xcompmgr(1) General Commands Manual xcompmgr(1)

xcompmgr - sample X compositing manager

xcompmgr [-d display] [-r radius] [-o opacity] [-l left-offset] [-t top-offset] [-acCfFnsS]

xcompmgr is a sample compositing manager for X servers supporting the XFIXES, DAMAGE, and COMPOSITE extensions. It enables basic eye-candy effects.

Specifies the display to manage.
Specifies the blur radius for client-side shadows.
Specifies the opacity for client-side shadows.
Specifies the left offset for client-side shadows.
Specifies the top offset for client-side shadows.
Specifies the opacity change between steps while fading in.
Specifies the opacity change between steps while fading out.
Specifies the time (in milliseconds) between steps in a fade.
Automatic server-side compositing. This instructs the server to use the standard composition rules. Useful for debugging.
Client-side compositing with soft shadows and translucency support.
When -c is specified, enables a smooth fade effect for transient windows like menus, and for all windows on hide and restore events.
Simple client-side compositing. This is the default mode.
Server-side compositing with hard-edged shadows.
When -c is specified, attempts to avoid painting shadows on panels and docks.
When -f is specified, also enables the fade effect when windows change their opacity, as with transset(1).
Enables synchronous operation. Useful for debugging.

Probably. Please report any you find to https://gitlab.freedesktop.org/xorg/app/xcompmgr/.

Keith Packard, with contributions from Matthew Allum, Eric Anholt, Dan Doel, Thomas Luebking, Matthew Hawn, Ely Levy, Phil Blundell, and Carl Worth.

xcompmgr 1.1.10 X Version 11