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  • [编辑器]Unity批量处理图片

    加载图片,将其画在一张RenderTexture中,再新建一张Texture2D,从rt中读出来处理过的数据,再存进原路径中,

    比如要将所有图片扩大1.5倍:

    public static void ChangeSize(params string[] paths)
        {
            var texture2Ds = AssetDatabase.FindAssets ("t:Texture2D", paths);
            var retTexture = new Texture2D (1, 1, TextureFormat.ARGB32, false);
            int count = textures.Length;
            for(int i = 0; i < count; ++i)
            {
                var path = AssetDatabase.GUIDToAssetPath (textures[i]);
                var texture = AssetDatabase.LoadAssetAtPath<Texture2D> (path);
                var rt = RenderTexture.GetTemporary ((int)(texture.width * 1.5f), (int)(texture.height * 1.5f), 0, RenderTextureFormat.ARGB32);
                texture.DiscardContents ();
                Graphics.Blit (texture, rt);
                RenderTexture.active = texture;
                retTexture.Resize (rt.width, rt.height);
                retTexture.ReadPixels (new Rect (0, 0, rt.width, rt.height), 0, 0);
                retTexture.Apply ();
                File.WriteAllBytes (path, retTexture.EncodeToPNG ());
                RenderTexture.ReleaseTemporary (rt);
            }
            AssetDatabase.SaveAssets ();
            AssetDatabase.Refresh ();
        }

    为防止重复编辑,可以在userdata中添加标志:

    var im = AssetImporter.GetAtPath (path);
    if (im.userData.Contains ("R2;"))
        continue;
    im.userData += "R2;";
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  • 原文地址:https://www.cnblogs.com/drashnane/p/6664435.html
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