Readpixels Was Called To Read Pixels From System Frame Buffer, While Not Inside Drawing Frame.

• Blog
• Forums
• Answers
• Evangelists
• User Groups
• Beta Program
• Advisory Panel

Search Unity

Unity ID

A Unity ID allows you to buy and/or subscribe to Unity products and services, shop in the Asset Store and participate in the Unity community.

• Forums

• Menu

ReadPixels was called to read pixels from system frame buffer, while not inside drawi

Discussion in 'Android' started by fesp, Apr 20, 2013.

1. fesp

   

   Joined:

   Apr 19, 2013

   Posts:

   3

   Please bear with me as I'm new to Unity. I'm using Vuforia and the Prime31 Etcetera plugin and am trying to email a screenshot of the application on an Android device. Vuforia works fine, sending an email works fine, but as soon as I try to create the screenshot LogCat shows me:

   ReadPixels was called to read pixels from system frame buffer, while not inside drawing frame.

   This is the code I'm using:

   2. void SendAndroidEmail( ) {
   3. int width = Screen. width ;
   4. int height = Screen. height ;
   5.         Texture2D tex = new Texture2D(width, height, TextureFormat. RGB24, false ) ;
   6.         tex. ReadPixels ( new Rect( 0, 0, width, height), 0, 0 ) ;
   8. byte [ ] bytes = tex. EncodeToPNG ( ) ;
   11. var path = System.IO . Path . Combine ( Application. persistentDataPath, "tmp_" + System . DateTime . Now . ToString ( ) + ".png" ) ;
   12. System.IO . File . WriteAllBytes ( path, bytes ) ;
   14.         EtceteraAndroid. showEmailComposer ( "noone@nothing.com", "Message subject", "click <a href='http://somelink.com'>here</a> for a present", true, path ) ;

   I have tried experimenting with yield but to no avail as I'm not sure what I'm doing...

   Thanks!

   Last edited: Apr 20, 2013

2. fesp

   

   Joined:

   Apr 19, 2013

   Posts:

   3

   I was able to get the screenshot by moving the code above from 'Update' to 'LateUpdate'. But unfortunately then in the the screenshot I can only see the camera image with the marker (or target), but not the model rendered on top of that...

   Is there some other place I need to execute this code form to get both the model and the camera image?

3. Alexey

   

   Unity Technologies

   Joined:

   May 10, 2010

   Posts:

   1,459

4. fesp

   

   Joined:

   Apr 19, 2013

   Posts:

   3

   Thank your very much! OnPostRender did the trick.

Readpixels Was Called To Read Pixels From System Frame Buffer, While Not Inside Drawing Frame.

Source: https://forum.unity.com/threads/readpixels-was-called-to-read-pixels-from-system-frame-buffer-while-not-inside-drawi.179111/

Posted by: cattplithenewark.blogspot.com

Share this post