[Bug 56465] d3dcompiler fails to compile shader functions that have optional arguments ("E5000: syntax error, unexpected '=', expecting ')'")

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=56465

--- Comment #3 from Nikolay Sivov  ---
This works with vkd3d 1.13, most likely after
49caeee1fd59c6e15ef7eb99f31c3bbbed4dd5e5.

Alex, could you please retry if you have more test cases besides what's in this
bug description?