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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/demos/framework/window.h"
#include "base/bind.h"
#include "base/bind_helpers.h"
#include "base/memory/ref_counted.h"
#include "base/memory/scoped_ptr.h"
#include "gpu/command_buffer/client/gles2_implementation.h"
#include "gpu/command_buffer/client/gles2_lib.h"
#include "gpu/command_buffer/client/transfer_buffer.h"
#include "gpu/command_buffer/service/context_group.h"
#include "gpu/demos/framework/demo.h"
#include "gpu/demos/framework/demo_factory.h"
using gpu::Buffer;
using gpu::CommandBufferService;
using gpu::GpuScheduler;
using gpu::gles2::GLES2CmdHelper;
using gpu::gles2::GLES2Implementation;
using gpu::TransferBuffer;
namespace {
const int32 kCommandBufferSize = 1024 * 1024;
const int32 kTransferBufferSize = 512 * 1024;
} // namespace.
namespace gpu {
namespace demos {
Window::Window()
: window_handle_(NULL),
demo_(CreateDemo()) {
}
Window::~Window() {
if (decoder_.get()) {
decoder_->Destroy();
}
}
bool Window::Init(int width, int height) {
window_handle_ = CreateNativeWindow(demo_->Title(), width, height);
if (window_handle_ == NULL)
return false;
if (!CreateRenderContext(PluginWindow(window_handle_)))
return false;
demo_->Resize(width, height);
return demo_->InitGL();
}
void Window::OnPaint() {
demo_->Draw();
::gles2::GetGLContext()->SwapBuffers();
}
bool Window::CreateRenderContext(gfx::AcceleratedWidget hwnd) {
command_buffer_.reset(new CommandBufferService);
if (!command_buffer_->Initialize()) {
return false;
}
gpu::gles2::ContextGroup::Ref group(new gpu::gles2::ContextGroup(true));
decoder_.reset(gpu::gles2::GLES2Decoder::Create(group.get()));
if (!decoder_.get())
return false;
gpu_scheduler_.reset(new gpu::GpuScheduler(command_buffer_.get(),
decoder_.get(),
NULL));
decoder_->set_engine(gpu_scheduler_.get());
surface_ = gfx::GLSurface::CreateViewGLSurface(false, hwnd);
if (!surface_.get())
return false;
context_ = gfx::GLContext::CreateGLContext(
NULL, surface_.get(), gfx::PreferDiscreteGpu);
if (!context_.get())
return false;
std::vector<int32> attribs;
if (!decoder_->Initialize(surface_.get(),
context_.get(),
gfx::Size(),
gpu::gles2::DisallowedFeatures(),
NULL,
attribs)) {
return false;
}
command_buffer_->SetPutOffsetChangeCallback(
base::Bind(&GpuScheduler::PutChanged,
base::Unretained(gpu_scheduler_.get())));
command_buffer_->SetGetBufferChangeCallback(
base::Bind(&GpuScheduler::SetGetBuffer,
base::Unretained(gpu_scheduler_.get())));
gles2_cmd_helper_.reset(new GLES2CmdHelper(command_buffer_.get()));
if (!gles2_cmd_helper_->Initialize(kCommandBufferSize))
return false;
transfer_buffer_.reset(new gpu::TransferBuffer(gles2_cmd_helper_.get()));
::gles2::Initialize();
GLES2Implementation* gles2_implementation = new GLES2Implementation(
gles2_cmd_helper_.get(),
transfer_buffer_.get(),
false,
true);
::gles2::SetGLContext(gles2_implementation);
if (!gles2_implementation->Initialize(
kTransferBufferSize,
kTransferBufferSize,
kTransferBufferSize)) {
return false;
}
return true;
}
} // namespace demos
} // namespace gpu
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