Author archives: Mike

Spent the day on qnet yesterday.  Biggest change was using a structured library for the package/message format encoding/decoding.  That same structure stuff should be usable by people writing games to write their own protocols.  It's pretty straight-forward stuff.  Could use some optimisation work though. Speed dropped considerably with the structured approach instead of making single ...

As (extension) functions in OpenGL often are not available until a valid context is created (and functions can be available/unavailable for different contexts), it's necessary to do some lazy-loading inside PyOpenGL sometimes.  Discovered today that the glHistogram wrappers were doing load-time checks for function availability and only wrapping the functions if the checks succeeded.  So, ...

Worked on qnet yesterday.  Got the stateless (ordered, not guaranteed) channel working.  Basically this channel allows you to send messages with "keys" (think of them as sub-channels) where each key is considered to be a stateless update.  That is, each message with a given key is a complete update as to the current state of ...

Got the multiple-channel dispatching roughed in.  Also roughed in the event-sending interface.  Sped up the handling considerably for long pending queues (was doing a linear scan of the whole queue for each ack'd message, oops).  Also roughed in code for ordered-but-not-guaranteed channels (i.e. channels that keep the latest received values, dropping any missing messages).  Statistics ...

Had a lovely chat with Li-Fan down at Linux Caffe this evening, then home for dinner and playing with qnet. I'm enjoying playing with different strategies for the library (parallelizing delivery, seems to just flush the caches rather than speeding delivery, for instance).  Really, it's that ability to play with strategies that I see being ...

I've been working a bit on pyqnet over the weekend.

• refactored into multiple modules in a package with a setup script
• I've got a UDP-level implementation (i.e. real network level operations)
• statistics gathering is started
• the beginnings of adaptive retry/backoff code are there (i.e. resend frequency based on normal connection latency)
• fixed handling of lossy ...

Couldn't sleep this evening, so I sat down and hacked up a loose sketch of a networking library for Pygame.  The loose sketch is based on the description Phil gave at the OLPC jam at PyCon, but it's nowhere near finished yet.  Basically it's got the ordering and reliability stuff built, but hasn't touched ...

Erik Thompson has a video tutorial up on ShowMeDo where he builds a molecular viewer using PyOpenGL, wxPython and bzr.  Haven't had time to view it myself, but it looks quite extensive.  Focus seems to be on new users.

Discovered a bug in PyOpenGL under Mesa this morning.  One of those "duh!" moments where you realise you're being a bit too clever and simple about things.  Luckily it was pretty easy to fix, as the whole of the extension hierarchy is auto-generated.

Basically, in OpenGL, extensions and functions > 1.1 are all potentially missing ...

Just released PyOpenGL 3.0.0b4.  This is a fairly minor point release.  It's the first to contain the proof-of-concept VBO support.  It also has a few more tests.  Still need work on the WGL extensions so that older WGL-using code that uses them will work.

A few fixes in OpenGLContext CVS as well.  Not releasing a ...