判断资源贴图是否有alpha

最新推荐文章于 2022-03-11 11:42:40 发布

weixin_34363171

最新推荐文章于 2022-03-11 11:42:40 发布

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文章标签： python

本文介绍了一个Unity编辑器脚本，该脚本可以自动调整选定的Texture2D资源的最大尺寸和导入格式。根据纹理是否有Alpha通道及其宽高比，脚本会相应地调整纹理的大小和压缩格式。

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/*
  modfly selected textures`s maxSize and ImportFormat
  bool hasAlpha = true;
  if(hasAlpha)then(texture.size/2 and trueColor)else(16bit)

  2014.05.27
*/

using UnityEngine;
using System.Collections;
using UnityEditor;
public class modflyTextures : ScriptableObject{

    [MenuItem ("Custom/modflyTextures")]
    static void processTexture_Auto() { 
        processTexture();
    }

    static void processTexture() { 
        
        Object[] textures = GetSelectedTextures(); 
        Selection.objects = new Object[0];
        foreach (Texture2D tex in textures)  {
            string path = AssetDatabase.GetAssetPath(tex); 
            TextureImporter importerTexture = AssetImporter.GetAtPath(path) as TextureImporter; 

            if(importerTexture.DoesSourceTextureHaveAlpha() ==  true){
                if(tex.width >= tex.height )
                    importerTexture.maxTextureSize = tex.width/2;
                else importerTexture.maxTextureSize = tex.height/2;
                
                importerTexture.textureFormat = TextureImporterFormat.AutomaticTruecolor;
            }else{
                if(tex.width >= tex.height )
                    importerTexture.maxTextureSize = tex.width;
                else importerTexture.maxTextureSize = tex.height;

                importerTexture.textureFormat = TextureImporterFormat.AutomaticCompressed;
            }
            AssetDatabase.ImportAsset(path); 
        }
    }

    static Object[] GetSelectedTextures() 
    { 
        return Selection.GetFiltered(typeof(Texture2D), SelectionMode.DeepAssets); 
    }
}