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FlutterRenderer.mm
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1 // Copyright 2013 The Flutter Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4
5 #import "flutter/shell/platform/darwin/macos/framework/Source/FlutterRenderer.h"
6
7 #import "flutter/shell/platform/darwin/macos/framework/Source/FlutterEngine_Internal.h"
8 #import "flutter/shell/platform/darwin/macos/framework/Source/FlutterExternalTexture.h"
9 #import "flutter/shell/platform/darwin/macos/framework/Source/FlutterViewController_Internal.h"
10 #import "flutter/shell/platform/darwin/macos/framework/Source/FlutterViewEngineProvider.h"
11 #include "flutter/shell/platform/embedder/embedder.h"
12
13 #pragma mark - Static callbacks that require the engine.
14
15 static FlutterMetalTexture OnGetNextDrawable(FlutterEngine* engine,
16 const FlutterFrameInfo* frameInfo) {
17 NSCAssert(NO, @"The renderer config should not be used to get the next drawable.");
18 return FlutterMetalTexture{};
19 }
20
21 static bool OnPresentDrawable(FlutterEngine* engine, const FlutterMetalTexture* texture) {
22 NSCAssert(NO, @"The renderer config should not be used to present drawable.");
23 return false;
24 }
25
26 static bool OnAcquireExternalTexture(FlutterEngine* engine,
27 int64_t textureIdentifier,
28 size_t width,
29 size_t height,
30 FlutterMetalExternalTexture* metalTexture) {
31 return [engine.renderer populateTextureWithIdentifier:textureIdentifier
32 metalTexture:metalTexture];
33 }
34
35 #pragma mark - FlutterRenderer implementation
36
37 @implementation FlutterRenderer {
38 FlutterDarwinContextMetalSkia* _darwinMetalContext;
39 }
40
41 - (instancetype)initWithFlutterEngine:(nonnull FlutterEngine*)flutterEngine {
42 self = [super initWithDelegate:self engine:flutterEngine];
43 if (self) {
44 _device = MTLCreateSystemDefaultDevice();
45 if (!_device) {
46 NSLog(@"Could not acquire Metal device.");
47 return nil;
48 }
49
50 _commandQueue = [_device newCommandQueue];
51 if (!_commandQueue) {
52 NSLog(@"Could not create Metal command queue.");
53 return nil;
54 }
55
56 _darwinMetalContext = [[FlutterDarwinContextMetalSkia alloc] initWithMTLDevice:_device
57 commandQueue:_commandQueue];
58 }
59 return self;
60 }
61
62 - (FlutterRendererConfig)createRendererConfig {
63 FlutterRendererConfig config = {
64 .type = FlutterRendererType::kMetal,
65 .metal = {
66 .struct_size = sizeof(FlutterMetalRendererConfig),
67 .device = (__bridge FlutterMetalDeviceHandle)_device,
68 .present_command_queue = (__bridge FlutterMetalCommandQueueHandle)_commandQueue,
69 .get_next_drawable_callback =
70 reinterpret_cast<FlutterMetalTextureCallback>(OnGetNextDrawable),
71 .present_drawable_callback =
72 reinterpret_cast<FlutterMetalPresentCallback>(OnPresentDrawable),
73 .external_texture_frame_callback =
74 reinterpret_cast<FlutterMetalTextureFrameCallback>(OnAcquireExternalTexture),
75 }};
76 return config;
77 }
78
79 #pragma mark - Embedder callback implementations.
80
81 - (BOOL)populateTextureWithIdentifier:(int64_t)textureID
82 metalTexture:(FlutterMetalExternalTexture*)textureOut {
83 FlutterExternalTexture* texture = [self getTextureWithID:textureID];
84 return [texture populateTexture:textureOut];
85 }
86
87 #pragma mark - FlutterTextureRegistrar methods.
88
89 - (FlutterExternalTexture*)onRegisterTexture:(id<FlutterTexture>)texture {
90 return [[FlutterExternalTexture alloc] initWithFlutterTexture:texture
91 darwinMetalContext:_darwinMetalContext];
92 }
93
94 @end
FlutterEngine
Definition: FlutterEngine.h:30
OnPresentDrawable
static bool OnPresentDrawable(FlutterEngine *engine, const FlutterMetalTexture *texture)
Definition: FlutterRenderer.mm:21
OnAcquireExternalTexture
static bool OnAcquireExternalTexture(FlutterEngine *engine, int64_t textureIdentifier, size_t width, size_t height, FlutterMetalExternalTexture *metalTexture)
Definition: FlutterRenderer.mm:26
FlutterEngine_Internal.h
FlutterViewEngineProvider.h
FlutterRenderer.h
FlutterExternalTexture.h
FlutterExternalTexture
Definition: FlutterExternalTexture.h:18
FlutterRenderer
Definition: FlutterRenderer.h:18
OnGetNextDrawable
static FlutterMetalTexture OnGetNextDrawable(FlutterEngine *engine, const FlutterFrameInfo *frameInfo)
Definition: FlutterRenderer.mm:15
FlutterViewController_Internal.h
FlutterTexture-p
Definition: FlutterTexture.h:21
-[FlutterExternalTexture populateTexture:]
BOOL populateTexture:(nonnull FlutterMetalExternalTexture *metalTexture)