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Re: New DOS Glide / VGA / VESA game in 2021: Dzzee

Posted on 2021-10-15, 18:19

in Marvin \ Video
Here's the final build. As the behavior of real hardware vs Glide Wrappers (PCem/DOSBox-X/nGlide) was different, I actually got myself a Voodoo Graphics board this week to test it myself, and it works at 60 FPS on my K6-II 500 MHz. Download below. Screenshots: Screenshot 2021-10-15 at 20.13.58.png …

Re: New DOS Glide / VGA / VESA game in 2021: Dzzee

Posted on 2021-10-11, 15:44

in Marvin \ Video
Thanks to some help in the OpenWatcom Discord, I got the DOS Glide build to build with 2.43 (needed to pass in the NOCASEEXACT option to the Watcom linker, as the glide2x.lib symbols are all uppercase), if anybody wants to give it a try (needs glide2x.ovl, either in the system directories or in the …

Re: New DOS Glide / VGA / VESA game in 2021: Dzzee

Posted on 2021-10-11, 15:41

in Marvin \ Video
New version (software renderer) is great! About 1/10th the size of the openmesa version, compresses to 95 kb, and runs much faster -- higher fps. Quick question: Is the source code available? I want to give myself more lives. 8 just isn't enough. Tried looking for any obvious offsets in the binary, …

Re: New DOS Glide / VGA / VESA game in 2021: Dzzee

Posted on 2021-10-08, 17:41

in Marvin \ Video
A new release based on feedback from here, still fits on a floppy (as ZIP file, anyway): Version 1.1 (2021-10-08) ------------------------ - New 3Dfx build using Glide 2.43, for Win32 (using OpenWatcom) - New software rasterizer for DOS with 2 modes - Frame rate calculation rate is increased (every …

Re: New DOS Glide / VGA / VESA game in 2021: Dzzee

Posted on 2021-10-08, 17:38

in Marvin \ Video
This one finally did the trick for 3Dfx! :thumbup: Got a very consistent 60 FPS with vsync enabled and 205-220 FPS without it. If only the 3Dfx version of DOS could work using the same Glide library (which forces the user to find a suitable GLIDE2X.OVL file) that would be great. Neat :) While " …

Re: New DOS Glide / VGA / VESA game in 2021: Dzzee

Posted on 2021-10-05, 18:32

in Marvin \ Video
Too bad, but thanks for testing! Instead of spending time on DOS Glide further, I looked into making the 320x200 VGA mode faster by implementing a small rasterizer of my own instead of relying on OSMesa. A quick test in DOSBox gets me ~ 3x the performance in the title screen, in-game it can also be …

Re: New DOS Glide / VGA / VESA game in 2021: Dzzee

Posted on 2021-10-05, 05:24

in Marvin \ Video
Ok, here's one last try. This removes the SB code and the interrupt 1C (timer interrupt) handling, so has a fixed time step (10 ms per frame hardcoded), and no FPS counter (as this relies on measuring time). Input handling is done via kbhit() and getch(), so no fancy keyboard interrupt hooking like …

Re: New DOS Glide / VGA / VESA game in 2021: Dzzee

Posted on 2021-10-04, 17:23

in Marvin \ Video
Weird that the 3Dfx builds work in PCem and DOSBox for me, but that's why it's important to test on real hardware :) My first hunch was that it could be related to the Sound Blaster code I'm using (smix). So there's "nosb" builds attached to this post to try. But then I had a look through the code …

Re: New DOS Glide / VGA / VESA game in 2021: Dzzee

Posted on 2021-10-03, 19:59

in Marvin \ Video
Nice arcade game! Tested it on a K6-2+/450 computer with write combining enabled and got around 27-29 FPS average in-game on 320x240 32bpp in DOS. Thanks for testing, glad you like it :) The 3Dfx version didn't work for me and froze the computer with a black screen with a single Voodoo2 12MB card. …

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