MantisBT - Zandronum
'https://www.doomworld.com/idgames/levels/doom2/Ports/megawads/wos [^]'
2- Run Zandronum 3.0 in OpenGL mode with the save game to load Whispers of Satan - MAP21 at the specific area:
zandronum -iwad doom2.wad -file WOS.wad +vid_fps 1 +vid_renderer 1 +load wos-savegames/zandronum-3.0-170901-1140/opengl/save5.zds
3- Walk in the loaded area, very low FPS.
On Linux, vertical sync cannot be turned off from the display options menu so I have to open a terminal and type "export vblank_mode=0" to turn it off before running Zandronum/GZDoom. Vertical sync support for Linux was added with this commit:
'https://github.com/coelckers/gzdoom/commit/4eb32a50e3151968e1b2285688ce98da98fedd9f [^]'
Zandronum 3.0-170901-1140 / 3.1-alpha-180826-2001
OpenGL: 11 fps - 32 fps
Software: 184 fps - 200 fps
GZDoom 1.8.6
OpenGL: 75 fps - 117 fps
Software: 188 fps - 200 fps
Zandronum 1.0-120819-2011
OpenGL: 48 fps - 85 fps
Software: 152 fps - 193 fps
Zandronum 2.1.2-150718-1029
OpenGL: 50 fps - 94 fps
Software: 154 fps - 197 fps
CPU: Intel Core i5-460M
$ uname -a
Linux 4.17.0-19.2-liquorix-amd64 #1 ZEN SMP PREEMPT liquorix 4.17-15.1~sid (2018-08-25) x86_64 GNU/Linux
$ glxinfo | grep OpenGL
OpenGL vendor string: Intel Open Source Technology Center
OpenGL renderer string: Mesa DRI Intel(R) Ironlake Mobile
OpenGL version string: 2.1 Mesa 18.2.0-rc4
OpenGL shading language version string: 1.20
OpenGL extensions:
OpenGL ES profile version string: OpenGL ES 2.0 Mesa 18.2.0-rc4
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 1.0.16
OpenGL ES profile extensions:
wos-savegames.zip (1,362,428) 2018-09-01 16:03/tracker/file_download.php?file_id=2372&type=bug