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SternXD
63 lines
1.9 KiB
C++
63 lines
1.9 KiB
C++
#pragma once
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#include <ppltasks.h> // For create_task
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namespace DX
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{
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inline void ThrowIfFailed(HRESULT hr)
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{
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if (FAILED(hr))
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{
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// Set a breakpoint on this line to catch Win32 API errors.
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winrt::throw_hresult(hr);
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}
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}
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// Function that reads from a binary file asynchronously.
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inline Concurrency::task<std::vector<uint8_t>> ReadDataAsync(const std::wstring& filename)
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{
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using namespace Concurrency;
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auto folder = winrt::Windows::ApplicationModel::Package::Current().InstalledLocation();
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return create_task([folder, filename]() -> std::vector<uint8_t> {
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auto file = folder.GetFileAsync(winrt::hstring(filename)).get();
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auto buffer = winrt::Windows::Storage::FileIO::ReadBufferAsync(file).get();
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std::vector<uint8_t> returnBuffer(buffer.Length());
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auto reader = winrt::Windows::Storage::Streams::DataReader::FromBuffer(buffer);
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reader.ReadBytes(returnBuffer);
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return returnBuffer;
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});
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}
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// Converts a length in device-independent pixels (DIPs) to a length in physical pixels.
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inline float ConvertDipsToPixels(float dips, float dpi)
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{
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static const float dipsPerInch = 96.0f;
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return floorf(dips * dpi / dipsPerInch + 0.5f); // Round to nearest integer.
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}
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#if defined(_DEBUG)
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// Check for SDK Layer support.
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inline bool SdkLayersAvailable()
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{
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HRESULT hr = D3D11CreateDevice(
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nullptr,
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D3D_DRIVER_TYPE_NULL, // There is no need to create a real hardware device.
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0,
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D3D11_CREATE_DEVICE_DEBUG, // Check for the SDK layers.
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nullptr, // Any feature level will do.
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0,
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D3D11_SDK_VERSION, // Always set this to D3D11_SDK_VERSION for Windows Store apps.
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nullptr, // No need to keep the D3D device reference.
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nullptr, // No need to know the feature level.
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nullptr // No need to keep the D3D device context reference.
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);
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return SUCCEEDED(hr);
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}
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#endif
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}
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