4f5217313e
Instead of clearing the whole output region after a repaint, clear only the regions that were actually painted. This way, the damage added when a surface moves from the primary plane to another one is kept while this region is obscured by the opaque region. This allows the contents below an overlaid surface to be culled, but to make this work properly, it is also necessary to change the way previous damage is drawn. Consider the following scenario: a surface is moved to an overlay plane leaving some damage in the primary plane. On the following frame, the surface on the overlay moves, revealing part of the damaged region on the primary plane. On the frame after that, the overlaid surface moves back to its previous position obscuring the region of the primary plane repainted before. At this point, the repainted region was added to the output's previous damage so that it is draw to both buffers. But since this region is now obscured, the redrawing is skipped. If the overlaid surface moves again revealing this region, one of the buffers actually contains the wrong content. To fix this problem, this patch ensures that any previous damage that would be lost is actually preserved by folding it back into the primary plane damage just before repainting. |
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| clients | ||
| data | ||
| protocol | ||
| shared | ||
| src | ||
| tests | ||
| wcap | ||
| .gitignore | ||
| autogen.sh | ||
| configure.ac | ||
| COPYING | ||
| Makefile.am | ||
| README | ||
| weston.ini | ||
Weston Weston is the reference implementation of a Wayland compositor, and a useful compositor in its own right. Weston has various backends that lets it run on Linux kernel modesetting and evdev input as well as under X11. Weston ships with a few example clients, from simple clients that demonstrate certain aspects of the protocol to more complete clients and a simplistic toolkit. There is also a quite capable terminal emulator (weston-terminal) and an toy/example desktop shell. Finally, weston also provides integration with the Xorg server and can pull X clients into the Wayland desktop and act as a X window manager. Refer to http://wayland.freedesktop.org/building.html for buiding weston and its dependencies.