Description

I do not know what happen here and I need the help of the rendering team to debug this issue. There is no log at all even with -d3debug

If you import the file SK_LOD_Morph_Working.fbx its a similar setup in Maya but its working fine in both CPU and GPU vertex factory.

Steps to Reproduce

Import the attach file SK_LOD_Morph_Broken.fbx with the following options to true

  • "Import Morph Targets" option to true
  • "Import Mesh LODs" option to true
  • "Create materials" selected

open the skeletalmesh

change the morph slider name fat to 1.0

switch LOD from 0 to 1 and to 2

show the normal (this will switch to CPU skin vertex factory)

switch LOD from 0 to 1 and to 2

RESULT: in GPU vertex factory only the LOD 0 morph are working, In CPU vertex factory all LOD moprh are working

EXPECTED: The morph is working on all LOD in GPU or CPU vertex factory

Have Comments or More Details?

There's no existing public thread on this issue, so head over toAnswerHub just mention UE-85965 in the post.

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Fixed
ComponentRendering - RHI
Affects Versions4.224.234.244.25
Target Fix4.25
Fix Commit11172426
Main Commit11205265
CreatedDec 17, 2019
ResolvedJan 30, 2020
UpdatedFeb 13, 2020