Pipeline crashes after a few 10000 frames

Scripting Issues
1

Hi,

I am using panda3d to generate different views of an object model. For this, I load the egg file, set the hpr on the object and render its depth image, set a new hpr, render, and so on. However, after a few 10000 rendered frames, I get the following error:

Memory usage overflow for type RenderState.

Any ideas where to look?
I am using panda3d 1.9.1 with python on Ubuntu 14.04

Thanks,
Max

2

You the result of the render, save it on your hard drive and clear the variable every frame.

3

To diagnose the issue, you could also fire up pstats and see if anything is steadily increasing every frame to the point of filling up memory.

This could be a memory leak, or a state cache overflow, or an overallocation attempt. Since it has to do with RenderStates, you could try disabling the render state cache and see if that fixes it:

state-cache #f

Does your program use its own main loop and/or do you avoid ShowBase? Normally, when using base.run(), Panda calls this every frame:

        TransformState.garbageCollect()
        RenderState.garbageCollect()

You may need to call this manually between renders.

4

Hi,

thanks for your reply. I do not use the ShowBase.run(), so adding:

        TransformState.garbageCollect()
        RenderState.garbageCollect()

after each rendering did the job. No more crashes :wink: