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410 行
17 KiB
410 行
17 KiB
using System;
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using UnityEngine;
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using UnityEngine.Rendering;
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namespace UnityEditor
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{
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internal class DisneyGGXGUI : ShaderGUI
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{
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public enum SurfaceType
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{
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Opaque,
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Transparent
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}
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public enum BlendMode
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{
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Lerp,
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Add,
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SoftAdd,
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Multiply,
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Premultiply
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}
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public enum SmoothnessMapChannel
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{
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MaskAlpha,
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AlbedoAlpha,
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}
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public enum EmissiveColorMode
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{
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UseEmissiveColor,
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UseEmissiveMask,
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}
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public enum DoubleSidedMode
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{
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None,
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DoubleSided,
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DoubleSidedLightingFlip,
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DoubleSidedLightingMirror,
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}
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public enum NormalMapSpace
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{
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TangentSpace,
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ObjectSpace,
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}
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public enum HeightmapMode
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{
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Parallax,
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Displacement,
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}
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private static class Styles
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{
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public static string OptionText = "Options";
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public static string SurfaceTypeText = "Surface Type";
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public static string BlendModeText = "Blend Mode";
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public static GUIContent alphaCutoffEnableText = new GUIContent("Alpha Cutoff Enable", "Threshold for alpha cutoff");
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public static GUIContent alphaCutoffText = new GUIContent("Alpha Cutoff", "Threshold for alpha cutoff");
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public static GUIContent doubleSidedModeText = new GUIContent("Double Sided", "This will render the two face of the objects (disable backface culling)");
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public static readonly string[] surfaceTypeNames = Enum.GetNames(typeof(SurfaceType));
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public static readonly string[] blendModeNames = Enum.GetNames(typeof(BlendMode));
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public static string InputsOptionsText = "Inputs options";
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public static GUIContent smoothnessMapChannelText = new GUIContent("Smoothness Source", "Smoothness texture and channel");
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public static GUIContent emissiveColorModeText = new GUIContent("Emissive Color Usage", "Use emissive color or emissive mask");
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public static string InputsText = "Inputs";
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public static string InputsMapText = "";
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public static GUIContent baseColorText = new GUIContent("Base Color", "Albedo (RGB) and Smoothness (A)");
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public static GUIContent baseColorSmoothnessText = new GUIContent("Base Color + Smoothness", "Albedo (RGB) and Smoothness (A)");
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public static GUIContent mettalicText = new GUIContent("Mettalic", "Mettalic scale factor");
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public static GUIContent smoothnessText = new GUIContent("Smoothness", "Smoothness scale factor");
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public static GUIContent maskMapESText = new GUIContent("Mask Map - M(R), AO(G), E(B), S(A)", "Mask map");
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public static GUIContent maskMapEText = new GUIContent("Mask Map - M(R), AO(G), E(B)", "Mask map");
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public static GUIContent maskMapText = new GUIContent("Mask Map - M(R), AO(G)", "Mask map");
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public static GUIContent maskMapSText = new GUIContent("Mask Map - M(R), AO(G), S(A)", "Mask map");
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public static GUIContent specularOcclusionMapText = new GUIContent("Specular Occlusion Map (RGBA)", "Specular Occlusion Map");
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public static GUIContent normalMapText = new GUIContent("Normal Map", "Normal Map (BC5) - DXT5 for test");
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public static GUIContent normalMapSpaceText = new GUIContent("Normal Map space", "");
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public static GUIContent heightMapText = new GUIContent("Height Map", "Height Map");
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public static GUIContent heightMapModeText = new GUIContent("Height Map Mode", "");
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// public static GUIContent diffuseLightingMapText = new GUIContent("DiffuseLightingMap", "Lightmap/Lightprobe data (fill by system is not done");
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public static GUIContent emissiveText = new GUIContent("Emissive Color", "Emissive");
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public static GUIContent emissiveIntensityText = new GUIContent("Emissive Intensity", "Emissive");
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}
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MaterialProperty surfaceType = null;
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MaterialProperty blendMode = null;
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MaterialProperty alphaCutoff = null;
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MaterialProperty alphaCutoffEnable = null;
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MaterialProperty doubleSidedMode = null;
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MaterialProperty smoothnessMapChannel = null;
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MaterialProperty emissiveColorMode = null;
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MaterialProperty baseColor = null;
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MaterialProperty baseColorMap = null;
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MaterialProperty mettalic = null;
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MaterialProperty smoothness = null;
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MaterialProperty maskMap = null;
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MaterialProperty specularOcclusionMap = null;
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MaterialProperty normalMap = null;
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MaterialProperty normalMapSpace = null;
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MaterialProperty heightMap = null;
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MaterialProperty heightScale = null;
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MaterialProperty heightBias = null;
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MaterialProperty heightMapMode = null;
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// MaterialProperty diffuseLightingMap = null;
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MaterialProperty emissiveColor = null;
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MaterialProperty emissiveColorMap = null;
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MaterialProperty emissiveIntensity = null;
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// MaterialProperty subSurfaceRadius = null;
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// MaterialProperty subSurfaceRadiusMap = null;
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MaterialEditor m_MaterialEditor;
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public void FindProperties (MaterialProperty[] props)
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{
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surfaceType = FindProperty("_SurfaceType", props);
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blendMode = FindProperty("_BlendMode", props);
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alphaCutoff = FindProperty("_AlphaCutoff", props);
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alphaCutoffEnable = FindProperty("_AlphaCutoffEnable", props);
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doubleSidedMode = FindProperty("_DoubleSidedMode", props);
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smoothnessMapChannel = FindProperty("_SmoothnessTextureChannel", props);
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emissiveColorMode = FindProperty("_EmissiveColorMode", props);
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baseColor = FindProperty("_BaseColor", props);
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baseColorMap = FindProperty("_BaseColorMap", props);
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mettalic = FindProperty("_Mettalic", props);
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smoothness = FindProperty("_Smoothness", props);
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maskMap = FindProperty("_MaskMap", props);
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specularOcclusionMap = FindProperty("_SpecularOcclusionMap", props);
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normalMap = FindProperty("_NormalMap", props);
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normalMapSpace = FindProperty("_NormalMapSpace", props);
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heightMap = FindProperty("_HeightMap", props);
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heightScale = FindProperty("_HeightScale", props);
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heightBias = FindProperty("_HeightBias", props);
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heightMapMode = FindProperty("_HeightMapMode", props);
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// diffuseLightingMap = FindProperty("_DiffuseLightingMap", props);
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emissiveColor = FindProperty("_EmissiveColor", props);
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emissiveColorMap = FindProperty("_EmissiveColorMap", props);
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emissiveIntensity = FindProperty("_EmissiveIntensity", props);
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}
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public override void OnGUI (MaterialEditor materialEditor, MaterialProperty[] props)
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{
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FindProperties (props); // MaterialProperties can be animated so we do not cache them but fetch them every event to ensure animated values are updated correctly
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m_MaterialEditor = materialEditor;
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Material material = materialEditor.target as Material;
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ShaderPropertiesGUI (material);
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}
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public void ShaderPropertiesGUI (Material material)
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{
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// Use default labelWidth
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EditorGUIUtility.labelWidth = 0f;
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// Detect any changes to the material
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EditorGUI.BeginChangeCheck();
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{
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GUILayout.Label(Styles.OptionText, EditorStyles.boldLabel);
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SurfaceTypePopup();
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if ((SurfaceType)surfaceType.floatValue == SurfaceType.Transparent)
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{
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BlendModePopup();
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}
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m_MaterialEditor.ShaderProperty(alphaCutoffEnable, Styles.alphaCutoffEnableText.text);
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if (alphaCutoffEnable.floatValue == 1.0)
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{
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m_MaterialEditor.ShaderProperty(alphaCutoff, Styles.alphaCutoffText.text);
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}
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m_MaterialEditor.ShaderProperty(doubleSidedMode, Styles.doubleSidedModeText.text);
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GUILayout.Label(Styles.InputsOptionsText, EditorStyles.boldLabel);
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m_MaterialEditor.ShaderProperty(smoothnessMapChannel, Styles.smoothnessMapChannelText.text);
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m_MaterialEditor.ShaderProperty(emissiveColorMode, Styles.emissiveColorModeText.text);
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bool isAlbedoAlpha = (SmoothnessMapChannel)smoothnessMapChannel.floatValue == SmoothnessMapChannel.AlbedoAlpha;
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bool useEmissiveMask = (EmissiveColorMode)emissiveColorMode.floatValue == EmissiveColorMode.UseEmissiveMask;
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GUILayout.Label(Styles.InputsText, EditorStyles.boldLabel);
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m_MaterialEditor.TexturePropertySingleLine(isAlbedoAlpha ? Styles.baseColorSmoothnessText : Styles.baseColorText, baseColorMap, baseColor);
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m_MaterialEditor.ShaderProperty(mettalic, Styles.mettalicText);
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m_MaterialEditor.ShaderProperty(smoothness, Styles.smoothnessText);
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if (isAlbedoAlpha && useEmissiveMask)
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m_MaterialEditor.TexturePropertySingleLine(Styles.maskMapESText, maskMap);
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else if (useEmissiveMask)
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m_MaterialEditor.TexturePropertySingleLine(Styles.maskMapEText, maskMap);
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else if (isAlbedoAlpha)
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m_MaterialEditor.TexturePropertySingleLine(Styles.maskMapSText, maskMap);
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else
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m_MaterialEditor.TexturePropertySingleLine(Styles.maskMapText, maskMap);
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m_MaterialEditor.TexturePropertySingleLine(Styles.specularOcclusionMapText, specularOcclusionMap);
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m_MaterialEditor.TexturePropertySingleLine(Styles.normalMapText, normalMap);
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m_MaterialEditor.ShaderProperty(normalMapSpace, Styles.normalMapSpaceText.text);
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m_MaterialEditor.TexturePropertySingleLine(Styles.heightMapText, heightMap, heightScale, heightBias);
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m_MaterialEditor.ShaderProperty(heightMapMode, Styles.heightMapModeText.text);
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if (!useEmissiveMask)
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{
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m_MaterialEditor.TexturePropertySingleLine(Styles.emissiveText, emissiveColorMap, emissiveColor);
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}
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m_MaterialEditor.ShaderProperty(emissiveIntensity, Styles.emissiveIntensityText);
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}
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if (EditorGUI.EndChangeCheck())
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{
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foreach (var obj in blendMode.targets)
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MaterialChanged((Material)obj);
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}
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}
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// TODO: try to setup minimun value to fall back to standard shaders and reverse
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public override void AssignNewShaderToMaterial (Material material, Shader oldShader, Shader newShader)
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{
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base.AssignNewShaderToMaterial(material, oldShader, newShader);
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}
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void SurfaceTypePopup()
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{
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EditorGUI.showMixedValue = surfaceType.hasMixedValue;
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var mode = (SurfaceType)surfaceType.floatValue;
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EditorGUI.BeginChangeCheck();
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mode = (SurfaceType)EditorGUILayout.Popup(Styles.SurfaceTypeText, (int)mode, Styles.surfaceTypeNames);
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if (EditorGUI.EndChangeCheck())
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{
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m_MaterialEditor.RegisterPropertyChangeUndo("Surface Type");
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surfaceType.floatValue = (float)mode;
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}
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EditorGUI.showMixedValue = false;
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}
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void BlendModePopup()
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{
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EditorGUI.showMixedValue = blendMode.hasMixedValue;
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var mode = (BlendMode)blendMode.floatValue;
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EditorGUI.BeginChangeCheck();
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mode = (BlendMode)EditorGUILayout.Popup(Styles.BlendModeText, (int)mode, Styles.blendModeNames);
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if (EditorGUI.EndChangeCheck())
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{
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m_MaterialEditor.RegisterPropertyChangeUndo("Blend Mode");
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blendMode.floatValue = (float)mode;
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}
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EditorGUI.showMixedValue = false;
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}
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static public void SetupMaterial(Material material)
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{
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// Note: keywords must be based on Material value not on MaterialProperty due to multi-edit & material animation
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// (MaterialProperty value might come from renderer material property block)
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bool alphaTestEnable = material.GetFloat("_AlphaCutoffEnable") == 1.0;
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SurfaceType surfaceType = (SurfaceType)material.GetFloat("_SurfaceType");
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BlendMode blendMode = (BlendMode)material.GetFloat("_BlendMode");
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DoubleSidedMode doubleSidedMode = (DoubleSidedMode)material.GetFloat("_DoubleSidedMode");
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if (surfaceType == SurfaceType.Opaque)
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{
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material.SetOverrideTag("RenderType", alphaTestEnable ? "TransparentCutout" : "");
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material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.One);
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material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.Zero);
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material.SetInt("_ZWrite", 1);
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material.renderQueue = alphaTestEnable ? (int)UnityEngine.Rendering.RenderQueue.AlphaTest : -1;
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}
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else
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{
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material.SetOverrideTag("RenderType", "Transparent");
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material.SetInt("_ZWrite", 0);
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material.renderQueue = (int)UnityEngine.Rendering.RenderQueue.Transparent;
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switch (blendMode)
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{
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case BlendMode.Lerp:
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material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.SrcAlpha);
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material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha);
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break;
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case BlendMode.Add:
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material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.One);
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material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.One);
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break;
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case BlendMode.SoftAdd:
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material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.OneMinusDstColor);
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material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.One);
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break;
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case BlendMode.Multiply:
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material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.DstColor);
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material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.Zero);
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break;
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case BlendMode.Premultiply:
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material.SetInt("_SrcBlend", (int)UnityEngine.Rendering.BlendMode.One);
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material.SetInt("_DstBlend", (int)UnityEngine.Rendering.BlendMode.OneMinusSrcAlpha);
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break;
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}
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}
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if (doubleSidedMode != DoubleSidedMode.None || surfaceType == SurfaceType.Transparent)
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{
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material.SetInt("_CullMode", (int)UnityEngine.Rendering.CullMode.Off);
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}
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else
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{
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material.SetInt("_CullMode", (int)UnityEngine.Rendering.CullMode.Back);
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}
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if (doubleSidedMode == DoubleSidedMode.DoubleSidedLightingFlip)
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{
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material.EnableKeyword("_DOUBLESIDED_LIGHTING_FLIP");
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material.DisableKeyword("_DOUBLESIDED_LIGHTING_MIRROR");
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}
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else if (doubleSidedMode == DoubleSidedMode.DoubleSidedLightingMirror)
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{
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material.DisableKeyword("_DOUBLESIDED_LIGHTING_FLIP");
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material.EnableKeyword("_DOUBLESIDED_LIGHTING_MIRROR");
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}
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else
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{
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material.DisableKeyword("_DOUBLESIDED_LIGHTING_FLIP");
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material.DisableKeyword("_DOUBLESIDED_LIGHTING_MIRROR");
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}
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SetKeyword(material, "_ALPHATEST_ON", alphaTestEnable);
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SetKeyword(material, "_NORMALMAP", material.GetTexture("_NormalMap"));
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SetKeyword(material, "_NORMALMAP_TANGENT_SPACE", (NormalMapSpace)material.GetFloat("_NormalMapSpace") == NormalMapSpace.TangentSpace);
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SetKeyword(material, "_MASKMAP", material.GetTexture("_MaskMap"));
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SetKeyword(material, "_SPECULAROCCLUSIONMAP", material.GetTexture("_SpecularOcclusionMap"));
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SetKeyword(material, "_SMOOTHNESS_TEXTURE_ALBEDO_CHANNEL_A", ((SmoothnessMapChannel)material.GetFloat("_SmoothnessTextureChannel")) == SmoothnessMapChannel.AlbedoAlpha);
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SetKeyword(material, "_EMISSIVE_COLOR", ((EmissiveColorMode)material.GetFloat("_EmissiveColorMode")) == EmissiveColorMode.UseEmissiveColor);
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SetKeyword(material, "_HEIGHTMAP", material.GetTexture("_HeightMap"));
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SetKeyword(material, "_HEIGHTMAP_AS_DISPLACEMENT", (HeightmapMode)material.GetFloat("_HeightMapMode") == HeightmapMode.Displacement);
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/*
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// Setup lightmap emissive flags
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MaterialGlobalIlluminationFlags flags = material.globalIlluminationFlags;
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if ((flags & (MaterialGlobalIlluminationFlags.BakedEmissive | MaterialGlobalIlluminationFlags.RealtimeEmissive)) != 0)
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{
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flags &= ~MaterialGlobalIlluminationFlags.EmissiveIsBlack;
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if (!shouldEmissionBeEnabled)
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flags |= MaterialGlobalIlluminationFlags.EmissiveIsBlack;
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material.globalIlluminationFlags = flags;
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}
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*/
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}
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static bool ShouldEmissionBeEnabled(Material mat, Color color)
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{
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//var realtimeEmission = (mat.globalIlluminationFlags & MaterialGlobalIlluminationFlags.RealtimeEmissive) > 0;
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//return color.maxColorComponent > 0.1f / 255.0f || realtimeEmission;
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return false;
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}
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bool HasValidEmissiveKeyword (Material material)
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{
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/*
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// Material animation might be out of sync with the material keyword.
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// So if the emission support is disabled on the material, but the property blocks have a value that requires it, then we need to show a warning.
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// (note: (Renderer MaterialPropertyBlock applies its values to emissionColorForRendering))
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bool hasEmissionKeyword = material.IsKeywordEnabled ("_EMISSION");
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if (!hasEmissionKeyword && ShouldEmissionBeEnabled (material, emissionColorForRendering.colorValue))
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return false;
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else
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return true;
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*/
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return true;
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}
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static void MaterialChanged(Material material)
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{
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SetupMaterial(material);
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}
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static void SetKeyword(Material m, string keyword, bool state)
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{
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if (state)
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m.EnableKeyword (keyword);
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else
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m.DisableKeyword (keyword);
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}
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}
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} // namespace UnityEditor
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