Unity3D设置纹理格式 （待续）



Unity3D设置纹理格式

分类： Unity3D 2015-01-22 11:59 3495人阅读 评论(0)收藏 举报

目录(?)[+]

1. 简介
2. Unity3D默认纹理格式问题
   1. 1 在导入时是否自动压缩
   2. 2 Unity3D设置纹理格式
   3. 3 在Unity3D中自定义设置纹理格式

1. 简介

    在PC上开发时，其天空盒的效果很好，但是为Android平台Build之后，其效果简直没法看。

    更为恼火的是，之后PC上的纹理效果也变差了，新加入的纹理效果都会变差，看其纹理格式，使用ETC进行了压缩。

2. Unity3D默认纹理格式问题

2.1 在导入时是否自动压缩

     Edit->Preferences...

 

当选择此选项之后，每当导入新的纹理（无论是拖入或在文件管理器中copy），Unity3D都会根据当前平台的设置进行自动转换，此纹理转换，并不是把纹理文件进行修改，纹理文件是不动的，而是增加了一个.meta文件（如Sunny4_back.tif对应Sunny4_back.tif.meta），其中定义了很多与纹理相关的参数，其中决定此纹理格式的参数为：textureType，此文件内容如下：

[javascript] view plaincopyprint?

1. fileFormatVersion: 2  
2. guid: e658bdd655d56c64eb2bf011d186cded  
3. TextureImporter:  
4.   serializedVersion: 2  
5.   mipmaps:  
6.     mipMapMode: 0  
7.     enableMipMap: 1  
8.     linearTexture: 0  
9.     correctGamma: 0  
10.     fadeOut: 0  
11.     borderMipMap: 0  
12.     mipMapFadeDistanceStart: 1  
13.     mipMapFadeDistanceEnd: 3  
14.   bumpmap:  
15.     convertToNormalMap: 0  
16.     externalNormalMap: 0  
17.     heightScale: .25  
18.     normalMapFilter: 0  
19.   isReadable: 0  
20.   grayScaleToAlpha: 0  
21.   generateCubemap: 0  
22.   seamlessCubemap: 0  
23.   textureFormat: 4  
24.   maxTextureSize: 1024  
25.   textureSettings:  
26.     filterMode: -1  
27.     aniso: -1  
28.     mipBias: -1  
29.     wrapMode: -1  
30.   nPOTScale: 1  
31.   lightmap: 0  
32.   compressionQuality: 50  
33.   spriteMode: 0  
34.   spriteExtrude: 1  
35.   spriteMeshType: 1  
36.   alignment: 0  
37.   spritePivot: {x: .5, y: .5}  
38.   spriteBorder: {x: 0, y: 0, z: 0, w: 0}  
39.   spritePixelsToUnits: 100  
40.   alphaIsTransparency: 0  
41.   textureType: -1  
42.   buildTargetSettings: []  
43.   spriteSheet:  
44.     sprites: []  
45.   spritePackingTag:   
46.   userData:   

fileFormatVersion: 2guid: e658bdd655d56c64eb2bf011d186cdedTextureImporter:  serializedVersion: 2  mipmaps:    mipMapMode: 0    enableMipMap: 1    linearTexture: 0    correctGamma: 0    fadeOut: 0    borderMipMap: 0    mipMapFadeDistanceStart: 1    mipMapFadeDistanceEnd: 3  bumpmap:    convertToNormalMap: 0    externalNormalMap: 0    heightScale: .25    normalMapFilter: 0  isReadable: 0  grayScaleToAlpha: 0  generateCubemap: 0  seamlessCubemap: 0  textureFormat: 4  maxTextureSize: 1024  textureSettings:    filterMode: -1    aniso: -1    mipBias: -1    wrapMode: -1  nPOTScale: 1  lightmap: 0  compressionQuality: 50  spriteMode: 0  spriteExtrude: 1  spriteMeshType: 1  alignment: 0  spritePivot: {x: .5, y: .5}  spriteBorder: {x: 0, y: 0, z: 0, w: 0}  spritePixelsToUnits: 100  alphaIsTransparency: 0  textureType: -1  buildTargetSettings: []  spriteSheet:    sprites: []  spritePackingTag:   userData: 

2.2 Unity3D设置纹理格式

    1) 选中纹理，纹理的Inspector窗口如下图所示：

上图显示的为Default设置，若Android平台没有单独设置， 则此纹理在Anroid平台采用默认设置，若Android平台单独设置了，则采用Android平台设置的格式。Unity3D只能设置三种纹理格式：Compressed、16bits、Truecolor，若要设置其它纹理格式，则Unity3D无能为力。

2.3 在Unity3D中自定义设置纹理格式

       把ChangeTextureImportSettings.cs放于Assets/Editor目录下，ChangeTextureImportSettings.cs内容如下：

[javascript] view plaincopyprint?

1. using UnityEngine;  
2.   
3. using UnityEditor;  
4.   
5.   
6.   
7. // /////////////////////////////////////////////////////////////////////////////////////////////////////////  
8. //  
9. // Batch Texture import settings modifier.  
10. //  
11. // Modifies all selected textures in the project window and applies the requested modification on the  
12.   
13. // textures. Idea was to have the same choices for multiple files as you would have if you open the  
14.   
15. // import settings of a single texture. Put this into Assets/Editor and once compiled by Unity you find  
16.   
17. // the new functionality in Custom -> Texture. Enjoy! :-)  
18.   
19. //  
20.   
21. // Based on the great work of benblo in this thread:  
22. // http://forum.unity3d.com/viewtopic.php?t=16079&start=0&postdays=0&postorder=asc&highlight=textureimporter  
23. //  
24. // Developed by Martin Schultz, Decane in August 2009  
25. // e-mail: [e-mail]  
26. //  
27. // Updated for Unity 3.0 by col000r in August 2010  
28. // http://col000r.blogspot.com  
29. //  
30. // /////////////////////////////////////////////////////////////////////////////////////////////////////////  
31.   
32. public class ChangeTextureImportSettingsUnity3 : ScriptableObject {  
33.       
34.       
35.       
36.     [MenuItem ("Custom/Texture/Change Texture Format/Auto Compressed")]  
37.       
38.     static void ChangeTextureFormat_AutoCompressed() {  
39.           
40.         SelectedChangeTextureFormatSettings(TextureImporterFormat.AutomaticCompressed);  
41.           
42.     }  
43.       
44.       
45.       
46.     [MenuItem ("Custom/Texture/Change Texture Format/Auto 16bit")]  
47.       
48.     static void ChangeTextureFormat_Auto16Bit() {  
49.           
50.         SelectedChangeTextureFormatSettings(TextureImporterFormat.Automatic16bit);  
51.           
52.     }  
53.       
54.       
55.       
56.     [MenuItem ("Custom/Texture/Change Texture Format/Auto Truecolor")]  
57.       
58.     static void ChangeTextureFormat_AutoTruecolor() {  
59.           
60.         SelectedChangeTextureFormatSettings(TextureImporterFormat.AutomaticTruecolor);  
61.           
62.     }  
63.       
64.       
65.       
66.     [MenuItem ("Custom/Texture/Change Texture Format/RGB Compressed DXT1")]  
67.       
68.     static void ChangeTextureFormat_RGB_DXT1() {  
69.           
70.         SelectedChangeTextureFormatSettings(TextureImporterFormat.DXT1);  
71.           
72.     }  
73.       
74.       
75.       
76.     [MenuItem ("Custom/Texture/Change Texture Format/RGB Compressed DXT5")]  
77.       
78.     static void ChangeTextureFormat_RGB_DXT5() {  
79.           
80.         SelectedChangeTextureFormatSettings(TextureImporterFormat.DXT5);  
81.           
82.     }  
83.       
84.       
85.       
86.     [MenuItem ("Custom/Texture/Change Texture Format/RGB 16 bit")]  
87.       
88.     static void ChangeTextureFormat_RGB_16bit() {  
89.           
90.         SelectedChangeTextureFormatSettings(TextureImporterFormat.RGB16);  
91.           
92.     }  
93.       
94.       
95.       
96.     [MenuItem ("Custom/Texture/Change Texture Format/RGB 24 bit")]  
97.       
98.     static void ChangeTextureFormat_RGB_24bit() {  
99.           
100.         SelectedChangeTextureFormatSettings(TextureImporterFormat.RGB24);  
101.           
102.     }  
103.       
104.       
105.       
106.     [MenuItem ("Custom/Texture/Change Texture Format/Alpha 8 bit")]  
107.       
108.     static void ChangeTextureFormat_Alpha_8bit() {  
109.           
110.         SelectedChangeTextureFormatSettings(TextureImporterFormat.Alpha8);  
111.           
112.     }  
113.       
114.       
115.       
116.     [MenuItem ("Custom/Texture/Change Texture Format/ARGB 16 bit")]  
117.       
118.     static void ChangeTextureFormat_RGBA_16bit() {  
119.           
120.         SelectedChangeTextureFormatSettings(TextureImporterFormat.ARGB16);  
121.           
122.     }  
123.       
124.       
125.       
126.     [MenuItem ("Custom/Texture/Change Texture Format/RGBA 32 bit")]  
127.       
128.     static void ChangeTextureFormat_RGBA_32bit() {  
129.           
130.         SelectedChangeTextureFormatSettings(TextureImporterFormat.RGBA32);  
131.           
132.     }  
133.       
134.       
135.       
136.     [MenuItem ("Custom/Texture/Change Texture Format/ARGB 32 bit")]  
137.       
138.     static void ChangeTextureFormat_ARGB_32bit() {  
139.           
140.         SelectedChangeTextureFormatSettings(TextureImporterFormat.ARGB32);  
141.           
142.     }  
143.       
144.       
145.       
146.     [MenuItem ("Custom/Texture/Change Texture Format/RGB PVRTC 2bit")]  
147.       
148.     static void ChangeTextureFormat_RGB_PVRTC_2bit() {  
149.           
150.         SelectedChangeTextureFormatSettings(TextureImporterFormat.PVRTC_RGB2);  
151.           
152.     }  
153.       
154.       
155.       
156.     [MenuItem ("Custom/Texture/Change Texture Format/RGBA PVRTC 2bit")]  
157.       
158.     static void ChangeTextureFormat_RGBA_PVRTC_2bit() {  
159.           
160.         SelectedChangeTextureFormatSettings(TextureImporterFormat.PVRTC_RGBA2);  
161.           
162.     }      
163.       
164.       
165.       
166.     [MenuItem ("Custom/Texture/Change Texture Format/RGB PVRTC 4bit")]  
167.       
168.     static void ChangeTextureFormat_RGB_PVRTC_4bit() {  
169.           
170.         SelectedChangeTextureFormatSettings(TextureImporterFormat.PVRTC_RGB4);  
171.           
172.     }  
173.       
174.       
175.       
176.     [MenuItem ("Custom/Texture/Change Texture Format/RGBA PVRTC 4bit")]  
177.       
178.     static void ChangeTextureFormat_RGBA_PVRTC_4bit() {  
179.           
180.         SelectedChangeTextureFormatSettings(TextureImporterFormat.PVRTC_RGBA4);  
181.           
182.     }  
183.       
184.       
185.       
186.     // ----------------------------------------------------------------------------  
187.       
188.       
189.       
190.     [MenuItem ("Custom/Texture/Change Texture Size/Change Max Texture Size/32")]  
191.       
192.     static void ChangeTextureSize_32() {  
193.           
194.         SelectedChangeMaxTextureSize(32);  
195.           
196.     }  
197.       
198.       
199.       
200.     [MenuItem ("Custom/Texture/Change Texture Size/Change Max Texture Size/64")]  
201.       
202.     static void ChangeTextureSize_64() {  
203.           
204.         SelectedChangeMaxTextureSize(64);  
205.           
206.     }  
207.       
208.       
209.       
210.     [MenuItem ("Custom/Texture/Change Texture Size/Change Max Texture Size/128")]  
211.       
212.     static void ChangeTextureSize_128() {  
213.           
214.         SelectedChangeMaxTextureSize(128);  
215.           
216.     }  
217.       
218.       
219.       
220.     [MenuItem ("Custom/Texture/Change Texture Size/Change Max Texture Size/256")]  
221.       
222.     static void ChangeTextureSize_256() {  
223.           
224.         SelectedChangeMaxTextureSize(256);  
225.           
226.     }  
227.       
228.       
229.       
230.     [MenuItem ("Custom/Texture/Change Texture Size/Change Max Texture Size/512")]  
231.       
232.     static void ChangeTextureSize_512() {  
233.           
234.         SelectedChangeMaxTextureSize(512);  
235.           
236.     }  
237.       
238.       
239.       
240.     [MenuItem ("Custom/Texture/Change Texture Size/Change Max Texture Size/1024")]  
241.       
242.     static void ChangeTextureSize_1024() {  
243.           
244.         SelectedChangeMaxTextureSize(1024);  
245.           
246.     }  
247.       
248.       
249.       
250.     [MenuItem ("Custom/Texture/Change Texture Size/Change Max Texture Size/2048")]  
251.       
252.     static void ChangeTextureSize_2048() {  
253.           
254.         SelectedChangeMaxTextureSize(2048);  
255.           
256.     }  
257.       
258.       
259.       
260.     // ----------------------------------------------------------------------------  
261.       
262.       
263.       
264.     [MenuItem ("Custom/Texture/Change MipMap/Enable MipMap")]  
265.       
266.     static void ChangeMipMap_On() {  
267.           
268.         SelectedChangeMimMap(true);  
269.           
270.     }  
271.       
272.       
273.       
274.     [MenuItem ("Custom/Texture/Change MipMap/Disable MipMap")]  
275.       
276.     static void ChangeMipMap_Off() {  
277.           
278.         SelectedChangeMimMap(false);  
279.           
280.     }  
281.       
282.       
283.       
284.     // ----------------------------------------------------------------------------  
285.       
286.       
287.       
288.       
289.       
290.     [MenuItem ("Custom/Texture/Change Non Power of 2/None")]  
291.       
292.     static void ChangeNPOT_None() {  
293.           
294.         SelectedChangeNonPowerOf2(TextureImporterNPOTScale.None);  
295.           
296.     }  
297.       
298.       
299.       
300.     [MenuItem ("Custom/Texture/Change Non Power of 2/ToNearest")]  
301.       
302.     static void ChangeNPOT_ToNearest() {  
303.           
304.         SelectedChangeNonPowerOf2(TextureImporterNPOTScale.ToNearest);  
305.           
306.     }  
307.       
308.       
309.       
310.     [MenuItem ("Custom/Texture/Change Non Power of 2/ToLarger")]  
311.       
312.     static void ChangeNPOT_ToLarger() {  
313.           
314.         SelectedChangeNonPowerOf2(TextureImporterNPOTScale.ToLarger);  
315.           
316.     }  
317.       
318.       
319.       
320.     [MenuItem ("Custom/Texture/Change Non Power of 2/ToSmaller")]  
321.       
322.     static void ChangeNPOT_ToSmaller() {  
323.           
324.         SelectedChangeNonPowerOf2(TextureImporterNPOTScale.ToSmaller);  
325.           
326.     }      
327.       
328.       
329.       
330.     // ----------------------------------------------------------------------------  
331.       
332.       
333.       
334.     [MenuItem ("Custom/Texture/Change Is Readable/Enable")]  
335.       
336.     static void ChangeIsReadable_Yes() {  
337.           
338.         SelectedChangeIsReadable(true);  
339.           
340.     }  
341.       
342.       
343.       
344.     [MenuItem ("Custom/Texture/Change Is Readable/Disable")]  
345.       
346.     static void ChangeIsReadable_No() {  
347.           
348.         SelectedChangeIsReadable(false);  
349.           
350.     }    //Unity3D教程手册：www.unitymanual.com  
351.       
352.       
353.       
354.     // ----------------------------------------------------------------------------  
355.       
356.       
357.       
358.     static void SelectedChangeIsReadable(bool enabled) {  
359.           
360.           
361.           
362.         Object[] textures = GetSelectedTextures();  
363.           
364.         Selection.objects = new Object[0];  
365.           
366.         foreach (Texture2D texture in textures)  {  
367.               
368.             string path = AssetDatabase.GetAssetPath(texture);  
369.               
370.             TextureImporter textureImporter = AssetImporter.GetAtPath(path) as TextureImporter;  
371.               
372.             textureImporter.isReadable = enabled;      
373.               
374.             AssetDatabase.ImportAsset(path);  
375.               
376.         }  
377.           
378.     }  
379.       
380.       
381.       
382.       
383.       
384.     static void SelectedChangeNonPowerOf2(TextureImporterNPOTScale npot) {  
385.           
386.           
387.           
388.         Object[] textures = GetSelectedTextures();  
389.           
390.         Selection.objects = new Object[0];  
391.           
392.         foreach (Texture2D texture in textures)  {  
393.               
394.             string path = AssetDatabase.GetAssetPath(texture);  
395.               
396.             TextureImporter textureImporter = AssetImporter.GetAtPath(path) as TextureImporter;  
397.               
398.             textureImporter.npotScale = npot;      
399.               
400.             AssetDatabase.ImportAsset(path);  
401.               
402.         }  
403.           
404.     }  
405.       
406.       
407.       
408.     static void SelectedChangeMimMap(bool enabled) {  
409.           
410.           
411.           
412.         Object[] textures = GetSelectedTextures();  
413.           
414.         Selection.objects = new Object[0];  
415.           
416.         foreach (Texture2D texture in textures)  {  
417.               
418.             string path = AssetDatabase.GetAssetPath(texture);  
419.               
420.             TextureImporter textureImporter = AssetImporter.GetAtPath(path) as TextureImporter;  
421.               
422.             textureImporter.mipmapEnabled = enabled;      
423.               
424.             AssetDatabase.ImportAsset(path);  
425.               
426.         }  
427.           
428.     }  
429.       
430.     //Unity3D教程手册：www.unitymanual.com  
431.       
432.     static void SelectedChangeMaxTextureSize(int size) {  
433.           
434.           
435.           
436.         Object[] textures = GetSelectedTextures();  
437.           
438.         Selection.objects = new Object[0];  
439.           
440.         foreach (Texture2D texture in textures)  {  
441.               
442.             string path = AssetDatabase.GetAssetPath(texture);  
443.               
444.             TextureImporter textureImporter = AssetImporter.GetAtPath(path) as TextureImporter;  
445.               
446.             textureImporter.maxTextureSize = size;    
447.               
448.             AssetDatabase.ImportAsset(path);  
449.               
450.         }  
451.           
452.     }  
453.       
454.       
455.       
456.     static void SelectedChangeTextureFormatSettings(TextureImporterFormat newFormat) {  
457.           
458.           
459.           
460.         Object[] textures = GetSelectedTextures();  
461.           
462.         Selection.objects = new Object[0];  
463.           
464.         foreach (Texture2D texture in textures)  {  
465.               
466.             string path = AssetDatabase.GetAssetPath(texture);  
467.               
468.             //Debug.Log("path: " + path);  
469.               
470.             TextureImporter textureImporter = AssetImporter.GetAtPath(path) as TextureImporter;  
471.               
472.             textureImporter.textureFormat = newFormat;    
473.               
474.             AssetDatabase.ImportAsset(path);  
475.               
476.         }  
477.           
478.     }  
479.       
480.       
481.       
482.     static Object[] GetSelectedTextures()  
483.           
484.     {  
485.           
486.         return Selection.GetFiltered(typeof(Texture2D), SelectionMode.DeepAssets);  
487.           
488.     }  
489.       
490. }  

using UnityEngine;using UnityEditor;// ///////////////////////////////////////////////////////////////////////////////////////////////////////////// Batch Texture import settings modifier.//// Modifies all selected textures in the project window and applies the requested modification on the// textures. Idea was to have the same choices for multiple files as you would have if you open the// import settings of a single texture. Put this into Assets/Editor and once compiled by Unity you find// the new functionality in Custom -> Texture. Enjoy! :-)//// Based on the great work of benblo in this thread:// http://forum.unity3d.com/viewtopic.php?t=16079&start=0&postdays=0&postorder=asc&highlight=textureimporter//// Developed by Martin Schultz, Decane in August 2009// e-mail: [e-mail]//// Updated for Unity 3.0 by col000r in August 2010// http://col000r.blogspot.com//// /////////////////////////////////////////////////////////////////////////////////////////////////////////public class ChangeTextureImportSettingsUnity3 : ScriptableObject {[MenuItem ("Custom/Texture/Change Texture Format/Auto Compressed")]static void ChangeTextureFormat_AutoCompressed() {SelectedChangeTextureFormatSettings(TextureImporterFormat.AutomaticCompressed);}[MenuItem ("Custom/Texture/Change Texture Format/Auto 16bit")]static void ChangeTextureFormat_Auto16Bit() {SelectedChangeTextureFormatSettings(TextureImporterFormat.Automatic16bit);}[MenuItem ("Custom/Texture/Change Texture Format/Auto Truecolor")]static void ChangeTextureFormat_AutoTruecolor() {SelectedChangeTextureFormatSettings(TextureImporterFormat.AutomaticTruecolor);}[MenuItem ("Custom/Texture/Change Texture Format/RGB Compressed DXT1")]static void ChangeTextureFormat_RGB_DXT1() {SelectedChangeTextureFormatSettings(TextureImporterFormat.DXT1);}[MenuItem ("Custom/Texture/Change Texture Format/RGB Compressed DXT5")]static void ChangeTextureFormat_RGB_DXT5() {SelectedChangeTextureFormatSettings(TextureImporterFormat.DXT5);}[MenuItem ("Custom/Texture/Change Texture Format/RGB 16 bit")]static void ChangeTextureFormat_RGB_16bit() {SelectedChangeTextureFormatSettings(TextureImporterFormat.RGB16);}[MenuItem ("Custom/Texture/Change Texture Format/RGB 24 bit")]static void ChangeTextureFormat_RGB_24bit() {SelectedChangeTextureFormatSettings(TextureImporterFormat.RGB24);}[MenuItem ("Custom/Texture/Change Texture Format/Alpha 8 bit")]static void ChangeTextureFormat_Alpha_8bit() {SelectedChangeTextureFormatSettings(TextureImporterFormat.Alpha8);}[MenuItem ("Custom/Texture/Change Texture Format/ARGB 16 bit")]static void ChangeTextureFormat_RGBA_16bit() {SelectedChangeTextureFormatSettings(TextureImporterFormat.ARGB16);}[MenuItem ("Custom/Texture/Change Texture Format/RGBA 32 bit")]static void ChangeTextureFormat_RGBA_32bit() {SelectedChangeTextureFormatSettings(TextureImporterFormat.RGBA32);}[MenuItem ("Custom/Texture/Change Texture Format/ARGB 32 bit")]static void ChangeTextureFormat_ARGB_32bit() {SelectedChangeTextureFormatSettings(TextureImporterFormat.ARGB32);}[MenuItem ("Custom/Texture/Change Texture Format/RGB PVRTC 2bit")]static void ChangeTextureFormat_RGB_PVRTC_2bit() {SelectedChangeTextureFormatSettings(TextureImporterFormat.PVRTC_RGB2);}[MenuItem ("Custom/Texture/Change Texture Format/RGBA PVRTC 2bit")]static void ChangeTextureFormat_RGBA_PVRTC_2bit() {SelectedChangeTextureFormatSettings(TextureImporterFormat.PVRTC_RGBA2);}    [MenuItem ("Custom/Texture/Change Texture Format/RGB PVRTC 4bit")]static void ChangeTextureFormat_RGB_PVRTC_4bit() {SelectedChangeTextureFormatSettings(TextureImporterFormat.PVRTC_RGB4);}[MenuItem ("Custom/Texture/Change Texture Format/RGBA PVRTC 4bit")]static void ChangeTextureFormat_RGBA_PVRTC_4bit() {SelectedChangeTextureFormatSettings(TextureImporterFormat.PVRTC_RGBA4);}// ----------------------------------------------------------------------------[MenuItem ("Custom/Texture/Change Texture Size/Change Max Texture Size/32")]static void ChangeTextureSize_32() {SelectedChangeMaxTextureSize(32);}[MenuItem ("Custom/Texture/Change Texture Size/Change Max Texture Size/64")]static void ChangeTextureSize_64() {SelectedChangeMaxTextureSize(64);}[MenuItem ("Custom/Texture/Change Texture Size/Change Max Texture Size/128")]static void ChangeTextureSize_128() {SelectedChangeMaxTextureSize(128);}[MenuItem ("Custom/Texture/Change Texture Size/Change Max Texture Size/256")]static void ChangeTextureSize_256() {SelectedChangeMaxTextureSize(256);}[MenuItem ("Custom/Texture/Change Texture Size/Change Max Texture Size/512")]static void ChangeTextureSize_512() {SelectedChangeMaxTextureSize(512);}[MenuItem ("Custom/Texture/Change Texture Size/Change Max Texture Size/1024")]static void ChangeTextureSize_1024() {SelectedChangeMaxTextureSize(1024);}[MenuItem ("Custom/Texture/Change Texture Size/Change Max Texture Size/2048")]static void ChangeTextureSize_2048() {SelectedChangeMaxTextureSize(2048);}// ----------------------------------------------------------------------------[MenuItem ("Custom/Texture/Change MipMap/Enable MipMap")]static void ChangeMipMap_On() {SelectedChangeMimMap(true);}[MenuItem ("Custom/Texture/Change MipMap/Disable MipMap")]static void ChangeMipMap_Off() {SelectedChangeMimMap(false);}// ----------------------------------------------------------------------------[MenuItem ("Custom/Texture/Change Non Power of 2/None")]static void ChangeNPOT_None() {SelectedChangeNonPowerOf2(TextureImporterNPOTScale.None);}[MenuItem ("Custom/Texture/Change Non Power of 2/ToNearest")]static void ChangeNPOT_ToNearest() {SelectedChangeNonPowerOf2(TextureImporterNPOTScale.ToNearest);}[MenuItem ("Custom/Texture/Change Non Power of 2/ToLarger")]static void ChangeNPOT_ToLarger() {SelectedChangeNonPowerOf2(TextureImporterNPOTScale.ToLarger);}[MenuItem ("Custom/Texture/Change Non Power of 2/ToSmaller")]static void ChangeNPOT_ToSmaller() {SelectedChangeNonPowerOf2(TextureImporterNPOTScale.ToSmaller);}    // ----------------------------------------------------------------------------[MenuItem ("Custom/Texture/Change Is Readable/Enable")]static void ChangeIsReadable_Yes() {SelectedChangeIsReadable(true);}[MenuItem ("Custom/Texture/Change Is Readable/Disable")]static void ChangeIsReadable_No() {SelectedChangeIsReadable(false);}    //Unity3D教程手册：www.unitymanual.com// ----------------------------------------------------------------------------static void SelectedChangeIsReadable(bool enabled) {Object[] textures = GetSelectedTextures();Selection.objects = new Object[0];foreach (Texture2D texture in textures)  {string path = AssetDatabase.GetAssetPath(texture);TextureImporter textureImporter = AssetImporter.GetAtPath(path) as TextureImporter;textureImporter.isReadable = enabled;    AssetDatabase.ImportAsset(path);}}static void SelectedChangeNonPowerOf2(TextureImporterNPOTScale npot) {Object[] textures = GetSelectedTextures();Selection.objects = new Object[0];foreach (Texture2D texture in textures)  {string path = AssetDatabase.GetAssetPath(texture);TextureImporter textureImporter = AssetImporter.GetAtPath(path) as TextureImporter;textureImporter.npotScale = npot;    AssetDatabase.ImportAsset(path);}}static void SelectedChangeMimMap(bool enabled) {Object[] textures = GetSelectedTextures();Selection.objects = new Object[0];foreach (Texture2D texture in textures)  {string path = AssetDatabase.GetAssetPath(texture);TextureImporter textureImporter = AssetImporter.GetAtPath(path) as TextureImporter;textureImporter.mipmapEnabled = enabled;    AssetDatabase.ImportAsset(path);}}//Unity3D教程手册：www.unitymanual.comstatic void SelectedChangeMaxTextureSize(int size) {Object[] textures = GetSelectedTextures();Selection.objects = new Object[0];foreach (Texture2D texture in textures)  {string path = AssetDatabase.GetAssetPath(texture);TextureImporter textureImporter = AssetImporter.GetAtPath(path) as TextureImporter;textureImporter.maxTextureSize = size;  AssetDatabase.ImportAsset(path);}}static void SelectedChangeTextureFormatSettings(TextureImporterFormat newFormat) {Object[] textures = GetSelectedTextures();Selection.objects = new Object[0];foreach (Texture2D texture in textures)  {string path = AssetDatabase.GetAssetPath(texture);//Debug.Log("path: " + path);TextureImporter textureImporter = AssetImporter.GetAtPath(path) as TextureImporter;textureImporter.textureFormat = newFormat;  AssetDatabase.ImportAsset(path);}}static Object[] GetSelectedTextures(){return Selection.GetFiltered(typeof(Texture2D), SelectionMode.DeepAssets);}}

     以上代码参考：Unity3d：批量修改贴图导入设置工具脚本

然后，Unity3D界面如下：

在Project窗口中选中需要设置的纹理（可多选），然后点菜单命令执行对应的转换即可。