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105 行
3.7 KiB

using UnityEngine.Graphing;
namespace UnityEngine.MaterialGraph
{
public abstract class Function2Input : AbstractMaterialNode, IGeneratesBodyCode
{
protected const string kInputSlot1ShaderName = "Input1";
protected const string kInputSlot2ShaderName = "Input2";
protected const string kOutputSlotShaderName = "Output";
public const int InputSlot1Id = 0;
public const int InputSlot2Id = 1;
public const int OutputSlotId = 2;
public override bool hasPreview
{
get { return true; }
}
protected Function2Input()
{
UpdateNodeAfterDeserialization();
}
public sealed override void UpdateNodeAfterDeserialization()
{
AddSlot(GetInputSlot1());
AddSlot(GetInputSlot2());
AddSlot(GetOutputSlot());
RemoveSlotsNameNotMatching(validSlots);
}
protected int[] validSlots
{
get { return new[] {InputSlot1Id, InputSlot2Id, OutputSlotId}; }
}
protected virtual MaterialSlot GetInputSlot1()
{
return new MaterialSlot(InputSlot1Id, GetInputSlot1Name(), kInputSlot1ShaderName, SlotType.Input, SlotValueType.Dynamic, Vector4.zero);
}
protected virtual MaterialSlot GetInputSlot2()
{
return new MaterialSlot(InputSlot2Id, GetInputSlot2Name(), kInputSlot2ShaderName, SlotType.Input, SlotValueType.Dynamic, Vector4.zero);
}
protected virtual MaterialSlot GetOutputSlot()
{
return new MaterialSlot(OutputSlotId, GetOutputSlotName(), kOutputSlotShaderName, SlotType.Output, SlotValueType.Dynamic, Vector4.zero);
}
protected virtual string GetInputSlot1Name()
{
return "Input1";
}
protected virtual string GetInputSlot2Name()
{
return "Input2";
}
protected virtual string GetOutputSlotName()
{
return "Output";
}
protected abstract string GetFunctionName();
protected virtual string GetFunctionPrototype(string arg1Name, string arg2Name)
{
return "inline " + precision + outputDimension + " " + GetFunctionName() + " ("
+ precision + input1Dimension + " " + arg1Name + ", "
+ precision + input2Dimension + " " + arg2Name + ")";
}
public void GenerateNodeCode(ShaderGenerator visitor, GenerationMode generationMode)
{
NodeUtils.SlotConfigurationExceptionIfBadConfiguration(this, new[] { InputSlot1Id, InputSlot2Id }, new[] { OutputSlotId });
string input1Value = GetSlotValue(InputSlot1Id, generationMode);
string input2Value = GetSlotValue(InputSlot2Id, generationMode);
visitor.AddShaderChunk(precision + outputDimension + " " + GetVariableNameForSlot(OutputSlotId) + " = " + GetFunctionCallBody(input1Value, input2Value) + ";", true);
}
protected virtual string GetFunctionCallBody(string input1Value, string input2Value)
{
return GetFunctionName() + " (" + input1Value + ", " + input2Value + ")";
}
public string outputDimension
{
get { return ConvertConcreteSlotValueTypeToString(FindOutputSlot<MaterialSlot>(OutputSlotId).concreteValueType); }
}
private string input1Dimension
{
get { return ConvertConcreteSlotValueTypeToString(FindInputSlot<MaterialSlot>(InputSlot1Id).concreteValueType); }
}
private string input2Dimension
{
get { return ConvertConcreteSlotValueTypeToString(FindInputSlot<MaterialSlot>(InputSlot2Id).concreteValueType); }
}
}
}