Re: Death Gate

Posted on 2005-08-25, 19:43

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by vasyl

in DOSBox Games/Apps

in DOSBox Games/Apps

Proper CD version definitely works but that game is hard to come by these days. There was something about that game and multiple CD drives, you may want to play with that. IIRC, the game has text configuration file, check if its contents make sense. If everything else fails, just play it without …

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Re: Overscan border patch

Posted on 2005-08-24, 04:49

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by vasyl

in DOSBox Patches

in DOSBox Patches

I did not measure exact color values, relied on interp_w2 implementation itself. The first (broken) screenshot is really odd. It seems that blending almost worked but there was color overflow from one component to another, almost like blending was used on some packed color format without unpacking …

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Re: Patch for Tseng SVGA support is available in SourceForge

Posted on 2005-08-24, 04:43

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by vasyl

in DOSBox Patches

in DOSBox Patches

I am not done yet. The latest version still did not fix all VGA scrollers. I am looking into the remaining issues and it looks like there is something wrong about chain4 implementation. Current implementation treats chain4 as linear and uses that flag to detect linear memory modes. This is fast but …

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Re: Patch for Tseng SVGA support is available in SourceForge

Posted on 2005-08-23, 08:00

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by vasyl

in DOSBox Patches

in DOSBox Patches

You are welcome. Most work was done by other developers, I just added a few touches. New version of the patch is up at SF. This time a few cosmetic changes: ET4k can be selected as either et4000 or et4000new, only the second one will have 1280x1024x16 mode so TLIVESA1 is usable in the other one (did …

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Re: Patch for Tseng SVGA support is available in SourceForge

Posted on 2005-08-21, 08:25

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by vasyl

in DOSBox Patches

in DOSBox Patches

Found what I've missed in Lode Runner: The Legend Returns (did not find how I've missed it though :blush: ). Function 1123h of int 10h (load 8x8 double dot font) was not implemented. It appears that LR does not use the loaded font itself but uses font metrics... The patch is up on the Sourceforge. …

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Re: Patch for Tseng SVGA support is available in SourceForge

Posted on 2005-08-21, 06:28

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by vasyl

in DOSBox Patches

in DOSBox Patches

rcblanke: Looks like I've missed something with my patch. It is correct but incomplete still. Back to the drawing board. Sorry about that. DosFreak: Thanks for the suggestion. I rarely use VPC with games lately, only for sandboxing. At your suggestion I've tried it and that game works, kind of. I …

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Re: Crystal Caves Hud Shaking

Posted on 2005-08-21, 06:21

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by vasyl

in DOSBox Games/Apps

in DOSBox Games/Apps

Also, make sure you are not running debug-enabled build unless you really need to. The debugger can reduce performance, in some cases quite significantly.

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Re: Patch for Tseng SVGA support is available in SourceForge

Posted on 2005-08-20, 09:13

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by vasyl

in DOSBox Patches

in DOSBox Patches

I've found what was causing crash in one of WHATVGA modes with the latest version of my patch. The bug is not in the patch, it was just hidden before. In vga_draw function VGA_Draw_VGA_Line (EGA_Line as well) is overoptimized. There are some conditions when the returned address may be outside of …

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Re: Crystal Caves Hud Shaking

Posted on 2005-08-19, 22:29

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by vasyl

in DOSBox Games/Apps

in DOSBox Games/Apps

It is blended so it does not obscure any pixels completely. The technique should work in all games, the implementation is not specific to Crystal Caves, although I haven't tried to modify scalers other than normal2x yet. It has to be configurable -- in some games three pixels is the best settings, …

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Re: Crystal Caves Hud Shaking

Posted on 2005-08-19, 06:59

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by vasyl

in DOSBox Games/Apps

in DOSBox Games/Apps

Sorry, my mistake. I've noticed this +1 bug in code after I submitted the message. You have very sharp eye.

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Re: Crystal Caves Hud Shaking

Posted on 2005-08-19, 06:07

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by vasyl

in DOSBox Games/Apps

in DOSBox Games/Apps

Well, single pixel does not work well -- not very readable. Interlined pixels was just too odd. OTOH, blending was not nearly as bad as I expected. See the example. Three pixels are used for border. Blend ratio of border to game color is 2:1 to make border more pronounced. Right now I have only …

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Re: Crystal Caves Hud Shaking

Posted on 2005-08-18, 17:13

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by vasyl

in DOSBox Games/Apps

in DOSBox Games/Apps

That's actually HunterZ's idea, I just proposed not to show the default color. I've tried this idea last night (not as working solution, just hacked scalers to see how it looks). It does work but there is one problem. On hires monitor it is very difficult to tell the color of single-pixel border. …

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Re: Crystal Caves Hud Shaking

Posted on 2005-08-17, 21:35

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by vasyl

in DOSBox Games/Apps

in DOSBox Games/Apps

In most cases lowres modes are scaled up on user's screen so one pixel border will work without obscuring any game pixels completely. Besides, it really needs to be drawn only when the default (0) color is changed which does not happen in many games. I don't see a satisfactory solution for hires …

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Re: Crystal Caves Hud Shaking

Posted on 2005-08-17, 06:34

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by vasyl

in DOSBox Games/Apps

in DOSBox Games/Apps

Shaking hud is not due to an "obscure feature." There is missing logic in VGA_DrawPart in vga_draw.cpp. This code: if (vga.draw.split_line==vga.draw.lines_done) { vga.draw.address=0;vga.draw.panning=0; vga.draw.address_line=0; } is incomplete, it should be: if (vga.draw.split_line==vga.draw.lines_ …

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Re: Alone in the Dark setups

Posted on 2005-08-17, 05:41

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by vasyl

in DOSBox Games/Apps

in DOSBox Games/Apps

Checked and yes, it should be fixed with that "Get Font Info" patch. BTW, the background in that screenshot above is also wrong -- same bug.

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Re: Alone in the Dark setups

Posted on 2005-08-16, 23:40

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by vasyl

in DOSBox Games/Apps

in DOSBox Games/Apps

I have Alone in the Dark Trilogy, don't know if it has the same setup or not. I'll check tonight.

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Re: Alone in the Dark setups

Posted on 2005-08-16, 19:50

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by vasyl

in DOSBox Games/Apps

in DOSBox Games/Apps

Interesting, the buttons text moved half-way up the screen. This is symptomatic with that Lode Runner bug that I've fixed last night. The patch is in Sourceforge but did not make through to ykhwong's build yet. If you can compile DosBox I would suggest trying with that patch.

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Re: Patch for Tseng SVGA support is available in SourceForge

Posted on 2005-08-16, 06:33

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by vasyl

in DOSBox Patches

in DOSBox Patches

Meanwhile, the patch that fixes Lode Runner The Legend Returns is up at Sourceforge. I was not completely right with the workaround I've suggested before. It is not easy to find info on font sizes in different modes. After some research I've found that there is no consistency across chipsets so …

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Re: Patch for Tseng SVGA support is available in SourceForge

Posted on 2005-08-15, 08:51

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by vasyl

in DOSBox Patches

in DOSBox Patches

Yes, I have noticed. That's why I've submitted those minipatches for Wari and Overkill before. I will submit this one as well but only after some research -- I believe there are other modes that have incorrect font size in mode table right now. I've tried to split my patch into smaller parts but it …

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Re: Patch for Tseng SVGA support is available in SourceForge

Posted on 2005-08-15, 07:38

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by vasyl

in DOSBox Patches

in DOSBox Patches

Speaking about Lode Runner: The Legend Returns, there is a bug in int10_modes.cpp (repeated in vga_tseng and vga_paradise in my patch). It looks like mode 640x480x256 is supposed to have 8x8 characters, not 8x16. To get the game to draw properly on emulated S3 look for mode 0x101 definition in int10 …

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