davidalgis / interopunitycuda Goto Github PK

We need to do a unity package from the C# code, to avoid making copy of each file to other project

When I try to register in CUDA a texture DX11 that has been created in Unity, I get the following error : ErrorCuda error: 1 invalid argument.

I wanted to generate the mip map of a Texture2D directly from the graphics API. But with DX11 a Texture2D is created with miscflag 0, and the function to generate mip maps with DX11 needs to have the flag D3D11_RESOURCE_MISC_GENERATE_MIPS. (cf.
https://learn.microsoft.com/en-us/windows/win32/api/d3d11/nf-d3d11-id3d11devicecontext-generatemips)

When render doc is loaded in Unity the function IsSupported() return false and make everything failed.

When you create a Texture2DArray in Unity, there are two different behavior depending on graphics API :

• OpenGL : it can be registered as a 3D texture (target is set to GL_TEXTURE_3D) and therefore we can use only one surface object in which we write with surf3DWrite see eg. 39039e5
• DX11 : it can only be registered as a 2D texture (with arraySize greater than 1) and therefore we have to use multiple surfaces objects in which we write with surf2DWrite see 84220a4.

The philosophy of this plugin is to make user agnostic of the graphics API. That's why we need to find a way to make the user wrote into the texture array with only one method that will work with each API.

DirectX12 is not supported yet. The interoperability with CUDA doesn't work in the same way see https://forums.developer.nvidia.com/t/cuda-interop-with-d3d12-possible/54671/7

https://unity3d.atlassian.net/servicedesk/customer/portal/2/user/login?destination=portal%2F2%2FIN-25859

I need to add a git hook to make sure unit test have passed. Like in pre-push.

There are unit test for texture and compute buffer, but I need to implement it for texture array.

CUDA is fast, but it's only supported by Nvidia's GPU. It would be better to use HIP to support more GPU.

For now, when there are errors, most of the time the application just crash.

We need to add a unit test that test if the plugin works for all supported graphics API

Unity does crash when we are not mapping and unmapping at update a buffer.