Description

This is a regression testing in //UE4/Release-5.0 CL#18319896

Assertion thrown when selecting the Input Preview arrow within a collapsed node within the Material Graph.

Steps to Reproduce
  1. Create or open any project
  2. Crate a new Material
  3. In the Material Graph create any node
  4. Right click then select Collapse Nodes
  5. Open the collapse node
  6. Click the Input Preview arrow on the Input node

Expected Results:
The node expands.

Actual Results:
The Editor Crashes with an Assertion:

Assertion failed: false [File:D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\Materials\MaterialExpressions.cpp] [Line: 11113]
Callstack
=== Critical error: ===
 
Assertion failed: false [File:D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\Materials\MaterialExpressions.cpp] [Line: 11113] 
 
 
 
[Callstack] 0x00007fff91e40137 UnrealEditor-Engine.dll!UMaterialExpressionPinBase::GetOutputType() [D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\Materials\MaterialExpressions.cpp:11113]
[Callstack] 0x00007fff8ee7e8e1 UnrealEditor-MaterialEditor.dll!FMatExpressionPreview::CompilePropertyAndSetMaterialProperty() [D:\build\++UE5\Sync\Engine\Source\Editor\MaterialEditor\Private\MaterialEditor.cpp:226]
[Callstack] 0x00007fff91dbe986 UnrealEditor-Engine.dll!FHLSLMaterialTranslator::Translate() [D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\Materials\HLSLMaterialTranslator.cpp:776]
[Callstack] 0x00007fff91f1691f UnrealEditor-Engine.dll!FMaterial::Translate_Legacy() [D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\Materials\MaterialShared.cpp:2353]
[Callstack] 0x00007fff91eb62b2 UnrealEditor-Engine.dll!FMaterial::BeginCompileShaderMap() [D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\Materials\MaterialShared.cpp:2428]
[Callstack] 0x00007fff91eb8333 UnrealEditor-Engine.dll!FMaterial::CacheShaders() [D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\Materials\MaterialShared.cpp:2309]
[Callstack] 0x00007fff91eb87c2 UnrealEditor-Engine.dll!FMaterial::CacheShaders() [D:\build\++UE5\Sync\Engine\Source\Runtime\Engine\Private\Materials\MaterialShared.cpp:2151]
[Callstack] 0x00007fff8eec3a21 UnrealEditor-MaterialEditor.dll!FMaterialEditor::GetExpressionPreview() [D:\build\++UE5\Sync\Engine\Source\Editor\MaterialEditor\Private\MaterialEditor.cpp:6310]
[Callstack] 0x00007fff8eec3a5e UnrealEditor-MaterialEditor.dll!FMaterialEditor::GetExpressionPreview() []
[Callstack] 0x00007fff8eff9788 UnrealEditor-MaterialEditor.dll!FMaterialEditorUtilities::GetExpressionPreview() [D:\build\++UE5\Sync\Engine\Source\Editor\MaterialEditor\Private\MaterialEditorUtilities.cpp:218]
[Callstack] 0x00007fff8ea9df67 UnrealEditor-GraphEditor.dll!FPreviewElement::BeginRenderingCanvas() [D:\build\++UE5\Sync\Engine\Source\Editor\GraphEditor\Private\MaterialNodes\SGraphNodeMaterialBase.cpp:186]
[Callstack] 0x00007fff8eb5c1fb UnrealEditor-GraphEditor.dll!FPreviewViewport::OnDrawViewport() [D:\build\++UE5\Sync\Engine\Source\Editor\GraphEditor\Private\MaterialNodes\SGraphNodeMaterialBase.cpp:128]
[Callstack] 0x00007fffc4f55c01 UnrealEditor-Slate.dll!SViewport::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\SViewport.cpp:158]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d14565 UnrealEditor-SlateCore.dll!SOverlay::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SOverlay.cpp:200]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d139cd UnrealEditor-SlateCore.dll!SCompoundWidget::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SCompoundWidget.cpp:46]
[Callstack] 0x00007fffc4ed5fe0 UnrealEditor-Slate.dll!SBorder::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Layout\SBorder.cpp:129]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc4ed617f UnrealEditor-Slate.dll!SBox::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Layout\SBox.cpp:293]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d18569 UnrealEditor-SlateCore.dll!SPanel::PaintArrangedChildren() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:31]
[Callstack] 0x00007fffc0d1470b UnrealEditor-SlateCore.dll!SPanel::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:12]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d18569 UnrealEditor-SlateCore.dll!SPanel::PaintArrangedChildren() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:31]
[Callstack] 0x00007fffc0d1470b UnrealEditor-SlateCore.dll!SPanel::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:12]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d139cd UnrealEditor-SlateCore.dll!SCompoundWidget::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SCompoundWidget.cpp:46]
[Callstack] 0x00007fffc4ed5fe0 UnrealEditor-Slate.dll!SBorder::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Layout\SBorder.cpp:129]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d18569 UnrealEditor-SlateCore.dll!SPanel::PaintArrangedChildren() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:31]
[Callstack] 0x00007fffc0d1470b UnrealEditor-SlateCore.dll!SPanel::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:12]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d14565 UnrealEditor-SlateCore.dll!SOverlay::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SOverlay.cpp:200]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d18569 UnrealEditor-SlateCore.dll!SPanel::PaintArrangedChildren() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:31]
[Callstack] 0x00007fffc0d1470b UnrealEditor-SlateCore.dll!SPanel::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:12]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fff8eb708fd UnrealEditor-GraphEditor.dll!SNodePanel::SNode::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Editor\GraphEditor\Public\SNodePanel.h:479]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fff8ec496f3 UnrealEditor-GraphEditor.dll!SGraphPanel::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Editor\GraphEditor\Private\SGraphPanel.cpp:250]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d14565 UnrealEditor-SlateCore.dll!SOverlay::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SOverlay.cpp:200]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d139cd UnrealEditor-SlateCore.dll!SCompoundWidget::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SCompoundWidget.cpp:46]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc4ed617f UnrealEditor-Slate.dll!SBox::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Layout\SBox.cpp:293]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d139cd UnrealEditor-SlateCore.dll!SCompoundWidget::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SCompoundWidget.cpp:46]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d139cd UnrealEditor-SlateCore.dll!SCompoundWidget::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SCompoundWidget.cpp:46]
[Callstack] 0x00007fffc4ed5fe0 UnrealEditor-Slate.dll!SBorder::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Layout\SBorder.cpp:129]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d14565 UnrealEditor-SlateCore.dll!SOverlay::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SOverlay.cpp:200]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d18569 UnrealEditor-SlateCore.dll!SPanel::PaintArrangedChildren() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:31]
[Callstack] 0x00007fffc0d1470b UnrealEditor-SlateCore.dll!SPanel::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:12]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d139cd UnrealEditor-SlateCore.dll!SCompoundWidget::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SCompoundWidget.cpp:46]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d18569 UnrealEditor-SlateCore.dll!SPanel::PaintArrangedChildren() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:31]
[Callstack] 0x00007fffc4f553bc UnrealEditor-Slate.dll!SSplitter::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Layout\SSplitter.cpp:254]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d139cd UnrealEditor-SlateCore.dll!SCompoundWidget::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SCompoundWidget.cpp:46]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d18569 UnrealEditor-SlateCore.dll!SPanel::PaintArrangedChildren() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:31]
[Callstack] 0x00007fffc4f553bc UnrealEditor-Slate.dll!SSplitter::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Layout\SSplitter.cpp:254]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d18569 UnrealEditor-SlateCore.dll!SPanel::PaintArrangedChildren() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:31]
[Callstack] 0x00007fffc0d1470b UnrealEditor-SlateCore.dll!SPanel::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:12]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d14565 UnrealEditor-SlateCore.dll!SOverlay::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SOverlay.cpp:200]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d139cd UnrealEditor-SlateCore.dll!SCompoundWidget::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SCompoundWidget.cpp:46]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d18569 UnrealEditor-SlateCore.dll!SPanel::PaintArrangedChildren() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:31]
[Callstack] 0x00007fffc0d1470b UnrealEditor-SlateCore.dll!SPanel::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:12]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d139cd UnrealEditor-SlateCore.dll!SCompoundWidget::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SCompoundWidget.cpp:46]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d139cd UnrealEditor-SlateCore.dll!SCompoundWidget::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SCompoundWidget.cpp:46]
[Callstack] 0x00007fffc4ed5fe0 UnrealEditor-Slate.dll!SBorder::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Layout\SBorder.cpp:129]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d14565 UnrealEditor-SlateCore.dll!SOverlay::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SOverlay.cpp:200]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d18569 UnrealEditor-SlateCore.dll!SPanel::PaintArrangedChildren() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:31]
[Callstack] 0x00007fffc0d1470b UnrealEditor-SlateCore.dll!SPanel::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:12]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d139cd UnrealEditor-SlateCore.dll!SCompoundWidget::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SCompoundWidget.cpp:46]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]
[Callstack] 0x00007fffc0d18569 UnrealEditor-SlateCore.dll!SPanel::PaintArrangedChildren() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SPanel.cpp:31]
[Callstack] 0x00007fffc4f553bc UnrealEditor-Slate.dll!SSplitter::OnPaint() [D:\build\++UE5\Sync\Engine\Source\Runtime\Slate\Private\Widgets\Layout\SSplitter.cpp:254]
[Callstack] 0x00007fffc0d178e5 UnrealEditor-SlateCore.dll!SWidget::Paint() [D:\build\++UE5\Sync\Engine\Source\Runtime\SlateCore\Private\Widgets\SWidget.cpp:1543]

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Fixed
ComponentUE - Rendering - Materials
Affects Versions5.0.2
Target Fix5.1
Fix Commit21163269
Main Commit21163269
CreatedJun 6, 2022
ResolvedJul 19, 2022
UpdatedAug 10, 2022