Hi, we have some nice opengl visualisation, that only works on linux, but I would like to make it work with Sage and on all platforms.
So I first thought I would rewrite it in pyglet, that works everywhere (I tested a prototype already and it indeed works). However, pyglet is not easy to fix for offscreen rendering, which is one of my requirements, so that it can run on the notebook server. Mesa is an implementation of opengl, here is a spkg package: http://femhub.googlecode.com/files/mesa-7.4.4.p3.spkg, it builds without any problems on all platforms (32bit, 64bit, linux, Mac). So I just wrapped a few mesa commands here: http://github.com/certik/osmesa and made it work with offscreen rendering, and it just works, both on linux and Mac (in Sage) in produces "a.pnm" with an image rendered using opengl. So I am positive that I can get the job done using this approach. I have to ditch pyglet, but that's life (if it doesn't work offscreen, then it's useless). So why I am asking here. :) I am baffled why pyglet uses this library on Mac: "AGL_H = '/System/Library/Frameworks/AGL.framework/Headers/agl.h'. Is it because this library is on Mac by default, so pyglet tries to use it, so that users don't have to install anything? However, if I install mesa (which I do anyways), then I don't need it? Or could it be that if I install mesa on Mac, I never get hardware acceleration, while if I use agl, I get it? If I install mesa on linux, do I get hardware acceleration? Do I need to enable it somehow? It works fast enough on my laptop, but I don't know if it's software rendering or hardware one. Many thanks for any feedback, Ondrej --~--~---------~--~----~------------~-------~--~----~ To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/sage-devel URLs: http://www.sagemath.org -~----------~----~----~----~------~----~------~--~---
