Broken drivers? I can not guess your machine configuration.

Disabling HDR and/or Shaders may help.

We are vaguely aware of problems with certain drivers and chips, notably the free Radeon drivers and Intel GPUs. If you can, try without shaders. Also if you can, try with an older version of Pioneer - perhaps alpha 12? Let us know the details of your GPU, drivers and how your tests go.

When you say this do you mean the 64bit version of Arch linux? Or just a 64bit architecture? I'm guessing the former.

As the others have said the first thing we need to know is what hardware and software/OS you're actually running.

Then we should really be able to start helping 😀

Turning off shaders helped. Now can see everything. 😀

As for my computer, it has a 64 bit CPU (Intel Core i5), and I'm running 64 bit Arch Linux. I have an Intel graphics chip with an Nvidia GPU in a hybrid configuration which under Windows is called Optimus, and which under Linux is mimicked by something called Bumblebee ( https://wiki.archlinux.org/index.php/Bu ... w_it_works). The reason I thought it didn't have anything to do with that is that other 3D applications (glxgears, celestia) don't seem to have a problem.

Thanks for the help.

Ok, that's something 🙂

I'm going to guess then that you're using Nouveau and not the proprietary Nvidia drivers? If you are using the proprietary driver then I'm going to guess there's something deeper with all this Optimus/Bumblebee business.

That said, I've fairly confident there's something a little quirky in our shaders that is causing problems on less mature drivers. We've seen shader glitches at various times in the past with open source drivers and under VMware.

Thanks for the info!

No, in fact I'm using the nvidia drivers, not the nouveau drivers:

$ dmesg | grep nvidia

[ 6.909001] nvidia: module license 'NVIDIA' taints kernel.

[ 7.032248] nvidia 000000.0: power state changed by ACPI to D0

[ 7.032255] nvidia 000000.0: power state changed by ACPI to D0

[ 7.032260] nvidia 000000.0: enabling device (0000 -> 0003)

[ 7.032269] nvidia 000000.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16

[ 7.032279] nvidia 000000.0: setting latency timer to 64

If you need more info, I'd be happy to help.

Re-reading the Bumblebee page on the Arch wiki, I realised I wasn't using Bumblebee at all. To use it, I have to do

The difference is nicely illustrated using glxgears:

When running pioneer, I forgot to use the optirun command, so I was only using the Intel chip. Someone mentioned shader problems with Intel chips, so that will have been it. But when I do run pioneer through the optirun command, I can use shaders without problems 😀

Great! Well not great, but at least consistent with what we already know. Thanks for testing, and enjoy Pioneer in its shaderful glory 🙂