Feature request : add DispatchMeshIndirect & DispatchRaysIndirect support

[THISISAGOODNAME]

Or more universal api like dx12 ExecuteIndirect .

:)

[andrejnau]

I thought about ExecuteIndirect, but unfortunately Vulkan does not have such api. VK_NV_device_generated_commands can be the equivalent of ExecuteIndirect, but it is not a final version yet, for example there is no DispatchRaysIndirect. I prefer to wait for KHR version.

[andrejnau]

Another limitation is that Vulkan do not provide count version for all indirect calls. It does not allow emulating subset of ExecuteIndirect.

[andrejnau]

Anyway, thank you for your feature request. I will add DispatchMeshIndirect/DispatchRaysIndirect support.

[andrejnau]

DirectX 12 and Vulkan have different memory layout for arguments. D3D12_DISPATCH_MESH_ARGUMENTS vs VkDrawMeshTasksIndirectCommandNV and D3D12_DISPATCH_RAYS_DESC vs VkTraceRaysIndirectCommandKHR. It will require arguments patch on the gpu side.
Sorry, I want to postpone this feature request until there is a way to do it without arguments buffer patching.

[andrejnau]

I created KhronosGroup/Vulkan-Docs#1486 I hope it affects something.

[THISISAGOODNAME]

DirectX 12 and Vulkan have different memory layout for arguments. D3D12_DISPATCH_MESH_ARGUMENTS vs VkDrawMeshTasksIndirectCommandNV and D3D12_DISPATCH_RAYS_DESC vs VkTraceRaysIndirectCommandKHR. It will require arguments patch on the gpu side.
Sorry, I want to postpone this feature request until there is a way to do it without arguments buffer patching.

Thank you anyway.