custom plugin shaders problem

[anonymous_user_cbf923ff1 (anonymous_user_cbf923ff)]

I met a weird problem and cannot figure out the solution.

I have a plugin module that using my own VS and PS shaders to set a red color on a proceduralmeshcomponent plane.
If I click run button on UE editor. ProceduralMeshComponent would be black until I add some meaningless changes(a new line “//”) in usf file and recompile it by pressing shift+ctrl+…After this recompile,PMC would become red as expected.

[anonymous_user_cbf923ff1 (anonymous_user_cbf923ff)]

well, problem found, it caused by main thread going through shader defualt constructor in engine generation, not the one binding shader’s parameters. However, no idea why it does that.