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DXGI: Fixed allow tear.

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This commit is contained in:
Бранимир Караџић 2020-07-27 14:57:34 -07:00
parent f89520db89
commit 725438583e
1 changed files with 28 additions and 5 deletions
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33
src/dxgi.cpp
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@ -370,12 +370,17 @@ namespace bgfx
bool allowTearing = false;
#if BX_PLATFORM_WINDOWS
if (windowsVersionIs(Condition::GreaterEqual, 0x0604) )
IDXGIFactory5* factory5;
hr = m_factory->QueryInterface(IID_IDXGIFactory5, (void**)&factory5);
if (SUCCEEDED(hr) )
{
// BK - CheckFeatureSupport with DXGI_FEATURE_PRESENT_ALLOW_TEARING
// will crash on pre Windows 8. Issue #1356.
hr = m_factory->CheckFeatureSupport(DXGI_FEATURE_PRESENT_ALLOW_TEARING, &allowTearing, sizeof(allowTearing) );
hr = factory5->CheckFeatureSupport(DXGI_FEATURE_PRESENT_ALLOW_TEARING, &allowTearing, sizeof(allowTearing) );
BX_TRACE("Allow tearing is %ssupported.", allowTearing ? "" : "not ");
DX_RELEASE_I(factory5);
}
DXGI_SWAP_CHAIN_DESC scd;
@ -395,7 +400,7 @@ namespace bgfx
scd.SwapEffect = _scd.swapEffect;
scd.Flags = 0
| _scd.flags
| (allowTearing ? DXGI_SWAP_CHAIN_FLAG_ALLOW_TEARING : 0)
| (allowTearing ? DXGI_SWAP_CHAIN_FLAG_ALLOW_TEARING | DXGI_SWAP_CHAIN_FLAG_FRAME_LATENCY_WAITABLE_OBJECT : 0)
;
hr = m_factory->CreateSwapChain(
@ -639,7 +644,25 @@ namespace bgfx
{
HRESULT hr;
uint32_t scdFlags = _scd.flags;
#if 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 | DXGI_SWAP_CHAIN_FLAG_FRAME_LATENCY_WAITABLE_OBJECT : 0;
DX_RELEASE_I(factory5);
}
if (NULL != _nodeMask
&& NULL != _presentQueue)
{
@ -648,7 +671,7 @@ namespace bgfx
, _scd.width
, _scd.height
, _scd.format
, _scd.flags
, scdFlags
, _nodeMask
, _presentQueue
);
@ -663,7 +686,7 @@ namespace bgfx
, _scd.width
, _scd.height
, _scd.format
, _scd.flags
, scdFlags
);
}