Create Sprite from 2DTexture - only returns white-ish field

Hello there,

i aim to render a cameras view, output it as a 2dTexture and to then convert it to a sprite so that i can display it as an image in my ui.

It works if i take the step to save the image and reload it from there as sprite but this is stupid concerning performance. So the approch i wanted to take is to use Sprite.Create() to directly convert the 2DTexture into a sprite. But this only returns a evenly colored white/grey -ish field.

         RenderTexture rt = new RenderTexture(resWidth, resHeight, 24);
         myCamera.enabled = true;
         myCamera.targetTexture = rt;
         Texture2D screenShot = new Texture2D(resWidth, resHeight, TextureFormat.RGB24, false);
         
         myCamera.Render();
         RenderTexture.active = rt;
         screenShot.ReadPixels(new Rect(0, 0, resWidth, resHeight), 0, 0);
         Sprite.Create(screenShot, new Rect(0, 0, resWidth, resHeight), new Vector2(0.5f,0.5f),100.0f);

The Texture2D screenShot contains the right content since the conversion and saving in png format works.

If anyone happens to ahve some insight for me on this i'd be glad to hear it. If you need more information on the project/code feel free to ask. Thanks in advance!