Question by MidnightCoffeeInc · Oct 03, 2021 at 12:53 AM · rendertexture png memory-leak

Question about Memory Leaking When saving RenderTexture as PNG

In my app I need to save a render texture as a PNG to disk, and this is working fine, but all tutorials or examples of this say to Destroy the created Texture2D to prevent memory leaking. In my case, however, I need to keep a reference to the created Texture every time I "save" a render texture, and destroying it breaks that functionality.
Would there be any problems if I don't destroy the tex variable and use it elsewhere? This is NOT being done every frame, only when a button is pressed periodically.

Here's my code:

         RenderTexture.active = linkedCamera.targetTexture;
 
         var tex = new Texture2D( targetTexture.width, targetTexture.height);
         tex.ReadPixels(new Rect(0, 0, targetTexture.width, targetTexture.height), 0, 0);
         tex.Apply();
 
         string imageSavePath = string.Format("{0}image_{1}.{2}",
         saveLoad.imageOutputPath,
         Utils.GetTimeString(),
         "png");
 
         File.WriteAllBytes(imageSavePath, tex.EncodeToPNG());

         Destroy(tex);

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