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ios_context.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 #include "flutter/shell/platform/darwin/ios/ios_context.h"
6 #include "flutter/shell/platform/darwin/ios/rendering_api_selection.h"
7
8 #include "flutter/fml/logging.h"
9 #include "flutter/shell/platform/darwin/ios/ios_context_metal_impeller.h"
10 #include "flutter/shell/platform/darwin/ios/ios_context_metal_skia.h"
11 #include "flutter/shell/platform/darwin/ios/ios_context_software.h"
12
13 FLUTTER_ASSERT_ARC
14
15 namespace flutter {
16
17 IOSContext::IOSContext() = default;
18
19 IOSContext::~IOSContext() = default;
20
21 std::unique_ptr<IOSContext> IOSContext::Create(
22 IOSRenderingAPI api,
23 IOSRenderingBackend backend,
24 const std::shared_ptr<const fml::SyncSwitch>& is_gpu_disabled_sync_switch) {
25 switch (api) {
26 case IOSRenderingAPI::kSoftware:
27 FML_CHECK(backend != IOSRenderingBackend::kImpeller)
28 << "Software rendering is incompatible with Impeller.\n"
29 "Software rendering may have been automatically selected when running on a simulator "
30 "in an environment that does not support Metal. Enabling GPU pass through in your "
31 "environment may fix this. If that is not possible, then disable Impeller.";
32 return std::make_unique<IOSContextSoftware>();
33 case IOSRenderingAPI::kMetal:
34 switch (backend) {
35 case IOSRenderingBackend::kSkia:
36 #if !SLIMPELLER
37 return std::make_unique<IOSContextMetalSkia>();
38 #else // !SLIMPELLER
39 FML_LOG(FATAL) << "Impeller opt-out unavailable.";
40 return nullptr;
41 #endif // !SLIMPELLER
42 case IOSRenderingBackend::kImpeller:
43 return std::make_unique<IOSContextMetalImpeller>(is_gpu_disabled_sync_switch);
44 }
45 default:
46 break;
47 }
48 FML_CHECK(false);
49 return nullptr;
50 }
51
52 IOSRenderingBackend IOSContext::GetBackend() const {
53 return IOSRenderingBackend::kSkia;
54 }
55
56 std::shared_ptr<impeller::Context> IOSContext::GetImpellerContext() const {
57 return nullptr;
58 }
59
60 } // namespace flutter
flutter::IOSRenderingBackend::kSkia
@ kSkia
flutter::IOSContext::~IOSContext
virtual ~IOSContext()
Collects the context object. This must happen on the thread on which this object was created.
ios_context_metal_impeller.h
ios_context_metal_skia.h
flutter::IOSRenderingBackend
IOSRenderingBackend
Definition: rendering_api_selection.h:19
flutter::IOSRenderingBackend::kImpeller
@ kImpeller
flutter
Definition: accessibility_bridge.h:28
flutter::IOSRenderingAPI
IOSRenderingAPI
Definition: rendering_api_selection.h:14
flutter::IOSContext::GetBackend
virtual IOSRenderingBackend GetBackend() const
Get the rendering backend used by this context.
Definition: ios_context.mm:52
flutter::IOSRenderingAPI::kMetal
@ kMetal
rendering_api_selection.h
ios_context_software.h
flutter::IOSContext::IOSContext
IOSContext()
ios_context.h
flutter::IOSRenderingAPI::kSoftware
@ kSoftware
FLUTTER_ASSERT_ARC
Definition: FlutterChannelKeyResponder.mm:13
flutter::IOSContext::Create
static std::unique_ptr< IOSContext > Create(IOSRenderingAPI api, IOSRenderingBackend backend, const std::shared_ptr< const fml::SyncSwitch > &is_gpu_disabled_sync_switch)
Create an iOS context object capable of creating the on-screen and off-screen GPU context for use by ...
Definition: ios_context.mm:21
flutter::IOSContext::GetImpellerContext
virtual std::shared_ptr< impeller::Context > GetImpellerContext() const
Definition: ios_context.mm:56