private void OnGUI()
{
EditorGUILayout.LabelField("General Settings", EditorStyles.boldLabel);
EditorGUILayout.Space();
materialPrefix = EditorGUILayout.TextField("Material Prefix", materialPrefix);
materialSuffix = EditorGUILayout.TextField("Material Suffix", materialSuffix);
baseMaterial = EditorGUILayout.ObjectField("Template Material", baseMaterial, typeof(Material), false) as Material;
shader = EditorGUILayout.ObjectField("Shader Override", shader, typeof(Shader), false) as Shader;
EditorGUILayout.BeginHorizontal();
EditorGUILayout.LabelField("Overwrite existing materials?");
overrideExistingMaterials = EditorGUILayout.Toggle(overrideExistingMaterials);
EditorGUILayout.EndHorizontal();
EditorGUILayout.Space();
EditorGUILayout.LabelField("Albedo texture \"Alpha is Transparency\" Settings", EditorStyles.boldLabel);
EditorGUILayout.Space();
overrideAlphaIsTransparency = EditorGUILayout.BeginToggleGroup("Override alphaIsTransparency", overrideAlphaIsTransparency);
alphaIsTransparencyNew = EditorGUILayout.Toggle("alphaIsTransparency new value", alphaIsTransparencyNew);
EditorGUILayout.EndToggleGroup();
EditorGUILayout.Space();
EditorGUILayout.LabelField("Material Albedo Map Settings", EditorStyles.boldLabel);
EditorGUILayout.Space();
overrideTexturePropertyName = EditorGUILayout.BeginToggleGroup("Use custom material albedo property", overrideTexturePropertyName);
materialTexturePropertyName = EditorGUILayout.TextField("Shader Texture Property Name", materialTexturePropertyName);
EditorGUILayout.EndToggleGroup();
EditorGUILayout.Space();
EditorGUILayout.LabelField("Material Normal Map Settings", EditorStyles.boldLabel);
EditorGUILayout.Space();
includeNormalMap = EditorGUILayout.BeginToggleGroup("Include normal maps (need to end with \"_n\" or \"_normal\")", includeNormalMap);
// Normal maps need to start with the regular texture name and end with "_n" or "_normal" to qualify as normal maps
// The normal maps will also automatically have their import settings changed to normal maps if necessary
// According to the documentation at https://docs.unity3d.com/ScriptReference/Material.SetTexture.html the default name
// property for normal maps in Unity's built in shaders is "_BumpMap" (and "_MainTex" for the main texture/albedo)
overrideNormalMapPropertyName = EditorGUILayout.BeginToggleGroup("Use custom material normal map property", overrideNormalMapPropertyName);
normalMapPropertyName = EditorGUILayout.TextField("Normal Map Property", normalMapPropertyName);
EditorGUILayout.EndToggleGroup();
EditorGUILayout.EndToggleGroup();
EditorGUILayout.Space();
EditorGUILayout.LabelField("Folder Selection", EditorStyles.boldLabel);
EditorGUILayout.Space();
EditorGUILayout.LabelField(string.Format("Input folder: {0}", (!string.IsNullOrEmpty(textureSrcFolderPath) ? textureSrcFolderPath : "[not assigned]")));
EditorGUILayout.LabelField(string.Format("Output folder: {0}", (!string.IsNullOrEmpty(outputFolderPath) ? outputFolderPath : "[not assigned]")));
if (GUILayout.Button("Use folder of selected asset as input"))
{
EditorHelpUtilities.AssignFolderOfSelectedObject(ref textureSrcFolderPath);
}
if (GUILayout.Button("Use folder of selected asset as output"))
{
EditorHelpUtilities.AssignFolderOfSelectedObject(ref outputFolderPath);
}
if (GUILayout.Button("Select Texture Input Folder"))
{
string folderPathTemp = null;
if (EditorHelpUtilities.TryGetFolderSelection(out folderPathTemp, "Select folder with Textures"))
{
textureSrcFolderPath = folderPathTemp;
}
}
if (GUILayout.Button("Select Material Output Folder"))
{
string folderPathTemp = null;
if (EditorHelpUtilities.TryGetFolderSelection(out folderPathTemp, "Select folder to store Materials to"))
{
outputFolderPath = folderPathTemp;
}
}
EditorGUILayout.Space();
EditorGUILayout.LabelField("Asset Generation", EditorStyles.boldLabel);
if (GUILayout.Button("Create Materials"))
{
CreateMaterials();
}
}
private string GetSanitizedMaterialFileName(string textureName)
{
return(EditorHelpUtilities.GetSanetizedFileName(materialPrefix).Replace("/", "") + textureName + EditorHelpUtilities.GetSanetizedFileName(materialSuffix).Replace("/", "") + ".mat");
}
private void BuildMaterialsWithNormalMaps(string[] assetGUIDs, Material materialTemplate, string outputPathAssetsRelativeTrimmed)
{
// Assume a list size of half the assetGUIDs length, but add a small buffer in case not all textures have proper normals for them
List <MapSet> textureSets = new List <MapSet>((assetGUIDs.Length + 2) / 2);
List <AssetNameDetails> assetNameDetails = new List <AssetNameDetails>(assetGUIDs.Length);
bool wereTextureImportSettingsEdited = false;
foreach (string guid in assetGUIDs)
{
string assetPath = AssetDatabase.GUIDToAssetPath(guid);
string assetName = EditorHelpUtilities.GetAssetNameFromPath(assetPath);
string assetNameLowerCase = assetName.ToLower();
int assetNameLastDotIndex = assetName.LastIndexOf('.');
string assetNameNoFileTypeLowerCase = assetNameLowerCase.Substring(0, assetNameLastDotIndex);
AssetNameDetails nameDetails = new AssetNameDetails(assetPath, assetName, assetNameLowerCase, assetNameNoFileTypeLowerCase);
assetNameDetails.Add(nameDetails);
}
foreach (AssetNameDetails nameDetails in assetNameDetails)
{
bool isNormalMap = false;
foreach (string normalSuffix in normalMapSuffixes)
{
if (nameDetails.AssetNameNoFileTypeLowerCase.EndsWith(normalSuffix))
{
// Found normal map, continue search for albedo maps only
isNormalMap = true;
continue;
}
}
if (isNormalMap)
{
continue;
}
Texture2D albedoTexture = AssetDatabase.LoadAssetAtPath(nameDetails.AssetPath, typeof(Texture2D)) as Texture2D;
if (albedoTexture == null)
{
continue;
}
if (overrideAlphaIsTransparency)
{
albedoTexture.alphaIsTransparency = alphaIsTransparencyNew;
TextureImporter textureImporter = AssetImporter.GetAtPath(nameDetails.AssetPath) as TextureImporter;
if (textureImporter.alphaIsTransparency != alphaIsTransparencyNew)
{
wereTextureImportSettingsEdited = true;
textureImporter.alphaIsTransparency = alphaIsTransparencyNew;
}
}
Texture2D normalTexture = null;
string normalMapAssetPath = FindNormalMapAssetPathForTextureName(assetNameDetails, nameDetails.AssetNameNoFileTypeLowerCase);
if (normalMapAssetPath != null)
{
TextureImporter normalTextureImporter = AssetImporter.GetAtPath(normalMapAssetPath) as TextureImporter;
if (normalTextureImporter.textureType != TextureImporterType.NormalMap)
{
normalTextureImporter.textureType = TextureImporterType.NormalMap;
wereTextureImportSettingsEdited = true;
}
normalTexture = AssetDatabase.LoadAssetAtPath(normalMapAssetPath, typeof(Texture2D)) as Texture2D;
}
MapSet textureCombination = new MapSet(albedoTexture, normalTexture, nameDetails.AssetPath);
textureSets.Add(textureCombination);
}
// Apply the changes to the normal map texture settings to the project, if there were any:
if (wereTextureImportSettingsEdited)
{
AssetDatabase.SaveAssets();
AssetDatabase.Refresh();
}
foreach (MapSet textureSet in textureSets)
{
try
{
Material currentMaterial = new Material(baseMaterial); // copies all properties
SetAlbedoMapInMaterial(currentMaterial, textureSet.AlbedoMap);
SetNormalMapInMaterial(currentMaterial, textureSet.NormalMap);
string textureName = textureSet.AlbedoMap.name;
string fileName = GetSanitizedMaterialFileName(textureName);
string fullSavePath = outputPathAssetsRelativeTrimmed + "/" + fileName;
if (!overrideExistingMaterials && !string.IsNullOrEmpty(AssetDatabase.AssetPathToGUID(fullSavePath)))
{
// if we don't allow material overwriting and there is an asset at our path (AssetDatabase.AssetPathToGUID not returning null)
// just omit the asset creation
Destroy(currentMaterial);
continue;
}
// CreateAsset remark: If an asset already exists at path it will be deleted prior to creating a new asset.
AssetDatabase.CreateAsset(currentMaterial, fullSavePath);
}
catch (System.Exception e)
{
Debug.LogError(string.Format("Something has gone wrong while processing texture set with albedo map at path {0}: {1}", textureSet.AlbedoMapAssetPath, e));
}
}
}
private void CreateMaterials()
{
// Information for using Directory.Exists:
// The path parameter is permitted to specify relative or absolute path information. Relative path information is interpreted as relative to the current working directory.
Debug.Log(string.Format("CreateMaterials: InputFolder Path passed {0}, output folder path {1}", textureSrcFolderPath, outputFolderPath));
if (!Directory.Exists(textureSrcFolderPath))
{
EditorHelpUtilities.DisplaySimpleDialog("Invalid folder", string.Format("Input folder path {0} is not valid", textureSrcFolderPath));
return;
}
if (!Directory.Exists(outputFolderPath))
{
EditorHelpUtilities.DisplaySimpleDialog("Invalid folder", string.Format("Output folder path {0} is not valid", outputFolderPath));
return;
}
string inputFolderAssetsRelative = null;
if (!EditorHelpUtilities.TryGetAssetsLocalPathForExistingFolder(textureSrcFolderPath, out inputFolderAssetsRelative))
{
EditorHelpUtilities.DisplaySimpleDialog("Invalid folder", string.Format("Input folder path {0} exists but was found to not belong into this project", textureSrcFolderPath));
return;
}
string outputFolderAssetsRelative = null;
if (!EditorHelpUtilities.TryGetAssetsLocalPathForExistingFolder(outputFolderPath, out outputFolderAssetsRelative))
{
EditorHelpUtilities.DisplaySimpleDialog("Invalid folder", string.Format("Input folder path {0} exists but was found to not belong into this project", outputFolderPath));
return;
}
var baseMaterialPrev = baseMaterial;
var shaderPrev = shader;
if (baseMaterial == null)
{
Shader initShader = shader != null ? shader : Shader.Find("Standard");
baseMaterial = new Material(initShader);
}
else if (shader != null)
{
baseMaterial.shader = shader;
}
Debug.Log(string.Format("Output folder path: {0}", outputFolderPath));
string outputPathAssetsRelativeTrimmed = outputFolderAssetsRelative.TrimEnd('/').TrimEnd('\\');
string[] assetGUIDs = AssetDatabase.FindAssets("t:texture2D", new string[] { inputFolderAssetsRelative });
if (includeNormalMap)
{
BuildMaterialsWithNormalMaps(assetGUIDs, baseMaterial, outputPathAssetsRelativeTrimmed);
}
else
{
BuildMaterialsWithoutNormalMaps(assetGUIDs, baseMaterial, outputPathAssetsRelativeTrimmed);
}
shader = shaderPrev;
// If we created a material only for this purpose, destroy it again
if (baseMaterial != null && baseMaterialPrev == null)
{
GameObject.DestroyImmediate(baseMaterial);
}
baseMaterial = baseMaterialPrev;
// Save new alphaIsTransparency setting for asset loaders if neccessary
AssetDatabase.SaveAssets();
AssetDatabase.Refresh();
}