private static void DumpTransparency(Material material, BabylonPBRMaterial babylonPbrMaterial)
{
if (material.HasProperty("_Mode"))
{
var mode = material.GetFloat("_Mode");
if (mode >= 2.0f)
{
// Transparent Albedo
if (babylonPbrMaterial.albedoTexture != null && babylonPbrMaterial.albedoTexture.hasAlpha)
{
babylonPbrMaterial.useAlphaFromAlbedoTexture = true;
}
// Material Alpha
else
{
babylonPbrMaterial.alpha = babylonPbrMaterial.albedo[3];
}
}
else if (mode == 1.0f)
{
// Cutout
// Follow the texture hasAlpha property.
}
else
{
// Opaque
if (babylonPbrMaterial.albedoTexture != null)
{
babylonPbrMaterial.albedoTexture.hasAlpha = false;
}
babylonPbrMaterial.alpha = 1.0f;
}
}
}
private BabylonMaterial DumpPBRMaterial(Material material, Renderer renderer, bool metallic)
{
if (materialsDictionary.ContainsKey(material.name))
{
return(materialsDictionary[material.name]);
}
var babylonPbrMaterial = new BabylonPBRMaterial
{
name = material.name,
id = Guid.NewGuid().ToString(),
albedo = new float[4],
useEmissiveAsIllumination = true,
useSpecularOverAlpha = true,
useRadianceOverAlpha = true,
};
babylonPbrMaterial.environmentIntensity = RenderSettings.ambientIntensity;
// Albedo
if (material.HasProperty("_Color"))
{
babylonPbrMaterial.albedo = material.color.ToFloat();
}
babylonPbrMaterial.albedoTexture = DumpTextureFromMaterial(material, "_MainTex");
// Transparency
DumpTransparency(material, babylonPbrMaterial);
// Glossiess/Reflectivity
DumpGlossinessReflectivity(material, metallic, babylonPbrMaterial);
// Occlusion
babylonPbrMaterial.ambientTexture = DumpTextureFromMaterial(material, "_OcclusionMap");
if (babylonPbrMaterial.ambientTexture != null && material.HasProperty("_OcclusionStrength"))
{
babylonPbrMaterial.ambientTexture.level = material.GetFloat("_OcclusionStrength");
}
// Emissive
if (material.HasProperty("_EmissionColor"))
{
babylonPbrMaterial.emissive = material.GetColor("_EmissionColor").ToFloat();
}
babylonPbrMaterial.emissiveTexture = DumpTextureFromMaterial(material, "_EmissionMap");
// Normal
babylonPbrMaterial.bumpTexture = DumpTextureFromMaterial(material, "_BumpMap");
if (babylonPbrMaterial.bumpTexture != null && material.HasProperty("_BumpMapScale"))
{
babylonPbrMaterial.bumpTexture.level = material.GetFloat("_BumpMapScale");
}
// Reflection
babylonPbrMaterial.reflectionTexture = DumpReflectionTexture();
materialsDictionary.Add(babylonPbrMaterial.name, babylonPbrMaterial);
return(babylonPbrMaterial);
}
private void ConvertUnitySkyboxToBabylon(Camera camera, float progress)
{
// Skybox
if ((camera.clearFlags & CameraClearFlags.Skybox) == CameraClearFlags.Skybox)
{
if (RenderSettings.skybox != null)
{
if (RenderSettings.skybox.shader.name == "Skybox/Cubemap")
{
var cubeMap = RenderSettings.skybox.GetTexture("_Tex") as Cubemap;
if (cubeMap != null)
{
var skytex = new BabylonTexture();
CopyTextureCube("sceneSkybox.hdr", cubeMap, skytex);
skytex.coordinatesMode = 5;
skytex.level = RenderSettings.reflectionIntensity;
BabylonMesh skybox = new BabylonMesh();
skybox.indices = new[] { 0, 1, 2, 0, 2, 3, 4, 5, 6, 4, 6, 7, 8, 9, 10, 8, 10, 11, 12, 13, 14, 12, 14, 15, 16, 17, 18, 16, 18, 19, 20, 21, 22, 20, 22, 23 };
skybox.positions = new[] { 50.0f, -50.0f, 50.0f, -50.0f, -50.0f, 50.0f, -50.0f, 50.0f, 50.0f, 50.0f, 50.0f, 50.0f, 50.0f, 50.0f, -50.0f, -50.0f, 50.0f, -50.0f, -50.0f, -50.0f, -50.0f, 50.0f, -50.0f, -50.0f, 50.0f, 50.0f, -50.0f, 50.0f, -50.0f, -50.0f, 50.0f, -50.0f, 50.0f, 50.0f, 50.0f, 50.0f, -50.0f, 50.0f, 50.0f, -50.0f, -50.0f, 50.0f, -50.0f, -50.0f, -50.0f, -50.0f, 50.0f, -50.0f, -50.0f, 50.0f, 50.0f, -50.0f, 50.0f, -50.0f, 50.0f, 50.0f, -50.0f, 50.0f, 50.0f, 50.0f, 50.0f, -50.0f, 50.0f, 50.0f, -50.0f, -50.0f, -50.0f, -50.0f, -50.0f, -50.0f, -50.0f, 50.0f };
skybox.uvs = new[] { 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f };
skybox.normals = new[] { 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0, 0f };
var skyboxMaterial = new BabylonPBRMaterial()
{
name = "sceneSkyboxMaterial",
id = Guid.NewGuid().ToString(),
albedo = new[] { 1.0f, 1.0f, 1.0f, 1.0f },
reflectivity = new[] { 0.0f, 0.0f, 0.0f },
microSurface = 1.0f,
directIntensity = 0.0f,
specularIntensity = 0.0f,
environmentIntensity = 1.0f
};
skyboxMaterial.backFaceCulling = false;
skybox.materialId = skyboxMaterial.id;
skybox.infiniteDistance = true;
skyboxMaterial.reflectionTexture = skytex;
babylonScene.MeshesList.Add(skybox);
babylonScene.MaterialsList.Add(skyboxMaterial);
babylonScene.AddTextureCube("sceneSkyboxMaterial");
}
}
}
}
}
private void ExportMaterial(MFnDependencyNode materialDependencyNode, BabylonScene babylonScene, bool fullPBR)
{
MObject materialObject = materialDependencyNode.objectProperty;
var name = materialDependencyNode.name;
var id = materialDependencyNode.uuid().asString();
RaiseMessage(name, 1);
RaiseMessage(materialObject.apiType.ToString(), 1);
RaiseVerbose("materialObject.hasFn(MFn.Type.kBlinn)=" + materialObject.hasFn(MFn.Type.kBlinn), 2);
RaiseVerbose("materialObject.hasFn(MFn.Type.kPhong)=" + materialObject.hasFn(MFn.Type.kPhong), 2);
RaiseVerbose("materialObject.hasFn(MFn.Type.kPhongExplorer)=" + materialObject.hasFn(MFn.Type.kPhongExplorer), 2);
Print(materialDependencyNode, 2, "Print ExportMaterial materialDependencyNode");
// Retreive Babylon Material dependency node
MFnDependencyNode babylonAttributesDependencyNode = getBabylonMaterialNode(materialDependencyNode);
// Standard material
if (materialObject.hasFn(MFn.Type.kLambert))
{
if (materialObject.hasFn(MFn.Type.kBlinn))
{
RaiseMessage("Blinn shader", 2);
}
else if (materialObject.hasFn(MFn.Type.kPhong))
{
RaiseMessage("Phong shader", 2);
}
else if (materialObject.hasFn(MFn.Type.kPhongExplorer))
{
RaiseMessage("Phong E shader", 2);
}
else
{
RaiseMessage("Lambert shader", 2);
}
var lambertShader = new MFnLambertShader(materialObject);
RaiseVerbose("typeId=" + lambertShader.typeId, 2);
RaiseVerbose("typeName=" + lambertShader.typeName, 2);
RaiseVerbose("color=" + lambertShader.color.toString(), 2);
RaiseVerbose("transparency=" + lambertShader.transparency.toString(), 2);
RaiseVerbose("ambientColor=" + lambertShader.ambientColor.toString(), 2);
RaiseVerbose("incandescence=" + lambertShader.incandescence.toString(), 2);
RaiseVerbose("diffuseCoeff=" + lambertShader.diffuseCoeff, 2);
RaiseVerbose("translucenceCoeff=" + lambertShader.translucenceCoeff, 2);
BabylonStandardMaterial babylonMaterial = new BabylonStandardMaterial(id)
{
name = name,
diffuse = lambertShader.color.toArrayRGB()
};
// User custom attributes
babylonMaterial.metadata = ExportCustomAttributeFromMaterial(babylonMaterial);
bool isTransparencyModeFromBabylonMaterialNode = false;
if (babylonAttributesDependencyNode != null)
{
// Transparency mode
if (babylonAttributesDependencyNode.hasAttribute("babylonTransparencyMode"))
{
int transparencyMode = babylonAttributesDependencyNode.findPlug("babylonTransparencyMode").asInt();
babylonMaterial.transparencyMode = transparencyMode;
isTransparencyModeFromBabylonMaterialNode = true;
}
}
// Maya ambient <=> babylon emissive
babylonMaterial.emissive = lambertShader.ambientColor.toArrayRGB();
babylonMaterial.linkEmissiveWithDiffuse = true; // Incandescence (or Illumination) is not exported
if (isTransparencyModeFromBabylonMaterialNode == false || babylonMaterial.transparencyMode != 0)
{
// If transparency is not a shade of grey (shade of grey <=> R=G=B)
if (lambertShader.transparency[0] != lambertShader.transparency[1] ||
lambertShader.transparency[0] != lambertShader.transparency[2])
{
RaiseWarning("Transparency color is not a shade of grey. Only it's R channel is used.", 2);
}
// Convert transparency to opacity
babylonMaterial.alpha = 1.0f - lambertShader.transparency[0];
}
// Specular power
if (materialObject.hasFn(MFn.Type.kReflect))
{
var reflectShader = new MFnReflectShader(materialObject);
RaiseVerbose("specularColor=" + reflectShader.specularColor.toString(), 2);
RaiseVerbose("reflectivity=" + reflectShader.reflectivity, 2);
RaiseVerbose("reflectedColor=" + reflectShader.reflectedColor.toString(), 2);
babylonMaterial.specular = reflectShader.specularColor.toArrayRGB();
if (materialObject.hasFn(MFn.Type.kBlinn))
{
MFnBlinnShader blinnShader = new MFnBlinnShader(materialObject);
babylonMaterial.specularPower = (1.0f - blinnShader.eccentricity) * 256;
}
else if (materialObject.hasFn(MFn.Type.kPhong))
{
MFnPhongShader phongShader = new MFnPhongShader(materialObject);
float glossiness = (float)Math.Log(phongShader.cosPower, 2) * 10;
babylonMaterial.specularPower = glossiness / 100 * 256;
}
else if (materialObject.hasFn(MFn.Type.kPhongExplorer))
{
MFnPhongEShader phongEShader = new MFnPhongEShader(materialObject);
// No use of phongE.whiteness and phongE.highlightSize
babylonMaterial.specularPower = (1.0f - phongEShader.roughness) * 256;
}
else
{
RaiseWarning("Unknown reflect shader type: " + reflectShader.typeName + ". Specular power is default 64. Consider using a Blinn or Phong shader instead.", 2);
}
}
// TODO
//babylonMaterial.wireframe = stdMat.Wire;
// --- Textures ---
babylonMaterial.diffuseTexture = ExportTexture(materialDependencyNode, "color", babylonScene);
babylonMaterial.emissiveTexture = ExportTexture(materialDependencyNode, "ambientColor", babylonScene); // Maya ambient <=> babylon emissive
babylonMaterial.bumpTexture = ExportTexture(materialDependencyNode, "normalCamera", babylonScene);
if (isTransparencyModeFromBabylonMaterialNode == false || babylonMaterial.transparencyMode != 0)
{
babylonMaterial.opacityTexture = ExportTexture(materialDependencyNode, "transparency", babylonScene, false, true);
}
if (materialObject.hasFn(MFn.Type.kReflect))
{
babylonMaterial.specularTexture = ExportTexture(materialDependencyNode, "specularColor", babylonScene);
babylonMaterial.reflectionTexture = ExportTexture(materialDependencyNode, "reflectedColor", babylonScene, true, false, true);
}
if (isTransparencyModeFromBabylonMaterialNode == false && (babylonMaterial.alpha != 1.0f || (babylonMaterial.diffuseTexture != null && babylonMaterial.diffuseTexture.hasAlpha) || babylonMaterial.opacityTexture != null))
{
babylonMaterial.transparencyMode = (int)BabylonPBRMetallicRoughnessMaterial.TransparencyMode.ALPHABLEND;
}
// 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.transparencyMode == (int)BabylonPBRMetallicRoughnessMaterial.TransparencyMode.ALPHATEST)
{
// Set the alphaCutOff value explicitely to avoid different interpretations on different engines
// Use the glTF default value rather than the babylon one
babylonMaterial.alphaCutOff = 0.5f;
}
if (babylonAttributesDependencyNode == null)
{
// Create Babylon Material dependency node
babylonStandardMaterialNode.Create(materialDependencyNode);
// Retreive Babylon Material dependency node
babylonAttributesDependencyNode = getBabylonMaterialNode(materialDependencyNode);
}
if (babylonAttributesDependencyNode != null)
{
// Ensure all attributes are setup
babylonStandardMaterialNode.Init(babylonAttributesDependencyNode, babylonMaterial);
RaiseVerbose("Babylon Attributes of " + babylonAttributesDependencyNode.name, 2);
// Common attributes
ExportCommonBabylonAttributes(babylonAttributesDependencyNode, babylonMaterial);
// Special treatment for Unlit
if (babylonMaterial.isUnlit)
{
if ((babylonMaterial.emissive != null && (babylonMaterial.emissive[0] != 0 || babylonMaterial.emissive[1] != 0 || babylonMaterial.emissive[2] != 0)) ||
(babylonMaterial.emissiveTexture != null) ||
(babylonMaterial.emissiveFresnelParameters != null))
{
RaiseWarning("Material is unlit. Emission is discarded and replaced by diffuse.", 2);
}
// Copy diffuse to emissive
babylonMaterial.emissive = babylonMaterial.diffuse;
babylonMaterial.emissiveTexture = babylonMaterial.diffuseTexture;
babylonMaterial.emissiveFresnelParameters = babylonMaterial.diffuseFresnelParameters;
babylonMaterial.disableLighting = true;
babylonMaterial.linkEmissiveWithDiffuse = false;
}
// Special treatment for "Alpha test" transparency mode
if (babylonMaterial.transparencyMode == (int)BabylonPBRMetallicRoughnessMaterial.TransparencyMode.ALPHATEST &&
((babylonMaterial.diffuseTexture != null && babylonMaterial.opacityTexture != null && babylonMaterial.diffuseTexture.originalPath != babylonMaterial.opacityTexture.originalPath) ||
(babylonMaterial.diffuseTexture == null && babylonMaterial.opacityTexture != null)))
{
// Base color and alpha files need to be merged into a single file
Color defaultColor = Color.FromArgb((int)(babylonMaterial.diffuse[0] * 255), (int)(babylonMaterial.diffuse[1] * 255), (int)(babylonMaterial.diffuse[2] * 255));
MFnDependencyNode baseColorTextureDependencyNode = getTextureDependencyNode(materialDependencyNode, "color");
MFnDependencyNode opacityTextureDependencyNode = getTextureDependencyNode(materialDependencyNode, "transparency");
babylonMaterial.diffuseTexture = ExportBaseColorAlphaTexture(baseColorTextureDependencyNode, opacityTextureDependencyNode, babylonScene, name, defaultColor, babylonMaterial.alpha);
babylonMaterial.opacityTexture = null;
babylonMaterial.alpha = 1.0f;
}
}
babylonScene.MaterialsList.Add(babylonMaterial);
}
// Stingray PBS material
else if (isStingrayPBSMaterial(materialDependencyNode))
{
RaiseMessage("Stingray shader", 2);
var babylonMaterial = new BabylonPBRMetallicRoughnessMaterial(id)
{
name = name
};
// --- Global ---
// Color3
babylonMaterial.baseColor = materialDependencyNode.findPlug("base_color").asFloatArray();
// Alpha
string opacityAttributeName = "opacity";
if (materialDependencyNode.hasAttribute(opacityAttributeName))
{
float opacityAttributeValue = materialDependencyNode.findPlug(opacityAttributeName).asFloat();
babylonMaterial.alpha = 1.0f - opacityAttributeValue;
}
// Metallic & roughness
babylonMaterial.metallic = materialDependencyNode.findPlug("metallic").asFloat();
babylonMaterial.roughness = materialDependencyNode.findPlug("roughness").asFloat();
// Emissive
float emissiveIntensity = materialDependencyNode.findPlug("emissive_intensity").asFloat();
// Factor emissive color with emissive intensity
emissiveIntensity = Tools.Clamp(emissiveIntensity, 0f, 1f);
babylonMaterial.emissive = materialDependencyNode.findPlug("emissive").asFloatArray().Multiply(emissiveIntensity);
// --- Textures ---
// Base color & alpha
bool useColorMap = materialDependencyNode.findPlug("use_color_map").asBool();
bool useOpacityMap = false;
string useOpacityMapAttributeName = "use_opacity_map";
if (materialDependencyNode.hasAttribute(useOpacityMapAttributeName))
{
useOpacityMap = materialDependencyNode.findPlug(useOpacityMapAttributeName).asBool();
}
if (materialDependencyNode.hasAttribute("mask_threshold")) // Preset "Masked"
{
if (useColorMap && useOpacityMap)
{
// Texture is assumed to be already merged
babylonMaterial.baseTexture = ExportTexture(materialDependencyNode, "TEX_color_map", babylonScene, false, true);
}
else if (useColorMap || useOpacityMap)
{
// Merge Diffuse and Mask
Color defaultColor = Color.FromArgb((int)(babylonMaterial.baseColor[0] * 255), (int)(babylonMaterial.baseColor[1] * 255), (int)(babylonMaterial.baseColor[2] * 255));
// In Maya, a Masked StingrayPBS material without opacity or mask textures is counted as being fully transparent
// Such material is visible only when the mask threshold is set to 0
float defaultOpacity = 0;
// Either use the color map
MFnDependencyNode baseColorTextureDependencyNode = null;
if (useColorMap)
{
baseColorTextureDependencyNode = getTextureDependencyNode(materialDependencyNode, "TEX_color_map");
}
// Or the opacity map
MFnDependencyNode opacityTextureDependencyNode = null;
if (useOpacityMap)
{
opacityTextureDependencyNode = getTextureDependencyNode(materialDependencyNode, "TEX_color_map");
}
// Merge default value and texture
babylonMaterial.baseTexture = ExportBaseColorAlphaTexture(baseColorTextureDependencyNode, opacityTextureDependencyNode, babylonScene, babylonMaterial.name, defaultColor, defaultOpacity);
}
else
{
// In Maya, a Masked StingrayPBS material without opacity or mask textures is counted as being fully transparent
// Such material is visible only when the mask threshold is set to 0
babylonMaterial.alpha = 0;
}
}
else
{
if (useColorMap || useOpacityMap)
{
// Force non use map to default value
// Ex: if useOpacityMap == false, force alpha = 255 for all pixels.
babylonMaterial.baseTexture = ExportTexture(materialDependencyNode, "TEX_color_map", babylonScene, false, useOpacityMap);
}
}
if (babylonMaterial.transparencyMode == (int)BabylonPBRMetallicRoughnessMaterial.TransparencyMode.ALPHATEST)
{
// Set the alphaCutOff value explicitely to avoid different interpretations on different engines
// Use the glTF default value rather than the babylon one
babylonMaterial.alphaCutOff = 0.5f;
}
// Alpha cuttoff
if (materialDependencyNode.hasAttribute("mask_threshold")) // Preset "Masked"
{
babylonMaterial.alphaCutOff = materialDependencyNode.findPlug("mask_threshold").asFloat();
}
// Metallic, roughness, ambient occlusion
bool useMetallicMap = materialDependencyNode.findPlug("use_metallic_map").asBool();
bool useRoughnessMap = materialDependencyNode.findPlug("use_roughness_map").asBool();
string useAOMapAttributeName = "use_ao_map";
bool useAOMap = materialDependencyNode.hasAttribute(useAOMapAttributeName) && materialDependencyNode.findPlug(useAOMapAttributeName).asBool();
MFnDependencyNode metallicTextureDependencyNode = useMetallicMap ? getTextureDependencyNode(materialDependencyNode, "TEX_metallic_map") : null;
MFnDependencyNode roughnessTextureDependencyNode = useRoughnessMap ? getTextureDependencyNode(materialDependencyNode, "TEX_roughness_map") : null;
MFnDependencyNode ambientOcclusionTextureDependencyNode = useAOMap ? getTextureDependencyNode(materialDependencyNode, "TEX_ao_map") : null;
// Check if MR or ORM textures are already merged
bool areTexturesAlreadyMerged = false;
if (metallicTextureDependencyNode != null && roughnessTextureDependencyNode != null)
{
string sourcePathMetallic = getSourcePathFromFileTexture(metallicTextureDependencyNode);
string sourcePathRoughness = getSourcePathFromFileTexture(roughnessTextureDependencyNode);
if (sourcePathMetallic == sourcePathRoughness)
{
if (ambientOcclusionTextureDependencyNode != null)
{
string sourcePathAmbientOcclusion = getSourcePathFromFileTexture(ambientOcclusionTextureDependencyNode);
if (sourcePathMetallic == sourcePathAmbientOcclusion)
{
// Metallic, roughness and ambient occlusion are already merged
RaiseVerbose("Metallic, roughness and ambient occlusion are already merged", 2);
BabylonTexture ormTexture = ExportTexture(metallicTextureDependencyNode, babylonScene);
babylonMaterial.metallicRoughnessTexture = ormTexture;
babylonMaterial.occlusionTexture = ormTexture;
areTexturesAlreadyMerged = true;
}
}
else
{
// Metallic and roughness are already merged
RaiseVerbose("Metallic and roughness are already merged", 2);
BabylonTexture ormTexture = ExportTexture(metallicTextureDependencyNode, babylonScene);
babylonMaterial.metallicRoughnessTexture = ormTexture;
areTexturesAlreadyMerged = true;
}
}
}
if (areTexturesAlreadyMerged == false)
{
if (metallicTextureDependencyNode != null || roughnessTextureDependencyNode != null)
{
// Merge metallic, roughness and ambient occlusion
RaiseVerbose("Merge metallic, roughness and ambient occlusion", 2);
BabylonTexture ormTexture = ExportORMTexture(babylonScene, metallicTextureDependencyNode, roughnessTextureDependencyNode, ambientOcclusionTextureDependencyNode, babylonMaterial.metallic, babylonMaterial.roughness);
babylonMaterial.metallicRoughnessTexture = ormTexture;
if (ambientOcclusionTextureDependencyNode != null)
{
babylonMaterial.occlusionTexture = ormTexture;
}
}
else if (ambientOcclusionTextureDependencyNode != null)
{
// Simply export occlusion texture
RaiseVerbose("Simply export occlusion texture", 2);
babylonMaterial.occlusionTexture = ExportTexture(ambientOcclusionTextureDependencyNode, babylonScene);
}
}
// Normal
if (materialDependencyNode.findPlug("use_normal_map").asBool())
{
babylonMaterial.normalTexture = ExportTexture(materialDependencyNode, "TEX_normal_map", babylonScene);
}
// Emissive
bool useEmissiveMap = materialDependencyNode.findPlug("use_emissive_map").asBool();
if (useEmissiveMap)
{
babylonMaterial.emissiveTexture = ExportTexture(materialDependencyNode, "TEX_emissive_map", babylonScene, false, false, false, emissiveIntensity);
}
// Constraints
if (useColorMap)
{
babylonMaterial.baseColor = new[] { 1.0f, 1.0f, 1.0f };
}
if (useOpacityMap)
{
babylonMaterial.alpha = 1.0f;
}
if (babylonMaterial.alpha != 1.0f || (babylonMaterial.baseTexture != null && babylonMaterial.baseTexture.hasAlpha))
{
if (materialDependencyNode.hasAttribute("mask_threshold"))
{
babylonMaterial.transparencyMode = (int)BabylonPBRMetallicRoughnessMaterial.TransparencyMode.ALPHATEST;
}
else
{
babylonMaterial.transparencyMode = (int)BabylonPBRMetallicRoughnessMaterial.TransparencyMode.ALPHABLEND;
}
}
if (useMetallicMap)
{
babylonMaterial.metallic = 1.0f;
}
if (useRoughnessMap)
{
babylonMaterial.roughness = 1.0f;
}
if (useEmissiveMap)
{
babylonMaterial.emissive = new[] { 1.0f, 1.0f, 1.0f };
}
// User custom attributes
babylonMaterial.metadata = ExportCustomAttributeFromMaterial(babylonMaterial);
if (babylonAttributesDependencyNode == null)
{
// Create Babylon Material dependency node
babylonStingrayPBSMaterialNode.Create(materialDependencyNode);
// Retreive Babylon Material dependency node
babylonAttributesDependencyNode = getBabylonMaterialNode(materialDependencyNode);
}
if (babylonAttributesDependencyNode != null)
{
// Ensure all attributes are setup
babylonStingrayPBSMaterialNode.Init(babylonAttributesDependencyNode, babylonMaterial);
RaiseVerbose("Babylon Attributes of " + babylonAttributesDependencyNode.name, 2);
// Common attributes
ExportCommonBabylonAttributes(babylonAttributesDependencyNode, babylonMaterial);
babylonMaterial.doubleSided = !babylonMaterial.backFaceCulling;
babylonMaterial._unlit = babylonMaterial.isUnlit;
// Update displayed Transparency mode value based on StingrayPBS preset material
MGlobal.executeCommand($"setAttr - l false {{ \"{babylonAttributesDependencyNode.name}.babylonTransparencyMode\" }}"); // Unlock attribute
int babylonTransparencyMode = 0;
if (materialDependencyNode.hasAttribute("mask_threshold"))
{
babylonTransparencyMode = 1;
}
else if (materialDependencyNode.hasAttribute("use_opacity_map"))
{
babylonTransparencyMode = 2;
}
MGlobal.executeCommand($"setAttr \"{babylonAttributesDependencyNode.name}.babylonTransparencyMode\" {babylonTransparencyMode};");
MGlobal.executeCommand($"setAttr - l true {{ \"{babylonAttributesDependencyNode.name}.babylonTransparencyMode\" }}"); // Lock it afterwards
}
babylonScene.MaterialsList.Add(babylonMaterial);
}
// Arnold Ai Standard Surface
else if (isAiStandardSurface(materialDependencyNode))
{
RaiseMessage("Ai Standard Surface shader", 2);
var babylonMaterial = new BabylonPBRMetallicRoughnessMaterial(id)
{
name = name
};
// User custom attributes
babylonMaterial.metadata = ExportCustomAttributeFromMaterial(babylonMaterial);
// --- Global ---
bool isTransparencyModeFromBabylonMaterialNode = false;
if (babylonAttributesDependencyNode != null)
{
// Transparency mode
if (babylonAttributesDependencyNode.hasAttribute("babylonTransparencyMode"))
{
babylonMaterial.transparencyMode = babylonAttributesDependencyNode.findPlug("babylonTransparencyMode").asInt();
isTransparencyModeFromBabylonMaterialNode = true;
}
}
// Color3
float baseWeight = materialDependencyNode.findPlug("base").asFloat();
float[] baseColor = materialDependencyNode.findPlug("baseColor").asFloatArray();
babylonMaterial.baseColor = baseColor.Multiply(baseWeight);
// Alpha
MaterialDuplicationData materialDuplicationData = materialDuplicationDatas[id];
// If at least one mesh is Transparent and is using this material either directly or as a sub material
if ((isTransparencyModeFromBabylonMaterialNode == false || babylonMaterial.transparencyMode != 0) && materialDuplicationData.isArnoldTransparent())
{
float[] opacityAttributeValue = materialDependencyNode.findPlug("opacity").asFloatArray();
babylonMaterial.alpha = opacityAttributeValue[0];
}
else
{
// Do not bother about alpha
babylonMaterial.alpha = 1.0f;
}
// Metallic & roughness
babylonMaterial.metallic = materialDependencyNode.findPlug("metalness").asFloat();
babylonMaterial.roughness = materialDependencyNode.findPlug("specularRoughness").asFloat();
// Emissive
float emissionWeight = materialDependencyNode.findPlug("emission").asFloat();
babylonMaterial.emissive = materialDependencyNode.findPlug("emissionColor").asFloatArray().Multiply(emissionWeight);
var list = new List <string>();
for (int i = 0; i < materialDependencyNode.attributeCount; i++)
{
var attr = materialDependencyNode.attribute((uint)i);
var plug = materialDependencyNode.findPlug(attr);
//string aliasName;
//materialDependencyNode.getPlugsAlias(plug, out aliasName);
System.Diagnostics.Debug.WriteLine(plug.name + i.ToString());
}
// --- Clear Coat ---
float coatWeight = materialDependencyNode.findPlug("coat").asFloat();
MFnDependencyNode intensityCoatTextureDependencyNode = getTextureDependencyNode(materialDependencyNode, "coat");
if (coatWeight > 0.0f || intensityCoatTextureDependencyNode != null)
{
babylonMaterial.clearCoat.isEnabled = true;
babylonMaterial.clearCoat.indexOfRefraction = materialDependencyNode.findPlug("coatIOR").asFloat();
var coatRoughness = materialDependencyNode.findPlug("coatRoughness").asFloat();
MFnDependencyNode roughnessCoatTextureDependencyNode = getTextureDependencyNode(materialDependencyNode, "coatRoughness");
var coatTexture = ExportCoatTexture(intensityCoatTextureDependencyNode, roughnessCoatTextureDependencyNode, babylonScene, name, coatWeight, coatRoughness);
if (coatTexture != null)
{
babylonMaterial.clearCoat.texture = coatTexture;
babylonMaterial.clearCoat.roughness = 1.0f;
babylonMaterial.clearCoat.intensity = 1.0f;
}
else
{
babylonMaterial.clearCoat.intensity = coatWeight;
babylonMaterial.clearCoat.roughness = coatRoughness;
}
float[] coatColor = materialDependencyNode.findPlug("coatColor").asFloatArray();
if (coatColor[0] != 1.0f || coatColor[1] != 1.0f || coatColor[2] != 1.0f)
{
babylonMaterial.clearCoat.isTintEnabled = true;
babylonMaterial.clearCoat.tintColor = coatColor;
}
babylonMaterial.clearCoat.tintTexture = ExportTexture(materialDependencyNode, "coatColor", babylonScene);
if (babylonMaterial.clearCoat.tintTexture != null)
{
babylonMaterial.clearCoat.tintColor = new[] { 1.0f, 1.0f, 1.0f };
babylonMaterial.clearCoat.isTintEnabled = true;
}
// EyeBall deduction...
babylonMaterial.clearCoat.tintThickness = 0.65f;
babylonMaterial.clearCoat.bumpTexture = ExportTexture(materialDependencyNode, "coatNormal", babylonScene);
}
// --- Textures ---
// Base color & alpha
if ((isTransparencyModeFromBabylonMaterialNode == false || babylonMaterial.transparencyMode != 0) && materialDuplicationData.isArnoldTransparent())
{
MFnDependencyNode baseColorTextureDependencyNode = getTextureDependencyNode(materialDependencyNode, "baseColor");
MFnDependencyNode opacityTextureDependencyNode = getTextureDependencyNode(materialDependencyNode, "opacity");
if (baseColorTextureDependencyNode != null && opacityTextureDependencyNode != null &&
getSourcePathFromFileTexture(baseColorTextureDependencyNode) == getSourcePathFromFileTexture(opacityTextureDependencyNode))
{
// If the same file is used for base color and opacity
// Base color and alpha are already merged into a single file
babylonMaterial.baseTexture = ExportTexture(baseColorTextureDependencyNode, babylonScene, false, true);
}
else
{
// Base color and alpha files need to be merged into a single file
Color _baseColor = Color.FromArgb((int)(baseColor[0] * 255), (int)(baseColor[1] * 255), (int)(baseColor[2] * 255));
babylonMaterial.baseTexture = ExportBaseColorAlphaTexture(baseColorTextureDependencyNode, opacityTextureDependencyNode, babylonScene, name, _baseColor, babylonMaterial.alpha);
}
}
else
{
// Base color only
// Do not bother about alpha
babylonMaterial.baseTexture = ExportTexture(materialDependencyNode, "baseColor", babylonScene);
}
// Metallic & roughness
MFnDependencyNode metallicTextureDependencyNode = getTextureDependencyNode(materialDependencyNode, "metalness");
MFnDependencyNode roughnessTextureDependencyNode = getTextureDependencyNode(materialDependencyNode, "specularRoughness");
if (metallicTextureDependencyNode != null && roughnessTextureDependencyNode != null &&
getSourcePathFromFileTexture(metallicTextureDependencyNode) == getSourcePathFromFileTexture(roughnessTextureDependencyNode))
{
// If the same file is used for metallic and roughness
// Then we assume it's an ORM file (Red=Occlusion, Green=Roughness, Blue=Metallic)
// Metallic and roughness are already merged into a single file
babylonMaterial.metallicRoughnessTexture = ExportTexture(metallicTextureDependencyNode, babylonScene);
// Use same file for Ambient occlusion
babylonMaterial.occlusionTexture = babylonMaterial.metallicRoughnessTexture;
}
else
{
// Metallic and roughness files need to be merged into a single file
// Occlusion texture is not exported since aiStandardSurface material doesn't provide input for it
babylonMaterial.metallicRoughnessTexture = ExportORMTexture(babylonScene, metallicTextureDependencyNode, roughnessTextureDependencyNode, null, babylonMaterial.metallic, babylonMaterial.roughness);
}
// Normal
babylonMaterial.normalTexture = ExportTexture(materialDependencyNode, "normalCamera", babylonScene);
// Emissive
babylonMaterial.emissiveTexture = ExportTexture(materialDependencyNode, "emissionColor", babylonScene);
// Constraints
if (babylonMaterial.baseTexture != null)
{
babylonMaterial.baseColor = new[] { baseWeight, baseWeight, baseWeight };
babylonMaterial.alpha = 1.0f;
}
if (babylonMaterial.metallicRoughnessTexture != null)
{
babylonMaterial.metallic = 1.0f;
babylonMaterial.roughness = 1.0f;
}
if (babylonMaterial.emissiveTexture != null)
{
babylonMaterial.emissive = new[] { emissionWeight, emissionWeight, emissionWeight };
}
// If this material is containing alpha data
if (babylonMaterial.alpha != 1.0f || (babylonMaterial.baseTexture != null && babylonMaterial.baseTexture.hasAlpha))
{
if (isTransparencyModeFromBabylonMaterialNode == false)
{
babylonMaterial.transparencyMode = (int)BabylonPBRMetallicRoughnessMaterial.TransparencyMode.ALPHABLEND;
}
// If this material is assigned to both Transparent and Opaque meshes (either directly or as a sub material)
if (materialDuplicationData.isDuplicationRequired())
{
// Duplicate material
BabylonPBRMetallicRoughnessMaterial babylonMaterialCloned = DuplicateMaterial(babylonMaterial, materialDuplicationData);
// Store duplicated material too
babylonScene.MaterialsList.Add(babylonMaterialCloned);
}
}
if (babylonMaterial.transparencyMode == (int)BabylonPBRMetallicRoughnessMaterial.TransparencyMode.ALPHATEST)
{
// Set the alphaCutOff value explicitely to avoid different interpretations on different engines
// Use the glTF default value rather than the babylon one
babylonMaterial.alphaCutOff = 0.5f;
}
if (babylonAttributesDependencyNode == null)
{
// Create Babylon Material dependency node
babylonAiStandardSurfaceMaterialNode.Create(materialDependencyNode);
// Retreive Babylon Material dependency node
babylonAttributesDependencyNode = getBabylonMaterialNode(materialDependencyNode);
}
if (babylonAttributesDependencyNode != null)
{
// Ensure all attributes are setup
babylonAiStandardSurfaceMaterialNode.Init(babylonAttributesDependencyNode, babylonMaterial);
RaiseVerbose("Babylon Attributes of " + babylonAttributesDependencyNode.name, 2);
// Common attributes
ExportCommonBabylonAttributes(babylonAttributesDependencyNode, babylonMaterial);
babylonMaterial.doubleSided = !babylonMaterial.backFaceCulling;
babylonMaterial._unlit = babylonMaterial.isUnlit;
}
if (fullPBR)
{
var fullPBRMaterial = new BabylonPBRMaterial(babylonMaterial);
babylonScene.MaterialsList.Add(fullPBRMaterial);
}
else
{
babylonScene.MaterialsList.Add(babylonMaterial);
}
}
else
{
RaiseWarning("Unsupported material type '" + materialObject.apiType + "' for material named '" + materialDependencyNode.name + "'", 2);
}
}
private void DumpGlossinessReflectivity(Material material, bool metallic, BabylonPBRMaterial babylonPbrMaterial)
{
if (material.HasProperty("_Glossiness"))
{
babylonPbrMaterial.microSurface = material.GetFloat("_Glossiness");
}
if (metallic)
{
if (material.HasProperty("_Metallic"))
{
var metalness = material.GetFloat("_Metallic");
babylonPbrMaterial.reflectivity = new float[] { metalness *babylonPbrMaterial.albedo[0],
metalness *babylonPbrMaterial.albedo[1],
metalness *babylonPbrMaterial.albedo[2] };
if (babylonPbrMaterial.albedoTexture != null)
{
var albedoTexture = material.GetTexture("_MainTex") as Texture2D;
if (albedoTexture != null)
{
var albedoPixels = GetPixels(albedoTexture);
var reflectivityTexture = new Texture2D(albedoTexture.width, albedoTexture.height, TextureFormat.RGBA32, false);
reflectivityTexture.alphaIsTransparency = true;
babylonPbrMaterial.useMicroSurfaceFromReflectivityMapAlpha = true;
var metallicTexture = material.GetTexture("_MetallicGlossMap") as Texture2D;
if (metallicTexture == null)
{
for (var i = 0; i < albedoTexture.width; i++)
{
for (var j = 0; j < albedoTexture.height; j++)
{
albedoPixels[j * albedoTexture.width + i].r *= metalness;
albedoPixels[j * albedoTexture.width + i].g *= metalness;
albedoPixels[j * albedoTexture.width + i].b *= metalness;
albedoPixels[j * albedoTexture.width + i].a = babylonPbrMaterial.microSurface;
}
}
}
else
{
var metallicPixels = GetPixels(metallicTexture);
for (var i = 0; i < albedoTexture.width; i++)
{
for (var j = 0; j < albedoTexture.height; j++)
{
var metallicPixel = metallicPixels[j * albedoTexture.width + i];
albedoPixels[j * albedoTexture.width + i].r *= metallicPixel.r;
albedoPixels[j * albedoTexture.width + i].g *= metallicPixel.r;
albedoPixels[j * albedoTexture.width + i].b *= metallicPixel.r;
albedoPixels[j * albedoTexture.width + i].a = metallicPixel.a;
}
}
}
reflectivityTexture.SetPixels(albedoPixels);
reflectivityTexture.Apply();
var textureName = albedoTexture.name + "_MetallicGlossMap.png";
var babylonTexture = new BabylonTexture {
name = textureName
};
var textureScale = material.GetTextureScale("_MainTex");
babylonTexture.uScale = textureScale.x;
babylonTexture.vScale = textureScale.y;
var textureOffset = material.GetTextureOffset("_MainTex");
babylonTexture.uOffset = textureOffset.x;
babylonTexture.vOffset = textureOffset.y;
var reflectivityTexturePath = Path.Combine(Path.GetTempPath(), textureName);
File.WriteAllBytes(reflectivityTexturePath, reflectivityTexture.EncodeToPNG());
babylonScene.AddTexture(reflectivityTexturePath);
if (File.Exists(reflectivityTexturePath))
{
File.Delete(reflectivityTexturePath);
}
babylonPbrMaterial.reflectivityTexture = babylonTexture;
}
}
//else
//{
// TODO. Manage Albedo Cube Texture.
//}
}
}
else
{
if (material.HasProperty("_SpecColor"))
{
babylonPbrMaterial.reflectivity = material.GetColor("_SpecColor").ToFloat();
}
babylonPbrMaterial.reflectivityTexture = DumpTextureFromMaterial(material, "_SpecGlossMap");
if (babylonPbrMaterial.reflectivityTexture != null && babylonPbrMaterial.reflectivityTexture.hasAlpha)
{
babylonPbrMaterial.useMicroSurfaceFromReflectivityMapAlpha = true;
}
}
}
private void ExportMaterial(IIGameMaterial materialNode, BabylonScene babylonScene)
{
var name = materialNode.MaterialName;
var id = materialNode.MaxMaterial.GetGuid().ToString();
// Check if the material was already exported. The material id is unique.
if (babylonScene.MaterialsList.FirstOrDefault(m => m.id == id) != null)
{
return;
}
RaiseMessage(name, 1);
// --- prints ---
#region prints
{
RaiseVerbose("materialNode.MaterialClass=" + materialNode.MaterialClass, 2);
RaiseVerbose("materialNode.NumberOfTextureMaps=" + materialNode.NumberOfTextureMaps, 2);
var propertyContainer = materialNode.IPropertyContainer;
RaiseVerbose("propertyContainer=" + propertyContainer, 2);
if (propertyContainer != null)
{
RaiseVerbose("propertyContainer.NumberOfProperties=" + propertyContainer.NumberOfProperties, 3);
for (int i = 0; i < propertyContainer.NumberOfProperties; i++)
{
var prop = propertyContainer.GetProperty(i);
if (prop != null)
{
RaiseVerbose("propertyContainer.GetProperty(" + i + ")=" + prop.Name, 3);
switch (prop.GetType_)
{
case PropType.StringProp:
string propertyString = "";
RaiseVerbose("prop.GetPropertyValue(ref propertyString, 0)=" + prop.GetPropertyValue(ref propertyString, 0), 4);
RaiseVerbose("propertyString=" + propertyString, 4);
break;
case PropType.IntProp:
int propertyInt = 0;
RaiseVerbose("prop.GetPropertyValue(ref propertyInt, 0)=" + prop.GetPropertyValue(ref propertyInt, 0), 4);
RaiseVerbose("propertyInt=" + propertyInt, 4);
break;
case PropType.FloatProp:
float propertyFloat = 0;
RaiseVerbose("prop.GetPropertyValue(ref propertyFloat, 0, true)=" + prop.GetPropertyValue(ref propertyFloat, 0, true), 4);
RaiseVerbose("propertyFloat=" + propertyFloat, 4);
RaiseVerbose("prop.GetPropertyValue(ref propertyFloat, 0, false)=" + prop.GetPropertyValue(ref propertyFloat, 0, false), 4);
RaiseVerbose("propertyFloat=" + propertyFloat, 4);
break;
case PropType.Point3Prop:
IPoint3 propertyPoint3 = Loader.Global.Point3.Create(0, 0, 0);
RaiseVerbose("prop.GetPropertyValue(ref propertyPoint3, 0)=" + prop.GetPropertyValue(propertyPoint3, 0), 4);
RaiseVerbose("propertyPoint3=" + Point3ToString(propertyPoint3), 4);
break;
case PropType.Point4Prop:
IPoint4 propertyPoint4 = Loader.Global.Point4.Create(0, 0, 0, 0);
RaiseVerbose("prop.GetPropertyValue(ref propertyPoint4, 0)=" + prop.GetPropertyValue(propertyPoint4, 0), 4);
RaiseVerbose("propertyPoint4=" + Point4ToString(propertyPoint4), 4);
break;
case PropType.UnknownProp:
default:
RaiseVerbose("Unknown property type", 4);
break;
}
}
else
{
RaiseVerbose("propertyContainer.GetProperty(" + i + ") IS NULL", 3);
}
}
}
}
#endregion
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)
{
if (subMat.SubMaterialCount > 0)
{
RaiseError("MultiMaterials as inputs to other MultiMaterials are not supported!");
}
else
{
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 unlitProperty = materialNode.IPropertyContainer.QueryProperty("BabylonUnlit");
bool isUnlit = unlitProperty != null?unlitProperty.GetBoolValue() : false;
// check custom exporters first, to allow custom exporters of supported material classes
IMaxMaterialExporter materialExporter;
materialExporters.TryGetValue(new ClassIDWrapper(materialNode.MaxMaterial.ClassID), out materialExporter);
var stdMat = materialNode.MaxMaterial.NumParamBlocks > 0 ? materialNode.MaxMaterial.GetParamBlock(0).Owner as IStdMat2 : null;
if (isBabylonExported && materialExporter != null && materialExporter is IMaxBabylonMaterialExporter)
{
IMaxBabylonMaterialExporter babylonMaterialExporter = materialExporter as IMaxBabylonMaterialExporter;
BabylonMaterial babylonMaterial = babylonMaterialExporter.ExportBabylonMaterial(materialNode);
if (babylonMaterial == null)
{
string message = string.Format("Custom Babylon material exporter failed to export | Exporter: '{0}' | Material Name: '{1}' | Material Class: '{2}'",
babylonMaterialExporter.GetType().ToString(), materialNode.MaterialName, materialNode.MaterialClass);
RaiseWarning(message, 2);
}
else
{
babylonScene.MaterialsList.Add(babylonMaterial);
}
}
else if (isGltfExported && materialExporter != null && materialExporter is IMaxGLTFMaterialExporter)
{
// add a basic babylon material to the list to forward the max material reference
var babylonMaterial = new BabylonMaterial(id)
{
maxGameMaterial = materialNode,
name = name
};
babylonScene.MaterialsList.Add(babylonMaterial);
}
else if (stdMat != null)
{
var babylonMaterial = new BabylonStandardMaterial(id)
{
maxGameMaterial = materialNode,
name = name,
isUnlit = isUnlit,
diffuse = materialNode.MaxMaterial.GetDiffuse(0, false).ToArray(),
alpha = 1.0f - materialNode.MaxMaterial.GetXParency(0, false)
};
babylonMaterial.backFaceCulling = !stdMat.TwoSided;
babylonMaterial.wireframe = stdMat.Wire;
var isSelfIllumColor = materialNode.MaxMaterial.GetSelfIllumColorOn(0, false);
var maxSpecularColor = materialNode.MaxMaterial.GetSpecular(0, false).ToArray();
if (isUnlit == false)
{
babylonMaterial.ambient = materialNode.MaxMaterial.GetAmbient(0, false).ToArray();
babylonMaterial.specular = maxSpecularColor.Multiply(materialNode.MaxMaterial.GetShinStr(0, false));
babylonMaterial.specularPower = materialNode.MaxMaterial.GetShininess(0, false) * 256;
babylonMaterial.emissive =
isSelfIllumColor
? materialNode.MaxMaterial.GetSelfIllumColor(0, false).ToArray()
: materialNode.MaxMaterial.GetDiffuse(0, false).Scale(materialNode.MaxMaterial.GetSelfIllum(0, false)); // compute the pre-multiplied emissive color
// If Self-Illumination color checkbox is checked
// Then self-illumination is assumed to be pre-multiplied
// Otherwise self-illumination needs to be multiplied with diffuse
// linkEmissiveWithDiffuse attribute tells the Babylon engine to perform such multiplication
babylonMaterial.linkEmissiveWithDiffuse = !isSelfIllumColor;
// useEmissiveAsIllumination attribute tells the Babylon engine to use pre-multiplied emissive as illumination
babylonMaterial.useEmissiveAsIllumination = isSelfIllumColor;
// Store the emissive value (before multiplication) for gltf
babylonMaterial.selfIllum = materialNode.MaxMaterial.GetSelfIllum(0, false);
}
// Textures
BabylonFresnelParameters fresnelParameters;
babylonMaterial.diffuseTexture = ExportTexture(stdMat, 1, out fresnelParameters, babylonScene); // Diffuse
if (fresnelParameters != null)
{
babylonMaterial.diffuseFresnelParameters = fresnelParameters;
}
if ((babylonMaterial.alpha == 1.0f && babylonMaterial.opacityTexture == null) &&
babylonMaterial.diffuseTexture != null &&
(babylonMaterial.diffuseTexture.originalPath.EndsWith(".tif") || babylonMaterial.diffuseTexture.originalPath.EndsWith(".tiff")) &&
babylonMaterial.diffuseTexture.hasAlpha)
{
RaiseWarning($"Diffuse texture named {babylonMaterial.diffuseTexture.originalPath} is a .tif file and its Alpha Source is 'Image Alpha' by default.", 2);
RaiseWarning($"If you don't want material to be in BLEND mode, set diffuse texture Alpha Source to 'None (Opaque)'", 2);
}
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;
}
}
if (isUnlit == false)
{
babylonMaterial.ambientTexture = ExportTexture(stdMat, 0, out fresnelParameters, babylonScene); // Ambient
babylonMaterial.specularTexture = ExportSpecularTexture(materialNode, maxSpecularColor, babylonScene);
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.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);
}
else if (isPhysicalMaterial(materialNode))
{
var propertyContainer = materialNode.IPropertyContainer;
var babylonMaterial = new BabylonPBRMetallicRoughnessMaterial(id)
{
maxGameMaterial = materialNode,
name = name,
isUnlit = isUnlit
};
// --- Global ---
// Alpha
//var alphaFromXParency = 1.0f - materialNode.MaxMaterial.GetXParency(0, false);
var alphaFromPropertyContainer = 1.0f - propertyContainer.GetFloatProperty(17);
//RaiseMessage("alphaFromXParency=" + alphaFromXParency, 2);
//RaiseMessage("alphaFromPropertyContainer=" + alphaFromPropertyContainer, 2);
babylonMaterial.alpha = alphaFromPropertyContainer;
babylonMaterial.baseColor = materialNode.MaxMaterial.GetDiffuse(0, false).ToArray();
var invertRoughness = propertyContainer.GetBoolProperty(5);
if (isUnlit == false)
{
babylonMaterial.metallic = propertyContainer.GetFloatProperty(6);
babylonMaterial.roughness = propertyContainer.GetFloatProperty(4);
if (invertRoughness)
{
// Inverse roughness
babylonMaterial.roughness = 1 - babylonMaterial.roughness;
}
// Self illumination is computed from emission color, luminance, temperature and weight
babylonMaterial.emissive = materialNode.MaxMaterial.GetSelfIllumColorOn(0, false)
? materialNode.MaxMaterial.GetSelfIllumColor(0, false).ToArray()
: materialNode.MaxMaterial.GetDiffuse(0, false).Scale(materialNode.MaxMaterial.GetSelfIllum(0, false));
}
else
{
// Ignore specified roughness and metallic values
babylonMaterial.metallic = 0;
babylonMaterial.roughness = 0.9f;
}
// --- Textures ---
// 1 - base color ; 9 - transparancy weight
ITexmap colorTexmap = _getTexMap(materialNode, 1);
ITexmap alphaTexmap = _getTexMap(materialNode, 9);
babylonMaterial.baseTexture = ExportBaseColorAlphaTexture(colorTexmap, alphaTexmap, babylonMaterial.baseColor, babylonMaterial.alpha, babylonScene, name);
if (isUnlit == false)
{
// Metallic, roughness, ambient occlusion
ITexmap metallicTexmap = _getTexMap(materialNode, 5);
ITexmap roughnessTexmap = _getTexMap(materialNode, 4);
ITexmap ambientOcclusionTexmap = _getTexMap(materialNode, 6); // Use diffuse roughness map as ambient occlusion
// Check if MR or ORM textures are already merged
bool areTexturesAlreadyMerged = false;
if (metallicTexmap != null && roughnessTexmap != null)
{
string sourcePathMetallic = getSourcePath(metallicTexmap);
string sourcePathRoughness = getSourcePath(roughnessTexmap);
if (sourcePathMetallic == sourcePathRoughness)
{
if (ambientOcclusionTexmap != null && exportParameters.mergeAOwithMR)
{
string sourcePathAmbientOcclusion = getSourcePath(ambientOcclusionTexmap);
if (sourcePathMetallic == sourcePathAmbientOcclusion)
{
// Metallic, roughness and ambient occlusion are already merged
RaiseVerbose("Metallic, roughness and ambient occlusion are already merged", 2);
BabylonTexture ormTexture = ExportTexture(metallicTexmap, babylonScene);
babylonMaterial.metallicRoughnessTexture = ormTexture;
babylonMaterial.occlusionTexture = ormTexture;
areTexturesAlreadyMerged = true;
}
}
else
{
// Metallic and roughness are already merged
RaiseVerbose("Metallic and roughness are already merged", 2);
BabylonTexture ormTexture = ExportTexture(metallicTexmap, babylonScene);
babylonMaterial.metallicRoughnessTexture = ormTexture;
areTexturesAlreadyMerged = true;
}
}
}
if (areTexturesAlreadyMerged == false)
{
if (metallicTexmap != null || roughnessTexmap != null)
{
// Merge metallic, roughness and ambient occlusion
RaiseVerbose("Merge metallic and roughness (and ambient occlusion if `mergeAOwithMR` is enabled)", 2);
BabylonTexture ormTexture = ExportORMTexture(exportParameters.mergeAOwithMR ? ambientOcclusionTexmap : null, roughnessTexmap, metallicTexmap, babylonMaterial.metallic, babylonMaterial.roughness, babylonScene, invertRoughness);
babylonMaterial.metallicRoughnessTexture = ormTexture;
if (ambientOcclusionTexmap != null)
{
if (exportParameters.mergeAOwithMR)
{
// if the ambient occlusion texture map uses a different set of texture coordinates than
// metallic roughness, create a new instance of the ORM BabylonTexture with the different texture
// coordinate indices
var ambientOcclusionTexture = _getBitmapTex(ambientOcclusionTexmap);
var texCoordIndex = ambientOcclusionTexture.UVGen.MapChannel - 1;
if (texCoordIndex != ormTexture.coordinatesIndex)
{
babylonMaterial.occlusionTexture = new BabylonTexture(ormTexture);
babylonMaterial.occlusionTexture.coordinatesIndex = texCoordIndex;
// Set UVs/texture transform for the ambient occlusion texture
var uvGen = _exportUV(ambientOcclusionTexture.UVGen, babylonMaterial.occlusionTexture);
}
else
{
babylonMaterial.occlusionTexture = ormTexture;
}
}
else
{
babylonMaterial.occlusionTexture = ExportPBRTexture(materialNode, 6, babylonScene);
}
}
}
else if (ambientOcclusionTexmap != null)
{
// Simply export occlusion texture
RaiseVerbose("Simply export occlusion texture", 2);
babylonMaterial.occlusionTexture = ExportTexture(ambientOcclusionTexmap, babylonScene);
}
}
if (ambientOcclusionTexmap != null && !exportParameters.mergeAOwithMR && babylonMaterial.occlusionTexture == null)
{
RaiseVerbose("Exporting occlusion texture without merging with metallic roughness", 2);
babylonMaterial.occlusionTexture = ExportTexture(ambientOcclusionTexmap, babylonScene);
}
var normalMapAmount = propertyContainer.GetFloatProperty(91);
babylonMaterial.normalTexture = ExportPBRTexture(materialNode, 30, babylonScene, normalMapAmount);
babylonMaterial.emissiveTexture = ExportPBRTexture(materialNode, 17, babylonScene);
}
if (babylonMaterial.alpha != 1.0f || (babylonMaterial.baseTexture != null && babylonMaterial.baseTexture.hasAlpha))
{
var alphaTestProperty = materialNode.IPropertyContainer.QueryProperty("BabylonAlphaTest");
bool isAlphaTest = alphaTestProperty != null?alphaTestProperty.GetBoolValue() : false;
babylonMaterial.transparencyMode = isAlphaTest ? (int)BabylonPBRMetallicRoughnessMaterial.TransparencyMode.ALPHATEST : (int)BabylonPBRMetallicRoughnessMaterial.TransparencyMode.ALPHABLEND;
}
if (babylonMaterial.emissiveTexture != null)
{
babylonMaterial.emissive = new[] { 1.0f, 1.0f, 1.0f };
}
if (babylonMaterial.metallicRoughnessTexture != null)
{
babylonMaterial.metallic = 1.0f;
babylonMaterial.roughness = 1.0f;
}
babylonScene.MaterialsList.Add(babylonMaterial);
}
else if (isArnoldMaterial(materialNode))
{
var propertyContainer = materialNode.IPropertyContainer;
var babylonMaterial = new BabylonPBRMetallicRoughnessMaterial(id)
{
maxGameMaterial = materialNode,
name = name,
isUnlit = isUnlit
};
// Alpha
babylonMaterial.alpha = 1.0f - propertyContainer.GetFloatProperty(32);
// Color: base * weight
float[] baseColor = propertyContainer.GetPoint3Property(5).ToArray();
float baseWeight = propertyContainer.GetFloatProperty(2);
babylonMaterial.baseColor = baseColor.Multiply(baseWeight);
// Metallic & roughness
bool invertRoughness = false;
babylonMaterial.roughness = propertyContainer.GetFloatProperty(17); // specular_roughness
babylonMaterial.metallic = propertyContainer.GetFloatProperty(29);
// Emissive: emission_color * emission
float[] emissionColor = propertyContainer.QueryProperty("emission_color").GetPoint3Property().ToArray();
float emissionWeight = propertyContainer.QueryProperty("emission").GetFloatValue();
if (emissionColor != null && emissionWeight > 0f)
{
babylonMaterial.emissive = emissionColor.Multiply(emissionWeight);
}
// --- Clear Coat ---
float coatWeight = propertyContainer.GetFloatProperty(75);
if (coatWeight > 0.0f)
{
babylonMaterial.clearCoat.isEnabled = true;
babylonMaterial.clearCoat.indexOfRefraction = propertyContainer.GetFloatProperty(84);
ITexmap intensityTexmap = _getTexMap(materialNode, 23);
ITexmap roughnessTexmap = _getTexMap(materialNode, 25);
var coatRoughness = propertyContainer.GetFloatProperty(81);
var coatTexture = ExportClearCoatTexture(intensityTexmap, roughnessTexmap, coatWeight, coatRoughness, babylonScene, name, invertRoughness);
if (coatTexture != null)
{
babylonMaterial.clearCoat.texture = coatTexture;
babylonMaterial.clearCoat.roughness = 1.0f;
babylonMaterial.clearCoat.intensity = 1.0f;
}
else
{
babylonMaterial.clearCoat.intensity = coatWeight;
babylonMaterial.clearCoat.roughness = coatRoughness;
}
float[] coatColor = propertyContainer.GetPoint3Property(78).ToArray();
if (coatColor[0] != 1.0f || coatColor[1] != 1.0f || coatColor[2] != 1.0f)
{
babylonMaterial.clearCoat.isTintEnabled = true;
babylonMaterial.clearCoat.tintColor = coatColor;
}
babylonMaterial.clearCoat.tintTexture = ExportPBRTexture(materialNode, 24, babylonScene);
if (babylonMaterial.clearCoat.tintTexture != null)
{
babylonMaterial.clearCoat.tintColor = new[] { 1.0f, 1.0f, 1.0f };
babylonMaterial.clearCoat.isTintEnabled = true;
}
// EyeBall deduction...
babylonMaterial.clearCoat.tintThickness = 0.65f;
babylonMaterial.clearCoat.bumpTexture = ExportPBRTexture(materialNode, 27, babylonScene);
}
// --- Textures ---
// 1 - base_color ; 5 - specular_roughness ; 9 - metalness ; 10 - transparent
ITexmap colorTexmap = _getTexMap(materialNode, 1);
ITexmap alphaTexmap = _getTexMap(materialNode, 10);
babylonMaterial.baseTexture = ExportBaseColorAlphaTexture(colorTexmap, alphaTexmap, babylonMaterial.baseColor, babylonMaterial.alpha, babylonScene, name);
if (isUnlit == false)
{
// Metallic, roughness
ITexmap metallicTexmap = _getTexMap(materialNode, 9);
ITexmap roughnessTexmap = _getTexMap(materialNode, 5);
ITexmap ambientOcclusionTexmap = _getTexMap(materialNode, 6); // Use diffuse roughness map as ambient occlusion
// Check if MR textures are already merged
bool areTexturesAlreadyMerged = false;
if (metallicTexmap != null && roughnessTexmap != null)
{
string sourcePathMetallic = getSourcePath(metallicTexmap);
string sourcePathRoughness = getSourcePath(roughnessTexmap);
if (sourcePathMetallic == sourcePathRoughness)
{
// Metallic and roughness are already merged
RaiseVerbose("Metallic and roughness are already merged", 2);
BabylonTexture ormTexture = ExportTexture(metallicTexmap, babylonScene);
babylonMaterial.metallicRoughnessTexture = ormTexture;
// The already merged map is assumed to contain Ambient Occlusion in R channel
if (ambientOcclusionTexmap != null)
{
// if the ambient occlusion texture map uses a different set of texture coordinates than
// metallic roughness, create a new instance of the ORM BabylonTexture with the different texture
// coordinate indices
var ambientOcclusionTexture = _getBitmapTex(ambientOcclusionTexmap);
var texCoordIndex = ambientOcclusionTexture.UVGen.MapChannel - 1;
if (texCoordIndex != ormTexture.coordinatesIndex)
{
babylonMaterial.occlusionTexture = new BabylonTexture(ormTexture);
babylonMaterial.occlusionTexture.coordinatesIndex = texCoordIndex;
// Set UVs/texture transform for the ambient occlusion texture
var uvGen = _exportUV(ambientOcclusionTexture.UVGen, babylonMaterial.occlusionTexture);
}
else
{
babylonMaterial.occlusionTexture = ormTexture;
}
}
else
{
babylonMaterial.occlusionTexture = ormTexture;
}
areTexturesAlreadyMerged = true;
}
}
if (areTexturesAlreadyMerged == false)
{
if (metallicTexmap != null || roughnessTexmap != null)
{
// Merge metallic, roughness
RaiseVerbose("Merge metallic and roughness", 2);
BabylonTexture ormTexture = ExportORMTexture(null, roughnessTexmap, metallicTexmap, babylonMaterial.metallic, babylonMaterial.roughness, babylonScene, invertRoughness);
babylonMaterial.metallicRoughnessTexture = ormTexture;
}
}
var numOfTexMapSlots = materialNode.MaxMaterial.NumSubTexmaps;
for (int i = 0; i < numOfTexMapSlots; i++)
{
if (materialNode.MaxMaterial.GetSubTexmapSlotName(i) == "normal")
{
babylonMaterial.normalTexture = ExportPBRTexture(materialNode, i, babylonScene);
}
else if (materialNode.MaxMaterial.GetSubTexmapSlotName(i) == "emission")
{
babylonMaterial.emissiveTexture = ExportPBRTexture(materialNode, i, babylonScene);
}
}
}
// Constraints
if (babylonMaterial.baseTexture != null)
{
babylonMaterial.baseColor = new[] { 1.0f, 1.0f, 1.0f };
babylonMaterial.alpha = 1.0f;
}
if (babylonMaterial.alpha != 1.0f || (babylonMaterial.baseTexture != null && babylonMaterial.baseTexture.hasAlpha))
{
babylonMaterial.transparencyMode = (int)BabylonPBRMetallicRoughnessMaterial.TransparencyMode.ALPHABLEND;
}
if (babylonMaterial.metallicRoughnessTexture != null)
{
babylonMaterial.metallic = 1.0f;
babylonMaterial.roughness = 1.0f;
}
if (exportParameters.pbrFull)
{
var fullPBR = new BabylonPBRMaterial(babylonMaterial);
fullPBR.maxGameMaterial = babylonMaterial.maxGameMaterial;
babylonScene.MaterialsList.Add(fullPBR);
}
else
{
// Add the material to the scene
babylonScene.MaterialsList.Add(babylonMaterial);
}
}
else
{
// isMaterialExportable check should prevent this to happen
RaiseError("Unsupported material type: " + materialNode.MaterialClass, 2);
}
}
/// <summary>
/// Export dedicated to SpecGloss Material
/// </summary>
/// <param name="materialNode">the material node interface</param>
/// <param name="babylonScene">the scene to export the material</param>
private void ExportPbrSpecGlossMaterial(IIGameMaterial materialNode, BabylonScene babylonScene)
{
// build material decorator
PbrSpecGlossDecorator maxDecorator = new PbrSpecGlossDecorator(materialNode);
// get the custom babylon attribute decorator
BabylonCustomAttributeDecorator babylonDecorator = maxDecorator.BabylonCustomAttributes;
// the target material
var babylonMaterial = new BabylonPBRSpecularGlossinessMaterial(maxDecorator.Id)
{
maxGameMaterial = materialNode,
name = maxDecorator.Name,
backFaceCulling = babylonDecorator.BackFaceCulling,
doubleSided = !babylonDecorator.BackFaceCulling,
separateCullingPass = babylonDecorator.SeparateCullingPass,
isUnlit = babylonDecorator.IsUnlit,
baseColor = maxDecorator.BaseColor.ToArray(),
};
// --- Global ---
if (babylonMaterial.isUnlit)
{
// Ignore values
babylonMaterial.specularColor = BabylonPBRBaseSimpleMaterial.BlackColor();
babylonMaterial.glossiness = 0;
}
else
{
babylonMaterial.glossiness = maxDecorator.Glossiness;
babylonMaterial.specularColor = maxDecorator.SpecularColor.ToArray();
babylonMaterial.emissive = maxDecorator.EmitColor.ToArray();
}
// --- Textures ---
float[] multiplyColor = null;
if (exportParameters.exportTextures)
{
ITexmap diffuseTexMap = maxDecorator.BaseColorMap;
ITexmap alphaTexMap = maxDecorator.OpacityMap;
bool isOpacity = true;
babylonMaterial.diffuseTexture = ExportBaseColorAlphaTexture(diffuseTexMap, alphaTexMap, babylonMaterial.baseColor, babylonMaterial.alpha, babylonScene, out multiplyColor, isOpacity);
if (multiplyColor != null)
{
babylonMaterial.baseColor = multiplyColor;
}
if (!babylonMaterial.isUnlit)
{
// Metallic, roughness, ambient occlusion
ITexmap specularTexMap = maxDecorator.SpecularMap;
ITexmap glossinessTexMap = maxDecorator.GlossinessMap;
ITexmap ambientOcclusionTexMap = maxDecorator.AmbientOcclusionMap;
if (specularTexMap != null || glossinessTexMap != null)
{
// Merge Specular and Glossiness
RaiseVerbose("Merge Specular and Glossiness", 2);
BabylonTexture specularGlossinessTexture = ExportSpecularGlossinessTexture(babylonMaterial.specularColor, specularTexMap, babylonMaterial.glossiness, glossinessTexMap, babylonScene);
babylonMaterial.specularGlossinessTexture = specularGlossinessTexture;
}
if (ambientOcclusionTexMap != null)
{
// Simply export occlusion texture
RaiseVerbose("Export occlusion texture", 2);
babylonMaterial.occlusionTexture = ExportTexture(ambientOcclusionTexMap, babylonScene);
}
var normalMapAmount = maxDecorator.BumpMapAmount;
ITexmap normalTexMap = maxDecorator.NormalMap;
babylonMaterial.normalTexture = ExportTexture(normalTexMap, babylonScene, normalMapAmount);
ITexmap emitTexMap = maxDecorator.EmitColormMap;
babylonMaterial.emissiveTexture = ExportTexture(emitTexMap, babylonScene);
if (babylonMaterial.specularGlossinessTexture != null && !babylonDecorator.UseMaxFactor)
{
babylonMaterial.glossiness = glossinessTexMap != null ? 1.0f : 0.0f;
babylonMaterial.specularColor = specularTexMap != null?BabylonPBRBaseSimpleMaterial.WhiteColor() : BabylonPBRBaseSimpleMaterial.BlackColor();
}
}
}
// --- Finalize ---
if (babylonMaterial.alpha != 1.0f || (babylonMaterial.diffuseTexture != null && babylonMaterial.diffuseTexture.hasAlpha))
{
babylonMaterial.transparencyMode = (int)BabylonMaterial.TransparencyMode.ALPHABLEND;
}
if (babylonMaterial.transparencyMode == (int)BabylonMaterial.TransparencyMode.ALPHATEST)
{
// Set the alphaCutOff value explicitely to avoid different interpretations on different engines
// Use the glTF default value rather than the babylon one
babylonMaterial.alphaCutOff = 0.5f;
}
if (babylonMaterial.emissiveTexture != null)
{
babylonMaterial.emissive = new[] { 1.0f, 1.0f, 1.0f };
}
// List all babylon material attributes
// Those attributes are currently stored into the native material
// They should not be exported as extra attributes
var doNotExport = BabylonCustomAttributeDecorator.ListPrivatePropertyNames().ToList();
// Export the custom attributes of this material
babylonMaterial.metadata = ExportExtraAttributes(materialNode, babylonScene, doNotExport);
if (exportParameters.pbrFull)
{
var fullPBR = new BabylonPBRMaterial(babylonMaterial)
{
directIntensity = babylonDecorator.DirectIntensity,
emissiveIntensity = babylonDecorator.EmissiveIntensity,
environmentIntensity = babylonDecorator.EnvironementIntensity,
specularIntensity = babylonDecorator.SpecularIntensity,
maxGameMaterial = babylonMaterial.maxGameMaterial
};
babylonScene.MaterialsList.Add(fullPBR);
}
else
{
// Add the material to the scene
babylonScene.MaterialsList.Add(babylonMaterial);
}
}
/// <summary>
/// Export dedicated to PbrMetalRough Material
/// </summary>
/// <param name="materialNode">the material node interface</param>
/// <param name="babylonScene">the scene to export the material</param>
private void ExportPbrMetalRoughMaterial(IIGameMaterial materialNode, BabylonScene babylonScene)
{
// build material decorator
PbrMetalRoughDecorator maxDecorator = new PbrMetalRoughDecorator(materialNode);
// get the custom babylon attribute decorator
BabylonCustomAttributeDecorator babylonDecorator = maxDecorator.BabylonCustomAttributes;
// the target material
var babylonMaterial = new BabylonPBRMetallicRoughnessMaterial(maxDecorator.Id)
{
maxGameMaterial = materialNode,
name = maxDecorator.Name,
backFaceCulling = babylonDecorator.BackFaceCulling,
doubleSided = !babylonDecorator.BackFaceCulling,
separateCullingPass = babylonDecorator.SeparateCullingPass,
isUnlit = babylonDecorator.IsUnlit,
_unlit = babylonDecorator.IsUnlit,
baseColor = maxDecorator.BaseColor.ToArray()
};
// --- Global ---
if (babylonMaterial.isUnlit)
{
// Ignore values
babylonMaterial.metallic = 0;
babylonMaterial.roughness = 0.9f;
}
else
{
babylonMaterial.metallic = maxDecorator.Metalness;
babylonMaterial.roughness = maxDecorator.Roughness;
babylonMaterial.emissive = maxDecorator.EmitColor.ToArray();
}
// --- Textures ---
float[] multiplyColor = null;
if (exportParameters.exportTextures)
{
ITexmap baseColorTexMap = maxDecorator.BaseColorMap;
ITexmap alphaTexMap = maxDecorator.OpacityMap;
bool isOpacity = true;
babylonMaterial.baseTexture = ExportBaseColorAlphaTexture(baseColorTexMap, alphaTexMap, babylonMaterial.baseColor, babylonMaterial.alpha, babylonScene, out multiplyColor, isOpacity);
if (multiplyColor != null)
{
babylonMaterial.baseColor = multiplyColor;
}
if (!babylonMaterial.isUnlit)
{
// Metallic, roughness, ambient occlusion
ITexmap metalnessTexMap = maxDecorator.MetalnessMap;
ITexmap roughnessTexMap = maxDecorator.RoughnessMap;
ITexmap ambientOcclusionTexMap = maxDecorator.AmbientOcclusionMap;
// Check if MR or ORM textures are already merged
bool areTexturesAlreadyMerged = false;
if (metalnessTexMap != null && roughnessTexMap != null)
{
string sourcePathMetallic = getSourcePath(metalnessTexMap);
string sourcePathRoughness = getSourcePath(roughnessTexMap);
if (sourcePathMetallic == sourcePathRoughness)
{
if (ambientOcclusionTexMap != null && exportParameters.mergeAO)
{
string sourcePathAmbientOcclusion = getSourcePath(ambientOcclusionTexMap);
if (sourcePathMetallic == sourcePathAmbientOcclusion)
{
// Metallic, roughness and ambient occlusion are already merged
RaiseVerbose("Metallic, roughness and ambient occlusion are already merged", 2);
BabylonTexture ormTexture = ExportTexture(metalnessTexMap, babylonScene);
babylonMaterial.metallicRoughnessTexture = ormTexture;
babylonMaterial.occlusionTexture = ormTexture;
areTexturesAlreadyMerged = true;
}
}
else
{
// Metallic and roughness are already merged
RaiseVerbose("Metallic and roughness are already merged", 2);
BabylonTexture ormTexture = ExportTexture(metalnessTexMap, babylonScene);
babylonMaterial.metallicRoughnessTexture = ormTexture;
areTexturesAlreadyMerged = true;
}
}
}
if (areTexturesAlreadyMerged == false)
{
if (metalnessTexMap != null || roughnessTexMap != null)
{
// Merge metallic, roughness and ambient occlusion
RaiseVerbose("Merge metallic and roughness (and ambient occlusion if `mergeAOwithMR` is enabled)", 2);
BabylonTexture ormTexture = ExportORMTexture(exportParameters.mergeAO ? ambientOcclusionTexMap : null, roughnessTexMap, metalnessTexMap, babylonMaterial.metallic, babylonMaterial.roughness, babylonScene, false);
babylonMaterial.metallicRoughnessTexture = ormTexture;
if (ambientOcclusionTexMap != null)
{
if (exportParameters.mergeAO)
{
// if the ambient occlusion texture map uses a different set of texture coordinates than
// metallic roughness, create a new instance of the ORM BabylonTexture with the different texture
// coordinate indices
var ambientOcclusionTexture = _getBitmapTex(ambientOcclusionTexMap);
var texCoordIndex = ambientOcclusionTexture.UVGen.MapChannel - 1;
if (texCoordIndex != ormTexture.coordinatesIndex)
{
babylonMaterial.occlusionTexture = new BabylonTexture(ormTexture);
babylonMaterial.occlusionTexture.coordinatesIndex = texCoordIndex;
// Set UVs/texture transform for the ambient occlusion texture
var uvGen = _exportUV(ambientOcclusionTexture.UVGen, babylonMaterial.occlusionTexture);
}
else
{
babylonMaterial.occlusionTexture = ormTexture;
}
}
else
{
babylonMaterial.occlusionTexture = ExportTexture(ambientOcclusionTexMap, babylonScene);
}
}
}
else if (ambientOcclusionTexMap != null)
{
// Simply export occlusion texture
RaiseVerbose("Simply export occlusion texture", 2);
babylonMaterial.occlusionTexture = ExportTexture(ambientOcclusionTexMap, babylonScene);
}
}
if (ambientOcclusionTexMap != null && !exportParameters.mergeAO && babylonMaterial.occlusionTexture == null)
{
RaiseVerbose("Exporting occlusion texture without merging with metallic roughness", 2);
babylonMaterial.occlusionTexture = ExportTexture(ambientOcclusionTexMap, babylonScene);
}
var normalMapAmount = maxDecorator.BumpMapAmount;
ITexmap normalTexMap = maxDecorator.NormalMap;
babylonMaterial.normalTexture = ExportTexture(normalTexMap, babylonScene, normalMapAmount);
ITexmap emitTexMap = maxDecorator.EmitColormMap;
babylonMaterial.emissiveTexture = ExportTexture(emitTexMap, babylonScene);
if (babylonMaterial.metallicRoughnessTexture != null && !babylonDecorator.UseMaxFactor)
{
// Change the factor to zero if combining partial channel to avoid issue (in case of image compression).
// ie - if no metallic map, then b MUST be fully black. However channel of jpeg MAY not beeing fully black
// cause of the compression algorithm. Keeping MetallicFactor to 1 will make visible artifact onto texture. So set to Zero instead.
babylonMaterial.metallic = areTexturesAlreadyMerged || metalnessTexMap != null ? 1.0f : 0.0f;
babylonMaterial.roughness = areTexturesAlreadyMerged || roughnessTexMap != null ? 1.0f : 0.0f;
}
}
}
if (babylonMaterial.alpha != 1.0f || (babylonMaterial.baseTexture != null && babylonMaterial.baseTexture.hasAlpha))
{
babylonMaterial.transparencyMode = (int)BabylonMaterial.TransparencyMode.ALPHABLEND;
}
if (babylonMaterial.transparencyMode == (int)BabylonMaterial.TransparencyMode.ALPHATEST)
{
// Set the alphaCutOff value explicitely to avoid different interpretations on different engines
// Use the glTF default value rather than the babylon one
babylonMaterial.alphaCutOff = 0.5f;
}
if (babylonMaterial.emissiveTexture != null)
{
babylonMaterial.emissive = new[] { 1.0f, 1.0f, 1.0f };
}
// Add babylon attributes
if (babylonDecorator.Properties == null)
{
AddPhysicalBabylonAttributes(materialNode.MaterialName, babylonMaterial);
}
// List all babylon material attributes
// Those attributes are currently stored into the native material
// They should not be exported as extra attributes
var doNotExport = BabylonCustomAttributeDecorator.ListPrivatePropertyNames().ToList();
// Export the custom attributes of this material
babylonMaterial.metadata = ExportExtraAttributes(materialNode, babylonScene, doNotExport);
if (exportParameters.pbrFull)
{
var fullPBR = new BabylonPBRMaterial(babylonMaterial)
{
directIntensity = babylonDecorator.DirectIntensity,
emissiveIntensity = babylonDecorator.EmissiveIntensity,
environmentIntensity = babylonDecorator.EnvironementIntensity,
specularIntensity = babylonDecorator.SpecularIntensity,
maxGameMaterial = babylonMaterial.maxGameMaterial
};
babylonScene.MaterialsList.Add(fullPBR);
}
else
{
// Add the material to the scene
babylonScene.MaterialsList.Add(babylonMaterial);
}
}
private void ConvertUnitySkyboxToBabylon(Camera camera, float progress)
{
// Skybox
bool png = (exportationOptions.DefaultImageFormat == (int)BabylonImageFormat.PNG);
string fext = (png == true) ? ".png" : ".jpg";
if ((camera.clearFlags & CameraClearFlags.Skybox) == CameraClearFlags.Skybox)
{
if (RenderSettings.skybox != null)
{
BabylonTexture skytex = null;
if (RenderSettings.skybox.shader.name == "Skybox/Cubemap")
{
var cubeMap = RenderSettings.skybox.GetTexture("_Tex") as Cubemap;
if (cubeMap != null)
{
var srcTexturePath = AssetDatabase.GetAssetPath(cubeMap);
if (srcTexturePath.EndsWith(".hdr", StringComparison.OrdinalIgnoreCase))
{
var hdr = new BabylonHDRCubeTexture();
hdr.size = cubeMap.width;
skytex = hdr;
CopyTextureCube(String.Format("{0}Skybox.hdr", SceneName), cubeMap, skytex, true);
}
else
{
skytex = new BabylonTexture();
CopyTextureCube(String.Format("{0}Skybox.hdr", SceneName), cubeMap, skytex, false);
if (png)
{
skytex.extensions = new string[] { "_px.png", "_py.png", "_pz.png", "_nx.png", "_ny.png", "_nz.png" }
}
;
}
}
}
else if (RenderSettings.skybox.shader.name == "Skybox/6 Sided")
{
var frontTexture = RenderSettings.skybox.GetTexture("_FrontTex") as Texture2D;
var backTexture = RenderSettings.skybox.GetTexture("_BackTex") as Texture2D;
var leftTexture = RenderSettings.skybox.GetTexture("_LeftTex") as Texture2D;
var rightTexture = RenderSettings.skybox.GetTexture("_RightTex") as Texture2D;
var upTexture = RenderSettings.skybox.GetTexture("_UpTex") as Texture2D;
var downTexture = RenderSettings.skybox.GetTexture("_DownTex") as Texture2D;
if (frontTexture != null && backTexture != null && leftTexture != null && rightTexture != null && upTexture != null && downTexture != null)
{
skytex = new BabylonTexture();
skytex.name = String.Format("{0}Skybox", SceneName);
var frontTextureName = String.Format("{0}_pz{1}", skytex.name, fext);
var frontTexturePath = Path.Combine(babylonScene.OutputPath, frontTextureName);
CopyTextureFace(frontTexturePath, frontTextureName, frontTexture);
var backTextureName = String.Format("{0}_nz{1}", skytex.name, fext);
var backTexturePath = Path.Combine(babylonScene.OutputPath, backTextureName);
CopyTextureFace(backTexturePath, backTextureName, backTexture);
var leftTextureName = String.Format("{0}_px{1}", skytex.name, fext);
var leftTexturePath = Path.Combine(babylonScene.OutputPath, leftTextureName);
CopyTextureFace(leftTexturePath, leftTextureName, leftTexture);
var rightTextureName = String.Format("{0}_nx{1}", skytex.name, fext);
var rightTexturePath = Path.Combine(babylonScene.OutputPath, rightTextureName);
CopyTextureFace(rightTexturePath, rightTextureName, rightTexture);
var upTextureName = String.Format("{0}_py{1}", skytex.name, fext);
var upTexturePath = Path.Combine(babylonScene.OutputPath, upTextureName);
CopyTextureFace(upTexturePath, upTextureName, upTexture);
var downTextureName = String.Format("{0}_ny{1}", skytex.name, fext);
var downTexturePath = Path.Combine(babylonScene.OutputPath, downTextureName);
CopyTextureFace(downTexturePath, downTexturePath, downTexture);
if (png)
{
skytex.extensions = new string[] { "_px.png", "_py.png", "_pz.png", "_nx.png", "_ny.png", "_nz.png" }
}
;
}
}
if (skytex != null)
{
skytex.isCube = true;
skytex.coordinatesMode = 5;
skytex.level = (SceneController != null) ? SceneController.skyboxOptions.lightIntensity : 1.0f;
var skybox = new BabylonMesh();
skybox.name = "sceneSkyboxMesh";
skybox.id = Guid.NewGuid().ToString();
skybox.indices = new[] { 0, 1, 2, 0, 2, 3, 4, 5, 6, 4, 6, 7, 8, 9, 10, 8, 10, 11, 12, 13, 14, 12, 14, 15, 16, 17, 18, 16, 18, 19, 20, 21, 22, 20, 22, 23 };
skybox.positions = new[] { 50.0f, -50.0f, 50.0f, -50.0f, -50.0f, 50.0f, -50.0f, 50.0f, 50.0f, 50.0f, 50.0f, 50.0f, 50.0f, 50.0f, -50.0f, -50.0f, 50.0f, -50.0f, -50.0f, -50.0f, -50.0f, 50.0f, -50.0f, -50.0f, 50.0f, 50.0f, -50.0f, 50.0f, -50.0f, -50.0f, 50.0f, -50.0f, 50.0f, 50.0f, 50.0f, 50.0f, -50.0f, 50.0f, 50.0f, -50.0f, -50.0f, 50.0f, -50.0f, -50.0f, -50.0f, -50.0f, 50.0f, -50.0f, -50.0f, 50.0f, 50.0f, -50.0f, 50.0f, -50.0f, 50.0f, 50.0f, -50.0f, 50.0f, 50.0f, 50.0f, 50.0f, -50.0f, 50.0f, 50.0f, -50.0f, -50.0f, -50.0f, -50.0f, -50.0f, -50.0f, -50.0f, 50.0f };
skybox.uvs = new[] { 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f };
skybox.normals = new[] { 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, -1.0f, 0, 0f };
if (SceneController != null)
{
Color skycolor = SceneController.skyboxOptions.albedoColor;
Color skyreflect = SceneController.skyboxOptions.reflectivityColor;
var skyboxMaterial = new BabylonPBRMaterial()
{
name = "sceneSkyboxMaterial",
id = Guid.NewGuid().ToString(),
albedo = skycolor.ToFloat(),
reflectivity = skyreflect.ToFloat(),
microSurface = SceneController.skyboxOptions.microSurface,
cameraContrast = SceneController.skyboxOptions.cameraContrast,
cameraExposure = SceneController.skyboxOptions.cameraExposure,
directIntensity = SceneController.skyboxOptions.directIntensity,
emissiveIntensity = SceneController.skyboxOptions.emissiveIntensity,
specularIntensity = SceneController.skyboxOptions.specularIntensity,
environmentIntensity = SceneController.skyboxOptions.environmentIntensity
};
skyboxMaterial.reflectionTexture = skytex;
skyboxMaterial.backFaceCulling = false;
skyboxMaterial.disableLighting = true;
skybox.materialId = skyboxMaterial.id;
skybox.infiniteDistance = true;
babylonScene.MeshesList.Add(skybox);
babylonScene.MaterialsList.Add(skyboxMaterial);
babylonScene.AddTextureCube("sceneSkyboxMaterial");
}
}
}
}
}
}
}
