API interoperability

[Edward Boszczowski]

I would like if it is possible to use a texture or buffer created by a graphic API like Vulkan or DX12 and communicate it with a buffer/texture created using Dawn with same graphic API for Dawn backend. 
In my use case I have the source code of a program that was made using DX12 and I would like to communicate the buffer used for the fragment shader in that program with a compute shader that is created with Dawn. My intention is that every time I perform a dispatch, the fragment shader can view the update value, but without to use a CPU as bridge between the Dx12 program and my Dawn program.

Thanks beforehand
Edward    

[Austin Eng]

Hi Edward,

In Dx12, you can create a share handle from a resource. Once you have the share handle, you can import it into Dawn as a wgpu::SharedTextureMemory. You can see some partial docs on this feature here, and you can refer to our tests as a code reference.

Cheers,

Austin

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