https://bugs.winehq.org/show_bug.cgi?id=45038
--- Comment #3 from Toni eldrad@autistici.org --- Actually, just checked and there is a debug channel for d3dcompiler, so best is posting a log running with the environment variable set as follows:
WINEDEBUG=+d3d_shader,+d3dcompiler
(also, please make sure to make the log without the native d3dcompiler_43)