New build is up. This one uses an OpenGL canvas to hopefully later on be able to switch between hardware and software rendering on the fly, instead of closing QZDoom. If this is ported back to ZDoom, you'll be able to switch between renderers on GZDoom, as well.
By the way - QZDoom does include dpJudas's SSAO branch, and as far as I know it is currently up-to-date.
The reason I mention it is because I think it should be tested more widely, and feedback should be given here
- with the hopes that someday it will be accepted into GZDoom.
In order to use it, you must do two things:
First, use the included GZDoom renderer. (Can be turned on by adding "+vid_renderer 1" from the command line - using "+vid_renderer 0" later on will turn it back off)
Second, you must actually enable it. (Console command: gl_ssao 1-3, or it's under Options->Display Options->OpenGL Options->Preferences->Ambient Occlusion Quality - or you can use gl_ssao 0 to turn it off)