Jason Johnston

Hi all,

I am having trouble getting vats to work with substrate. Substrate doesn't support the custom uv channels required by the vats functions. Any help is appreciated to get these working.

thanks

I have a fluid vat with unpacked normals (separate normal map) emitting from a Niagara particle system. It all works fine, but once the particle rotates, the normals on the vat do not update. Any ideas on how to fix this? I tried transforming the normal from particle mesh space to world space, but that didn't help either.

thanks

I posted this in another thread but hoped it would get traction in it's own thread. This is using the Engine plugin from this link: https://github.com/sideeffects/HoudiniEngineForUnreal-v2/releases/tag/v2.0.3 [github.com]

Most hdas work as expected with the new build that was posted to github, but once an hda has a ramp parameter on it, it crashes Unreal. It doesn't matter the type of ramp, spline or color, they both crash Unreal. This was working in earlier versions of the plugin. So a lot of the hdas we've created aren't currently working unfortunately. Hopefully it is an easy fix?

I've attached a simple hda to test with and without the ramp. I can get it to crash consistently using this hda or by removing the ramp from the interface it works fine with no crashes. Also below is the crash log from Unreal.

thanks for the help

-----------------------------
Crash log:

Assertion failed: (Index >= 0) & (Index < ArrayNum) Array index out of bounds: -1 from an array of size 7

UE4Editor_Core!AssertFailedImplV()
UE4Editor_Core!FDebug::CheckVerifyFailedImpl()
UE4Editor_HoudiniEngineEditor!DispatchCheckVerify<void,<lambda_d081a37e3b4b82b66229d44c87df2878> >()
UE4Editor_HoudiniEngineEditor!FHoudiniParameterDetails::CreateWidgetRampPoints()
UE4Editor_HoudiniEngineEditor!FHoudiniParameterDetails::CreateWidgetFloatRamp()
UE4Editor_HoudiniEngineEditor!FHoudiniParameterDetails::CreateWidget()
UE4Editor_HoudiniEngineEditor!FHoudiniAssetComponentDetails::CustomizeDetails()
UE4Editor_PropertyEditor!DetailLayoutHelpers::QueryCustomDetailLayout()
UE4Editor_PropertyEditor!SDetailsViewBase::UpdateSinglePropertyMap()
UE4Editor_PropertyEditor!SDetailsViewBase::UpdatePropertyMaps()
UE4Editor_PropertyEditor!SDetailsView::PostSetObject()
UE4Editor_PropertyEditor!SDetailsView::SetObjectArrayPrivate()
UE4Editor_PropertyEditor!SDetailsView::SetObjects()
UE4Editor_PropertyEditor!FPropertyEditorModule::UpdatePropertyViews()
UE4Editor_HoudiniEngine!FHoudiniEngineUtils::UpdateEditorProperties_Internal()
UE4Editor_HoudiniEngine!FHoudiniEngineUtils::UpdateEditorProperties()
UE4Editor_HoudiniEngine!FHoudiniParameterTranslator::UpdateLoadedParameters()
UE4Editor_HoudiniEngine!FHoudiniEngineManager::ProcessComponent()
UE4Editor_HoudiniEngine!FHoudiniEngineManager::Tick()
UE4Editor_Core!FTicker::Tick()
UE4Editor!FEngineLoop::Tick()
UE4Editor!GuardedMain()
UE4Editor!GuardedMainWrapper()
UE4Editor!WinMain()
UE4Editor!__scrt_common_main_seh()
kernel32
ntdll