Sure, there are a couple of commands for video options. With dom3 -h you can see them all.
Code:
******* Video Options *******
-w --window Run Dominions 3 in a window
-u --fullscreen Use the entire screen
--bitplanes X Try to use a color depth of X bits per pixel
--zbuffer X Try to use a depth buffer of X bits per pixel (default=16)
-T --textonly Use this with --tcpserver to get graphicless server
--gamma X Set gamma function (brightness) 0.1 - 5.0 (default=1.0)
--opacity X Set gui opacity 0 - 100
-r --res X Y Set screen resolution / window size (default=1024 768)
--animback Use animated backgrounds
-a --noanimback Don't use animated backgrounds
--fade Use fade effects
-f --nofade No fade effects
--nopopups No helpful popups
--fps X Aim for this nbr of frames per second (default=20)
--maxfps X Maximum nbr of frames per second (default=50)
--filtering X Quality of OpenGL filtering 0-3 (default=2)
--maxtexsize X Max texture size in pixels 32-4096 (default=unlimited)
--treequal X Tree quality 1-5 (default=3)
--texqual X Texture quality 1-5 (default=3)
--nolightfx No light effects in battles
--partamount X Max nbr of particles 0-8 (0=none, 4=default, 8=max)
--nograss Don't draw the grass
--noarcade Don't draw floating damage numbers
--noglext Don't use any OpenGL extensions
--vsync Enable vsync
-V --novsync Disable vsync
--renderpath X Use different optimizations 0-1 (0=good for low mem cards)
-x --fastgrx Faster graphics (use 3 times for best performance (-xxx))
-p --perftest Run a performance test and exit