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="toggleContinuousSpellChecking:" target="-1" id="7w6-Qz-0kB"/>
</connections>
</menuItem>
<menuItem title="Check Grammar With Spelling" id="mK6-2p-4JG">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="toggleGrammarChecking:" target="-1" id="muD-Qn-j4w"/>
</connections>
</menuItem>
<menuItem title="Correct Spelling Automatically" id="78Y-hA-62v">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="toggleAutomaticSpellingCorrection:" target="-1" id="2lM-Qi-WAP"/>
</connections>
</menuItem>
</items>
</menu>
</menuItem>
<menuItem title="Substitutions" id="9ic-FL-obx">
<modifierMask key="keyEquivalentModifierMask"/>
<menu key="submenu" title="Substitutions" id="FeM-D8-WVr">
<items>
<menuItem title="Show Substitutions" id="z6F-FW-3nz">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="orderFrontSubstitutionsPanel:" target="-1" id="oku-mr-iSq"/>
</connections>
</menuItem>
<menuItem isSeparatorItem="YES" id="gPx-C9-uUO"/>
<menuItem title="Smart Copy/Paste" id="9yt-4B-nSM">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="toggleSmartInsertDelete:" target="-1" id="3IJ-Se-DZD"/>
</connections>
</menuItem>
<menuItem title="Smart Quotes" id="hQb-2v-fYv">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="toggleAutomaticQuoteSubstitution:" target="-1" id="ptq-xd-QOA"/>
</connections>
</menuItem>
<menuItem title="Smart Dashes" id="rgM-f4-ycn">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="toggleAutomaticDashSubstitution:" target="-1" id="oCt-pO-9gS"/>
</connections>
</menuItem>
<menuItem title="Smart Links" id="cwL-P1-jid">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="toggleAutomaticLinkDetection:" target="-1" id="Gip-E3-Fov"/>
</connections>
</menuItem>
<menuItem title="Data Detectors" id="tRr-pd-1PS">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="toggleAutomaticDataDetection:" target="-1" id="R1I-Nq-Kbl"/>
</connections>
</menuItem>
<menuItem title="Text Replacement" id="HFQ-gK-NFA">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="toggleAutomaticTextReplacement:" target="-1" id="DvP-Fe-Py6"/>
</connections>
</menuItem>
</items>
</menu>
</menuItem>
<menuItem title="Transformations" id="2oI-Rn-ZJC">
<modifierMask key="keyEquivalentModifierMask"/>
<menu key="submenu" title="Transformations" id="c8a-y6-VQd">
<items>
<menuItem title="Make Upper Case" id="vmV-6d-7jI">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="uppercaseWord:" target="-1" id="sPh-Tk-edu"/>
</connections>
</menuItem>
<menuItem title="Make Lower Case" id="d9M-CD-aMd">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="lowercaseWord:" target="-1" id="iUZ-b5-hil"/>
</connections>
</menuItem>
<menuItem title="Capitalize" id="UEZ-Bs-lqG">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="capitalizeWord:" target="-1" id="26H-TL-nsh"/>
</connections>
</menuItem>
</items>
</menu>
</menuItem>
<menuItem title="Speech" id="xrE-MZ-jX0">
<modifierMask key="keyEquivalentModifierMask"/>
<menu key="submenu" title="Speech" id="3rS-ZA-NoH">
<items>
<menuItem title="Start Speaking" id="Ynk-f8-cLZ">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="startSpeaking:" target="-1" id="654-Ng-kyl"/>
</connections>
</menuItem>
<menuItem title="Stop Speaking" id="Oyz-dy-DGm">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="stopSpeaking:" target="-1" id="dX8-6p-jy9"/>
</connections>
</menuItem>
</items>
</menu>
</menuItem>
</items>
</menu>
</menuItem>
<menuItem title="View" id="H8h-7b-M4v">
<modifierMask key="keyEquivalentModifierMask"/>
<menu key="submenu" title="View" id="HyV-fh-RgO">
<items>
<menuItem title="Show Toolbar" keyEquivalent="t" id="snW-S8-Cw5">
<modifierMask key="keyEquivalentModifierMask" option="YES" command="YES"/>
<connections>
<action selector="toggleToolbarShown:" target="-1" id="BXY-wc-z0C"/>
</connections>
</menuItem>
<menuItem title="Customize Toolbar…" id="1UK-8n-QPP">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="runToolbarCustomizationPalette:" target="-1" id="pQI-g3-MTW"/>
</connections>
</menuItem>
<menuItem isSeparatorItem="YES" id="hB3-LF-h0Y"/>
<menuItem title="Show Sidebar" keyEquivalent="s" id="kIP-vf-haE">
<modifierMask key="keyEquivalentModifierMask" control="YES" command="YES"/>
<connections>
<action selector="toggleSidebar:" target="-1" id="iwa-gc-5KM"/>
</connections>
</menuItem>
<menuItem title="Enter Full Screen" keyEquivalent="f" id="4J7-dP-txa">
<modifierMask key="keyEquivalentModifierMask" control="YES" command="YES"/>
<connections>
<action selector="toggleFullScreen:" target="-1" id="dU3-MA-1Rq"/>
</connections>
</menuItem>
</items>
</menu>
</menuItem>
<menuItem title="Window" id="aUF-d1-5bR">
<modifierMask key="keyEquivalentModifierMask"/>
<menu key="submenu" title="Window" systemMenu="window" id="Td7-aD-5lo">
<items>
<menuItem title="Minimize" keyEquivalent="m" id="OY7-WF-poV">
<connections>
<action selector="performMiniaturize:" target="-1" id="VwT-WD-YPe"/>
</connections>
</menuItem>
<menuItem title="Zoom" id="R4o-n2-Eq4">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="performZoom:" target="-1" id="DIl-cC-cCs"/>
</connections>
</menuItem>
<menuItem isSeparatorItem="YES" id="eu3-7i-yIM"/>
<menuItem title="Bring All to Front" id="LE2-aR-0XJ">
<modifierMask key="keyEquivalentModifierMask"/>
<connections>
<action selector="arrangeInFront:" target="-1" id="DRN-fu-gQh"/>
</connections>
</menuItem>
</items>
</menu>
</menuItem>
<menuItem title="Help" id="wpr-3q-Mcd">
<modifierMask key="keyEquivalentModifierMask"/>
<menu key="submenu" title="Help" systemMenu="help" id="F2S-fz-NVQ">
<items>
<menuItem title="Pathfinder Example Help" keyEquivalent="?" id="FKE-Sm-Kum">
<connections>
<action selector="showHelp:" target="-1" id="y7X-2Q-9no"/>
</connections>
</menuItem>
</items>
</menu>
</menuItem>
</items>
</menu>
<window title="Pathfinder Example" allowsToolTipsWhenApplicationIsInactive="NO" autorecalculatesKeyViewLoop="NO" releasedWhenClosed="NO" animationBehavior="default" id="QvC-M9-y7g">
<windowStyleMask key="styleMask" titled="YES" closable="YES" miniaturizable="YES" resizable="YES"/>
<rect key="contentRect" x="335" y="390" width="640" height="480"/>
<rect key="screenRect" x="0.0" y="0.0" width="1680" height="1027"/>
<view key="contentView" wantsLayer="YES" id="EiT-Mj-1SZ">
<rect key="frame" x="0.0" y="0.0" width="640" height="480"/>
<autoresizingMask key="autoresizingMask"/>
<subviews>
<customView id="naY-wz-xJX" customClass="PathfinderView">
<rect key="frame" x="0.0" y="0.0" width="640" height="480"/>
<autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
</customView>
</subviews>
</view>
</window>
</objects>
</document>

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>CFBundleDevelopmentRegion</key>
<string>$(DEVELOPMENT_LANGUAGE)</string>
<key>CFBundleExecutable</key>
<string>$(EXECUTABLE_NAME)</string>
<key>CFBundleIconFile</key>
<string></string>
<key>CFBundleIdentifier</key>
<string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
<key>CFBundleInfoDictionaryVersion</key>
<string>6.0</string>
<key>CFBundleName</key>
<string>$(PRODUCT_NAME)</string>
<key>CFBundlePackageType</key>
<string>APPL</string>
<key>CFBundleShortVersionString</key>
<string>1.0</string>
<key>CFBundleVersion</key>
<string>1</string>
<key>LSMinimumSystemVersion</key>
<string>$(MACOSX_DEPLOYMENT_TARGET)</string>
<key>NSHumanReadableCopyright</key>
<string>Copyright © 2019 The Pathfinder Project Developers. All rights reserved.</string>
<key>NSMainNibFile</key>
<string>MainMenu</string>
<key>NSPrincipalClass</key>
<string>NSApplication</string>
</dict>
</plist>

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@ -0,0 +1,30 @@
//
// PathfinderView.h
// Pathfinder Example
//
// Created by Patrick Walton on 6/21/19.
// Copyright © 2019 The Pathfinder Project Developers. All rights reserved.
//
#import <Cocoa/Cocoa.h>
#import <Metal/Metal.h>
#include <pathfinder/pathfinder.h>
NS_ASSUME_NONNULL_BEGIN
@interface PathfinderView : NSView {
id<MTLDevice> mDevice;
PFMetalRendererRef mRenderer;
PFCanvasFontContextRef mFontContext;
PFBuildOptionsRef mBuildOptions;
CVDisplayLinkRef mDisplayLink;
int32_t mFrameNumber;
CGSize mLayerSize;
NSLock *mRenderLock;
}
- (void)_render;
@end
NS_ASSUME_NONNULL_END

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//
// PathfinderView.m
// Pathfinder Example
//
// Created by Patrick Walton on 6/21/19.
// Copyright © 2019 The Pathfinder Project Developers. All rights reserved.
//
#import <QuartzCore/QuartzCore.h>
#import "PathfinderView.h"
#import <Metal/Metal.h>
#include <math.h>
static CVReturn outputCallback(CVDisplayLinkRef displayLink,
const CVTimeStamp *now,
const CVTimeStamp *outputTime,
CVOptionFlags flagsIn,
CVOptionFlags *flagsOut,
void *userData) {
[(__bridge PathfinderView *)userData _render];
return kCVReturnSuccess;
}
static CATransform3D createPerspectiveMatrix(CGFloat fovY,
CGFloat aspect,
CGFloat zNear,
CGFloat zFar) {
CGFloat f = tan(1.0 / (fovY * 0.5));
CGFloat zDenom = 1.0 / (zNear - zFar);
CATransform3D transform = CATransform3DIdentity;
transform.m11 = f / aspect;
transform.m22 = f;
transform.m33 = (zFar + zNear) * zDenom;
transform.m34 = -1.0;
transform.m43 = 2.0 * zFar * zNear * zDenom;
return transform;
}
static PFTransform3DF pfTransformFromCATransform(const CATransform3D *transform) {
// Core Animation matrices are in column-major order, while Pathfinder matrices are in
// row-major order (at least in the latter's C API). So transpose here.
PFTransform3DF pfTransform;
pfTransform.m00 = (float)transform->m11;
pfTransform.m01 = (float)transform->m21;
pfTransform.m02 = (float)transform->m31;
pfTransform.m03 = (float)transform->m41;
pfTransform.m10 = (float)transform->m12;
pfTransform.m11 = (float)transform->m22;
pfTransform.m12 = (float)transform->m32;
pfTransform.m13 = (float)transform->m42;
pfTransform.m20 = (float)transform->m13;
pfTransform.m21 = (float)transform->m23;
pfTransform.m22 = (float)transform->m33;
pfTransform.m23 = (float)transform->m43;
pfTransform.m30 = (float)transform->m14;
pfTransform.m31 = (float)transform->m24;
pfTransform.m32 = (float)transform->m34;
pfTransform.m33 = (float)transform->m44;
return pfTransform;
}
@implementation PathfinderView
#define FONT_SIZE 256.0f
- (void)_render {
[mRenderLock lock];
CGSize size = mLayerSize;
PFCanvasRef canvas = PFCanvasCreate(mFontContext, &(PFVector2F){size.width, size.height});
PFFillStyleRef fillStyle =
PFFillStyleCreateColor(&(PFColorU){0, 0, 0, 255});
PFCanvasSetFillStyle(canvas, fillStyle);
PFCanvasSetFontSize(canvas, FONT_SIZE);
PFCanvasSetTextAlign(canvas, PF_TEXT_ALIGN_CENTER);
PFVector2F textOrigin;
textOrigin.x = 0.0;
textOrigin.y = FONT_SIZE * 0.25;
PFCanvasFillText(canvas, "Pathfinder", 0, &textOrigin);
PFCanvasFillRect(canvas, &(const PFRectF){0.0, 0.0, 1.0, 1.0});
PFFillStyleDestroy(fillStyle);
PFSceneRef scene = PFCanvasCreateScene(canvas);
PFSceneProxyRef sceneProxy = PFSceneProxyCreateFromSceneAndRayonExecutor(scene);
int32_t frame = mFrameNumber;
int32_t nT = frame % 240;
if (nT > 120)
nT = 240 - nT;
CATransform3D transform =
CATransform3DMakeTranslation(0.0, 0.0, -8.0 + (CGFloat)nT / 120.0 * 8.0);
transform = CATransform3DRotate(transform,
frame / 120.0 * M_PI * 2.0,
0.0,
1.0,
0.0);
transform = CATransform3DScale(transform, -2.0 / size.width, 2.0 / size.height, 1.0);
CGFloat aspect = size.width / size.height;
transform = CATransform3DConcat(transform,
createPerspectiveMatrix(M_PI * 0.25, aspect, 0.01, 10.0));
PFPerspective pfPerspective;
pfPerspective.transform = pfTransformFromCATransform(&transform);
pfPerspective.window_size.x = size.width;
pfPerspective.window_size.y = size.height;
PFBuildOptionsRef buildOptions = PFBuildOptionsCreate();
PFRenderTransformRef renderTransform = PFRenderTransformCreatePerspective(&pfPerspective);
PFBuildOptionsSetTransform(buildOptions, renderTransform);
PFSceneProxyBuildAndRenderMetal(sceneProxy, mRenderer, buildOptions);
PFMetalDevicePresentDrawable(PFMetalRendererGetDevice(mRenderer));
mFrameNumber++;
[mRenderLock unlock];
}
- (void)_checkCVResult:(CVReturn)result {
if (result != kCVReturnSuccess) {
@throw [NSException exceptionWithName:@"CoreVideoCallFailed"
reason:@"Core Video call failed"
userInfo:nil];
}
}
- (void)_initializeIfNecessary:(CAMetalLayer *)layer {
if (mDevice != nil)
return;
mFrameNumber = 0;
mDevice = MTLCreateSystemDefaultDevice();
[layer setDevice:mDevice];
[layer setContentsScale:[[self window] backingScaleFactor]];
mRenderLock = [[NSLock alloc] init];
mLayerSize = [self convertSizeToBacking:[layer bounds].size];
PFMetalDeviceRef device = PFMetalDeviceCreate(layer);
PFResourceLoaderRef resourceLoader = PFFilesystemResourceLoaderLocate();
PFMetalDestFramebufferRef destFramebuffer =
PFMetalDestFramebufferCreateFullWindow(&(PFVector2I){mLayerSize.width, mLayerSize.height});
PFRendererOptions rendererOptions;
rendererOptions.background_color = (PFColorF){1.0, 1.0, 1.0, 1.0};
rendererOptions.flags = PF_RENDERER_OPTIONS_FLAGS_HAS_BACKGROUND_COLOR;
mRenderer = PFMetalRendererCreate(device,
resourceLoader,
destFramebuffer,
&rendererOptions);
mFontContext = PFCanvasFontContextCreateWithSystemSource();
mBuildOptions = PFBuildOptionsCreate();
[self _checkCVResult:CVDisplayLinkCreateWithActiveCGDisplays(&mDisplayLink)];
[self _checkCVResult:CVDisplayLinkSetOutputCallback(mDisplayLink,
outputCallback,
(__bridge void *_Nullable)(self))];
[self _checkCVResult:CVDisplayLinkStart(mDisplayLink)];
}
- (CALayer *)makeBackingLayer {
return [[CAMetalLayer alloc] init];
}
- (BOOL)wantsLayer {
return YES;
}
- (BOOL)wantsUpdateLayer {
return YES;
}
- (NSViewLayerContentsRedrawPolicy)layerContentsRedrawPolicy {
return NSViewLayerContentsRedrawOnSetNeedsDisplay;
}
- (void)drawRect:(NSRect)dirtyRect {
[self _initializeIfNecessary:(CAMetalLayer *)[self layer]];
}
- (void)displayLayer:(CALayer *)layer {
[self _initializeIfNecessary:(CAMetalLayer *)layer];
}
- (void)awakeFromNib {
[self _initializeIfNecessary:(CAMetalLayer *)[self layer]];
}
@end

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<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict/>
</plist>

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//
// main.m
// Pathfinder Example
//
// Created by Patrick Walton on 6/21/19.
// Copyright © 2019 The Pathfinder Project Developers. All rights reserved.
//
#import <Cocoa/Cocoa.h>
int main(int argc, const char * argv[]) {
return NSApplicationMain(argc, argv);
}