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Enable transparent windows when using the D3D11 renderer

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Note that this will not work with D3D12, as DXGI_SWAP_EFFECT_DISCARD is not available there.
This commit is contained in:
Sam Lantinga 2023-11-13 21:11:51 -08:00
parent 1c64366b80
commit 924de4df48
1 changed files with 6 additions and 1 deletions
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7
src/render/direct3d11/SDL_render_d3d11.c
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@ -786,7 +786,12 @@ static HRESULT D3D11_CreateSwapChain(SDL_Renderer *renderer, int w, int h)
swapChainDesc.Scaling = DXGI_SCALING_STRETCH;
}
}
swapChainDesc.SwapEffect = DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL; /* All Windows Store apps must use this SwapEffect. */
if (SDL_GetWindowFlags(renderer->window) & SDL_WINDOW_TRANSPARENT) {
swapChainDesc.Scaling = DXGI_SCALING_STRETCH;
swapChainDesc.SwapEffect = DXGI_SWAP_EFFECT_DISCARD;
} else {
swapChainDesc.SwapEffect = DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL; /* All Windows Store apps must use this SwapEffect. */
}
#endif
swapChainDesc.Flags = 0;