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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 "win8/metro_driver/direct3d_helper.h"
#include "win8/metro_driver/winrt_utils.h"
#include "base/logging.h"
#include <windows.graphics.display.h>
namespace {
void CheckIfFailed(HRESULT hr) {
DCHECK(!FAILED(hr));
if (FAILED(hr))
DVLOG(0) << "Direct3D call failed, hr = " << hr;
}
float GetLogicalDpi() {
mswr::ComPtr<wingfx::Display::IDisplayPropertiesStatics> display_properties;
CheckIfFailed(winrt_utils::CreateActivationFactory(
RuntimeClass_Windows_Graphics_Display_DisplayProperties,
display_properties.GetAddressOf()));
float dpi = 0.0;
CheckIfFailed(display_properties->get_LogicalDpi(&dpi));
return dpi;
}
float ConvertDipsToPixels(float dips) {
static const float dips_per_inch = 96.f;
float logical_dpi = GetLogicalDpi();
return floor(dips * logical_dpi / dips_per_inch + 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() {
CheckIfFailed(window_->get_Bounds(&window_bounds_));
float window_width = ConvertDipsToPixels(window_bounds_.Width);
float window_height = ConvertDipsToPixels(window_bounds_.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));
CheckIfFailed(dxgi_factory->CreateSwapChainForCoreWindow(
d3d_device_.Get(),
reinterpret_cast<IUnknown*>(window_),
&swap_chain_desc,
nullptr,
&swap_chain_));
}
}
} // namespace metro_driver
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