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Re: Atari 800 choplifter Golden Child #120658 03/27/22 01:02 PM
Joined: Feb 2014 Posts: 931 Likes: 77 G Golden Child OP Senior Member
OP Golden Child Senior Member G Joined: Feb 2014 Posts: 931 Likes: 77	Experimenting with a800 choplifter
	1 member likes this: Reuental

Re: Atari 800 choplifter Golden Child #120659 03/27/22 01:56 PM
Joined: Feb 2014 Posts: 931 Likes: 77 G Golden Child OP Senior Member
OP Golden Child Senior Member G Joined: Feb 2014 Posts: 931 Likes: 77	Can't remember if I tried these before: Ulysses and golden fleece: setting A and B to 0.0 and phase pixel clock to 2.0 makes the triangle blue and seems to get rid of the banding trying Ultima also Castle Wolfenstein uses artifact colors Last edited by Golden Child; 03/27/22 06:49 PM.
	1 member likes this: Dullaron

Re: Atari 800 choplifter Golden Child #120662 03/29/22 08:22 AM
Joined: Apr 2006 Posts: 770 Likes: 2 Fort Worth, TX. D Dullaron Senior Member
Dullaron Senior Member D Joined: Apr 2006 Posts: 770 Likes: 2 Fort Worth, TX.	I like the bright lines and the bright colors. Windows 10 Home 64-bit / AMD Radeon RX 5700 XT / AMD Ryzen 7 3700X 8-Core 3.59 GHz / RAM 16 GB

Re: Atari 800 choplifter Dullaron #120663 03/29/22 12:40 PM
Joined: Feb 2014 Posts: 931 Likes: 77 G Golden Child OP Senior Member
OP Golden Child Senior Member G Joined: Feb 2014 Posts: 931 Likes: 77	Yes, the white shadow mask is better looking. I wanted to change the scanline duration in finer increments and it took me awhile to find out which file to change: Code grep 'uration' -r src src/osd/modules/render/d3d/d3dhlsl.cpp: { "NTSC Scanline Duration (uSec)", 0, 52600, 100000, 1, SLIDER_FLOAT, SLIDER_SCREEN_TYPE_LCD_OR_RASTER, SLIDER_NTSC_SCAN_TIME, 0.001f, "%1.3f", {} }, Code grep uration -r bgfx bgfx/chains/hlsl.json: { "type": "float", "name": "scan_time", "text": "NTSC Scanline Duration (uSec)", "default": 52.60, "max": 150.00, "min": 1.00, "step": 0.1, "format": "%3.1f", "screen": "raster" }, After changing the value in d3dhlsl, running a recompile and it not having any effect, I realized that's because I'm using ubuntu which doesn't use d3d. The value to change for ubuntu is in bgfx/chains/hlsl.json. So we just add another digit with step .01 instead of step .1 and change the displayed format from %3.1f to %3.2f Code --- a/src/osd/modules/render/d3d/d3dhlsl.cpp +++ b/src/osd/modules/render/d3d/d3dhlsl.cpp { "NTSC Scanline Duration (uSec)", 0, 5260, 10000, 1, SLIDER_FLOAT, SLIDER_SCREEN_TYPE_LCD_OR_RASTER, SLIDER_NTSC_SCAN_TIME, 0.01f, "%1.2f", {} }, + { "NTSC Scanline Duration (uSec)", 0, 52600, 100000, 1, SLIDER_FLOAT, SLIDER_SCREEN_TYPE_LCD_OR_RASTER, SLIDER_NTSC_SCAN_TIME, 0.001f, "%1.3f", {} }, --- a/bgfx/chains/hlsl.json +++ b/bgfx/chains/hlsl.json - { "type": "float", "name": "scan_time", "text": "NTSC Scanline Duration (uSec)", "default": 52.60, "max": 150.00, "min": 1.00, "step": 0.1, "format": "%3.1f", "screen": "raster" }, + { "type": "float", "name": "scan_time", "text": "NTSC Scanline Duration (uSec)", "default": 39.60, "max": 150.00, "min": 1.00, "step": 0.01, "format": "%3.2f", "screen": "raster" }, I also figured out a pretty good workaround for the UI covering up the entire screen. Just use two screens (-numscreens 2) and window mode (-window) and set the second window to be the same as screen 0. (If you only have one screen, they all default to the same screen). That also allows me to make the second screen's window much smaller to speed up processing. I wonder if the hlsl could be sped up by processing at the resolution of the driver and then upscaled. So for example the apple ii driver would process at 560x384 and then get upscaled to fit the window. Apple II example: Code 100 HGR : FOR C = 0 TO 7 : HCOLOR = C : FOR Y = C * 20 TO (C+1)*20 : HPLOT 0,Y TO 279,Y : NEXT : NEXT regular mame driver output monochrome + hlsl Note the scanline duration is now 39.09 (with an additional digit of precision) It'd be cool if the slider would allow you change it in a step size of 1 or 10 or 100 by possibly holding down the 2 key for tens and 3 key for hundreds.

Re: Atari 800 choplifter Golden Child #120664 03/29/22 01:35 PM
Joined: May 2009 Posts: 2,119 Likes: 152 J Just Desserts Very Senior Member
Just Desserts Very Senior Member J Joined: May 2009 Posts: 2,119 Likes: 152	Originally Posted by Golden Child I wonder if the hlsl could be sped up by processing at the resolution of the driver and then upscaled. So for example the apple ii driver would process at 560x384 and then get upscaled to fit the window. You just described how it already works. That's how it already works. The effects that can be run at the guest resolution are already run at the guest resolution. When dealing with passes like scanlines and the shadow mask, you need as much resolution as possible for a pleasing output, so it runs at the host resolution instead.

Re: Atari 800 choplifter Golden Child #120666 03/29/22 03:01 PM
Joined: May 2010 Posts: 46 Likes: 1 R Reuental Member
Reuental Member R Joined: May 2010 Posts: 46 Likes: 1	Originally Posted by Golden Child Experimenting with a800 choplifter I had also had a go at it yesterday before looking at this thread and got David's Midnight Magic to look alright (well I guess in the ballpark), but had problems with Ultima III. Some other titles that use artifacting (in limited ways) are 221 Bakerstreet and Mr. Do. For Bakerstreet, someone over at the atariage forums provided a shot from real hardware (XL, a pain that the models output differently) some years ago Last edited by Reuental; 03/29/22 03:18 PM.

Re: Atari 800 choplifter Reuental #120667 03/30/22 12:32 PM
Joined: Feb 2014 Posts: 931 Likes: 77 G Golden Child OP Senior Member
OP Golden Child Senior Member G Joined: Feb 2014 Posts: 931 Likes: 77	A little Atari Basic program to make some artifacts for calibration: seems like scanline duration is around 46.93 Mr Do has artifact colors at the top and the bottom of the screen. I don't know if those colors are right, it seems that green and purple should be exchanged. I couldn't get 221b to run.

Re: Atari 800 choplifter Golden Child #120668 03/30/22 01:44 PM
Joined: May 2015 Posts: 44 Location M mixmaster Member
mixmaster Member M Joined: May 2015 Posts: 44 Location	Seems that purple and green should be exchanged. "Three days? That's tomorrow, we better get going!"

Re: Atari 800 choplifter Golden Child #120777 04/20/22 01:42 AM
Joined: Feb 2014 Posts: 931 Likes: 77 G Golden Child OP Senior Member
OP Golden Child Senior Member G Joined: Feb 2014 Posts: 931 Likes: 77	Found a really great game, called "Pondering about Max's". This is a really clever platform game and it runs under the a800xl driver. It's actually a combination of 3 different games, 2 platform games called "The Dream" and "P.A.M.", and beat-em-up called "Barroom Brawl". Strangely though in mame's a800xl driver, you can't move laterally on the vertical pipes on the second level of "The Dream". I can still finish all the levels in "The Dream". Good fun but really difficult. Supposedly, there's supposed to be a secret on level 1, the clue is "Make the right moves on level 1 of the dream to create PM Madness"... I can jump down onto the billiard balls from the platform above. I think it must have something to do with the banner possibly. I tried jumping on top of the Eggle to jump up to the banner. Who knows, maybe the secret doesn't work on emulators but on real hardware. Shortcut on level 7 of the dream, just jump on top of the Eggle in the upper right and use him as a springboard. Longplay on youtube:

Re: Atari 800 choplifter Golden Child #120779 04/20/22 01:55 AM
Joined: Oct 2020 Posts: 23 Likes: 3 MrBogi Member
MrBogi Member Joined: Oct 2020 Posts: 23 Likes: 3	Gotta love the dance the buggles do Maybe the code in the foot steps on level 4 is a list of the right moves Last edited by MrBogi; 04/20/22 01:59 AM.

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