As shown in the screenshot, after upgrading a project from 4.18 to 4.19p4 the foliage (transparent materials?) are displayed/lit black in the editor, but are fine PIE. This happens in lit or unlit modes. Foliage has been completely OK in previous versions of the engine (4.18 and earlier).
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Just to say this is still happening in 4.19 preview 5.
I’ve replied to email epic sent asking for repo steps, which can recreate the problem form a 4.18 upgraded to 4.19 project, but I’ve had no reply to indicate this issue is being investigated.
Do I need to re-submit the issue as a bug?
To reproduce –
Create a FirstPerson based Template project in 4.18
Then import the Broadload_Desktop.srt speedtree model from the Free SpeedTree Samples for UT4 pack (from Speedtree.com)
Add speedtree model to foliage system, and paint several models onto floor in FirstPersonExampleMap.
Build lighting, all is still good.
Close the project, and open the 4.19p4 editor.
Open a copy of the 4.18 project, fixing any compiler errors along the way.
Transparent leaves from Speedtree models are now black in the editor, but OK PIE.
Rebuilding lighting in 4.19 after loading doesn’t fix the black on trees in editor.
Level was in Volumetric Lightmap mode, still happens if lighting rebuilt in sparse mode.
There will be a speed tree color node in the materials. Workaround it to bypass that node until its fixed. Looks like they tweaked some of the nodes for the new speedtree 8 modeler and broke backward compatibility. Looks like the wind is a little different too. I think I like the new wind better.
Ah yes, it does appear the SpeedTreeColorVariation node is returning black when editing, but is OK when PIE, on an upgraded project.
Odd that this node should behave differently in these use cases though, not sure what the logic of that could be.
I’m having issues with foliage using perinstance and world offset to set it up so flat planes always face the camera. In editor theybdisapear and are all black in game. Sometimes they disappear and there will be flickering fb which I assume is the offset no longer working.