Assertion failure with UE4Editor and sb enabled
Submitted by Gert Wollny
Assigned to Default DRI bug account
Created attachment 133745 TGSI and byte code of the offending shader
When running UE4Editor (4.17) on BARTS with -opengl3 and mesa (1e696b96) is compiled in debug mode I get the following assertion failure on one shader (attached), that then leads to UE4Editor shutting down:
error at : MUL_IEEE R17.x.5F@R124.x, R14.x.5F@R124.x, R90.x.22||F@R2.w : expected operand value R90.x.22||F@R2.w, gpr contains t39||FP@R2.w sb/sb_ra_checker.cpp:46:run: Assertion `sh.errors.empty()' failed.
Sometimes it happens right away, when loading the assets, sometimes I have to load a specific level. I guess it depends on what assets are actually displayed.
If I disable the assertion then I can use UE4Editor (I still need to add a patch to work around to a problem introduced by another shader that for some bug in UE4 exceeds the limits of the GPRs, but this has nothing to do which this assertion failure).
Attachment 133745, "TGSI and byte code of the offending shader":