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011ce5d8e7
We used to do this in the SkPicture, but it's simpler to do it in the rasterizer now that we're using multiple SkPictures in Dart.
106 lines
2.9 KiB
C++
106 lines
2.9 KiB
C++
// Copyright 2015 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 "sky/shell/gpu/rasterizer.h"
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#include "base/trace_event/trace_event.h"
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#include "sky/shell/gpu/ganesh_context.h"
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#include "sky/shell/gpu/ganesh_surface.h"
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#include "sky/shell/gpu/picture_serializer.h"
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#include "third_party/skia/include/core/SkCanvas.h"
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#include "third_party/skia/include/core/SkPicture.h"
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#include "ui/gl/gl_bindings.h"
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#include "ui/gl/gl_context.h"
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#include "ui/gl/gl_share_group.h"
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#include "ui/gl/gl_surface.h"
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namespace sky {
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namespace shell {
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namespace {
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gfx::Size GetSize(SkPicture* picture) {
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const SkRect& rect = picture->cullRect();
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return gfx::Size(rect.width(), rect.height());
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}
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} // namespace
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Rasterizer::Rasterizer()
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: share_group_(new gfx::GLShareGroup()), weak_factory_(this) {
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}
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Rasterizer::~Rasterizer() {
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}
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base::WeakPtr<Rasterizer> Rasterizer::GetWeakPtr() {
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return weak_factory_.GetWeakPtr();
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}
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void Rasterizer::OnAcceleratedWidgetAvailable(gfx::AcceleratedWidget widget) {
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surface_ = gfx::GLSurface::CreateViewGLSurface(widget,
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gfx::SurfaceConfiguration());
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CHECK(surface_) << "GLSurface required.";
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}
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void Rasterizer::Draw(PassRefPtr<SkPicture> picture) {
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TRACE_EVENT0("sky", "Rasterizer::Draw");
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if (!surface_)
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return;
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gfx::Size size = GetSize(picture.get());
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if (size.IsEmpty())
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return;
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EnsureGLContext();
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CHECK(context_->MakeCurrent(surface_.get()));
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EnsureGaneshSurface(surface_->GetBackingFrameBufferObject(), size);
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DrawPicture(picture.get());
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surface_->SwapBuffers();
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// SerializePicture("/data/data/org.domokit.sky.shell/cache/layer0.skp", picture.get());
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}
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void Rasterizer::DrawPicture(SkPicture* picture) {
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TRACE_EVENT0("sky", "Rasterizer::DrawPicture");
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SkCanvas* canvas = ganesh_surface_->canvas();
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canvas->clear(SK_ColorBLACK);
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canvas->drawPicture(picture);
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canvas->flush();
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}
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void Rasterizer::OnOutputSurfaceDestroyed() {
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if (context_) {
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CHECK(context_->MakeCurrent(surface_.get()));
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ganesh_surface_.reset();
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ganesh_context_.reset();
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context_ = nullptr;
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}
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CHECK(!ganesh_surface_);
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CHECK(!ganesh_context_);
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CHECK(!context_);
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surface_ = nullptr;
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}
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void Rasterizer::EnsureGLContext() {
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if (context_)
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return;
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context_ = gfx::GLContext::CreateGLContext(share_group_.get(), surface_.get(),
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gfx::PreferIntegratedGpu);
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CHECK(context_) << "GLContext required.";
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CHECK(context_->MakeCurrent(surface_.get()));
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ganesh_context_.reset(new GaneshContext(context_.get()));
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}
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void Rasterizer::EnsureGaneshSurface(intptr_t window_fbo,
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const gfx::Size& size) {
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if (!ganesh_surface_ || ganesh_surface_->size() != size)
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ganesh_surface_.reset(
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new GaneshSurface(window_fbo, ganesh_context_.get(), size));
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}
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} // namespace shell
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} // namespace sky
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