Rexture2D.ReadPixels slow

Hi I try make some texture stuff like:

Code (CSharp):

1. private void GenerateTexture(Color32[] pixels)
2.         {
3.             RenderTexture.active = renderTexture;
4.             texture2D.ReadPixels(new Rect(0, 0, width, height), 0, 0);
5.             texture2D.SetPixels32(pixels);
6.             texture2D.Apply();
7.             RenderTexture.active = null;
8.         }
9.  

Actually all works good BUT it is extremely slow.

I would like to do this with:

Code (CSharp):

1. Graphics.CopyTexture

Not sure how?
Any professonal here in texsture stuff who can hel with Graphics.CopyTexture? Or is there even other way to dot his?

 

You're calling both ReadPixels and SetPixels at the same time. The former will copy from "renderTexture", while the latter will copy from "pixels" and overwrite the first operation. Copying from a RenderTexture will always be slow if you require CPU access, but you shouldn't need to do both.

 

Heh thats true. Went already better if not perfect yet