NVIDIA looking to hook up Reflex support in Proton

An NVIDIA engineer has sent in pull requests to DXVK, VKD3D-Proton and DXVK-NVAPI to enable support for Reflex / NV low latency to get it hooked up in Proton.

For DXVK-NVAPI the pull request notes:

The intent of this PR is to enable Reflex for all D3D11, and D3D12 titles using dxvk-nvapi. It does this through a new device interface called ID3DLowLatencyDevice, which will be exposed from vkd3d-proton, and dxvk.

To provide compatibility with LatencyFleX this change will only use the ID3DLowLatencyDevice interface when LatencyFleX is not detected.

For VKD3D-Proton the pull request notes:

This pull request implements a new device interface called ID3DLowLatencyDevice, and ID3D12CommandQueueExt using the VK_NV_low_latency2 extension. The purpose of these interfaces, is to give dxvk-nvapi a way to implement the nvapi Reflex interface.

And then again the pull request for DXVK notes:

This pull request implements a new device interface called ID3DLowLatencyDevice using the VK_NV_low_latency2 extension. The purpose of this interface, is to give dxvk-nvapi a way to implement the nvapi Reflex interface.

Nice to see NVIDIA jumping in directly to get this support worked on, and also good that they're not trying to overwrite support for the already existing LatencyFleX, which is an open source alternative to NVIDIA Reflex.