2

I need to render a small (30s), text only scene, in a very fast way. The result needs then to be added on top of a multilayer exr frameset, to produce the final video. I'm using blender-internal, and having already disabled raytrace, textures, AO, etc... the question is: what can be done (maybe at code level) to reduce the rendering time as much as possible?

Many thanks, Regards GLoureiro

Gil Loureiro
  • 21
  • 1

1 Answers1

1

It seems like you have done some of things I would have already suggested.

  • Use Blender-internal or OpenGL render.
  • Reduce anti-aliasing samples.
  • Use a shadeless material
  • Don't use any lamps.
  • Tweak text resolution (for fewer triangles)
  • Experiment with tile size (larger tiles may give better performance)
  • Lock the user interface while rendering.
  • Render from the command line. (means you can't use OpenGL easily
    see Render with openGL from the command line? )
  • Check which formats save to disk fastest (PNG with low compression is quite good).
Community
  • 1
ideasman42
  • 47,387
  • 10
  • 141
  • 223
  • OpenGL is much faster doing this task, but from your answer its not usable via command-line, and its my case... is there any way to use it programmatically? – Gil Loureiro Oct 28 '14 at 13:15
  • You can run blender from the command line, it can open a window, GL render, then quit. If you don't have a graphics card (physically no GPU or monitor, some servers are configured this way) the only way I found to use OpenGL from the command line is to use Linux/Unix with a dummy X11 server (xorg) and use Mesa's software OpenGL (which is still fast for previews). Setting xorg-dummy-video for the driver – ideasman42 Oct 28 '14 at 15:07
  • See http://blender.stackexchange.com/q/2573/599 – gandalf3 Oct 28 '14 at 19:07