Which Khadas SBC do you use?
**Khadas VIM3 pro**
Which system do you use? Android, Ubuntu, OOWOW or others?
**Ubuntu 20.04**
Which version of system do you use? Khadas official images, self built images, or others?
**Official Khadas image Ubuntu 20.04**
Please describe your issue below:
`**I can not switch on the support of Open GL ES. Every program that uses Open GL ES can not be started and shows a message box with text like: “Can not get right renderer mode” or something similar. I can not find any information how to change the actual renderer or switch on Open GL ES.
For example I have installed the videogame “Doom” through the terminal (chocolate doom) and add the classic Doom.WAD file to the source directory but by the launch I get the message, that the game can not find the right renderer (Doom uses OpenGl). The second example: I use processing programming language and can use for the rendering Java or Open GL renderings (Render Techniques / Processing.org). The second mode (Open GL) doesn’t work on my Khadas.
I had experience with Raspberry Pi 4B and I had the same problem. But the Raspberry PI 4B has a tool named Raspi-config that gives the ability to change the renderer to Open GL ES. I don’t know the similar tool on Khadas.
What should I do to use the abilities of OpenGl ES on Khadas? Should I install something or simple edit some text files in root directories?.**`