id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	field_blocks	field_dependson	field_seealso
485	Desktop is slow	Jiri Svoboda		"The composited desktop is way too slow to be usable with Qemu/non-KVM even on decent hardware (2.5-3.0 GHz). Need to speed it up so that Qemu is usable again.

Workaround: Disable kernel framebuffer support to get a text-only console or use KVM or VirtualBox.

Some areas of improvement:
  * It seems nearly all operations are done on a per-pixel basis without taking advantage of operating on many pixels
  * All pixel transfers always go through full alpha-blending even when the window is completely opaque
  * All pixel transfers go through full filtering even when the transformation is identity or mere translation
  * Alpha blending is computed in double floating point although the pixel buffers themselves are integer
"	defect	closed	major	0.6.0	helenos/unspecified	mainline	fixed