111 lines
3.1 KiB
C++
111 lines
3.1 KiB
C++
#include "stdafx.h"
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#include "OutputDevice.h"
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#include "DisplayMode.h"
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OutputDevice::OutputDevice(IDXGIOutput* ar_Output_, ID3D10Device* ar_Device_)
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: m_Output(ar_Output_)
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, m_Device(ar_Device_)
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, m_HasEnumerated(false)
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, m_DesiredWidth(0)
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, m_DesiredHeight(0)
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, m_DesiredRefreshRate(0)
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, m_DesiredFormat(DataFormat::Unknown)
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{
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if (m_Output != NULL)
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{
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m_Output->AddRef();
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m_Output->GetDesc(&m_OutputDesc);
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}
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}
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OutputDevice::~OutputDevice()
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{
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for (uint32 i = 0; i < m_DisplayModes.size(); ++i)
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delete m_DisplayModes[i];
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if (m_Output != NULL)
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m_Output->Release();
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m_Output = NULL;
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}
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bool OutputDevice::TryEnumerate(uint32 argDesiredWidth, uint32 argDesiredHeight, uint32 argDesiredRefreshRate, DataFormat::Enumeration argDesiredFormat)
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{
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if (m_HasEnumerated)
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{
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if (m_DesiredWidth == argDesiredWidth ||
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m_DesiredHeight == argDesiredHeight ||
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m_DesiredRefreshRate == argDesiredRefreshRate ||
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m_DesiredFormat == argDesiredFormat)
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{
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return true;
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}
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else
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m_HasEnumerated = false;
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}
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for (int formatIndex = (int)argDesiredFormat; formatIndex <= (argDesiredFormat == DataFormat::Unknown ? DXGI_FORMAT_B8G8R8X8_UNORM : (int)argDesiredFormat); ++formatIndex)
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{
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DXGI_FORMAT format = (DXGI_FORMAT)formatIndex;
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uint32 flags = DXGI_ENUM_MODES_SCALING;
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uint32 displayModeCount = 0;
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if (m_Output->GetDisplayModeList(format, flags, &displayModeCount, 0) == S_OK && displayModeCount > 0)
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{
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DXGI_MODE_DESC* descs = new DXGI_MODE_DESC[displayModeCount];
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if (m_Output->GetDisplayModeList(format, flags, &displayModeCount, descs) == S_OK)
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{
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for (uint32 i = 0; i < displayModeCount; ++i)
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{
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IDisplayMode* displayMode = new DisplayMode(descs[i]);
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bool keepDisplayMode = false;
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if ((argDesiredWidth == 0 || argDesiredWidth <= displayMode->get_Width()) &&
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(argDesiredHeight == 0 || argDesiredHeight <= displayMode->get_Height()) &&
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(argDesiredRefreshRate == 0 || argDesiredRefreshRate <= displayMode->get_RefreshRate()) &&
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(argDesiredFormat == DataFormat::Unknown || argDesiredFormat == displayMode->get_Format()))
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{
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if (m_Device != NULL)
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{
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uint32 supportBits = 0;
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m_Device->CheckFormatSupport((DXGI_FORMAT)format, &supportBits);
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if ((supportBits & D3D10_FORMAT_SUPPORT_DISPLAY) != 0)
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keepDisplayMode = true;
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}
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else
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keepDisplayMode = true;
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}
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if (keepDisplayMode)
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m_DisplayModes.push_back(displayMode);
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else
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delete displayMode;
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}
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delete [] descs;
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}
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}
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}
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m_DesiredWidth = argDesiredWidth;
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m_DesiredHeight = argDesiredHeight;
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m_DesiredRefreshRate = argDesiredRefreshRate;
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m_DesiredFormat = argDesiredFormat;
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m_HasEnumerated = !m_DisplayModes.empty();
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return m_HasEnumerated;
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}
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IDisplayMode* OutputDevice::FindBestDisplayMode(bool argAllowToEnumerate, uint32 argDesiredWidth, uint32 argDesiredHeight, uint32 argDesiredRefreshRate, DataFormat::Enumeration argDesiredFormat)
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{
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if (argAllowToEnumerate && !this->TryEnumerate(argDesiredWidth, argDesiredHeight, argDesiredRefreshRate, argDesiredFormat))
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return NULL;
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if (!m_HasEnumerated)
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return NULL;
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return m_DisplayModes.back();
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}
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