Windows API - Win32
A core set of Windows application programming interfaces (APIs) for desktop and server applications. Previously known as Win32 API.
2,651 questions
SetLayeredWindowAttributes() is no work
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志鸿 吴
0
Reputation points
this winapi <SetLayeredWindowAttributes()> in d3d12 is no work , but it in d3d9-11 is work , i want to use in d3d12 , why dose this problem arise ? what should i do ?
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Darran Rowe 1,031 Reputation points2024-10-15T18:37:01.5433333+00:00 In regards to Direct3D 11 and this working, is the application using the bitblt model for the swapchain or is it using the flip model for the swapchain?
If the swapchain was created with DXGI_SWAP_EFFECT_SEQUENTIAL or DXGI_SWAP_EFFECT_DISCARD, does the use of SetLayeredWindowAttributes still work if the swapchain is created with DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL or DXGI_SWAP_EFFECT_FLIP_DISCARD? Direct3D 12 forces the use of the flip model for the swapchain after all.
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Roy Li - MSFT 33,371 Reputation points Microsoft Vendor2024-10-23T05:48:40.62+00:00 Any updates about this issue?
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Roy Li - MSFT 33,371 Reputation points Microsoft Vendor
2024-10-23T06:29:28.1066667+00:00 Any updates about this? Have you checked @Darran Rowe 's comment?
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志鸿 吴 0 Reputation points
2024-10-23T07:12:43.53+00:00 No , if i using DXGI_SWAP_EFFECT_SEQUENTIAL or DXGI_SWAP_EFFECT_DISCARD , SetLayeredWindowAttributes is work , but that is Direct3D 11 ,because Direct3D 12 forces using DXGI_SWAP_EFFECT_FLIP_SEQUENTIAL or DXGI_SWAP_EFFECT_FLIP_DISCARD , so SetLayeredWindowAttributes in Direct3D 12 is no work , how should do ? i want to transparent background to show my render , like use SetLayeredWindowAttributes .
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Jeanine Zhang-MSFT 9,771 Reputation points Microsoft Vendor2024-10-24T08:52:58.59+00:00 Whether have you tried to use flip model in Direct3D11 and the results are consistent with Direct3D12?
Could you please provide a minimal sample code to help us reproduce the issue?
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志鸿 吴 0 Reputation points
2024-10-24T09:00:07.6033333+00:00 Yes,i tried to use flip model in Direct3D 11 ,it is same , if i use flip model , then i cant use SetLayeredWindowAttributes API .
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Jeanine Zhang-MSFT 9,771 Reputation points Microsoft Vendor
2024-10-28T09:37:28.0833333+00:00 It seems that SetLayeredWindowAttributes API is not support flip model. I suggest you could try to use DWM to transparent background.
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Darran Rowe 1,031 Reputation points
2024-10-28T15:38:24.9833333+00:00 I think the only real option here is to use the Windows composition engine, either through DirectComposition or the Visual Layer. This allows you to create a flip model swap chain with alpha.
This type of swap chain can be created through IDXGIFactory2::CreateSwapChainForComposition.
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