convert Texture to Texture2D

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Hello guys, I want to save a custom painted texture of car in device storage (android/IOS) but my painted texture is of Texture type, now I need to convert it to Texture2D to have a byte format to save it into device. Searched many demos and examples but none works. Thanks!

Answer 1

Answer by Vincent1236 · Feb 19, 2018 at 02:01 PM

After some digging I found another link which explains your situation, see if this helps you. Copying it here for future sake (Credit To:BBIT-SOLUTIONS):

   Texture mainTexture = renderer.material.mainTexture;
              Texture2D texture2D = new Texture2D(mainTexture.width, mainTexture.height, TextureFormat.RGBA32, false);
  
              RenderTexture currentRT = RenderTexture.active;
  
              RenderTexture renderTexture = new RenderTexture(mainTexture.width, mainTexture.height, 32);
              Graphics.Blit(mainTexture, renderTexture);
  
              RenderTexture.active = renderTexture;
              texture2D.ReadPixels(new Rect(0, 0, renderTexture.width, renderTexture.height), 0, 0);
              texture2D.Apply();
  
              Color[] pixels = texture2D.GetPixels();
  
              RenderTexture.active = currentRT;

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parth_vadera · Feb 19, 2018 at 02:13 PM 0

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Hmmm. I'm totally unaware of Graphics.Blit(). I should try it! Thank you again!

Answer 2

Answer by Vince_TenebrisLab · Feb 19, 2018 at 01:18 PM

You can simply cast your Texture to a Texture2D. Like So:

 Texture2D tex2D = (Texture2D)PaintedTexture;

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parth_vadera · Feb 19, 2018 at 01:24 PM 0

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Gives an error "InvalidCastException: Cannot cast from source type to destination type." Even PaintedTexture as Texture2D doesn't work.

Vince_TenebrisLab parth_vadera · Feb 19, 2018 at 01:29 PM -1

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You can definitely convert a Texture to Texture2D as shown above. Are you sure PaintedTexture is of type Texture? Some code from you might help

Bunny83 Vince_TenebrisLab · Jun 24, 2019 at 01:42 AM 3

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Actually, no. You can't always cast a Texture to a Texture2D. You can only do that if the texture is actually a Texture2D. Texture is the base class for all texture types. Currently there are only two texture types: Texture2D and RenderTexture. If the texture you want to cast to Texture2d is a RenderTexture it will fail.

Texture2D has a representation on the GPU and might also have one on the CPU side. RenderTextures are pure GPU textures. If you want to "convert" a RenderTexture to a Texture2D you actually have to copy the content like Vincent1236 showed in his answer.

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karsnen · Apr 18, 2019 at 01:51 AM 0

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In 2018.3.11, it does work on the Editor but however it gives the following error. InvalidCastException: Specified cast is not valid.

Answer 3

Answer by Max-Bot · Jan 07, 2019 at 04:15 PM

Unity 2018+

 public static class TextureExtentions
     {
         public static Texture2D ToTexture2D(this Texture texture)
         {
             return Texture2D.CreateExternalTexture(
                 texture.width,
                 texture.height,
                 TextureFormat.RGB24,
                 false, false,
                 texture.GetNativeTexturePtr());
         }
     }

Usage:

 Texture2D texture2D = your_texture.ToTexture2D();

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distastee · Mar 05, 2019 at 07:45 AM 1

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Worth noting - Unity will die if you use this code on anything runtime generated. Only use this if you imported the asset into Unity Editor.

Mammuoils1 · Feb 17, 2020 at 09:44 AM 0

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Unit 2019 will crash if use this solution.

Answer 4

Answer by RendergonPolygons · Nov 05, 2021 at 10:32 AM

Unity 2020 crash

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convert Texture to Texture2D

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