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// Copyright (c) 2012 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 "gpu/blink/webgraphicscontext3d_in_process_command_buffer_impl.h"
#include <GLES2/gl2.h>
#ifndef GL_GLEXT_PROTOTYPES
#define GL_GLEXT_PROTOTYPES 1
#endif
#include <GLES2/gl2ext.h>
#include <GLES2/gl2extchromium.h>
#include <string>
#include "base/atomicops.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/callback.h"
#include "base/logging.h"
#include "gpu/command_buffer/client/gles2_implementation.h"
#include "gpu/command_buffer/common/gles2_cmd_utils.h"
#include "gpu/skia_bindings/gl_bindings_skia_cmd_buffer.h"
#include "ui/gfx/geometry/size.h"
#include "ui/gl/gl_implementation.h"
using blink::WGC3Denum;
using gpu::gles2::GLES2Implementation;
using gpu::GLInProcessContext;
namespace gpu_blink {
// static
scoped_ptr<WebGraphicsContext3DInProcessCommandBufferImpl>
WebGraphicsContext3DInProcessCommandBufferImpl::CreateViewContext(
const blink::WebGraphicsContext3D::Attributes& attributes,
bool lose_context_when_out_of_memory,
gfx::AcceleratedWidget window) {
DCHECK_NE(gfx::GetGLImplementation(), gfx::kGLImplementationNone);
bool is_offscreen = false;
return make_scoped_ptr(new WebGraphicsContext3DInProcessCommandBufferImpl(
scoped_ptr< ::gpu::GLInProcessContext>(),
attributes,
lose_context_when_out_of_memory,
is_offscreen,
window));
}
// static
scoped_ptr<WebGraphicsContext3DInProcessCommandBufferImpl>
WebGraphicsContext3DInProcessCommandBufferImpl::CreateOffscreenContext(
const blink::WebGraphicsContext3D::Attributes& attributes,
bool lose_context_when_out_of_memory) {
bool is_offscreen = true;
return make_scoped_ptr(new WebGraphicsContext3DInProcessCommandBufferImpl(
scoped_ptr< ::gpu::GLInProcessContext>(),
attributes,
lose_context_when_out_of_memory,
is_offscreen,
gfx::kNullAcceleratedWidget));
}
scoped_ptr<WebGraphicsContext3DInProcessCommandBufferImpl>
WebGraphicsContext3DInProcessCommandBufferImpl::WrapContext(
scoped_ptr< ::gpu::GLInProcessContext> context,
const blink::WebGraphicsContext3D::Attributes& attributes) {
bool lose_context_when_out_of_memory = false; // Not used.
bool is_offscreen = true; // Not used.
return make_scoped_ptr(new WebGraphicsContext3DInProcessCommandBufferImpl(
context.Pass(),
attributes,
lose_context_when_out_of_memory,
is_offscreen,
gfx::kNullAcceleratedWidget /* window. Not used. */));
}
WebGraphicsContext3DInProcessCommandBufferImpl::
WebGraphicsContext3DInProcessCommandBufferImpl(
scoped_ptr< ::gpu::GLInProcessContext> context,
const blink::WebGraphicsContext3D::Attributes& attributes,
bool lose_context_when_out_of_memory,
bool is_offscreen,
gfx::AcceleratedWidget window)
: share_resources_(attributes.shareResources),
is_offscreen_(is_offscreen),
window_(window),
context_(context.Pass()) {
ConvertAttributes(attributes, &attribs_);
attribs_.lose_context_when_out_of_memory = lose_context_when_out_of_memory;
}
WebGraphicsContext3DInProcessCommandBufferImpl::
~WebGraphicsContext3DInProcessCommandBufferImpl() {
}
size_t WebGraphicsContext3DInProcessCommandBufferImpl::GetMappedMemoryLimit() {
return context_->GetMappedMemoryLimit();
}
bool WebGraphicsContext3DInProcessCommandBufferImpl::MaybeInitializeGL() {
if (initialized_)
return true;
if (initialize_failed_)
return false;
if (!context_) {
// TODO(kbr): More work will be needed in this implementation to
// properly support GPU switching. Like in the out-of-process
// command buffer implementation, all previously created contexts
// will need to be lost either when the first context requesting the
// discrete GPU is created, or the last one is destroyed.
gfx::GpuPreference gpu_preference = gfx::PreferDiscreteGpu;
context_.reset(GLInProcessContext::Create(
NULL, /* service */
NULL, /* surface */
is_offscreen_,
window_,
gfx::Size(1, 1),
NULL, /* share_context */
share_resources_,
attribs_,
gpu_preference,
::gpu::GLInProcessContextSharedMemoryLimits(),
nullptr,
nullptr));
}
if (context_) {
base::Closure context_lost_callback = base::Bind(
&WebGraphicsContext3DInProcessCommandBufferImpl::OnContextLost,
base::Unretained(this));
context_->SetContextLostCallback(context_lost_callback);
} else {
initialize_failed_ = true;
return false;
}
real_gl_ = context_->GetImplementation();
setGLInterface(real_gl_);
initialized_ = true;
return true;
}
bool
WebGraphicsContext3DInProcessCommandBufferImpl::InitializeOnCurrentThread() {
if (!MaybeInitializeGL())
return false;
return context_ && !isContextLost();
}
void WebGraphicsContext3DInProcessCommandBufferImpl::SetLock(base::Lock* lock) {
context_->SetLock(lock);
}
::gpu::ContextSupport*
WebGraphicsContext3DInProcessCommandBufferImpl::GetContextSupport() {
return real_gl_;
}
void WebGraphicsContext3DInProcessCommandBufferImpl::OnContextLost() {
if (context_lost_callback_) {
context_lost_callback_->onContextLost();
}
}
} // namespace gpu_blink
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