Question by agiro · Jul 12, 2017 at 06:49 PM · c#sprite texture2d resize

Resize a sprite by giving it more transparent pixels

I have a sprite the size of 402X188. I wish to use DTX5 format so I will probably need 404X188 to make it use the compression I mentioned. Now, I got to know about this feature a wee bit too late and I have a whole bunch of textures in place for my game. I'm trying to get around this using some simple code like so:

 using System.Collections;
 using System.Collections.Generic;
 using UnityEngine;
 
 public class ResizeSprites
 {
     public void Resize(Sprite sprite)
     {
         int _dimensions = 2;
         int greaterOldDim = Mathf.RoundToInt(Max(sprite.rect.width, sprite.rect.height));
         for (int i = 2; i <= greaterOldDim*2; i*=2)
         {
             _dimensions = i;
         }
         sprite.texture.
         Resize(_dimensions, _dimensions,TextureFormat.RGB24, false);
     }
     private float Max(float a, float b){return a > b ? a : b;}
 }

And needless to say it doesn't work. If I try to change TextureFormat to DTX5 it says can't resize to a compressed texture format. Currently it generates a completely empty texture (that's size is the power of 2, will adjust that). So, how to modify a sprite's size by code by basically adding transparent pixels to it?

Add comment · Show 2

toddisarockstar · Jul 13, 2017 at 12:12 AM 0

texture's import settings have to have read/write enabled in the inspector to do what you are talking about and i don't think sprite textures have this option!!!!!