Archives May 2020

Ubuntu 20.04 unhappy on the old Dell XPS

Figured I'd try to update the old Dell 15" XPS with the broken keyboard as a machine for the kids to use as a desktop (for at-home schooling, etc) and do a bit of testing on the new release while I'm at it. The machine has been on 18.04, was updated and rebooted right before ...

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Started work on getting py-spy/speedscope in RunSnakeRun

So having finally written down the thoughts on a carbon tax, that kept distracting me from actually working on Open Source, I finally got a bit of work done on Open Source on the last night of the vacation.

What I started work on was getting a sampling profiler format supported, and for that ...

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What would a realistic Carbon Tax look like?

So if we (Canada) were to set flat carbon cost at a reasonable $.6/kg ($600/ton) instead of our current $.02 rising to $.05 in two years with the big polluters excluded, what would happen? Would it be effective at changing people's behaviour?

Fuel

  • Crude would go up by $258/barrel (currently $60)
  • Oil Sands crude up ...

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PyOpenGL 3.1.5 is Out

I've pushed out the PyOpenGL 3.1.5 release. It has some (relatively minor) fixes for wgl and egl operations, and one for what looks like a change in numpy scalar handling in the latest numpy. Available on PyPI now.

Windows Isn't a Horror Show

So it has been a long time since I forced myself to boot into Windows to get support/development work done for the platform. Other than one hard-freeze where the machine updated its drivers, rebooted, and just stopped recognising the keyboard or trackpad, it pretty much just worked (turning it off and on again did, as ...

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DRM Names for EGL Enumerated Devices

So it turns out that there's an extension for getting the DRM name for an EGL queried device that seems to work on Ubuntu 19.10. With that it should be relatively easy to target an off-screen render to a particular device. (The extension allows `eglQueryDeviceStringEXT` to respond to `EGL_DRM_DEVICE_FILE_EXT`). Happy New Year all.

Playing with EGL+OpenGL Off-screen Multi-Card

So I've now spent the last day and a half playing with getting EGL offscreen rendering working on Linux. There are two major ways to do off-screen rendering with EGL and OpenGL. In the first, you use a pbuffer surface, that surface is basically a purpose-defined surface-type for off-screen backing of a renderer. When I ...

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RunSnakeRun for Python3 Out

So I finally pushed out the Python3/wxPython Pheonix compatible release of RunSnakeRun. The Python3 version has to run Python2 in order to load Python2 pstats dumps, and Meliae doesn't AFAIK support Python3 yet, so I expect I'll just drop support for it eventually. The code is now living on GitHub rather than Launchpad.

Seems SimpleParse needs work for 3.8

So as I work through all the OpenGLContext projects to get automatic (or near automatic) releasing, SimpleParse wound up failing on the 3.x branches with a weird xml test failure. But with Python 3.8 the C code just won't import at all. Seems there was a change in Python 3.8 where it does a load-time ...

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PyOpenGL 3.1.4 is Out

So I just went ahead and pulled the trigger on getting PyOpenGL and PyOpenGL Accelerate 3.1.4 out the door. Really, there is little that has changed in PyOpenGL, save that I'm actually doing a final (non alpha/beta/rc) release. The last final release having been about 5.5 years ago if PyPI history is to be believed(!) ...

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