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// FLUTTER_NOLINT
5
6#include "flutter/shell/gpu/gpu_surface_vulkan.h"
7#include "flutter/fml/logging.h"
8
9namespace flutter {
10
11GPUSurfaceVulkan::GPUSurfaceVulkan(
12 GPUSurfaceVulkanDelegate* delegate,
13 std::unique_ptr<vulkan::VulkanNativeSurface> native_surface,
14 bool render_to_surface)
15 : window_(delegate->vk(), std::move(native_surface), render_to_surface),
16 delegate_(delegate),
17 render_to_surface_(render_to_surface),
18 weak_factory_(this) {}
19
20GPUSurfaceVulkan::~GPUSurfaceVulkan() = default;
21
22bool GPUSurfaceVulkan::IsValid() {
23 return window_.IsValid();
24}
25
26std::unique_ptr<SurfaceFrame> GPUSurfaceVulkan::AcquireFrame(
27 const SkISize& size) {
28 // TODO(38466): Refactor GPU surface APIs take into account the fact that an
29 // external view embedder may want to render to the root surface.
30 if (!render_to_surface_) {
31 return std::make_unique<SurfaceFrame>(
32 nullptr, true, [](const SurfaceFrame& surface_frame, SkCanvas* canvas) {
33 return true;
34 });
35 }
36
37 auto surface = window_.AcquireSurface();
38
39 if (surface == nullptr) {
40 return nullptr;
41 }
42
43 SurfaceFrame::SubmitCallback callback =
44 [weak_this = weak_factory_.GetWeakPtr()](const SurfaceFrame&,
45 SkCanvas* canvas) -> bool {
46 // Frames are only ever acquired on the raster thread. This is also the
47 // thread on which the weak pointer factory is collected (as this instance
48 // is owned by the rasterizer). So this use of weak pointers is safe.
49 if (canvas == nullptr || !weak_this) {
50 return false;
51 }
52 return weak_this->window_.SwapBuffers();
53 };
54 return std::make_unique<SurfaceFrame>(std::move(surface), true,
55 std::move(callback));
56}
57
58SkMatrix GPUSurfaceVulkan::GetRootTransformation() const {
59 // This backend does not support delegating to the underlying platform to
60 // query for root surface transformations. Just return identity.
61 SkMatrix matrix;
62 matrix.reset();
63 return matrix;
64}
65
66GrDirectContext* GPUSurfaceVulkan::GetContext() {
67 return window_.GetSkiaGrContext();
68}
69
70flutter::ExternalViewEmbedder* GPUSurfaceVulkan::GetExternalViewEmbedder() {
71 return delegate_->GetExternalViewEmbedder();
72}
73
74} // namespace flutter
75