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// Copyright 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 "stdafx.h"
#include <corewindow.h>
#include <windows.applicationmodel.core.h>
#include <windows.graphics.display.h>
#include "win8/metro_driver/direct3d_helper.h"
#include "base/logging.h"
#include "base/win/windows_version.h"
#include "ui/gfx/win/dpi.h"
#include "win8/metro_driver/winrt_utils.h"
namespace {
void CheckIfFailed(HRESULT hr) {
DCHECK(!FAILED(hr));
if (FAILED(hr))
DVLOG(0) << "Direct3D call failed, hr = " << hr;
}
float ConvertDipsToPixels(float dips) {
return floor(dips * gfx::GetDPIScale() + 0.5f);
}
}
namespace metro_driver {
Direct3DHelper::Direct3DHelper() {
}
Direct3DHelper::~Direct3DHelper() {
}
void Direct3DHelper::Initialize(winui::Core::ICoreWindow* window) {
window_ = window;
CreateDeviceResources();
CreateWindowSizeDependentResources();
}
// TODO(scottmg): Need to handle resize messages and recreation.
void Direct3DHelper::CreateDeviceResources() {
unsigned int creation_flags = D3D11_CREATE_DEVICE_BGRA_SUPPORT;
D3D_FEATURE_LEVEL feature_levels[] = {
D3D_FEATURE_LEVEL_11_1,
D3D_FEATURE_LEVEL_11_0,
D3D_FEATURE_LEVEL_10_1,
D3D_FEATURE_LEVEL_10_0,
D3D_FEATURE_LEVEL_9_3,
D3D_FEATURE_LEVEL_9_2,
D3D_FEATURE_LEVEL_9_1,
};
mswr::ComPtr<ID3D11Device> device;
mswr::ComPtr<ID3D11DeviceContext> context;
CheckIfFailed(
D3D11CreateDevice(
nullptr,
D3D_DRIVER_TYPE_HARDWARE,
nullptr,
creation_flags,
feature_levels,
ARRAYSIZE(feature_levels),
D3D11_SDK_VERSION,
&device,
&feature_level_,
&context));
CheckIfFailed(device.As(&d3d_device_));
CheckIfFailed(context.As(&d3d_context_));
}
void Direct3DHelper::CreateWindowSizeDependentResources() {
float window_width = 0;
float window_height = 0;
if (base::win::GetVersion() >= base::win::VERSION_WIN8) {
// Windows 8 returns in DIPs.
CheckIfFailed(window_->get_Bounds(&window_bounds_));
window_width = ConvertDipsToPixels(window_width);
window_height = ConvertDipsToPixels(window_height);
}
// TODO(scottmg): Orientation.
if (swap_chain_ != nullptr) {
// TODO(scottmg): Resize if it already exists.
NOTIMPLEMENTED();
} else {
DXGI_SWAP_CHAIN_DESC1 swap_chain_desc = { 0 };
swap_chain_desc.Width = window_width;
swap_chain_desc.Height = window_height;
swap_chain_desc.Format = DXGI_FORMAT_B8G8R8A8_UNORM;
swap_chain_desc.Stereo = false;
swap_chain_desc.SampleDesc.Count = 1;
swap_chain_desc.SampleDesc.Quality = 0;
swap_chain_desc.BufferUsage = DXGI_USAGE_RENDER_TARGET_OUTPUT;
swap_chain_desc.BufferCount = 2; // TODO(scottmg): Probably 1 is fine.
swap_chain_desc.Scaling = DXGI_SCALING_NONE;
swap_chain_desc.SwapEffect = DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL;
swap_chain_desc.Flags = 0;
mswr::ComPtr<IDXGIDevice1> dxgi_device;
CheckIfFailed(d3d_device_.As(&dxgi_device));
mswr::ComPtr<IDXGIAdapter> dxgi_adapter;
CheckIfFailed(dxgi_device->GetAdapter(&dxgi_adapter));
mswr::ComPtr<IDXGIFactory2> dxgi_factory;
CheckIfFailed(dxgi_adapter->GetParent(
__uuidof(IDXGIFactory2), &dxgi_factory));
if (base::win::GetVersion() >= base::win::VERSION_WIN8) {
// On Win8 we need the CoreWindow interface to create the Swapchain.
CheckIfFailed(dxgi_factory->CreateSwapChainForCoreWindow(
d3d_device_.Get(),
reinterpret_cast<IUnknown*>(window_),
&swap_chain_desc,
nullptr,
&swap_chain_));
} else {
// On Win7 we need the raw HWND to create the Swapchain.
mswr::ComPtr<ICoreWindowInterop> interop;
CheckIfFailed(window_->QueryInterface(interop.GetAddressOf()));
HWND window = NULL;
interop->get_WindowHandle(&window);
swap_chain_desc.Scaling = DXGI_SCALING_STRETCH;
swap_chain_desc.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
CheckIfFailed(dxgi_factory->CreateSwapChainForHwnd(
d3d_device_.Get(),
window,
&swap_chain_desc,
nullptr,
nullptr,
&swap_chain_));
// Prevent DXGI from monitoring an application message queue and thus
// attempt mode changes. For e.g. Alt + Enter by default causes
// DXGI to attempt to take the window fullscreen.
CheckIfFailed(dxgi_factory->MakeWindowAssociation(
window, DXGI_MWA_NO_WINDOW_CHANGES));
}
}
}
} // namespace metro_driver
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