By supporting Direct3D 12, Godot gains support for multiple new platforms, such as:
- Windows Store (UWP).
- Windows on ARM.
- GDK.
- XBox —which can’t be supported officially by Godot, but for which Direct3D 12 support is essential—.
Depending on the complexity of the scene, effects used, etc., this first version of the renderer performs generally worse than the Vulkan one. In some tests, D3D12 has not been able to deliver more than 75% of the Vulkan frames per second. In some other, D3D12 has been able to outperform Vulkan by a small margin. Performance improvements will be ironed out over time.
Expect it to come in Godot 4.3
What else do you want to happen? DX is essential for porting to xbox and some versions of Windows. It’s not about open source, devs need this. By your logic should everyone just make a Linux build and nothing else because they’re proprietary and evil?
One dev succeeding without those won’t prove all other devs can but I hope if I do succeed that will convince some devs maybe they don’t “need” proprietary solutions.
I am uncertain if building just for Linux would be better or worse became there is some merit to uninformed users having free software on their proprietary devices.