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#83653 - 01/01/13 01:48 AM Re: PC/XT/AT (inside) WIP topic [Re: Kale]  
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MikeAbson Offline
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Hexen II PC Demo:

Running at 640x480x256 on Windows 95. Game uses a modified Quake 1 engine.






#83654 - 01/01/13 03:50 AM Re: PC/XT/AT (inside) WIP topic [Re: Kale]  
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Alegend45 Offline
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I'm trying to figure out untested edge-cases for the next revision of my PC and PC/XT doc. First, though, I need to know what they are, please.

#83656 - 01/01/13 05:40 PM Re: PC/XT/AT (inside) WIP topic [Re: R. Belmont]  
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Kale Offline
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Originally Posted By R. Belmont
Regarding the PEL shift extravaganza, I'd like to point out that DOSBox ignores pretty much all of the behavior that the test program shows but runs games and demos much better than we do. Let's not get too buried in details when Second Reality still goes chunk-chunk-chunk-chunk.


Agreed. I think it's because video address latching timing isn't perfect or the video update function isn't called exactly at vblank (and on VGA that's very fussy).

#83683 - 01/03/13 12:26 AM Re: PC/XT/AT (inside) WIP topic [Re: Kale]  
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Kale Offline
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This is how Number Nine S3 330 shows up in 16-bit true color (except that I've fixed the mouse pointer color after this snap). No idea about why everything seems drawn with a bad color ...

#83684 - 01/03/13 12:41 AM Re: PC/XT/AT (inside) WIP topic [Re: Kale]  
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Haze Offline
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well the icons are good, the text and taskbar (and start menu outline) seem to be drawing at the wrong bbp hence being half-width and broken colours.

I'd guess the behavior of one of the other accelerated functions should differ in 15/16bpp mode and is currently operating in 8bpp mode.

Last edited by Haze; 01/03/13 12:42 AM.
#83685 - 01/03/13 12:52 AM Re: PC/XT/AT (inside) WIP topic [Re: Kale]  
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Kale Offline
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8bpp mode is different too ...


#83686 - 01/03/13 02:11 AM Re: PC/XT/AT (inside) WIP topic [Re: Kale]  
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MikeAbson Offline
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At least for me anyway, in certain versions of Windows, will yield different results as far as the display goes, for example, I cannot get 256 colors in Windows 95A when setting the acceleration slider all the way to the right, however if I set the slider one notch from the left, the display works fine. This is using the S3 330 driver. I believe Barry was able to get 256 colours with the slider all the way to the right without problems in Windows 95B. In Windows 95C, I can only run in VGA mode no matter what I try. Obviously we don't all have different versions of Windows available, but changing the acceleration / using a different version of Windows might get 16-bit colour mode looking a bit better, or worse! ha.

#83691 - 01/03/13 09:31 AM Re: PC/XT/AT (inside) WIP topic [Re: Kale]  
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MikeAbson Offline
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I've been doing some testing with 16 bit colour here, and apparently the screenshot below is the Windows 95A desktop running at 640x480 in 16 million colours after setting the hardware acceleration to none, however I'm actually unconvinced. For instance, I was expecting the IE logo to look at more shaper with the lighter shades of blue, but it appears the same as it does in 256 colours. Same with the Cloud wallpaper (unless that was just a 256 colour bmp anyway). Perhaps the colour depth is lower by Windows when selecting no hardware acceleration even when running in 16 bit? I'll have to do some more testing to be sure Windows is really running in 16 bit.



Kale: In that above screenshot (8bpp) I have the same problem with setting hardware acceleration to either full or one notch below full in 256 colours. Previously when I did this, all I got a horrible mess, so there is a definite improvement here.

Edit: Just one more thing, in that first screenshot with the inside of the PC as the background, that's more or less the same problem I had when hardware acceleration was set to anything other than none in 16 bit colour mode.

Last edited by MikeAbson; 01/03/13 09:35 AM.
#83692 - 01/03/13 01:59 PM Re: PC/XT/AT (inside) WIP topic [Re: MikeAbson]  
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Darkstar Offline
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The icons in Win95 are still 16 colors (or 256?) ... IIRC to get high color icons you have to install either the plus pack or some power toy ... I don't really remember that well, but I do remember the low color icons smile

#83693 - 01/03/13 02:22 PM Re: PC/XT/AT (inside) WIP topic [Re: Kale]  
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Haze Offline
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yeah, even that 'inside PC' background is part of a the plus pack IIRC.

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