| Flutter Impeller |

khr_swapchain_vk.cc
Go to the documentation of this file.
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 "impeller/renderer/backend/vulkan/swapchain/khr/khr_swapchain_vk.h"
6
7 #include "flutter/fml/trace_event.h"
8 #include "impeller/base/validation.h"
9 #include "impeller/renderer/backend/vulkan/swapchain/khr/khr_swapchain_impl_vk.h"
10
11 namespace impeller {
12
13 KHRSwapchainVK::KHRSwapchainVK(const std::shared_ptr<Context>& context,
14 vk::UniqueSurfaceKHR surface,
15 const ISize& size,
16 bool enable_msaa)
17 : size_(size), enable_msaa_(enable_msaa) {
18 auto impl = KHRSwapchainImplVK::Create(context, //
19 std::move(surface), //
20 size_, //
21 enable_msaa_ //
22 );
23 if (!impl || !impl->IsValid()) {
24 VALIDATION_LOG << "Failed to create SwapchainVK implementation.";
25 return;
26 }
27 impl_ = std::move(impl);
28 }
29
30 KHRSwapchainVK::~KHRSwapchainVK() = default;
31
32 bool KHRSwapchainVK::IsValid() const {
33 return impl_ ? impl_->IsValid() : false;
34 }
35
36 void KHRSwapchainVK::UpdateSurfaceSize(const ISize& size) {
37 // Update the size of the swapchain. On the next acquired drawable,
38 // the sizes may no longer match, forcing the swapchain to be recreated.
39 size_ = size;
40 }
41
42 void KHRSwapchainVK::AddFinalCommandBuffer(
43 std::shared_ptr<CommandBuffer> cmd_buffer) const {
44 impl_->AddFinalCommandBuffer(std::move(cmd_buffer));
45 }
46
47 std::unique_ptr<Surface> KHRSwapchainVK::AcquireNextDrawable() {
48 if (!IsValid()) {
49 return nullptr;
50 }
51
52 TRACE_EVENT0("impeller", __FUNCTION__);
53
54 auto result = impl_->AcquireNextDrawable();
55 if (!result.out_of_date && size_ == impl_->GetSize()) {
56 return std::move(result.surface);
57 }
58
59 TRACE_EVENT0("impeller", "RecreateSwapchain");
60
61 // This swapchain implementation indicates that it is out of date. Tear it
62 // down and make a new one.
63 auto context = impl_->GetContext();
64 auto [surface, old_swapchain] = impl_->DestroySwapchain();
65
66 auto new_impl = KHRSwapchainImplVK::Create(context, //
67 std::move(surface), //
68 size_, //
69 enable_msaa_, //
70 *old_swapchain //
71 );
72 if (!new_impl || !new_impl->IsValid()) {
73 VALIDATION_LOG << "Could not update swapchain.";
74 // The old swapchain is dead because we took its surface. This is
75 // unrecoverable.
76 impl_.reset();
77 return nullptr;
78 }
79 impl_ = std::move(new_impl);
80
81 //----------------------------------------------------------------------------
82 /// We managed to recreate the swapchain in the new configuration. Try again.
83 ///
84 return AcquireNextDrawable();
85 }
86
87 vk::Format KHRSwapchainVK::GetSurfaceFormat() const {
88 return IsValid() ? impl_->GetSurfaceFormat() : vk::Format::eUndefined;
89 }
90
91 } // namespace impeller
khr_swapchain_impl_vk.h
khr_swapchain_vk.h
impeller::interop::Create
ScopedObject< Object > Create(CtorArgs &&... args)
Definition: object.h:160
impeller
Definition: allocation.cc:12
impeller::ISize
ISize64 ISize
Definition: size.h:174
impeller::TSize
Definition: size.h:25
validation.h
VALIDATION_LOG
#define VALIDATION_LOG
Definition: validation.h:91