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Use DXGI_SWAP_CHAIN_DESC1 if available for additional scaling options. (#3370)

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Matt Tytel 2024-10-31 22:37:30 -04:00 committed by GitHub
parent f534946822
commit cc789e83a6
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GPG Key ID: B5690EEEBB952194
1 changed files with 42 additions and 51 deletions
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93
src/dxgi.cpp
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@ -469,56 +469,6 @@ namespace bgfx
{
HRESULT hr = S_OK;
uint32_t scdFlags = _scd.flags;
#if BX_PLATFORM_LINUX || BX_PLATFORM_WINDOWS
IDXGIFactory5* factory5;
hr = m_factory->QueryInterface(IID_IDXGIFactory5, (void**)&factory5);
if (SUCCEEDED(hr) )
{
BOOL allowTearing = false;
// BK - CheckFeatureSupport with DXGI_FEATURE_PRESENT_ALLOW_TEARING
// will crash on pre Windows 8. Issue #1356.
hr = factory5->CheckFeatureSupport(DXGI_FEATURE_PRESENT_ALLOW_TEARING, &allowTearing, sizeof(allowTearing) );
BX_TRACE("Allow tearing is %ssupported.", allowTearing ? "" : "not ");
scdFlags |= allowTearing ? DXGI_SWAP_CHAIN_FLAG_ALLOW_TEARING : 0;
scdFlags |= false
|| _scd.swapEffect == DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL
|| _scd.swapEffect == DXGI_SWAP_EFFECT_FLIP_DISCARD
? 0 // DXGI_SWAP_CHAIN_FLAG_FRAME_LATENCY_WAITABLE_OBJECT
: 0
;
m_tearingSupported = allowTearing;
DX_RELEASE_I(factory5);
}
DXGI_SWAP_CHAIN_DESC scd;
scd.BufferDesc.Width = _scd.width;
scd.BufferDesc.Height = _scd.height;
scd.BufferDesc.RefreshRate.Numerator = 1;
scd.BufferDesc.RefreshRate.Denominator = 60;
scd.BufferDesc.Format = _scd.format;
scd.BufferDesc.ScanlineOrdering = DXGI_MODE_SCANLINE_ORDER_UNSPECIFIED;
scd.BufferDesc.Scaling = DXGI_MODE_SCALING_UNSPECIFIED;
scd.SampleDesc.Count = 1;
scd.SampleDesc.Quality = 0;
scd.BufferUsage = _scd.bufferUsage;
scd.BufferCount = _scd.bufferCount;
scd.OutputWindow = (HWND)_scd.nwh;
scd.Windowed = _scd.windowed;
scd.SwapEffect = _scd.swapEffect;
scd.Flags = scdFlags;
hr = m_factory->CreateSwapChain(
_device
, &scd
, reinterpret_cast<IDXGISwapChain**>(_swapChain)
);
#else
DXGI_SWAP_CHAIN_DESC1 scd;
scd.Width = _scd.width;
scd.Height = _scd.height;
@ -531,8 +481,49 @@ namespace bgfx
scd.Scaling = _scd.scaling;
scd.SwapEffect = _scd.swapEffect;
scd.AlphaMode = _scd.alphaMode;
scd.Flags = scdFlags;
scd.Flags = _scd.flags;
#if BX_PLATFORM_LINUX || BX_PLATFORM_WINDOWS
IDXGIFactory5* factory5;
hr = m_factory->QueryInterface(IID_IDXGIFactory5, (void**)&factory5);
if (SUCCEEDED(hr) )
{
BOOL allowTearing = false;
// BK - CheckFeatureSupport with DXGI_FEATURE_PRESENT_ALLOW_TEARING
// will crash on pre Windows 8. Issue #1356.
hr = factory5->CheckFeatureSupport(DXGI_FEATURE_PRESENT_ALLOW_TEARING, &allowTearing, sizeof(allowTearing) );
BX_TRACE("Allow tearing is %ssupported.", allowTearing ? "" : "not ");
scd.Flags |= allowTearing ? DXGI_SWAP_CHAIN_FLAG_ALLOW_TEARING : 0;
scd.Flags |= false
|| _scd.swapEffect == DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL
|| _scd.swapEffect == DXGI_SWAP_EFFECT_FLIP_DISCARD
? 0 // DXGI_SWAP_CHAIN_FLAG_FRAME_LATENCY_WAITABLE_OBJECT
: 0
;
m_tearingSupported = allowTearing;
DX_RELEASE_I(factory5);
}
DXGI_SWAP_CHAIN_FULLSCREEN_DESC scfd;
scfd.RefreshRate.Numerator = 1;
scfd.RefreshRate.Denominator = 60;
scfd.ScanlineOrdering = DXGI_MODE_SCANLINE_ORDER_UNSPECIFIED;
scfd.Scaling = DXGI_MODE_SCALING_UNSPECIFIED;
scfd.Windowed = _scd.windowed;
hr = m_factory->CreateSwapChainForHwnd(
_device
, (HWND)_scd.nwh
, &scd
, &scfd
, NULL
, reinterpret_cast<IDXGISwapChain1**>(_swapChain)
);
#else
if (NULL == _scd.ndt)
{
hr = m_factory->CreateSwapChainForCoreWindow(