This is fabulous. I don't have the time to offer to help out, but am really glad you posted about it here, and look forward to taking it for a spin at some point. It's exactly the sort of thing I idly thought about doing years ago, before I became a dad and lost all my free time. :-)
On Saturday, January 2, 2016 at 5:18:32 PM UTC-6, elliot wrote: > > Hi all, > > Not a question here. More of an announcement and making sure I'm not > duplicating efforts or digging a hole with unforeseen serious limitations. > Any feedback is much appreciated. > > I'm interested in making a simple 2D game engine using pyglet. One issue > that came up was that translating and rotating every object every frame in > pure python was dominating the execution time (~90%). I tried using numpy, > but since each object has < 20 vertices it was actually a performance hit > rather than a gain. This got me interested in a more Data Oriented > Programming approach. All of the data needed for rotations could be > batched and operated on in one numpy vectorized operation. > > I wrote a simple proof of concept which you can find here: > https://github.com/Permafacture/data-oriented-pyglet > > Of course, using numpy correctly has reduced the heavy maths to 1/10th of > it's original execution time, increasing the max frame rate for 100 > spinning objects from ~225 fps to ~625 fps on my little thinkpad. > > I have spent some time reading through the graphics module of pyglet. I > really like the way it is set up. I originally thought I'd use batches, > and use ctypes to access the attribute buffers directly. But now I'm > thinking to just implement something very much like a domain (use pyglet's > allocator and the rest of pyglet graphics's Data Oriented Programming > style) and have it be a more general data oriented ORM which could render > it's vertices through glVertexPointer, glColorPointer and glDrawArrays (see > third.py in the repo). > > Thanks for reading and Happy New Year, > > Elliot > -- You received this message because you are subscribed to the Google Groups "pyglet-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at https://groups.google.com/group/pyglet-users. For more options, visit https://groups.google.com/d/optout.
