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When navigating from one app to another, we create a new Android window and destroy the old one. Previously, when we destroyed the old window after creating the new window, we would destroy the Ganesh context after making the GL context for the new window current, causing us to corrupt the GL state in the new window. After this CL, we call MakeCurrent before destroying the Ganesh context so that it interacts with the proper GL context. R=jackson@google.com Review URL: https://codereview.chromium.org/1214263002.
97 lines
2.7 KiB
C++
97 lines
2.7 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 "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(skia::RefPtr<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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}
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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->drawPicture(picture);
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canvas->flush();
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}
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void Rasterizer::OnOutputSurfaceDestroyed() {
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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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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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