UE 中 rhi命令的提交是在render 线程,而graphics api 真正的执行是在rhi 线程, 今天想看下rhi的底层调用,但由于是通过task执行的,无法获取到render thread传入的地方,调试起来不太方便。
可通过开启下面的命令来调试
1. 让RDG进入立即执行模式:
; Uncomment to get render graph executing passes as they get created to easily debug crashes caused by pass wiring logic.
r.RDG.ImmediateMode=1
2. 关闭RHI多线程
; Uncomment to disable parallel rendering
r.RHICmdBypass=1
或者命令输入
r.RHIThread.Enable 0