341 lines
13 KiB
C#
341 lines
13 KiB
C#
using UnityEngine;
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using System.Collections;
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using System.Collections.Generic;
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using System;
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namespace DigitalOpus.MB.Core
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{
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public class TextureBlenderStandardMetallic : TextureBlender
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{
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static Color NeutralNormalMap = new Color(.5f, .5f, 1f);
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private enum Prop{
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doColor,
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doMetallic,
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doEmission,
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doBump,
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doNone,
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}
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// This is used to cache the non texture property values. If all non-texutre property values are the same for a property for all source textures
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// then the source value will be re-used
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TextureBlenderMaterialPropertyCacheHelper sourceMaterialPropertyCache = new TextureBlenderMaterialPropertyCacheHelper();
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// These are cached values read in OnBeforeTintTexture and used when blending pixels.
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Color m_tintColor;
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float m_glossiness;
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float m_glossMapScale;
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float m_metallic;
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bool m_hasMetallicGlossMap;
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float m_bumpScale;
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bool m_shaderDoesEmission;
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Color m_emissionColor;
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// This just makes things more efficient so we arn't doing a string comparison for each pixel.
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Prop propertyToDo = Prop.doNone;
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// These are the property values that will be assigned to the result material if
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// generating an atlas for those properties.
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Color m_generatingTintedAtlasColor = Color.white;
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float m_generatingTintedAtlasMetallic = 0f;
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float m_generatingTintedAtlasGlossiness = 1f;
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float m_generatingTintedAtlasGlossMapScale = 1f;
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float m_generatingTintedAtlasBumpScale = 1f;
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Color m_generatingTintedAtlasEmission = Color.white;
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// These are the default property values that will be assigned to the result materials if
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// none of the source materials have a value for these properties.
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Color m_notGeneratingAtlasDefaultColor = Color.white;
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float m_notGeneratingAtlasDefaultMetallic = 0;
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float m_notGeneratingAtlasDefaultGlossiness = .5f;
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Color m_notGeneratingAtlasDefaultEmisionColor = Color.black;
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public bool DoesShaderNameMatch(string shaderName)
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{
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return shaderName.Equals("Standard");
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}
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public void OnBeforeTintTexture(Material sourceMat, string shaderTexturePropertyName)
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{
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if (shaderTexturePropertyName.Equals("_MainTex"))
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{
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propertyToDo = Prop.doColor;
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if (sourceMat.HasProperty("_Color"))
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{
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m_tintColor = sourceMat.GetColor("_Color");
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} else
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{
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m_tintColor = m_generatingTintedAtlasColor;
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}
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} else if (shaderTexturePropertyName.Equals("_MetallicGlossMap"))
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{
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propertyToDo = Prop.doMetallic;
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m_metallic = m_generatingTintedAtlasMetallic;
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if (sourceMat.GetTexture("_MetallicGlossMap") != null)
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{
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m_hasMetallicGlossMap = true;
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} else
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{
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m_hasMetallicGlossMap = false;
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}
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if (sourceMat.HasProperty("_Metallic"))
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{
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m_metallic = sourceMat.GetFloat("_Metallic");
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} else
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{
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m_metallic = 0f;
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}
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if (sourceMat.HasProperty("_GlossMapScale"))
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{
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m_glossMapScale = sourceMat.GetFloat("_GlossMapScale");
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} else
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{
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m_glossMapScale = 1f;
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}
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if (sourceMat.HasProperty("_Glossiness"))
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{
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m_glossiness = sourceMat.GetFloat("_Glossiness");
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} else
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{
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m_glossiness = 0f;
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}
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} else if (shaderTexturePropertyName.Equals("_BumpMap"))
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{
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propertyToDo = Prop.doBump;
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if (sourceMat.HasProperty(shaderTexturePropertyName))
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{
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if (sourceMat.HasProperty("_BumpScale"))
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m_bumpScale = sourceMat.GetFloat("_BumpScale");
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}
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else
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{
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m_bumpScale = m_generatingTintedAtlasBumpScale;
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}
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} else if (shaderTexturePropertyName.Equals("_EmissionMap"))
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{
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propertyToDo = Prop.doEmission;
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m_shaderDoesEmission = sourceMat.IsKeywordEnabled("_EMISSION");
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if (sourceMat.HasProperty("_EmissionColor")) {
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m_emissionColor = sourceMat.GetColor("_EmissionColor");
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} else
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{
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m_emissionColor = m_notGeneratingAtlasDefaultEmisionColor;
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}
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} else
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{
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propertyToDo = Prop.doNone;
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}
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}
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public Color OnBlendTexturePixel(string propertyToDoshaderPropertyName, Color pixelColor)
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{
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if (propertyToDo == Prop.doColor)
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{
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return new Color(pixelColor.r * m_tintColor.r, pixelColor.g * m_tintColor.g, pixelColor.b * m_tintColor.b, pixelColor.a * m_tintColor.a);
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}
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else if (propertyToDo == Prop.doMetallic)
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{
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if (m_hasMetallicGlossMap)
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{
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return pixelColor = new Color(pixelColor.r, pixelColor.g, pixelColor.b, pixelColor.a * m_glossMapScale);
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}
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else
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{
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return new Color(m_metallic, 0, 0, m_glossiness);
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}
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}
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else if (propertyToDo == Prop.doBump)
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{
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return Color.Lerp(NeutralNormalMap, pixelColor, m_bumpScale);
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}
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else if (propertyToDo == Prop.doEmission)
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{
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if (m_shaderDoesEmission)
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{
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return new Color(pixelColor.r * m_emissionColor.r, pixelColor.g * m_emissionColor.g, pixelColor.b * m_emissionColor.b, pixelColor.a * m_emissionColor.a);
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}
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else
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{
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return Color.black;
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}
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}
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return pixelColor;
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}
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public bool NonTexturePropertiesAreEqual(Material a, Material b)
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{
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if (!TextureBlenderFallback._compareColor(a, b, m_notGeneratingAtlasDefaultColor, "_Color"))
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{
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return false;
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}
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if (!TextureBlenderFallback._compareFloat(a, b, m_notGeneratingAtlasDefaultGlossiness, "_Glossiness"))
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{
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return false;
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}
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bool aHasMetallicTex = a.HasProperty("_MetallicGlossMap") && a.GetTexture("_MetallicGlossMap") != null;
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bool bHasMetallicTex = b.HasProperty("_MetallicGlossMap") && b.GetTexture("_MetallicGlossMap") != null;
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if (aHasMetallicTex && bHasMetallicTex)
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{
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if (!TextureBlenderFallback._compareFloat(a, b, m_notGeneratingAtlasDefaultMetallic, "_GlossMapScale"))
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{
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return false;
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}
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} else if (!aHasMetallicTex && !bHasMetallicTex)
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{
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if (!TextureBlenderFallback._compareFloat(a, b, m_notGeneratingAtlasDefaultMetallic, "_Metallic"))
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{
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return false;
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}
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} else
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{
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return false;
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}
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if (a.IsKeywordEnabled("_EMISSION") != b.IsKeywordEnabled("_EMISSION"))
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{
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return false;
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}
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if (a.IsKeywordEnabled("_EMISSION"))
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{
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if (!TextureBlenderFallback._compareColor(a, b, m_notGeneratingAtlasDefaultEmisionColor, "_EmissionColor"))
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{
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return false;
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}
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}
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return true;
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}
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public void SetNonTexturePropertyValuesOnResultMaterial(Material resultMaterial)
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{
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if (resultMaterial.GetTexture("_MainTex") != null)
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{
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resultMaterial.SetColor("_Color", m_generatingTintedAtlasColor);
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} else {
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resultMaterial.SetColor("_Color", (Color) sourceMaterialPropertyCache.GetValueIfAllSourceAreTheSameOrDefault("_Color", m_notGeneratingAtlasDefaultColor));
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}
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if (resultMaterial.GetTexture("_MetallicGlossMap") != null)
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{
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resultMaterial.SetFloat("_Metallic", m_generatingTintedAtlasMetallic);
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resultMaterial.SetFloat("_GlossMapScale", m_generatingTintedAtlasGlossMapScale);
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resultMaterial.SetFloat("_Glossiness", m_generatingTintedAtlasGlossiness);
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} else
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{
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resultMaterial.SetFloat("_Metallic", (float) sourceMaterialPropertyCache.GetValueIfAllSourceAreTheSameOrDefault("_Metallic", m_notGeneratingAtlasDefaultMetallic));
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resultMaterial.SetFloat("_Glossiness", (float) sourceMaterialPropertyCache.GetValueIfAllSourceAreTheSameOrDefault("_Glossiness", m_notGeneratingAtlasDefaultGlossiness));
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}
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if (resultMaterial.GetTexture("_BumpMap") != null)
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{
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resultMaterial.SetFloat("_BumpScale", m_generatingTintedAtlasBumpScale);
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}
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if (resultMaterial.GetTexture("_EmissionMap") != null)
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{
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resultMaterial.EnableKeyword("_EMISSION");
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resultMaterial.SetColor("_EmissionColor", m_generatingTintedAtlasEmission);
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}
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else {
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resultMaterial.DisableKeyword("_EMISSION");
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resultMaterial.SetColor("_EmissionColor", (Color) sourceMaterialPropertyCache.GetValueIfAllSourceAreTheSameOrDefault("_EmissionColor", m_notGeneratingAtlasDefaultEmisionColor));
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}
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}
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public Color GetColorIfNoTexture(Material mat, ShaderTextureProperty texPropertyName)
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{
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if (texPropertyName.name.Equals("_BumpMap"))
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{
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return new Color(.5f, .5f, 1f);
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}
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else if (texPropertyName.name.Equals("_MainTex"))
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{
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if (mat != null && mat.HasProperty("_Color"))
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{
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try
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{ //need try because can't garantee _Color is a color
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Color c = mat.GetColor("_Color");
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sourceMaterialPropertyCache.CacheMaterialProperty(mat, "_Color", c);
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}
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catch (Exception) { }
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return Color.white;
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}
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}
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else if (texPropertyName.name.Equals("_MetallicGlossMap"))
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{
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if (mat != null && mat.HasProperty("_Metallic"))
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{
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try
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{ //need try because can't garantee _Metallic is a float
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float v = mat.GetFloat("_Metallic");
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Color c = new Color(v, v, v);
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if (mat.HasProperty("_Glossiness"))
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{
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try
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{
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c.a = mat.GetFloat("_Glossiness");
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}
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catch (Exception) { }
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}
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sourceMaterialPropertyCache.CacheMaterialProperty(mat, "_Metallic", v);
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sourceMaterialPropertyCache.CacheMaterialProperty(mat, "_Glossiness", c.a);
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}
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catch (Exception) { }
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return new Color(0f, 0f, 0f, .5f);
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} else
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{
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return new Color(0f,0f,0f,.5f);
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}
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}
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else if (texPropertyName.name.Equals("_ParallaxMap"))
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{
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return new Color(0f, 0f, 0f, 0f);
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}
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else if (texPropertyName.name.Equals("_OcclusionMap"))
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{
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return new Color(1f, 1f, 1f, 1f);
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}
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else if (texPropertyName.name.Equals("_EmissionMap"))
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{
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if (mat != null)
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{
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if (mat.IsKeywordEnabled("_EMISSION"))
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{
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if (mat.HasProperty("_EmissionColor"))
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{
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try
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{
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Color c = mat.GetColor("_EmissionColor");
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sourceMaterialPropertyCache.CacheMaterialProperty(mat, "_EmissionColor", c);
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}
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catch (Exception) { }
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}
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else
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{
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return Color.black;
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}
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} else
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{
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return Color.black;
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}
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}
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}
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else if (texPropertyName.name.Equals("_DetailMask"))
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{
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return new Color(0f, 0f, 0f, 0f);
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}
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return new Color(1f, 1f, 1f, 0f);
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}
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}
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}
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