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