Since 2.0.4 the DX12 backend compiles only the HDR-aware pixel shader at
runtime with D3DCompile(). Wine's builtin d3dcompiler (macOS, Apple's Game
Porting Toolkit) cannot build it, so ImGui_ImplDX12_CreateDeviceObjects()
failed and the launcher refused to open on every Mac.
Try the HDR-aware shader first, then the stock one 2.0.3 shipped (on a
failed compile or a failed pipeline). ImGui_ImplDX12_HasOutputTransfer()
tells the launcher and overlay which one is drawing, and they log it.
Windows keeps the HDR shader and HDR output as before.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
