blob: 970ec386067ce002b90bd7327adf12fa77f7bc0b [file] [log] [blame]
// 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 "content/common/gpu/client/grcontext_for_webgraphicscontext3d.h"
#include "base/lazy_instance.h"
#include "base/trace_event/trace_event.h"
#include "gpu/blink/webgraphicscontext3d_impl.h"
#include "gpu/command_buffer/client/gles2_lib.h"
#include "third_party/skia/include/gpu/GrContext.h"
#include "third_party/skia/include/gpu/gl/GrGLInterface.h"
using gpu_blink::WebGraphicsContext3DImpl;
namespace content {
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;
void BindWebGraphicsContext3DGLContextCallback(const GrGLInterface* interface) {
gles2::SetGLContext(reinterpret_cast<WebGraphicsContext3DImpl*>(
interface->fCallbackData)->GetGLInterface());
}
} // namespace anonymous
GrContextForWebGraphicsContext3D::GrContextForWebGraphicsContext3D(
WebGraphicsContext3DImpl* context3d) {
if (!context3d)
return;
// Ensure the gles2 library is initialized first in a thread safe way.
g_gles2_initializer.Get();
gles2::SetGLContext(context3d->GetGLInterface());
skia::RefPtr<GrGLInterface> interface = skia::AdoptRef(
context3d->createGrGLInterface());
if (!interface)
return;
interface->fCallback = BindWebGraphicsContext3DGLContextCallback;
interface->fCallbackData =
reinterpret_cast<GrGLInterfaceCallbackData>(context3d);
gr_context_ = skia::AdoptRef(GrContext::Create(
kOpenGL_GrBackend,
reinterpret_cast<GrBackendContext>(interface.get())));
if (gr_context_) {
// The limit of the number of GPU resources we hold in the GrContext's
// GPU cache.
static const int kMaxGaneshResourceCacheCount = 2048;
// The limit of the bytes allocated toward GPU resources in the GrContext's
// GPU cache.
static const size_t kMaxGaneshResourceCacheBytes = 96 * 1024 * 1024;
gr_context_->setResourceCacheLimits(kMaxGaneshResourceCacheCount,
kMaxGaneshResourceCacheBytes);
}
}
GrContextForWebGraphicsContext3D::~GrContextForWebGraphicsContext3D() {
}
void GrContextForWebGraphicsContext3D::OnLostContext() {
if (gr_context_)
gr_context_->abandonContext();
}
void GrContextForWebGraphicsContext3D::FreeGpuResources() {
if (gr_context_) {
TRACE_EVENT_INSTANT0("gpu", "GrContext::freeGpuResources", \
TRACE_EVENT_SCOPE_THREAD);
gr_context_->freeGpuResources();
}
}
} // namespace content