Re: acceleration
"Patrick Shirkey" <[email protected]>
| Newsgroups | gmane.comp.lib.cairo |
|---|---|
| Message-ID | <[email protected]> |
On Tue, October 2, 2012 9:39 pm, Chris Wilson wrote: > On Tue, 2 Oct 2012 21:25:43 +1000 (EST), "Patrick Shirkey" > <[email protected]> wrote: >> >> On Tue, October 2, 2012 9:16 pm, Chris Wilson wrote: >> > On Tue, 2 Oct 2012 15:35:38 +1000 (EST), "Patrick Shirkey" >> > <[email protected]> wrote: >> >> Hi, >> >> >> >> Is there a simple test to know if cairo is using acceleration or is >> it >> >> just a matter of running a desktop with glx? >> > >> > Cairo dodges the complicated question of how to setup the rendering >> > pipeline leaving that to the application/toolkit. So in order for >> cairo >> > to use GL, the application must create a set of output Windows >> > compatible with GL and pass those and the context to cairo to use. The >> > degree of acceleration then depends upon the quality of the driver and >> > the style of rendering. In short, do not expect to switching to >> cairo-gl >> > to be an easy task to get fast rendering. >> In terms of 2d acceleration how would I know if cario is using the GPU or CPU? >> Thanks Chris. >> >> Is the recommended approached to use cogl directly, cairo or clutter? > > Use the appropriate tool to hand :) > > Clutter is excellent for controlling animations and emergent behaviour. > Cairo offers a simple means for describing a page layout (or parts there > of). > Cogl aims to make using OpenGL simpler and more portable, with a few > additional smarts. > >> FYI, I am using python3 with gtk3 and so far the only code I have been >> able to make work with this combination are the clutter examples. >> >> I have some existing opengl. I am looking at either porting it to >> cogl/clutter or if there is a way to load it directly with cairo that I >> have yet to come across. > > If you are starting from OpenGL, probably easier to go to clutter+cogl. > Cairo comes into its own for having a higher level description of paths > and shapes, but if you already are well versed in translating into > OpenGL, then you probably do not need Cairo and will probably be better > to avoid the impedance mismatch between the PDF rendering model and > OpenGL. However, if Cairo makes your design and maintenance easier, have > fun! > -Chris > > -- > Chris Wilson, Intel Open Source Technology Centre > -- Patrick Shirkey Boost Hardware Ltd -- cairo mailing list [email protected] http://lists.cairographics.org/mailman/listinfo/cairo