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46 行
1.9 KiB
46 行
1.9 KiB
using UnityEngine.Graphing;
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using System.Linq;
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using System.Collections;
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namespace UnityEngine.MaterialGraph
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{
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[Title("Art/ChannelBlend")]
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public class ChannelBlend : FunctionNInNOut, IGeneratesFunction
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{
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public ChannelBlend()
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{
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name = "ChannelBlend";
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AddSlot("Mask", "mask", Graphing.SlotType.Input, SlotValueType.Vector4, Vector4.zero);
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AddSlot("RColor", "rCol", Graphing.SlotType.Input, SlotValueType.Vector4, Vector4.zero);
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AddSlot("GColor", "gCol", Graphing.SlotType.Input, SlotValueType.Vector4, Vector4.zero);
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AddSlot("BColor", "bCol", Graphing.SlotType.Input, SlotValueType.Vector4, Vector4.zero);
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AddSlot("AColor", "aCol", Graphing.SlotType.Input, SlotValueType.Vector4, Vector4.zero);
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AddSlot("BGColor", "bgCol", Graphing.SlotType.Input, SlotValueType.Vector4, Vector4.zero);
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AddSlot("BlendedColor", "blendCol", Graphing.SlotType.Output, SlotValueType.Vector4, Vector4.zero);
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}
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protected override string GetFunctionName()
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{
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return "unity_ChannelBlend";
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}
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public override bool hasPreview
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{
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get { return true; }
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}
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public void GenerateNodeFunction(ShaderGenerator visitor, GenerationMode generationMode)
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{
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var outputString = new ShaderGenerator();
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outputString.AddShaderChunk(GetFunctionPrototype(), false);
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outputString.AddShaderChunk("{", false);
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outputString.AddShaderChunk("float4 background = step(max(mask.r,max(mask.g,mask.b)), 0.001) * bgCol;", false);
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outputString.AddShaderChunk("blendCol = mask.r * rCol + mask.g * gCol + mask.b * bCol + mask.a * aCol + background;", false);
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outputString.AddShaderChunk("}", false);
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visitor.AddShaderChunk(outputString.GetShaderString(0), true);
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}
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}
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}
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