//// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF
//// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO
//// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A
//// PARTICULAR PURPOSE.
////
//// Copyright (c) Microsoft Corporation. All rights reserved

#pragma once


namespace DX
{
    inline void ThrowIfFailed(HRESULT hr)
    {
        if (FAILED(hr))
        {
            struct ComException
            {
                HRESULT const hr;
                ComException(HRESULT const value) : hr(value) {}
            };

            if (S_OK != hr)
            {
                throw ComException(hr);
            }
        }
    }


    // Converts a length in device-independent pixels (DIPs) to a length in physical pixels.
    inline float ConvertDipsToPixels(float dips, float dpi)
    {
        static const float dipsPerInch = 96.0f;
        return floorf(dips * dpi / dipsPerInch + 0.5f); // Round to nearest integer.
    }

#if defined(_DEBUG)
    // Check for SDK Layer support.
    inline bool SdkLayersAvailable()
    {
        HRESULT hr = D3D11CreateDevice(
            nullptr,
            D3D_DRIVER_TYPE_NULL,       // There is no need to create a real hardware device.
            0,
            D3D11_CREATE_DEVICE_DEBUG,  // Check for the SDK layers.
            nullptr,                    // Any feature level will do.
            0,
            D3D11_SDK_VERSION,          // Always set this to D3D11_SDK_VERSION for Windows Store apps.
            nullptr,                    // No need to keep the D3D device reference.
            nullptr,                    // No need to know the feature level.
            nullptr                     // No need to keep the D3D device context reference.
            );

        return SUCCEEDED(hr);
    }
#endif
}