Mesh Shader Support about panda3d HOT 2 OPEN

Panda3D does not currently support Vulkan, Metal, nor D3D12, and all I can find for OpenGL is the Nvidia extension that looks like neither Intel nor AMD have implemented.

So, while I agree that mesh shader support will be nice in the future, it probably will not be added any time soon (at the very least we need to get the shader pipeline and Vulkan work wrapped up first). However, PRs are always welcome.

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I agree this is certainly a feature for the post shader pipeline/vulkan future 😄.

As for bringing up the other graphics apis I am aware Panda3D doesn't support them. That's my bad for not being clear about why I brought them up which is that mesh shaders seem to be where the industry is heading long term and it'd be nice for Panda3D to support mesh shaders at some point.

As for PRs I'll see if I can get something working in Python with draw callback nodes first as a proof of concept. I'm not very good at C++ and I don't want to mess anything up😅.

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