private void ExportMaterial(IIGameMaterial materialNode, BabylonScene babylonScene)
{
var name = materialNode.MaterialName;
var id = materialNode.MaxMaterial.GetGuid().ToString();
RaiseMessage(name, 1);
if (materialNode.SubMaterialCount > 0)
{
var babylonMultimaterial = new BabylonMultiMaterial { name = name, id = id };
var guids = new List<string>();
for (var index = 0; index < materialNode.SubMaterialCount; index++)
{
var subMat = materialNode.GetSubMaterial(index);
if (subMat != null)
{
guids.Add(subMat.MaxMaterial.GetGuid().ToString());
if (!referencedMaterials.Contains(subMat))
{
referencedMaterials.Add(subMat);
ExportMaterial(subMat, babylonScene);
}
}
else
{
guids.Add(Guid.Empty.ToString());
}
}
babylonMultimaterial.materials = guids.ToArray();
babylonScene.MultiMaterialsList.Add(babylonMultimaterial);
return;
}
var babylonMaterial = new BabylonStandardMaterial
{
name = name,
id = id,
ambient = materialNode.MaxMaterial.GetAmbient(0, false).ToArray(),
diffuse = materialNode.MaxMaterial.GetDiffuse(0, false).ToArray(),
specular = materialNode.MaxMaterial.GetSpecular(0, false).Scale(materialNode.MaxMaterial.GetShinStr(0, false)),
specularPower = materialNode.MaxMaterial.GetShininess(0, false) * 256,
emissive =
materialNode.MaxMaterial.GetSelfIllumColorOn(0, false)
? materialNode.MaxMaterial.GetSelfIllumColor(0, false).ToArray()
: materialNode.MaxMaterial.GetDiffuse(0, false).Scale(materialNode.MaxMaterial.GetSelfIllum(0, false)),
alpha = 1.0f - materialNode.MaxMaterial.GetXParency(0, false)
};
var stdMat = materialNode.MaxMaterial.GetParamBlock(0).Owner as IStdMat2;
if (stdMat != null)
{
babylonMaterial.backFaceCulling = !stdMat.TwoSided;
babylonMaterial.wireframe = stdMat.Wire;
// Textures
BabylonFresnelParameters fresnelParameters;
babylonMaterial.ambientTexture = ExportTexture(stdMat, 0, out fresnelParameters, babylonScene); // Ambient
babylonMaterial.diffuseTexture = ExportTexture(stdMat, 1, out fresnelParameters, babylonScene); // Diffuse
if (fresnelParameters != null)
{
babylonMaterial.diffuseFresnelParameters = fresnelParameters;
}
babylonMaterial.specularTexture = ExportTexture(stdMat, 2, out fresnelParameters, babylonScene); // Specular
babylonMaterial.emissiveTexture = ExportTexture(stdMat, 5, out fresnelParameters, babylonScene); // Emissive
if (fresnelParameters != null)
{
babylonMaterial.emissiveFresnelParameters = fresnelParameters;
if (babylonMaterial.emissive[0] == 0 &&
babylonMaterial.emissive[1] == 0 &&
babylonMaterial.emissive[2] == 0 &&
babylonMaterial.emissiveTexture == null)
{
babylonMaterial.emissive = new float[] { 1, 1, 1 };
}
}
babylonMaterial.opacityTexture = ExportTexture(stdMat, 6, out fresnelParameters, babylonScene, false, true); // Opacity
if (fresnelParameters != null)
{
babylonMaterial.opacityFresnelParameters = fresnelParameters;
if (babylonMaterial.alpha == 1 &&
babylonMaterial.opacityTexture == null)
{
babylonMaterial.alpha = 0;
}
}
babylonMaterial.bumpTexture = ExportTexture(stdMat, 8, out fresnelParameters, babylonScene); // Bump
babylonMaterial.reflectionTexture = ExportTexture(stdMat, 9, out fresnelParameters, babylonScene, true); // Reflection
if (fresnelParameters != null)
{
if (babylonMaterial.reflectionTexture == null)
{
RaiseWarning("Fallout cannot be used with reflection channel without a texture", 2);
}
else
{
babylonMaterial.reflectionFresnelParameters = fresnelParameters;
}
}
// Constraints
if (babylonMaterial.diffuseTexture != null)
{
babylonMaterial.diffuse = new[] { 1.0f, 1.0f, 1.0f };
}
if (babylonMaterial.emissiveTexture != null)
{
babylonMaterial.emissive = new float[] { 0, 0, 0 };
}
if (babylonMaterial.opacityTexture != null && babylonMaterial.diffuseTexture != null &&
babylonMaterial.diffuseTexture.name == babylonMaterial.opacityTexture.name &&
babylonMaterial.diffuseTexture.hasAlpha && !babylonMaterial.opacityTexture.getAlphaFromRGB)
{
// This is a alpha testing purpose
babylonMaterial.opacityTexture = null;
babylonMaterial.diffuseTexture.hasAlpha = true;
RaiseWarning("Opacity texture was removed because alpha from diffuse texture can be use instead", 2);
RaiseWarning("If you do not want this behavior, just set Alpha Source = None on your diffuse texture", 2);
}
}
babylonScene.MaterialsList.Add(babylonMaterial);
}
private BabylonMaterial DumpMaterial(Material material, Renderer renderer)
{
var materialNotSupported = false;
if (!materialsDictionary.ContainsKey(material.name))
{
var bMat = new BabylonStandardMaterial
{
name = material.name,
id = Guid.NewGuid().ToString(),
diffuse = new float[4],
specular = new float[4]
};
bMat.diffuse[0] = 1.0f;
bMat.diffuse[1] = 1.0f;
bMat.diffuse[2] = 1.0f;
bMat.diffuse[3] = 1.0f;
if (material.HasProperty("_Color"))
{
bMat.diffuse = material.color.ToFloat();
}
if (material.HasProperty("_SpecColor"))
{
var specColor = material.GetColor("_SpecColor");
bMat.specular = specColor.ToFloat();
}
if (material.HasProperty("_Shininess"))
{
var specShininess = material.GetFloat("_Shininess");
bMat.specularPower = specShininess * 128;
}
if (material.HasProperty("_Emission"))
{
var emissiveColor = material.GetColor("_Emission");
bMat.emissive = emissiveColor.ToFloat();
}
if (material.mainTexture && material.mainTexture.GetType().FullName == "UnityEngine.ProceduralTexture")
{
materialNotSupported = true;
Debug.LogWarning("ProceduralTexture: " + material.mainTexture.name + " not supported by Babylon.js");
}
if (material.mainTexture && !(materialNotSupported))
{
var mainTexturePath = AssetDatabase.GetAssetPath(material.mainTexture);
bMat.diffuseTexture = new BabylonTexture
{
uScale = material.mainTextureScale.x,
vScale = material.mainTextureScale.y,
uOffset = material.mainTextureOffset.x,
vOffset = material.mainTextureOffset.y
};
var mainTexture2D = material.mainTexture as Texture2D;
CopyTexture(mainTexturePath, mainTexture2D, bMat.diffuseTexture);
var alphaCuttOff = 0f;
if (material.HasProperty("_Cutoff"))
{
alphaCuttOff = material.GetFloat("_Cutoff");
}
if ((mainTexture2D && mainTexture2D.alphaIsTransparency) || alphaCuttOff > 0)
{
bMat.diffuseTexture.hasAlpha = true;
bMat.backFaceCulling = false;
}
bMat.diffuse[0] = 1.0f;
bMat.diffuse[1] = 1.0f;
bMat.diffuse[2] = 1.0f;
bMat.diffuse[3] = 1.0f;
}
bMat.bumpTexture = DumpTextureFromMaterial(material, "_BumpMap");
bMat.emissiveTexture = DumpTextureFromMaterial(material, "_Illum");
bMat.ambientTexture = DumpTextureFromMaterial(material, "_LightMap");
bMat.reflectionTexture = DumpTextureFromMaterial(material, "_Cube");
if (bMat.ambientTexture == null && renderer.lightmapIndex >= 0 && renderer.lightmapIndex != 255 && LightmapSettings.lightmaps.Length > renderer.lightmapIndex)
{
var lightmap = LightmapSettings.lightmaps[renderer.lightmapIndex].lightmapFar;
bMat.lightmapTexture = DumpTexture(lightmap, isLightmap: true);
bMat.lightmapTexture.coordinatesIndex = 1;
bMat.useLightmapAsShadowmap = true;
bMat.lightmapTexture.uScale = renderer.lightmapScaleOffset.x;
bMat.lightmapTexture.vScale = renderer.lightmapScaleOffset.y;
bMat.lightmapTexture.uOffset = renderer.lightmapScaleOffset.z;
bMat.lightmapTexture.vOffset = renderer.lightmapScaleOffset.w;
}
materialsDictionary.Add(bMat.name, bMat);
return bMat;
}
return materialsDictionary[material.name];
}
private BabylonMaterial DumpStandardMaterial(Material material, int lightmapIndex = -1, Vector4 lightmapScaleOffset = default(Vector4), int lightmapCoordIndex = -1)
{
var materialNotSupported = false;
if (!materialsDictionary.ContainsKey(material.name))
{
var bMat = new BabylonStandardMaterial
{
name = material.name,
id = Guid.NewGuid().ToString(),
diffuse = new float[4],
specular = new float[4]
};
ExporterWindow.ReportProgress(1, "Exporting standard material: " + material.name);
if (exportationOptions.DefaultLightmapMode == (int)BabylonLightmapMode.FullLightBaking)
{
bMat.disableLighting = true;
bMat.useEmissiveAsIllumination = true;
}
// Default diffuse
bMat.diffuse[0] = 1.0f;
bMat.diffuse[1] = 1.0f;
bMat.diffuse[2] = 1.0f;
bMat.diffuse[3] = 1.0f;
// Default specular
bMat.specular[0] = 0.0f;
bMat.specular[1] = 0.0f;
bMat.specular[2] = 0.0f;
bMat.specular[3] = 1.0f;
if (material.mainTexture && material.mainTexture.GetType().FullName == "UnityEngine.ProceduralTexture")
{
materialNotSupported = true;
Debug.LogWarning("ProceduralTexture: " + material.mainTexture.name + " not supported by Babylon.js");
}
if (material.HasProperty("_Shininess"))
{
var specShininess = material.GetFloat("_Shininess");
bMat.specularPower = specShininess * 128;
}
if (material.HasProperty("_Color"))
{
bMat.diffuse = material.color.ToFloat();
}
if (material.HasProperty("_SpecColor"))
{
var specColor = material.GetColor("_SpecColor");
bMat.specular = specColor.ToFloat();
}
if (material.HasProperty("_Emission"))
{
if (material.GetColorNames().IndexOf("_Emission") >= 0)
{
var emissiveColor = material.GetColor("_Emission");
bMat.emissive = emissiveColor.ToFloat();
}
else if (material.GetFloatNames().IndexOf("_Emission") >= 0)
{
// TODO: Convert Lightmapper Emission Color
UnityEngine.Debug.LogWarning("Material Emission Is Float Not Color: " + material.name);
}
}
if (material.mainTexture && !materialNotSupported)
{
var mainTexture2D = material.mainTexture as Texture2D;
var mainTexturePath = AssetDatabase.GetAssetPath(mainTexture2D);
var alphaCuttOff = 0f;
if (material.HasProperty("_Cutoff"))
{
alphaCuttOff = material.GetFloat("_Cutoff");
}
bMat.diffuseTexture = new BabylonTexture
{
uScale = material.mainTextureScale.x,
vScale = material.mainTextureScale.y,
uOffset = material.mainTextureOffset.x,
vOffset = material.mainTextureOffset.y
};
CopyTexture(mainTexturePath, mainTexture2D, bMat.diffuseTexture);
if ((mainTexture2D && mainTexture2D.alphaIsTransparency) || alphaCuttOff > 0)
{
bMat.diffuseTexture.hasAlpha = true;
bMat.backFaceCulling = false;
}
}
// Normal map
bMat.bumpTexture = DumpTextureFromMaterial(material, "_BumpMap");
if (bMat.bumpTexture != null && material.HasProperty("_BumpScale"))
{
bMat.bumpTexture.level = material.GetFloat("_BumpScale");
}
bMat.emissiveTexture = DumpTextureFromMaterial(material, "_Illum");
bMat.ambientTexture = DumpTextureFromMaterial(material, "_LightMap");
bMat.reflectionTexture = DumpTextureFromMaterial(material, "_Cube");
// If no ambient texture already (ambientTexture manually set for lightmaps on standard material)
bool hasLightmap = (exportationOptions.ExportLightmaps && lightmapIndex >= 0 && lightmapIndex != 65535 && LightmapSettings.lightmaps.Length > lightmapIndex);
if (hasLightmap && bMat.ambientTexture == null)
{
var lightmap = LightmapSettings.lightmaps[lightmapIndex].lightmapLight;
var texturePath = AssetDatabase.GetAssetPath(lightmap);
if (!String.IsNullOrEmpty(texturePath))
{
ExporterWindow.ReportProgress(1, "Dumping std material lightmap: " + lightmap.name);
bMat.lightmapTexture = DumpTexture(lightmap, isLightmap: true);
bMat.lightmapTexture.coordinatesIndex = (lightmapCoordIndex >= 0) ? lightmapCoordIndex : exportationOptions.DefaultCoordinatesIndex;
bMat.useLightmapAsShadowmap = true;
bMat.lightmapTexture.uScale = lightmapScaleOffset.x;
bMat.lightmapTexture.vScale = lightmapScaleOffset.y;
bMat.lightmapTexture.uOffset = lightmapScaleOffset.z;
bMat.lightmapTexture.vOffset = lightmapScaleOffset.w;
}
}
materialsDictionary.Add(bMat.name, bMat);
return bMat;
}
return materialsDictionary[material.name];
}