DXVK-IGDEXT brings better Intel GPU support to Proton

A new open-source project, DXVK-IGDEXT, lets Proton and Wine use Intel D3D11 Graphics Extensions (UAV overlap, MultiDrawIndirect, depth bounds) by forwarding them to DXVK's native implementation instead of falling back to slower default behavior. It is MIT-licensed and already included in bleeding-edge Proton Experimental beta builds, for Linux/Wine only.

• DXVK-IGDEXT forwards Intel D3D11 extensions to DXVK's native implementation
• Supports UAV overlap, MultiDrawIndirect and depth bounds
• MIT-licensed project already in Proton Experimental beta builds
• Linux/Wine only, not for native Windows