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254 行
14 KiB
254 行
14 KiB
using UnityEngine.Graphing;
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namespace UnityEngine.MaterialGraph
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{
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[Title("Art/BlendMode")]
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public class BlendModeNode : Function2Input, IGeneratesFunction
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{
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public BlendModeNode()
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{
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name = "BlendMode";
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}
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protected override string GetFunctionName()
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{
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return "unity_blendmode_" + System.Enum.GetName(typeof(BlendModesEnum), m_BlendMode);
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}
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protected override string GetInputSlot1Name()
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{
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return "A|Blend/Src";
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}
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protected override string GetInputSlot2Name()
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{
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return "B|Base/Dest";
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}
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[SerializeField]
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private BlendModesEnum m_BlendMode;
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public BlendModesEnum blendMode
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{
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get { return m_BlendMode; }
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set
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{
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if (m_BlendMode == value)
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return;
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m_BlendMode = value;
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if (onModified != null)
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{
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onModified(this, ModificationScope.Graph);
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}
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}
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}
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/*This is to overide input to be vector 3, not really necessary */
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/*
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protected override MaterialSlot GetInputSlot1()
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{
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return new MaterialSlot(InputSlot1Id, GetInputSlot1Name(), kInputSlot1ShaderName, SlotType.Input, SlotValueType.Vector3, Vector4.zero);
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}
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protected override MaterialSlot GetInputSlot2()
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{
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return new MaterialSlot(InputSlot2Id, GetInputSlot2Name(), kInputSlot2ShaderName, SlotType.Input, SlotValueType.Vector3, Vector4.zero);
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}
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protected override MaterialSlot GetOutputSlot()
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{
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return new MaterialSlot(OutputSlotId, GetOutputSlotName(), kOutputSlotShaderName, SlotType.Output, SlotValueType.Vector3, Vector4.zero);
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}
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*/
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public override bool hasPreview { get { return true; } }
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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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switch (m_BlendMode)
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{
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/* case BlendModesEnum.AddSub:
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outputString.AddShaderChunk(GetFunctionPrototype("arg1", "arg2"), false);
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outputString.AddShaderChunk("{", false);
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outputString.Indent();
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outputString.AddShaderChunk("return 2.0 * arg1 + arg2 - 1.0;", false);
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outputString.Deindent();
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outputString.AddShaderChunk("}", false);
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break;
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*/
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case BlendModesEnum.Burn:
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outputString.AddShaderChunk(GetFunctionPrototype("arg1", "arg2"), false);
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outputString.AddShaderChunk("{", false);
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outputString.Indent();
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outputString.AddShaderChunk("return 1.0 - (1.0 - arg2)/arg1;", false);
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outputString.Deindent();
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outputString.AddShaderChunk("}", false);
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break;
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case BlendModesEnum.Darken:
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outputString.AddShaderChunk(GetFunctionPrototype("arg1", "arg2"), false);
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outputString.AddShaderChunk("{", false);
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outputString.Indent();
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outputString.AddShaderChunk("return min(arg2,arg1);", false);
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outputString.Deindent();
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outputString.AddShaderChunk("}", false);
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break;
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case BlendModesEnum.Difference:
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outputString.AddShaderChunk(GetFunctionPrototype("arg1", "arg2"), false);
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outputString.AddShaderChunk("{", false);
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outputString.Indent();
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outputString.AddShaderChunk("return abs(arg2-arg1);", false);
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outputString.Deindent();
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outputString.AddShaderChunk("}", false);
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break;
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case BlendModesEnum.Dodge:
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outputString.AddShaderChunk(GetFunctionPrototype("arg1", "arg2"), false);
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outputString.AddShaderChunk("{", false);
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outputString.Indent();
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outputString.AddShaderChunk("return arg2 / (1.0 - arg1);", false);
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outputString.Deindent();
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outputString.AddShaderChunk("}", false);
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break;
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case BlendModesEnum.Divide:
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outputString.AddShaderChunk(GetFunctionPrototype("arg1", "arg2"), false);
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outputString.AddShaderChunk("{", false);
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outputString.Indent();
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outputString.AddShaderChunk("return arg2 / (arg1 + 0.000000000001);", false);
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outputString.Deindent();
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outputString.AddShaderChunk("}", false);
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break;
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case BlendModesEnum.Exclusion:
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outputString.AddShaderChunk(GetFunctionPrototype("arg1", "arg2"), false);
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outputString.AddShaderChunk("{", false);
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outputString.Indent();
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// outputString.AddShaderChunk("return arg2 + arg1 - (" + precision + "3(2.0,2.0,2.0)*arg2*arg1);", false);
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outputString.AddShaderChunk("return arg2 + arg1 - (2.0 *arg2*arg1);", false);
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outputString.Deindent();
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outputString.AddShaderChunk("}", false);
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break;
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case BlendModesEnum.HardLight:
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outputString.AddShaderChunk(GetFunctionPrototype("arg1", "arg2"), false);
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outputString.AddShaderChunk("{", false);
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outputString.Indent();
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outputString.AddShaderChunk(precision + outputDimension + " result1 = 1.0 - 2.0 * (1.0 - arg1) * (1.0 - arg2);", false);
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outputString.AddShaderChunk(precision + outputDimension + " result2 = 2.0 * arg1 * arg2;", false);
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outputString.AddShaderChunk(precision + outputDimension + " zeroOrOne = step(arg1, 0.5);", false);
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outputString.AddShaderChunk("return result2 * zeroOrOne + (1 - zeroOrOne) * result1;", false);
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outputString.Deindent();
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outputString.AddShaderChunk("}", false);
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break;
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case BlendModesEnum.HardMix:
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outputString.AddShaderChunk(GetFunctionPrototype("arg1", "arg2"), false);
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outputString.AddShaderChunk("{", false);
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outputString.Indent();
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outputString.AddShaderChunk("return step(1-arg1, arg2);", false);
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outputString.Deindent();
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outputString.AddShaderChunk("}", false);
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break;
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case BlendModesEnum.Lighten:
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outputString.AddShaderChunk(GetFunctionPrototype("arg1", "arg2"), false);
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outputString.AddShaderChunk("{", false);
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outputString.Indent();
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outputString.AddShaderChunk("return max(arg2,arg1);", false);
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outputString.Deindent();
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outputString.AddShaderChunk("}", false);
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break;
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case BlendModesEnum.LinearBurn:
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outputString.AddShaderChunk(GetFunctionPrototype("arg1", "arg2"), false);
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outputString.AddShaderChunk("{", false);
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outputString.Indent();
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outputString.AddShaderChunk("return arg1 + arg2 - 1.0;", false);
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outputString.Deindent();
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outputString.AddShaderChunk("}", false);
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break;
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case BlendModesEnum.LinearDodge:
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outputString.AddShaderChunk(GetFunctionPrototype("arg1", "arg2"), false);
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outputString.AddShaderChunk("{", false);
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outputString.Indent();
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outputString.AddShaderChunk("return arg1 + arg2;", false);
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outputString.Deindent();
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outputString.AddShaderChunk("}", false);
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break;
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case BlendModesEnum.LinearLight_AddSub:
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outputString.AddShaderChunk(GetFunctionPrototype("arg1", "arg2"), false);
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outputString.AddShaderChunk("{", false);
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outputString.Indent();
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outputString.AddShaderChunk("return arg2 + 2.0 * arg1 - 1.0;", false);
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outputString.Deindent();
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outputString.AddShaderChunk("}", false);
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break;
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case BlendModesEnum.Multiply:
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outputString.AddShaderChunk(GetFunctionPrototype("arg1", "arg2"), false);
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outputString.AddShaderChunk("{", false);
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outputString.Indent();
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outputString.AddShaderChunk("return arg1 * arg2;", false);
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outputString.Deindent();
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outputString.AddShaderChunk("}", false);
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break;
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case BlendModesEnum.Negation:
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outputString.AddShaderChunk(GetFunctionPrototype("arg1", "arg2"), false);
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outputString.AddShaderChunk("{", false);
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outputString.Indent();
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outputString.AddShaderChunk("return 1.0 - abs(1.0 - arg2 - arg1);", false);
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outputString.Deindent();
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outputString.AddShaderChunk("}", false);
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break;
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case BlendModesEnum.Overlay:
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outputString.AddShaderChunk(GetFunctionPrototype("arg1", "arg2"), false);
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outputString.AddShaderChunk("{", false);
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outputString.Indent();
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outputString.AddShaderChunk(precision + outputDimension + " result1 = 1.0 - 2.0 * (1.0 - arg1) * (1.0 - arg2);", false);
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outputString.AddShaderChunk(precision + outputDimension + " result2 = 2.0 * arg1 * arg2;", false);
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outputString.AddShaderChunk(precision + outputDimension + " zeroOrOne = step(arg2, 0.5);", false);
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outputString.AddShaderChunk("return result2 * zeroOrOne + (1 - zeroOrOne) * result1;", false);
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outputString.Deindent();
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outputString.AddShaderChunk("}", false);
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break;
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case BlendModesEnum.PinLight:
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outputString.AddShaderChunk(GetFunctionPrototype("arg1", "arg2"), false);
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outputString.AddShaderChunk("{", false);
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outputString.Indent();
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outputString.AddShaderChunk(precision + outputDimension + " check = step (0.5, arg1);", false);
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outputString.AddShaderChunk(precision + outputDimension + " result = check * max(2.0*(arg1 - 0.5), arg2);", false);
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outputString.AddShaderChunk("return result += (1.0 - check) * min(2.0 * arg1,arg2);", false);
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outputString.Deindent();
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outputString.AddShaderChunk("}", false);
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break;
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case BlendModesEnum.Screen:
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outputString.AddShaderChunk(GetFunctionPrototype("arg1", "arg2"), false);
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outputString.AddShaderChunk("{", false);
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outputString.Indent();
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outputString.AddShaderChunk("return 1.0 - (1.0-arg2) * (1.0 - arg1);", false);
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outputString.Deindent();
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outputString.AddShaderChunk("}", false);
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break;
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case BlendModesEnum.SoftLight:
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outputString.AddShaderChunk(GetFunctionPrototype("arg1", "arg2"), false);
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outputString.AddShaderChunk("{", false);
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outputString.Indent();
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outputString.AddShaderChunk(precision + outputDimension + " result1= 2.0 * arg2 * arg1 + arg2*arg2 - 2.0 * arg2*arg2*arg1;", false);
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outputString.AddShaderChunk(precision + outputDimension + " result2= 2.0* sqrt(arg2) * arg1 - sqrt(arg2) + 2.0 * arg2 - 2.0 * arg2*arg1;", false);
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outputString.AddShaderChunk(precision + outputDimension + " zeroOrOne = step(0.5, arg1);", false);
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outputString.AddShaderChunk("return result2 * zeroOrOne + (1 - zeroOrOne) * result1;", false);
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outputString.Deindent();
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outputString.AddShaderChunk("}", false);
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break;
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case BlendModesEnum.Substract:
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outputString.AddShaderChunk(GetFunctionPrototype("arg1", "arg2"), false);
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outputString.AddShaderChunk("{", false);
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outputString.Indent();
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outputString.AddShaderChunk("return arg2 - arg1;", false);
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outputString.Deindent();
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outputString.AddShaderChunk("}", false);
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break;
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case BlendModesEnum.VividLight:
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outputString.AddShaderChunk(GetFunctionPrototype("arg1", "arg2"), false);
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outputString.AddShaderChunk("{", false);
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outputString.Indent();
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outputString.AddShaderChunk(precision + outputDimension + " result1= 1.0-(1.0-arg2)/(2.0*arg1);", false);
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outputString.AddShaderChunk(precision + outputDimension + " result2= arg2/(2.0*(1.0-arg1));", false);
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outputString.AddShaderChunk(precision + outputDimension + " zeroOrOne = step(0.5, arg1);", false);
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outputString.AddShaderChunk("return result2 * zeroOrOne + (1 - zeroOrOne) * result1;", false);
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outputString.Deindent();
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outputString.AddShaderChunk("}", false);
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break;
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}
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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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