On 19/11/2007, gandalfn <[EMAIL PROTECTED]> wrote: > > Hello all, > > I am glad to announce the initial release of Cairo-CompMgr. > > Cairo Composite Manager is a versatile and extensible composite manager > which use cairo for rendering. Rendering can be done in 2D or 3D, using > Xrender and Glitz backends. Plugins can be used to add some cool effects > to your desktop. > > To find out more about it, just point your browser to: > http://cairo-compmgr.tuxfamily.org > > The goal of cairo-compmgr is to provide an easy way to multiple > rendering for compositing. I created it to fix a few specific problems > we faced at work : we need to do compositing without using the GPU in a > specific screen or, on the contraty, use only the GPU on another screen. > We were also willing to keep Metacity as the window manager for various > reasons. We first tried to enhance Metacity compositing features, but it > doesn't provide any way to do 2D rendering, and it lead to several > regressions. > > Cairo is the best solution to do the rendering in 2D, 3D or both, but > the main problem is that we cannot use Texture From Pixmap extension > because it is an OpenGL feature. The lack of this extension induces some > performance problems. Indeed, cairo-compmgr needs to copy the pixmap > provided by Xcomposite onto surface : to do so, cairo-compmgr does a > XCopyArea from Pixmap to Ximage, from which it makes the final surface. > This solution is a good way to get the surface but it implies some > slowness, which cairo-compmgr tries to workaround by using Xshm to > accelerate transfers, though this isn't enough to provide correct > performances. To minimize these problems, cairo-compmgr tries to > optimize the redraw of damaged areas. > > CCM is using GObject for object model design and provides a plugin > system which can be used to add various effects. At the moment "shadow" > and "menu transparency" plugins are available, and others coming soon. > To finish, cairo-compmgr aims not to add too many shortcuts and options > which could conflict with the window manager, but we'll try to interact > with it to add effects. > > In the future, I'm planning to add a clutter backend, some means for > other applications to interact with cairo-compmgr (especially > accessibility applications), some cool plugins, etc. > > Have fun
Sounds mighty exiting. However I get a crash and your bugtracker refuse to register me... Cheers, Mikkel
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