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c57aff1800
This is part of a larger effort to expose the difference between GrDirectContext, which runs on the GPU thread and can directly perform operations like uploading textures, and GrRecordingContext, which can only queue up work to be delivered to the GrDirectContext later.
115 lines
3.2 KiB
C++
115 lines
3.2 KiB
C++
// Copyright 2013 The Flutter 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/platform/embedder/embedder_surface_software.h"
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#include "flutter/fml/trace_event.h"
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#include "third_party/skia/include/gpu/GrDirectContext.h"
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namespace flutter {
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EmbedderSurfaceSoftware::EmbedderSurfaceSoftware(
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SoftwareDispatchTable software_dispatch_table,
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std::unique_ptr<EmbedderExternalViewEmbedder> external_view_embedder)
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: software_dispatch_table_(software_dispatch_table),
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external_view_embedder_(std::move(external_view_embedder)) {
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if (!software_dispatch_table_.software_present_backing_store) {
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return;
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}
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valid_ = true;
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}
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EmbedderSurfaceSoftware::~EmbedderSurfaceSoftware() = default;
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// |EmbedderSurface|
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bool EmbedderSurfaceSoftware::IsValid() const {
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return valid_;
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}
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// |EmbedderSurface|
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std::unique_ptr<Surface> EmbedderSurfaceSoftware::CreateGPUSurface() {
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if (!IsValid()) {
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return nullptr;
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}
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const bool render_to_surface = !external_view_embedder_;
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auto surface = std::make_unique<GPUSurfaceSoftware>(this, render_to_surface);
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if (!surface->IsValid()) {
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return nullptr;
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}
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return surface;
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}
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// |EmbedderSurface|
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sk_sp<GrDirectContext> EmbedderSurfaceSoftware::CreateResourceContext() const {
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return nullptr;
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}
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// |GPUSurfaceSoftwareDelegate|
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sk_sp<SkSurface> EmbedderSurfaceSoftware::AcquireBackingStore(
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const SkISize& size) {
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TRACE_EVENT0("flutter", "EmbedderSurfaceSoftware::AcquireBackingStore");
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if (!IsValid()) {
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FML_LOG(ERROR)
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<< "Could not acquire backing store for the software surface.";
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return nullptr;
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}
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if (sk_surface_ != nullptr &&
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SkISize::Make(sk_surface_->width(), sk_surface_->height()) == size) {
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// The old and new surface sizes are the same. Nothing to do here.
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return sk_surface_;
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}
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SkImageInfo info = SkImageInfo::MakeN32(
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size.fWidth, size.fHeight, kPremul_SkAlphaType, SkColorSpace::MakeSRGB());
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sk_surface_ = SkSurface::MakeRaster(info, nullptr);
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if (sk_surface_ == nullptr) {
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FML_LOG(ERROR) << "Could not create backing store for software rendering.";
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return nullptr;
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}
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return sk_surface_;
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}
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// |GPUSurfaceSoftwareDelegate|
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bool EmbedderSurfaceSoftware::PresentBackingStore(
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sk_sp<SkSurface> backing_store) {
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if (!IsValid()) {
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FML_LOG(ERROR) << "Tried to present an invalid software surface.";
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return false;
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}
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SkPixmap pixmap;
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if (!backing_store->peekPixels(&pixmap)) {
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FML_LOG(ERROR) << "Could not peek the pixels of the backing store.";
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return false;
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}
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// Some basic sanity checking.
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uint64_t expected_pixmap_data_size = pixmap.width() * pixmap.height() * 4;
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const size_t pixmap_size = pixmap.computeByteSize();
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if (expected_pixmap_data_size != pixmap_size) {
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FML_LOG(ERROR) << "Software backing store had unexpected size.";
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return false;
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}
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return software_dispatch_table_.software_present_backing_store(
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pixmap.addr(), //
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pixmap.rowBytes(), //
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pixmap.height() //
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);
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}
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// |GPUSurfaceSoftwareDelegate|
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ExternalViewEmbedder* EmbedderSurfaceSoftware::GetExternalViewEmbedder() {
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return external_view_embedder_.get();
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}
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} // namespace flutter
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