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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 "ui/compositor/test/in_process_context_provider.h"
#include "base/bind.h"
#include "base/callback_helpers.h"
#include "base/lazy_instance.h"
#include "base/strings/stringprintf.h"
#include "base/trace_event/trace_event.h"
#include "cc/output/managed_memory_policy.h"
#include "gpu/command_buffer/client/gl_in_process_context.h"
#include "gpu/command_buffer/client/gles2_implementation.h"
#include "gpu/command_buffer/client/gles2_lib.h"
#include "gpu/skia_bindings/gl_bindings_skia_cmd_buffer.h"
#include "third_party/skia/include/gpu/GrContext.h"
#include "third_party/skia/include/gpu/gl/GrGLInterface.h"
namespace ui {
namespace {
// Singleton used to initialize and terminate the gles2 library.
class GLES2Initializer {
public:
GLES2Initializer() { gles2::Initialize(); }
~GLES2Initializer() { gles2::Terminate(); }
private:
DISALLOW_COPY_AND_ASSIGN(GLES2Initializer);
};
base::LazyInstance<GLES2Initializer> g_gles2_initializer =
LAZY_INSTANCE_INITIALIZER;
} // namespace
// static
scoped_refptr<InProcessContextProvider> InProcessContextProvider::Create(
const gpu::gles2::ContextCreationAttribHelper& attribs,
gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
gpu::ImageFactory* image_factory,
gfx::AcceleratedWidget window,
const std::string& debug_name) {
return new InProcessContextProvider(
attribs, gpu_memory_buffer_manager, image_factory, window, debug_name);
}
// static
scoped_refptr<InProcessContextProvider>
InProcessContextProvider::CreateOffscreen(
gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
gpu::ImageFactory* image_factory) {
gpu::gles2::ContextCreationAttribHelper attribs;
attribs.alpha_size = 8;
attribs.blue_size = 8;
attribs.green_size = 8;
attribs.red_size = 8;
attribs.depth_size = 0;
attribs.stencil_size = 8;
attribs.samples = 0;
attribs.sample_buffers = 0;
attribs.fail_if_major_perf_caveat = false;
attribs.bind_generates_resource = false;
return new InProcessContextProvider(attribs, gpu_memory_buffer_manager,
image_factory,
gfx::kNullAcceleratedWidget, "Offscreen");
}
InProcessContextProvider::InProcessContextProvider(
const gpu::gles2::ContextCreationAttribHelper& attribs,
gpu::GpuMemoryBufferManager* gpu_memory_buffer_manager,
gpu::ImageFactory* image_factory,
gfx::AcceleratedWidget window,
const std::string& debug_name)
: attribs_(attribs),
gpu_memory_buffer_manager_(gpu_memory_buffer_manager),
image_factory_(image_factory),
window_(window),
debug_name_(debug_name),
destroyed_(false) {
DCHECK(main_thread_checker_.CalledOnValidThread());
context_thread_checker_.DetachFromThread();
}
InProcessContextProvider::~InProcessContextProvider() {
DCHECK(main_thread_checker_.CalledOnValidThread() ||
context_thread_checker_.CalledOnValidThread());
}
bool InProcessContextProvider::BindToCurrentThread() {
// This is called on the thread the context will be used.
DCHECK(context_thread_checker_.CalledOnValidThread());
if (!context_) {
gfx::GpuPreference gpu_preference = gfx::PreferDiscreteGpu;
context_.reset(gpu::GLInProcessContext::Create(
nullptr, /* service */
nullptr, /* surface */
!window_, /* is_offscreen */
window_, gfx::Size(1, 1), nullptr, /* share_context */
true, /* share_resources */
attribs_, gpu_preference, gpu::GLInProcessContextSharedMemoryLimits(),
gpu_memory_buffer_manager_, image_factory_));
if (!context_)
return false;
context_->SetContextLostCallback(base::Bind(
&InProcessContextProvider::OnLostContext, base::Unretained(this)));
}
capabilities_.gpu = context_->GetImplementation()->capabilities();
std::string unique_context_name =
base::StringPrintf("%s-%p", debug_name_.c_str(), context_.get());
context_->GetImplementation()->TraceBeginCHROMIUM(
"gpu_toplevel", unique_context_name.c_str());
return true;
}
cc::ContextProvider::Capabilities
InProcessContextProvider::ContextCapabilities() {
DCHECK(context_thread_checker_.CalledOnValidThread());
return capabilities_;
}
gpu::gles2::GLES2Interface* InProcessContextProvider::ContextGL() {
DCHECK(context_thread_checker_.CalledOnValidThread());
return context_->GetImplementation();
}
gpu::ContextSupport* InProcessContextProvider::ContextSupport() {
DCHECK(context_thread_checker_.CalledOnValidThread());
return context_->GetImplementation();
}
static void BindGrContextCallback(const GrGLInterface* interface) {
cc::ContextProvider* context_provider =
reinterpret_cast<InProcessContextProvider*>(interface->fCallbackData);
gles2::SetGLContext(context_provider->ContextGL());
}
class GrContext* InProcessContextProvider::GrContext() {
DCHECK(context_thread_checker_.CalledOnValidThread());
if (gr_context_)
return gr_context_.get();
// The GrGLInterface factory will make GL calls using the C GLES2 interface.
// Make sure the gles2 library is initialized first on exactly one thread.
g_gles2_initializer.Get();
gles2::SetGLContext(ContextGL());
skia::RefPtr<GrGLInterface> interface =
skia::AdoptRef(skia_bindings::CreateCommandBufferSkiaGLBinding());
interface->fCallback = BindGrContextCallback;
interface->fCallbackData = reinterpret_cast<GrGLInterfaceCallbackData>(this);
gr_context_ = skia::AdoptRef(GrContext::Create(
kOpenGL_GrBackend, reinterpret_cast<GrBackendContext>(interface.get())));
return gr_context_.get();
}
void InProcessContextProvider::InvalidateGrContext(uint32_t state) {
DCHECK(context_thread_checker_.CalledOnValidThread());
if (gr_context_)
gr_context_.get()->resetContext(state);
}
void InProcessContextProvider::SetupLock() {
}
base::Lock* InProcessContextProvider::GetLock() {
return &context_lock_;
}
void InProcessContextProvider::VerifyContexts() {
}
void InProcessContextProvider::DeleteCachedResources() {
DCHECK(context_thread_checker_.CalledOnValidThread());
if (gr_context_) {
TRACE_EVENT_INSTANT0("gpu", "GrContext::freeGpuResources",
TRACE_EVENT_SCOPE_THREAD);
gr_context_->freeGpuResources();
}
}
bool InProcessContextProvider::DestroyedOnMainThread() {
DCHECK(main_thread_checker_.CalledOnValidThread());
base::AutoLock lock(destroyed_lock_);
return destroyed_;
}
void InProcessContextProvider::SetLostContextCallback(
const LostContextCallback& lost_context_callback) {
lost_context_callback_ = lost_context_callback;
}
void InProcessContextProvider::SetMemoryPolicyChangedCallback(
const MemoryPolicyChangedCallback& memory_policy_changed_callback) {
// There's no memory manager for the in-process implementation.
}
void InProcessContextProvider::OnLostContext() {
DCHECK(context_thread_checker_.CalledOnValidThread());
{
base::AutoLock lock(destroyed_lock_);
if (destroyed_)
return;
destroyed_ = true;
}
if (!lost_context_callback_.is_null())
base::ResetAndReturn(&lost_context_callback_).Run();
if (gr_context_)
gr_context_->abandonContext();
}
} // namespace ui
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