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D3DBase: Use the swapchain discard mode when possible.

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This commit is contained in:
Jules Blok 2017-07-10 14:03:38 +02:00
parent 65495a1297
commit 3fc9a48da0
1 changed files with 11 additions and 2 deletions
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13
Source/Core/VideoBackends/D3D/D3DBase.cpp
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@ -298,7 +298,7 @@ HRESULT Create(HWND wnd)
swap_chain_desc.SampleDesc.Quality = 0; swap_chain_desc.SampleDesc.Quality = 0;
swap_chain_desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM; swap_chain_desc.Format = DXGI_FORMAT_R8G8B8A8_UNORM;
swap_chain_desc.Scaling = DXGI_SCALING_STRETCH; swap_chain_desc.Scaling = DXGI_SCALING_STRETCH;
swap_chain_desc.SwapEffect = DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL; swap_chain_desc.SwapEffect = DXGI_SWAP_EFFECT_FLIP_DISCARD;
swap_chain_desc.Width = xres; swap_chain_desc.Width = xres;
swap_chain_desc.Height = yres; swap_chain_desc.Height = yres;
@ -349,11 +349,20 @@ HRESULT Create(HWND wnd)
{ {
hr = factory->CreateSwapChainForHwnd(device, hWnd, &swap_chain_desc, nullptr, nullptr, hr = factory->CreateSwapChainForHwnd(device, hWnd, &swap_chain_desc, nullptr, nullptr,
&swapchain); &swapchain);
if (FAILED(hr))
{
// Flip-model discard swapchains aren't supported on Windows 8, so here we fall back to
// a sequential swapchain
swap_chain_desc.SwapEffect = DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL;
hr = factory->CreateSwapChainForHwnd(device, hWnd, &swap_chain_desc, nullptr, nullptr,
&swapchain);
}
if (FAILED(hr)) if (FAILED(hr))
{ {
// Flip-model swapchains aren't supported on Windows 7, so here we fall back to a legacy // Flip-model swapchains aren't supported on Windows 7, so here we fall back to a legacy
// BitBlt-model swapchain // BitBlt-model swapchain
swap_chain_desc.SwapEffect = DXGI_SWAP_EFFECT_SEQUENTIAL; swap_chain_desc.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
hr = factory->CreateSwapChainForHwnd(device, hWnd, &swap_chain_desc, nullptr, nullptr, hr = factory->CreateSwapChainForHwnd(device, hWnd, &swap_chain_desc, nullptr, nullptr,
&swapchain); &swapchain);
} }