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One OffScreen Surface to Two Device

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Hi, I have a app with 2 windows, each windows direc3d device. When i create a offscreen surface from any direct3D I can´t use UpdateSurface or StretchRect with backbuffer (GetBackBuffer) to show en each window the imagen load in the offscreen surface. Any idea? Thank you.

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You should use just one device for the two windows. This should solve your problem. You can use 'CreateAdditionalSwapChain' to create a swap chain for each window after the first (the first swap chain is created when the device is created).

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