tom@laptop:~$ compiz --replace
Checking for Xgl: not present. 
Detected PCI ID for VGA: 01:00.0 0300: 1002:5460 (prog-if 00 [VGA])
Checking for texture_from_pixmap: not present. 
Trying again with indirect rendering:
Checking for texture_from_pixmap: not present. 
SKIP_CHECKS is yes, so continuing despite problems.
Checking for nVidia: not present. 
Checking for FBConfig: present. 
Checking for Xgl: not present. 
Starting gtk-window-decorator
/usr/bin/compiz.real (core) - Fatal: GLX_EXT_texture_from_pixmap is missing
/usr/bin/compiz.real (core) - Error: Failed to manage screen: 0
/usr/bin/compiz.real (core) - Fatal: No manageable screens found on display :0.0