+1. Cairo for 2D and OpenGL for 3D / ( 2D if what Cairo provides is inadequate for that use case.. )
http://artgrammer.blogspot.in/2011/05/drawing-nearly-perfect-2d-line-segments.html On Wed, Jun 12, 2013 at 5:45 PM, Clément Bera <bera.clem...@gmail.com>wrote: > I asked Igor a few weeks ago. Basically his answers were : > > Cairo is for 2D. > OpenGL is for 3D. > > If you do 2D with openGL it is possible but much more complex : a lot of > API are missing fr 2D rendering. > Moreover, Cairo is faster for 2D. > > Then other guys than me can give other explanations. > > > 2013/6/12 kilon <theki...@yahoo.co.uk> > >> I think its a smart move you started from cairo and then moved to opengl. >> Its >> possible afterall to mix cairo with opengl. I think its inevitable . It >> does >> not matter that opengl does not specialize on vector graphics, it can do >> vector graphics and offer massive accelerations in the process. >> >> As soon as I learn opengl my focus will be shifted to porting morphic (at >> least the base part) and drag Athens in the process. So tell your friend >> that opengl support is definetly coming ;) . Just dont tell him "soon" :D >> >> I am not going to be rewriting Cairo into smalltalk of course, or doing >> any >> kind of major coding / rewrite , just using the existing methods Cairo has >> for communicating with opengl. From the little I know it creates a quad >> polygon in opengl ,apply a texture on it and Cairo is used to draw the >> texture. >> >> One of things people who are not familiar with graphics is general are not >> aware of is the massive acceleration a GPU can give, that in some cases >> can >> outperform CPUs by 100 times. But thats not the mind blowing stuff, the >> mind >> blowing stuff is that this acceleration is not even graphics specific. >> CUDA >> technology is already used in physics, maths and other extremely demanding >> computing tasks. Pharo can tap on this massive power (eg . language >> parsers >> ) that is even available even on 100 euros nvidia cards and soon will be >> available for every pc and mac out there for peanuts. Probably its a >> matter >> of time before penetrate the mobile market too. >> >> We coders in blender (3d app) have already seen blender's new render >> engine >> offer the unthinkable , real time full renders with minor delays using the >> CUDA technology through the new render engine called "cycles". The >> previous >> render engine would take at least minutes to offer a same quality render, >> so >> its a massive move forward. >> >> So my conclusion is that eveything has its place . Cairo + Opengl + CUDA , >> makes a trio of ustopable benefits that pharo cannot afford to ignore in >> any >> case. I will try to offer my little part in this process, it wont be easy >> I >> know , it could take years, but it will certainly be a lot of fun . >> >> >> >> -- >> View this message in context: >> http://forum.world.st/Pharo-dev-Cairo-vs-openGL-tp4692947p4692975.html >> Sent from the Pharo Smalltalk Developers mailing list archive at >> Nabble.com. >> >> > > > -- > Clément Béra > Mate Virtual Machine Engineer > Bâtiment B 40, avenue Halley 59650 *Villeneuve d'Ascq* >
