Capture screenshots in batchmode

I am trying to run a unity service on a server which will take telemetry data and render out screenshots. However, though I can generate screenshots when running normally whenever I try to run my app in batchmode it produces only black images that match my screen size. I am even making sure to call Camera.Render before taking each screenshot.

Does anyone know what I can do to get this working or am I trying to accomplish something that is impossible?

 

Thanks for the response. The server does have a graphics card, it is just not running a desktop session. I had thought that batchmode was still capable of rendering if you manually called Camera.Render and you did not include the no graphics flag but it sounds like the thing we are trying to do is not actually possible.

 

I'm curious as to why there is a separate -nographics flag if -batchmode also disables graphics? What would be your recommended approach to doing what we are trying to do (automatic offline rendering)? We want to be able to control the application with batch or shell scripting.

 

I would also like to know how to do this.

 

Batch mode doesn't fully disable graphics, you can set a target texture to a camera, render the camera and then save that texture ( see Screenshots in Unity Editor in batchmode ), or use ScreenCapture.CaptureScreenshot