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// Copyright (c) 2013 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "cc/output/output_surface.h"
#include "base/bind.h"
#include "base/location.h"
#include "base/single_thread_task_runner.h"
#include "base/thread_task_runner_handle.h"
#include "base/trace_event/trace_event.h"
#include "cc/output/managed_memory_policy.h"
#include "cc/output/output_surface_client.h"
#include "gpu/GLES2/gl2extchromium.h"
#include "gpu/command_buffer/client/context_support.h"
#include "gpu/command_buffer/client/gles2_interface.h"
#include "third_party/skia/include/gpu/GrContext.h"
#include "ui/gfx/geometry/rect.h"
#include "ui/gfx/geometry/size.h"
namespace cc {
OutputSurface::OutputSurface(
const scoped_refptr<ContextProvider>& context_provider,
const scoped_refptr<ContextProvider>& worker_context_provider,
scoped_ptr<SoftwareOutputDevice> software_device)
: client_(NULL),
context_provider_(context_provider),
worker_context_provider_(worker_context_provider),
software_device_(software_device.Pass()),
device_scale_factor_(-1),
external_stencil_test_enabled_(false),
weak_ptr_factory_(this) {
}
OutputSurface::OutputSurface(
const scoped_refptr<ContextProvider>& context_provider)
: OutputSurface(context_provider, nullptr, nullptr) {
}
OutputSurface::OutputSurface(
const scoped_refptr<ContextProvider>& context_provider,
const scoped_refptr<ContextProvider>& worker_context_provider)
: OutputSurface(context_provider, worker_context_provider, nullptr) {
}
OutputSurface::OutputSurface(scoped_ptr<SoftwareOutputDevice> software_device)
: OutputSurface(nullptr, nullptr, software_device.Pass()) {
}
OutputSurface::OutputSurface(
const scoped_refptr<ContextProvider>& context_provider,
scoped_ptr<SoftwareOutputDevice> software_device)
: OutputSurface(context_provider, nullptr, software_device.Pass()) {
}
void OutputSurface::CommitVSyncParameters(base::TimeTicks timebase,
base::TimeDelta interval) {
TRACE_EVENT2("cc",
"OutputSurface::CommitVSyncParameters",
"timebase",
(timebase - base::TimeTicks()).InSecondsF(),
"interval",
interval.InSecondsF());
client_->CommitVSyncParameters(timebase, interval);
}
// Forwarded to OutputSurfaceClient
void OutputSurface::SetNeedsRedrawRect(const gfx::Rect& damage_rect) {
TRACE_EVENT0("cc", "OutputSurface::SetNeedsRedrawRect");
client_->SetNeedsRedrawRect(damage_rect);
}
void OutputSurface::ReclaimResources(const CompositorFrameAck* ack) {
client_->ReclaimResources(ack);
}
void OutputSurface::DidLoseOutputSurface() {
TRACE_EVENT0("cc", "OutputSurface::DidLoseOutputSurface");
client_->DidLoseOutputSurface();
}
void OutputSurface::SetExternalStencilTest(bool enabled) {
external_stencil_test_enabled_ = enabled;
}
void OutputSurface::SetExternalDrawConstraints(
const gfx::Transform& transform,
const gfx::Rect& viewport,
const gfx::Rect& clip,
const gfx::Rect& viewport_rect_for_tile_priority,
const gfx::Transform& transform_for_tile_priority,
bool resourceless_software_draw) {
client_->SetExternalDrawConstraints(transform,
viewport,
clip,
viewport_rect_for_tile_priority,
transform_for_tile_priority,
resourceless_software_draw);
}
OutputSurface::~OutputSurface() {
if (context_provider_.get()) {
context_provider_->SetLostContextCallback(
ContextProvider::LostContextCallback());
context_provider_->SetMemoryPolicyChangedCallback(
ContextProvider::MemoryPolicyChangedCallback());
}
if (worker_context_provider_.get()) {
worker_context_provider_->SetLostContextCallback(
ContextProvider::LostContextCallback());
}
}
bool OutputSurface::HasExternalStencilTest() const {
return external_stencil_test_enabled_;
}
bool OutputSurface::BindToClient(OutputSurfaceClient* client) {
DCHECK(client);
client_ = client;
bool success = true;
if (context_provider_.get()) {
success = context_provider_->BindToCurrentThread();
if (success) {
context_provider_->SetLostContextCallback(base::Bind(
&OutputSurface::DidLoseOutputSurface, base::Unretained(this)));
context_provider_->SetMemoryPolicyChangedCallback(
base::Bind(&OutputSurface::SetMemoryPolicy, base::Unretained(this)));
}
}
if (success && worker_context_provider_.get()) {
success = worker_context_provider_->BindToCurrentThread();
if (success) {
worker_context_provider_->SetupLock();
// The destructor resets the context lost callback, so base::Unretained
// is safe, as long as the worker threads stop using the context before
// the output surface is destroyed.
worker_context_provider_->SetLostContextCallback(base::Bind(
&OutputSurface::DidLoseOutputSurface, base::Unretained(this)));
}
}
if (!success)
client_ = NULL;
return success;
}
void OutputSurface::EnsureBackbuffer() {
if (software_device_)
software_device_->EnsureBackbuffer();
}
void OutputSurface::DiscardBackbuffer() {
if (context_provider_.get())
context_provider_->ContextGL()->DiscardBackbufferCHROMIUM();
if (software_device_)
software_device_->DiscardBackbuffer();
}
void OutputSurface::Reshape(const gfx::Size& size, float scale_factor) {
if (size == surface_size_ && scale_factor == device_scale_factor_)
return;
surface_size_ = size;
device_scale_factor_ = scale_factor;
if (context_provider_.get()) {
context_provider_->ContextGL()->ResizeCHROMIUM(
size.width(), size.height(), scale_factor);
}
if (software_device_)
software_device_->Resize(size, scale_factor);
}
gfx::Size OutputSurface::SurfaceSize() const {
return surface_size_;
}
void OutputSurface::BindFramebuffer() {
DCHECK(context_provider_.get());
context_provider_->ContextGL()->BindFramebuffer(GL_FRAMEBUFFER, 0);
}
void OutputSurface::PostSwapBuffersComplete() {
base::ThreadTaskRunnerHandle::Get()->PostTask(
FROM_HERE, base::Bind(&OutputSurface::OnSwapBuffersComplete,
weak_ptr_factory_.GetWeakPtr()));
}
// We don't post tasks bound to the client directly since they might run
// after the OutputSurface has been destroyed.
void OutputSurface::OnSwapBuffersComplete() {
client_->DidSwapBuffersComplete();
}
void OutputSurface::SetMemoryPolicy(const ManagedMemoryPolicy& policy) {
TRACE_EVENT1("cc", "OutputSurface::SetMemoryPolicy",
"bytes_limit_when_visible", policy.bytes_limit_when_visible);
// Just ignore the memory manager when it says to set the limit to zero
// bytes. This will happen when the memory manager thinks that the renderer
// is not visible (which the renderer knows better).
if (policy.bytes_limit_when_visible)
client_->SetMemoryPolicy(policy);
}
OverlayCandidateValidator* OutputSurface::GetOverlayCandidateValidator() const {
return nullptr;
}
void OutputSurface::SetWorkerContextShouldAggressivelyFreeResources(
bool aggressively_free_resources) {
TRACE_EVENT1("cc",
"OutputSurface::SetWorkerContextShouldAggressivelyFreeResources",
"aggressively_free_resources", aggressively_free_resources);
if (auto* context_provider = worker_context_provider()) {
// The context lock must be held while accessing the worker context.
base::AutoLock context_lock(*context_provider->GetLock());
// Allow context to bind to current thread.
context_provider->DetachFromThread();
if (aggressively_free_resources) {
context_provider->DeleteCachedResources();
}
if (auto* context_support = context_provider->ContextSupport()) {
context_support->SetAggressivelyFreeResources(
aggressively_free_resources);
}
// Allow context to bind to other threads.
context_provider->DetachFromThread();
}
}
bool OutputSurface::SurfaceIsSuspendForRecycle() const {
return false;
}
} // namespace cc
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