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9f83927366
- Automatically upgraded all materials When using the UI material domain the material editor and material instance editor is streamlined and only displays parts of the UI that are relevant: - Changes to a preview material rendered with the UI shader - Removes non-UI specific settings - Renames some output pins and hides irrelevant ones - Shows stats for UI shader [CL 2596027 by Matt Kuhlenschmidt in Main branch]
467 lines
15 KiB
C++
467 lines
15 KiB
C++
// Copyright 1998-2015 Epic Games, Inc. All Rights Reserved.
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/////////////////////////////////////////////////////
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// UMaterialGraph
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#include "UnrealEd.h"
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#include "Materials/MaterialExpressionComment.h"
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#include "Materials/MaterialExpressionFunctionOutput.h"
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#include "Materials/MaterialExpressionCustomOutput.h"
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#include "GraphEditor.h"
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#include "MaterialShared.h"
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#include "MaterialEditorUtilities.h"
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#define LOCTEXT_NAMESPACE "MaterialGraph"
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UMaterialGraph::UMaterialGraph(const FObjectInitializer& ObjectInitializer)
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: Super(ObjectInitializer)
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{
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}
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void UMaterialGraph::RebuildGraph()
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{
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check(Material);
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Modify();
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RemoveAllNodes();
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if (!MaterialFunction)
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{
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// Initialize the material input list.
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MaterialInputs.Add( FMaterialInputInfo( GetBaseColorPinName(), MP_BaseColor ) );
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MaterialInputs.Add( FMaterialInputInfo( LOCTEXT("Metallic", "Metallic"), MP_Metallic ) );
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MaterialInputs.Add( FMaterialInputInfo( LOCTEXT("Specular", "Specular"), MP_Specular ) );
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MaterialInputs.Add( FMaterialInputInfo( LOCTEXT("Roughness", "Roughness"), MP_Roughness ) );
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MaterialInputs.Add( FMaterialInputInfo( GetEmissivePinName(), MP_EmissiveColor ) );
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MaterialInputs.Add( FMaterialInputInfo( LOCTEXT("Opacity", "Opacity"), MP_Opacity ) );
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MaterialInputs.Add( FMaterialInputInfo( LOCTEXT("OpacityMask", "Opacity Mask"), MP_OpacityMask ) );
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MaterialInputs.Add( FMaterialInputInfo( LOCTEXT("Normal", "Normal"), MP_Normal ) );
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MaterialInputs.Add( FMaterialInputInfo( LOCTEXT("WorldPositionOffset", "World Position Offset"), MP_WorldPositionOffset ) );
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MaterialInputs.Add( FMaterialInputInfo( LOCTEXT("WorldDisplacement", "World Displacement"), MP_WorldDisplacement ) );
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MaterialInputs.Add( FMaterialInputInfo( LOCTEXT("TessellationMultiplier", "Tessellation Multiplier"), MP_TessellationMultiplier ) );
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MaterialInputs.Add( FMaterialInputInfo( LOCTEXT("SubsurfaceColor", "Subsurface Color"), MP_SubsurfaceColor ) );
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MaterialInputs.Add( FMaterialInputInfo( LOCTEXT("ClearCoat", "Clear Coat"), MP_ClearCoat ) );
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MaterialInputs.Add( FMaterialInputInfo( LOCTEXT("ClearCoatRoughness", "Clear Coat Roughness"), MP_ClearCoatRoughness ) );
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MaterialInputs.Add( FMaterialInputInfo( LOCTEXT("AmbientOcclusion", "Ambient Occlusion"), MP_AmbientOcclusion ) );
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MaterialInputs.Add( FMaterialInputInfo( LOCTEXT("Refraction", "Refraction"), MP_Refraction) );
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for (int32 UVIndex = 0; UVIndex < ARRAY_COUNT(Material->CustomizedUVs); UVIndex++)
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{
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//@todo - localize
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MaterialInputs.Add( FMaterialInputInfo( FText::FromString(FString::Printf(TEXT("Customized UV%u"), UVIndex)), (EMaterialProperty)(MP_CustomizedUVs0 + UVIndex)) );
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}
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MaterialInputs.Add( FMaterialInputInfo( LOCTEXT("MaterialAttributes", "Material Attributes"), MP_MaterialAttributes) );
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MaterialInputs.Add( FMaterialInputInfo( LOCTEXT("PixelDepthOffset", "Pixel Depth Offset"), MP_PixelDepthOffset ) );
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// Add Root Node
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FGraphNodeCreator<UMaterialGraphNode_Root> NodeCreator(*this);
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RootNode = NodeCreator.CreateNode();
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RootNode->Material = Material;
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NodeCreator.Finalize();
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}
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for (int32 Index = 0; Index < Material->Expressions.Num(); Index++)
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{
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AddExpression(Material->Expressions[Index]);
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}
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for (int32 Index = 0; Index < Material->EditorComments.Num(); Index++)
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{
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AddComment(Material->EditorComments[Index]);
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}
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LinkGraphNodesFromMaterial();
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}
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UMaterialGraphNode* UMaterialGraph::AddExpression(UMaterialExpression* Expression)
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{
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UMaterialGraphNode* NewNode = NULL;
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if (Expression)
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{
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Modify();
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FGraphNodeCreator<UMaterialGraphNode> NodeCreator(*this);
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NewNode = NodeCreator.CreateNode(false);
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NewNode->MaterialExpression = Expression;
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NewNode->RealtimeDelegate = RealtimeDelegate;
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NewNode->MaterialDirtyDelegate = MaterialDirtyDelegate;
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Expression->GraphNode = NewNode;
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NodeCreator.Finalize();
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}
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return NewNode;
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}
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UMaterialGraphNode_Comment* UMaterialGraph::AddComment(UMaterialExpressionComment* Comment)
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{
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UMaterialGraphNode_Comment* NewComment = NULL;
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if (Comment)
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{
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Modify();
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FGraphNodeCreator<UMaterialGraphNode_Comment> NodeCreator(*this);
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NewComment = NodeCreator.CreateNode(false);
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NewComment->MaterialExpressionComment = Comment;
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NewComment->MaterialDirtyDelegate = MaterialDirtyDelegate;
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Comment->GraphNode = NewComment;
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NodeCreator.Finalize();
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}
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return NewComment;
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}
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void UMaterialGraph::LinkGraphNodesFromMaterial()
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{
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for (int32 Index = 0; Index < Nodes.Num(); ++Index)
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{
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Nodes[Index]->BreakAllNodeLinks();
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}
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if (RootNode)
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{
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// Use Material Inputs to make GraphNode Connections
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for (int32 Index = 0; Index < MaterialInputs.Num(); ++Index)
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{
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UEdGraphPin* InputPin = RootNode->GetInputPin(Index);
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auto ExpressionInput = MaterialInputs[Index].GetExpressionInput(Material);
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if (ExpressionInput.Expression)
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{
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UMaterialGraphNode* GraphNode = CastChecked<UMaterialGraphNode>(ExpressionInput.Expression->GraphNode);
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InputPin->MakeLinkTo(GraphNode->GetOutputPin(GetValidOutputIndex(&ExpressionInput)));
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}
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}
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}
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for (int32 Index = 0; Index < Material->Expressions.Num(); Index++)
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{
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UMaterialExpression* Expression = Material->Expressions[Index];
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if (Expression)
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{
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const TArray<FExpressionInput*> ExpressionInputs = Expression->GetInputs();
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for (int32 InputIndex = 0; InputIndex < ExpressionInputs.Num(); ++InputIndex)
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{
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UEdGraphPin* InputPin = CastChecked<UMaterialGraphNode>(Expression->GraphNode)->GetInputPin(InputIndex);
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if ( ExpressionInputs[InputIndex]->Expression)
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{
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UMaterialGraphNode* GraphNode = CastChecked<UMaterialGraphNode>(ExpressionInputs[InputIndex]->Expression->GraphNode);
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InputPin->MakeLinkTo(GraphNode->GetOutputPin(GetValidOutputIndex(ExpressionInputs[InputIndex])));
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}
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}
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}
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}
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NotifyGraphChanged();
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}
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void UMaterialGraph::LinkMaterialExpressionsFromGraph() const
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{
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// Use GraphNodes to make Material Expression Connections
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TArray<UEdGraphPin*> InputPins;
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TArray<UEdGraphPin*> OutputPins;
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for (int32 NodeIndex = 0; NodeIndex < Nodes.Num(); ++NodeIndex)
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{
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if (RootNode && RootNode == Nodes[NodeIndex])
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{
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// Setup Material's inputs from root node
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Material->Modify();
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InputPins = RootNode->Pins;
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Material->EditorX = RootNode->NodePosX;
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Material->EditorY = RootNode->NodePosY;
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check(InputPins.Num() == MaterialInputs.Num());
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for (int32 PinIndex = 0; PinIndex < InputPins.Num() && PinIndex < MaterialInputs.Num(); ++PinIndex)
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{
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FExpressionInput& MaterialInput = MaterialInputs[PinIndex].GetExpressionInput(Material);
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if (InputPins[PinIndex]->LinkedTo.Num() > 0)
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{
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UMaterialGraphNode* ConnectedNode = CastChecked<UMaterialGraphNode>(InputPins[PinIndex]->LinkedTo[0]->GetOwningNode());
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ConnectedNode->GetOutputPins(OutputPins);
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// Work out the index of the connected pin
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for (int32 OutPinIndex = 0; OutPinIndex < OutputPins.Num(); ++OutPinIndex)
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{
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if (OutputPins[OutPinIndex] == InputPins[PinIndex]->LinkedTo[0])
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{
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if (MaterialInput.OutputIndex != OutPinIndex || MaterialInput.Expression != ConnectedNode->MaterialExpression)
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{
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ConnectedNode->MaterialExpression->Modify();
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MaterialInput.Connect(OutPinIndex, ConnectedNode->MaterialExpression);
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}
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break;
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}
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}
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}
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else if (MaterialInput.Expression)
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{
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MaterialInput.Expression = NULL;
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}
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}
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}
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else
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{
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if (UMaterialGraphNode* GraphNode = Cast<UMaterialGraphNode>(Nodes[NodeIndex]))
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{
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// Need to be sure that we are changing the expression before calling modify -
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// triggers a rebuild of its preview when it is called
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UMaterialExpression* Expression = GraphNode->MaterialExpression;
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bool bModifiedExpression = false;
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if (Expression->MaterialExpressionEditorX != GraphNode->NodePosX
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|| Expression->MaterialExpressionEditorY != GraphNode->NodePosY
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|| Expression->Desc != GraphNode->NodeComment)
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{
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bModifiedExpression = true;
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Expression->Modify();
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// Update positions and comments
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Expression->MaterialExpressionEditorX = GraphNode->NodePosX;
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Expression->MaterialExpressionEditorY = GraphNode->NodePosY;
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Expression->Desc = GraphNode->NodeComment;
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}
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GraphNode->GetInputPins(InputPins);
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const TArray<FExpressionInput*> ExpressionInputs = Expression->GetInputs();
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checkf(InputPins.Num() == ExpressionInputs.Num(), TEXT("Mismatched inputs for '%s'"), *Expression->GetFullName());
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for (int32 PinIndex = 0; PinIndex < InputPins.Num() && PinIndex < ExpressionInputs.Num(); ++PinIndex)
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{
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FExpressionInput* ExpressionInput = ExpressionInputs[PinIndex];
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if (InputPins[PinIndex]->LinkedTo.Num() > 0)
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{
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UMaterialGraphNode* ConnectedNode = CastChecked<UMaterialGraphNode>(InputPins[PinIndex]->LinkedTo[0]->GetOwningNode());
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ConnectedNode->GetOutputPins(OutputPins);
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// Work out the index of the connected pin
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for (int32 OutPinIndex = 0; OutPinIndex < OutputPins.Num(); ++OutPinIndex)
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{
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if (OutputPins[OutPinIndex] == InputPins[PinIndex]->LinkedTo[0])
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{
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if (ExpressionInput->OutputIndex != OutPinIndex || ExpressionInput->Expression != ConnectedNode->MaterialExpression)
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{
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if (!bModifiedExpression)
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{
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bModifiedExpression = true;
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Expression->Modify();
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}
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ConnectedNode->MaterialExpression->Modify();
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ExpressionInput->Connect(OutPinIndex, ConnectedNode->MaterialExpression);
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}
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break;
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}
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}
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}
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else if (ExpressionInput->Expression)
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{
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if (!bModifiedExpression)
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{
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bModifiedExpression = true;
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Expression->Modify();
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}
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ExpressionInput->Expression = NULL;
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}
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}
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}
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else if (UMaterialGraphNode_Comment* CommentNode = Cast<UMaterialGraphNode_Comment>(Nodes[NodeIndex]))
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{
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UMaterialExpressionComment* Comment = CommentNode->MaterialExpressionComment;
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if (Comment->MaterialExpressionEditorX != CommentNode->NodePosX
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|| Comment->MaterialExpressionEditorY != CommentNode->NodePosY
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|| Comment->Text != CommentNode->NodeComment
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|| Comment->SizeX != CommentNode->NodeWidth
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|| Comment->SizeY != CommentNode->NodeHeight
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|| Comment->CommentColor != CommentNode->CommentColor)
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{
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Comment->Modify();
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// Update positions and comments
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Comment->MaterialExpressionEditorX = CommentNode->NodePosX;
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Comment->MaterialExpressionEditorY = CommentNode->NodePosY;
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Comment->Text = CommentNode->NodeComment;
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Comment->SizeX = CommentNode->NodeWidth;
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Comment->SizeY = CommentNode->NodeHeight;
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Comment->CommentColor = CommentNode->CommentColor;
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}
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}
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}
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}
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}
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bool UMaterialGraph::IsInputActive(UEdGraphPin* GraphPin) const
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{
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if (Material && RootNode)
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{
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for (int32 Index = 0; Index < RootNode->Pins.Num(); ++Index)
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{
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if (RootNode->Pins[Index] == GraphPin)
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{
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return Material->IsPropertyActive(MaterialInputs[Index].GetProperty());
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}
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}
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}
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return true;
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}
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void UMaterialGraph::GetUnusedExpressions(TArray<UEdGraphNode*>& UnusedNodes) const
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{
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UnusedNodes.Empty();
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TArray<UEdGraphNode*> NodesToCheck;
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if (RootNode)
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{
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TArray<UEdGraphPin*> InputPins;
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RootNode->GetInputPins(InputPins);
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for (int32 Index = 0; Index < InputPins.Num(); ++Index)
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{
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check(Index < MaterialInputs.Num());
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if (MaterialInputs[Index].IsVisiblePin(Material)
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&& InputPins[Index]->LinkedTo.Num() > 0 && InputPins[Index]->LinkedTo[0])
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{
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NodesToCheck.Push(InputPins[Index]->LinkedTo[0]->GetOwningNode());
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}
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}
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for (int32 Index = 0; Index < Nodes.Num(); Index++)
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{
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UMaterialGraphNode* GraphNode = Cast<UMaterialGraphNode>(Nodes[Index]);
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if (GraphNode)
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{
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UMaterialExpressionCustomOutput* CustomOutput = Cast<UMaterialExpressionCustomOutput>(GraphNode->MaterialExpression);
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if (CustomOutput)
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{
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NodesToCheck.Push(GraphNode);
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}
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}
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}
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}
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else if (MaterialFunction)
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{
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for (int32 Index = 0; Index < Nodes.Num(); Index++)
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{
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UMaterialGraphNode* GraphNode = Cast<UMaterialGraphNode>(Nodes[Index]);
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if (GraphNode)
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{
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UMaterialExpressionFunctionOutput* FunctionOutput = Cast<UMaterialExpressionFunctionOutput>(GraphNode->MaterialExpression);
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if (FunctionOutput)
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{
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NodesToCheck.Push(GraphNode);
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}
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}
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}
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}
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// Depth-first traverse the material expression graph.
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TArray<UEdGraphNode*> UsedNodes;
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TMap<UEdGraphNode*, int32> ReachableNodes;
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while (NodesToCheck.Num() > 0)
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{
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UMaterialGraphNode* GraphNode = Cast<UMaterialGraphNode>(NodesToCheck.Pop());
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if (GraphNode)
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{
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int32* AlreadyVisited = ReachableNodes.Find(GraphNode);
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if (!AlreadyVisited)
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{
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// Mark the expression as reachable.
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ReachableNodes.Add(GraphNode, 0);
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UsedNodes.Add(GraphNode);
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// Iterate over the expression's inputs and add them to the pending stack.
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TArray<UEdGraphPin*> InputPins;
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GraphNode->GetInputPins(InputPins);
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for (int32 Index = 0; Index < InputPins.Num(); ++Index)
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{
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if (InputPins[Index]->LinkedTo.Num() > 0 && InputPins[Index]->LinkedTo[0])
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{
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NodesToCheck.Push(InputPins[Index]->LinkedTo[0]->GetOwningNode());
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}
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}
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}
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}
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}
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for (int32 Index = 0; Index < Nodes.Num(); ++Index)
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{
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UMaterialGraphNode* GraphNode = Cast<UMaterialGraphNode>(Nodes[Index]);
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if (GraphNode && !UsedNodes.Contains(GraphNode))
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{
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UnusedNodes.Add(GraphNode);
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}
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}
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}
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void UMaterialGraph::RemoveAllNodes()
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{
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MaterialInputs.Empty();
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RootNode = NULL;
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TArray<UEdGraphNode*> NodesToRemove = Nodes;
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for (int32 NodeIndex = 0; NodeIndex < NodesToRemove.Num(); ++NodeIndex)
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{
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NodesToRemove[NodeIndex]->Modify();
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RemoveNode(NodesToRemove[NodeIndex]);
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}
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}
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int32 UMaterialGraph::GetValidOutputIndex(FExpressionInput* Input) const
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{
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int32 OutputIndex = 0;
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if (Input->Expression)
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{
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TArray<FExpressionOutput>& Outputs = Input->Expression->GetOutputs();
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if (Outputs.Num() > 0)
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{
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const bool bOutputIndexIsValid = Outputs.IsValidIndex(Input->OutputIndex)
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// Attempt to handle legacy connections before OutputIndex was used that had a mask
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&& (Input->OutputIndex != 0 || Input->Mask == 0);
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for( ; OutputIndex < Outputs.Num() ; ++OutputIndex )
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{
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const FExpressionOutput& Output = Outputs[OutputIndex];
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if((bOutputIndexIsValid && OutputIndex == Input->OutputIndex)
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|| (!bOutputIndexIsValid
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&& Output.Mask == Input->Mask
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&& Output.MaskR == Input->MaskR
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&& Output.MaskG == Input->MaskG
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&& Output.MaskB == Input->MaskB
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&& Output.MaskA == Input->MaskA))
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{
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break;
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}
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}
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if (OutputIndex >= Outputs.Num())
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{
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// Work around for non-reproducible crash where OutputIndex would be out of bounds
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OutputIndex = Outputs.Num() - 1;
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}
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}
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}
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return OutputIndex;
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}
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FText UMaterialGraph::GetEmissivePinName() const
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{
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return Material->IsUIMaterial() ? LOCTEXT("UIOutputColor", "Final Color") : LOCTEXT("EmissiveColor", "Emissive Color");
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}
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FText UMaterialGraph::GetBaseColorPinName() const
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{
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return LOCTEXT("BaseColor", "Base Color");
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}
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#undef LOCTEXT_NAMESPACE
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