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8ad42f0dae
* Roll Fuchsia buildtools to 85907c59e97527d79bbfdfd849d8e85c24959cc5 This also updates Flutter buildroot to a6e52dbb776c45cc8c57d7143b8eb8b2e762fdfb which disables -Wtautological-constant-compare temporarily until https://reviews.llvm.org/D39462 lands in clang. This is in line with Fuchsia's compiler options. * Apply clang-format diffs No logical changes. This applies clang-format from the latest Fuchsia buildtools to the engine codebase.
75 lines
2.1 KiB
C++
75 lines
2.1 KiB
C++
// Copyright 2017 The Chromium Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "flutter/shell/gpu/gpu_surface_software.h"
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#include <memory>
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#include "lib/fxl/logging.h"
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namespace shell {
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GPUSurfaceSoftware::GPUSurfaceSoftware(GPUSurfaceSoftwareDelegate* delegate)
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: delegate_(delegate), weak_factory_(this) {}
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GPUSurfaceSoftware::~GPUSurfaceSoftware() = default;
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bool GPUSurfaceSoftware::IsValid() {
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return delegate_ != nullptr;
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}
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bool GPUSurfaceSoftware::SupportsScaling() const {
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return true;
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}
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std::unique_ptr<SurfaceFrame> GPUSurfaceSoftware::AcquireFrame(
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const SkISize& logical_size) {
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if (!IsValid()) {
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return nullptr;
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}
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// Check if we need to support surface scaling.
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const auto scale = SupportsScaling() ? GetScale() : 1.0;
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const auto size = SkISize::Make(logical_size.width() * scale,
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logical_size.height() * scale);
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sk_sp<SkSurface> backing_store = delegate_->AcquireBackingStore(size);
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if (backing_store == nullptr) {
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return nullptr;
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}
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if (size != SkISize::Make(backing_store->width(), backing_store->height())) {
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return nullptr;
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}
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// If the surface has been scaled, we need to apply the inverse scaling to the
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// underlying canvas so that coordinates are mapped to the same spot
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// irrespective of surface scaling.
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SkCanvas* canvas = backing_store->getCanvas();
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canvas->resetMatrix();
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canvas->scale(scale, scale);
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SurfaceFrame::SubmitCallback on_submit =
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[self = weak_factory_.GetWeakPtr()](const SurfaceFrame& surface_frame,
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SkCanvas* canvas) -> bool {
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// If the surface itself went away, there is nothing more to do.
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if (!self || !self->IsValid() || canvas == nullptr) {
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return false;
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}
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canvas->flush();
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return self->delegate_->PresentBackingStore(surface_frame.SkiaSurface());
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};
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return std::make_unique<SurfaceFrame>(backing_store, on_submit);
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}
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GrContext* GPUSurfaceSoftware::GetContext() {
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// The is no GrContext associated with a software surface.
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return nullptr;
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}
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} // namespace shell
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