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5.7 KiB

using System;
using System.Collections.Generic;
using System.Linq;
#if UNITY_EDITOR
using UnityEditor;
#endif
using UnityEngine.Graphing;
namespace UnityEngine.MaterialGraph
{
[Title("Channel/Split")]
public class SplitNode : PropertyNode, IGeneratesBodyCode
{
protected const string kInputSlotName = "Input";
protected const string kOutputSlotRName = "R";
protected const string kOutputSlotGName = "G";
protected const string kOutputSlotBName = "B";
protected const string kOutputSlotAName = "A";
protected const string kOutputSlotRGBName = "RGB";
protected const string kOutputSlotRGName = "RG";
public const int InputSlotId = 0;
public const int OutputSlotRId = 1;
public const int OutputSlotGId = 2;
public const int OutputSlotBId = 3;
public const int OutputSlotAId = 4;
public const int OutputSlotRGBId = 5;
public const int OutputSlotRGId = 6;
public SplitNode()
{
name = "Split";
UpdateNodeAfterDeserialization();
}
public sealed override void UpdateNodeAfterDeserialization()
{
AddSlot(new MaterialSlot(InputSlotId, kInputSlotName, kInputSlotName, SlotType.Input, SlotValueType.Dynamic, Vector4.zero));
AddSlot(new MaterialSlot(OutputSlotRId, kOutputSlotRName, kOutputSlotRName, SlotType.Output, SlotValueType.Vector1, Vector4.zero));
AddSlot(new MaterialSlot(OutputSlotGId, kOutputSlotGName, kOutputSlotGName, SlotType.Output, SlotValueType.Vector1, Vector4.zero));
AddSlot(new MaterialSlot(OutputSlotBId, kOutputSlotBName, kOutputSlotBName, SlotType.Output, SlotValueType.Vector1, Vector4.zero));
AddSlot(new MaterialSlot(OutputSlotAId, kOutputSlotAName, kOutputSlotAName, SlotType.Output, SlotValueType.Vector1, Vector4.zero));
AddSlot(new MaterialSlot(OutputSlotRGBId, kOutputSlotRGBName, kOutputSlotRGBName, SlotType.Output, SlotValueType.Vector3, Vector4.zero));
AddSlot(new MaterialSlot(OutputSlotRGId, kOutputSlotRGName, kOutputSlotRGName, SlotType.Output, SlotValueType.Vector2, Vector4.zero));
RemoveSlotsNameNotMatching(validSlots);
}
protected int[] validSlots
{
get { return new[] { InputSlotId, OutputSlotRId, OutputSlotGId, OutputSlotBId, OutputSlotAId, OutputSlotRGBId, OutputSlotRGId }; }
}
[SerializeField]
private Vector4 m_Value;
public Vector4 value
{
get { return m_Value; }
set
{
if (m_Value == value)
return;
m_Value = value;
if (onModified != null)
onModified(this, ModificationScope.Node);
}
}
public override PropertyType propertyType { get { return PropertyType.Vector4; } }
public override void GeneratePropertyBlock(PropertyGenerator visitor, GenerationMode generationMode)
{
if (exposedState == ExposedState.Exposed)
visitor.AddShaderProperty(new VectorPropertyChunk(propertyName, description, m_Value, PropertyChunk.HideState.Visible));
}
public override void GeneratePropertyUsages(ShaderGenerator visitor, GenerationMode generationMode)
{
if (exposedState == ExposedState.Exposed || generationMode.IsPreview())
visitor.AddShaderChunk(precision + "4 " + propertyName + ";", true);
}
public void GenerateNodeCode(ShaderGenerator visitor, GenerationMode generationMode)
{
//if (exposedState == ExposedState.Exposed || generationMode.IsPreview())
// return;
var inputValue = GetSlotValue(InputSlotId, generationMode);
visitor.AddShaderChunk(precision + "4 " + propertyName + " = " + inputValue + ";", false);
//visitor.AddShaderChunk(precision + "4 " + propertyName + " = " + precision + "4 (" + m_Value.x + ", " + m_Value.y + ", " + m_Value.z + ", " + m_Value.w + ");", true);
}
protected virtual MaterialSlot GetInputSlot()
{
return new MaterialSlot(InputSlotId, GetInputSlotName(), kInputSlotName, SlotType.Input, SlotValueType.Dynamic, Vector4.zero);
}
protected virtual string GetInputSlotName() { return "Input"; }
public override PreviewProperty GetPreviewProperty()
{
return new PreviewProperty
{
m_Name = propertyName,
m_PropType = PropertyType.Vector4,
m_Vector4 = m_Value
};
}
public override string GetVariableNameForSlot(int slotId)
{
string slotOutput;
switch (slotId)
{
case OutputSlotRId:
slotOutput = ".r";
break;
case OutputSlotGId:
slotOutput = ".g";
break;
case OutputSlotBId:
slotOutput = ".b";
break;
case OutputSlotAId:
slotOutput = ".a";
break;
case OutputSlotRGBId:
slotOutput = ".rgb";
break;
case OutputSlotRGId:
slotOutput = ".rg";
break;
default:
slotOutput = "";
break;
}
return propertyName + slotOutput;
//return GetVariableNameForNode() + slotOutput;
}
public override void CollectPreviewMaterialProperties(List<PreviewProperty> properties)
{
properties.Add(GetPreviewProperty());
}
}
}