I have an 8mb QDI V2200 Rendition card. Vsync can be disabled via the control panel In W9x, but how is this accomplished in DOS mode? Specifically I want to turn it off with the Rendition accelerated version of CART Racing 2. No luck yet on the internets, nor in the Rendition manual - anyone know?
EDIT: no luck yet either with google or messing around with files. This one is probably headed for the Unsolved bin..
EDIT 2: Please, no one respond - shooting for 100+ without a response. Disabling vsync in DOS on a verite card? who can respond? Shooting for 100. Just look and move on... lets keep 0/100+ going.
I can't really help with Cart Racing. You can try the "Alt-T" key combo but it will change the gamespeed, so actually useless.
I guess a monitor with 120 Hz or higher would fix most performance problems caused by V-Sync. (use the tools "renutil" / "ssutil" to set refreshrates in DOS).
Disabling V-Sync within windows gave me bad artifacts in direct3d games, so it is useless for me. I have the latest hercules driver installed.
Does it work for you within windows without the artifact, which drivers are you using on your vérité?
I see a great performance increase in VQuake2 by disabling V-Sync on my 60 Hz screen.
1Indy Car Racing 2 (readme from rendition patch) 2***** Rendition Specific Hot Keys ***** 3 4Alt-R: Frame rate display toggle. 5 6Alt-M: Three-state toggle for mirror: none, medium detail, 7 high detail. Defaults to medium. Anti-aliasing takes 8 place in hi-res mode only. 9 10Alt-W: Three-state toggle for weather: day, night, and rain. 11 This is a 'for fun / showing off' feature and is not a 12 realistic gameplay feature; e.g., traction does not change 13 in 'rain' mode. 14 15Alt-K: Sky optimization toggle: This defaults to off. Can speed 16 up frame rate at the expense of occasional graphical 17 glitches, especially on the horizon, when viewed at an 18 angle (like at Michigan when on a banked turn). May 19 not be a significant speedup unless you are in Turbo 20 mode and / or running on a track with no textured sky 21 (clouds). Only really useful for showing off "maximum 22 speed mode". 23 24 [Technically, can causes glitches on any non-textured 25 polygon that spans entire screen horizontally, like 26 when going under some bridges or facing sideways] 27 28Alt-A: Anti-aliasing toggle. Anti-aliasing smoothes the jagged 29 edges of the graphics on screen. 30 31Alt-T: Timer toggle ('Turbo mode'): When the timer is 'off', the 32 physics runs at the frame rate: it will be slower than 33 reality at less than 30 frames/sec, and faster than reality 34 at greater than 30 frames/sec. Advantage of 'off' is when 35 the timer is on, the frame rate cannot exceed 30 fps. Can 36 cause sound problems, especially in big crashes with lots 37 of smoke and dirt where the frame rate becomes low. Should 38 NOT be used in dual / multiplayer mode. This is a 'for 39 fun / showing off' feature only and comes with no warranties. 40 41Alt-X: "Maximum Speed Mode": Frame rate display on, mirrors off, 42 sky optimization on, anti-aliasing off, timer off. When 43 toggled off, reverses all these settings, regardless of 44 their previous values (i.e., restores default). 45 46Print Screen Dumps a 24-bit PCX screen shot to the race directory, 47 named ICR01.PCX, ICR02.PCX...; note that it always starts at 48 ICR01 and overwrites any existing PCX from a previous 49 session. 50 51 52Default settings: 53 Anti-Aliasing on 54 Medium-resolution Mirrors 55 Timer on (realistic physics) 56 Sky optimization off 57 Day weather mode 58 Frame rate display off 59 60NOTE: These settings are not saved to disk between sessions.
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61 62Sometimes you have to hit a key more than once for it to take. If 63one or more ALT keys are not responding, press 'Escape', then select 64"Resume"; this should restore functionality (this can happen if you use 65the CTRL key instead of ALT by mistake).
Last edited by falloutboy on 2015-11-01, 09:35. Edited 2 times in total.
You're not getting many responses because few people have a clue about Verite hardware. I have not tried Cart Racing 2.
Disabling vsync is one option. Triple buffering would be another. I don't know if either can be tweaked with the game though. 8MB RAM should be nice for triple buffering.
It's possible there are environment variables for Speedy3D that might be useful but I've never seen documentation. On Google Groups someone found one to toggle DMA for IndyCar Racing 2. That's all I can find though....
Yes ICR2/CART Racing does have a 30-fps lock. Though it pegs the limit on my Rendition 8mb/P933 rig I was curious to see if the limit was related in any way to v-sync. V-sync can be disabled in the Windows Verite control panel, but only for Windows sessions. I hoped there might be boot variables that could launch a DOS session (required for the Verite enhanced mode) with it disabled. I had no luck finding anything but given how short-lived the card was and the paucity of games powered exclusively by it, I'm not surprised.
The in-game key commands are there to help get frames up to 30 on slower machines - not to surpass the lock.
However, I read that the game's physics engine is directly tied to the frame cycle so even if v-sync were disabled it would mess up simulation timing - laps, sound effects, racing AI etc. would be disrupted. Not much would be gained except perhaps smoother control in practice lap mode, but then again lap times would not reflect reality.
