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(gfx/d3d11) Don't use allow tearing flag with blit swap chains (#12529)

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Connor McLaughlin 2021-06-16 23:19:27 +10:00 committed by GitHub
parent cdba9accdf
commit 946d87cf89
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 42 additions and 18 deletions
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1
gfx/common/d3d11_common.h
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@ -2547,6 +2547,7 @@ typedef struct
bool resize_render_targets;
bool init_history;
bool has_flip_model;
bool has_allow_tearing;
d3d11_shader_t shaders[GFX_MAX_SHADERS];
#ifdef __WINRT__
DXGIFactory2 factory;

59
gfx/drivers/d3d11.c
View File

@ -624,6 +624,9 @@ static bool d3d11_init_swapchain(d3d11_video_t* d3d11,
IDXGIFactory2* dxgiFactory = NULL;
#else
IDXGIFactory* dxgiFactory = NULL;
#endif
#if !defined(WINAPI_FAMILY) || (WINAPI_FAMILY != WINAPI_FAMILY_PHONE_APP)
IDXGIFactory5* dxgiFactory5 = NULL;
#endif
IDXGIDevice* dxgiDevice = NULL;
IDXGIAdapter* adapter = NULL;
@ -671,16 +674,6 @@ static bool d3d11_init_swapchain(d3d11_video_t* d3d11,
#ifdef HAVE_WINDOW
desc.Windowed = TRUE;
#endif
#if defined(WINAPI_FAMILY) && (WINAPI_FAMILY == WINAPI_FAMILY_PHONE_APP)
/* On phone, no swap effects are supported. */
/* TODO/FIXME - need to verify if this is needed and if
* flip model cannot be used here */
desc.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
#else
desc.SwapEffect = DXGI_SWAP_EFFECT_FLIP_DISCARD;
#endif
desc.Flags = DXGI_SWAP_CHAIN_FLAG_ALLOW_TEARING;
#ifdef DEBUG
flags |= D3D11_CREATE_DEVICE_DEBUG;
#endif
@ -715,25 +708,54 @@ static bool d3d11_init_swapchain(d3d11_video_t* d3d11,
#else
adapter->lpVtbl->GetParent(
adapter, uuidof(IDXGIFactory1), (void**)&dxgiFactory);
/* On phone, no swap effects are supported. */
/* TODO/FIXME - need to verify if this is needed and if
* flip model cannot be used here */
desc.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
#if !defined(WINAPI_FAMILY) || (WINAPI_FAMILY != WINAPI_FAMILY_PHONE_APP)
/* Check for ALLOW_TEARING support before trying to use it.
* Also don't use the flip model if it's not supported, because then we can't uncap our
* present rate. */
if (SUCCEEDED(dxgiFactory->lpVtbl->QueryInterface(
dxgiFactory, uuidof(IDXGIFactory5), (void**)&dxgiFactory5)))
{
BOOL allow_tearing_supported = FALSE;
if (SUCCEEDED(dxgiFactory5->lpVtbl->CheckFeatureSupport(
dxgiFactory5, DXGI_FEATURE_PRESENT_ALLOW_TEARING,
&allow_tearing_supported, sizeof(allow_tearing_supported))) &&
allow_tearing_supported)
{
desc.SwapEffect = DXGI_SWAP_EFFECT_FLIP_DISCARD;
desc.Flags |= DXGI_SWAP_CHAIN_FLAG_ALLOW_TEARING;
d3d11->has_flip_model = true;
d3d11->has_allow_tearing = true;
}
dxgiFactory5->lpVtbl->Release(dxgiFactory5);
}
#endif
if (FAILED(dxgiFactory->lpVtbl->CreateSwapChain(
dxgiFactory, (IUnknown*)d3d11->device,
&desc, (IDXGISwapChain**)&d3d11->swapChain)))
{
if (!d3d11->has_flip_model)
return false;
RARCH_WARN("[D3D11]: Failed to create swapchain with flip model, try non-flip model.\n");
/* Failed to create swapchain, try non-flip model */
d3d11->has_flip_model = false;
desc.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
desc.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
desc.Flags &= ~DXGI_SWAP_CHAIN_FLAG_ALLOW_TEARING;
d3d11->has_flip_model = false;
d3d11->has_allow_tearing = false;
if (FAILED(dxgiFactory->lpVtbl->CreateSwapChain(
dxgiFactory, (IUnknown*)d3d11->device,
&desc, (IDXGISwapChain**)&d3d11->swapChain)))
return false;
}
if ( desc.SwapEffect == DXGI_SWAP_EFFECT_FLIP_DISCARD
|| desc.SwapEffect == DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL)
d3d11->has_flip_model = true;
#endif
dxgiFactory->lpVtbl->Release(dxgiFactory);
@ -1327,7 +1349,7 @@ static bool d3d11_gfx_frame(
d3d11_video_t* d3d11 = (d3d11_video_t*)data;
D3D11DeviceContext context = d3d11->context;
bool vsync = d3d11->vsync;
unsigned present_flags = (vsync) ? 0 : DXGI_PRESENT_ALLOW_TEARING;
unsigned present_flags = (vsync || !d3d11->has_allow_tearing) ? 0 : DXGI_PRESENT_ALLOW_TEARING;
const char *stat_text = video_info->stat_text;
unsigned video_width = video_info->width;
unsigned video_height = video_info->height;
@ -1340,7 +1362,8 @@ static bool d3d11_gfx_frame(
if (d3d11->resize_chain)
{
DXGIResizeBuffers(d3d11->swapChain, 0, 0, 0, DXGI_FORMAT_UNKNOWN, DXGI_SWAP_CHAIN_FLAG_ALLOW_TEARING);
DXGIResizeBuffers(d3d11->swapChain, 0, 0, 0, DXGI_FORMAT_UNKNOWN,
d3d11->has_allow_tearing ? DXGI_SWAP_CHAIN_FLAG_ALLOW_TEARING : 0);
d3d11->viewport.Width = video_width;
d3d11->viewport.Height = video_height;