Scanlines or NO scanlines?

[Retro-Nerd]

Yes, the LCD/TFT dilemma. I know. Lowres Games = CRT FTW!!!

[Dan Locke]

Now that I know how to do it, I use (at double resolution) a combination of 20% scanline transparency, 0% scanline level, 5:4 pixel aspect ratio, and bilinear filtering. It's beautiful.

[Dunny]

Regarding the Bilinear filtering:

What I do is a two-stage filtering system. First, use a nearest-neighbour algorithm to scale to the nearest integer scaling. For example, if you're running at say, 800x600 and your "screen" is 320x256 then you'd scale to 640x512. This will render with nice sharp pixels.

Then you scale up (or down) from there to 800x600. The pixels still appear sharp, but the minimal bilinear filtering applied smooths out the jaggies without blurring.

If you've got a current copy of zxspin, you can see this option working if you select Direct3D rendering and "reduce filter blurring" in the display options/effects tab. The only drawbacks are a very slight performance hit and the increased video-ram usage due to the intermediate stage.

D.

[john4p]

Originally Posted by Maren

"Beta 7:

- added support for D3D mask/overlay image files (config file only, gfx_filter_mask=<path>) Automatically tiled if image is smaller than display size, uses D3DX function to load image files, .bmp, .dds, .dib, .hdr, .jpg, .pfm, .png, .ppm, and .tga supported (this was requested somewhere in req.UAE Wishlist long time ago or something..)"

You might want to check WinUAE's beta thread for extra info

Does someone have an "RGB Triads"-like overlay (png) just to see how that looks like with Amiga games?

[Dunny]

Originally Posted by john4p

Does someone have an "RGB Triads"-like overlay (png) just to see how that looks like with Amiga games?

http://sites.google.com/site/pauldunn/ZXSpinPOV3.rar

This is the current zip file of ZXSpin. Don't bother with the emulator, it's pretty buggy at the moment. However, there is a folder in there called "overlays" which contains loads of them that you can try with WinUAE.

D.

[john4p]

Thanks - but there's only an .exe-file in the archive which doesn't start here (Vista). Needs some DLL.

[Dunny]

Originally Posted by john4p

Thanks - but there's only an .exe-file in the archive which doesn't start here (Vista). Needs some DLL.

whoops. Sorry about that

http://sites.google.com/site/pauldunn/ZXSpin_07s.zip

Try that instead. It's the full distribution of ZXSpin. Again, it's only being rewritten so just grab the overlays and leave the emulator alone.

D.

[john4p]

Thanks. Looks pretty good:


(rgb.png)


(rgb2.png)


(rgb3.png)

I still slightly prefer the 25% scanlines...


P.S. Maybe with an option "gfx_filter_mask_transparency" the new overlay-feature would be useful.

[john4p]

Well, this one does look good:


(aperture1x2rb_Aaron.png)

[Dunny]

You need to be using a much higher resolution

D.

[galu]

How is the mask/overlay thing in WinUAE implemented? I'm asking here before posting to the WinUAE.prb board
Shouldn't the overlay supposed to be overlayed on the top of the filtered image?

I can't set it up - with or without filtering, with or without autoscaling, in Lores, Hires and Superhires.
I'm getting this with any of the filters enabled:

http://jo.galu.info/download/wuar1.png
http://jo.galu.info/download/wuar3.png

And something like this (the mask is distorted) in windowed modes w/o filtering (quickstart config):

[Dunny]

Looks like your gfx card isn't tiling properly. The overlay should be applied after the image is scaled up to your chosen resolution, and not scaled at all - just tiled across the whole screen at 1:1 mapping.

I'd say that in all likelihood it's your card at fault rather than WinUAE, but I've been wrong before ;-)

D.

[LocalH]

What I would like to see is:

1) Scanlines that are thinner than the actual rasters, with a little bit of vertical "bloom" on the rasters - probably requires minimum 3x original size to do properly
2) Horizontal softening only (since CRT TVs do not have razor sharp pixels, but soft transitions between pixels), and generally rasters don't bleed into each other like pixels on the same raster, due to the scanlines)

[mcbpete]

Originally Posted by Retro-Nerd

If you use a Beta, just tick der Direct3D option in the filter Tab.

Sorry for the bump but I've just upgraded to 2.3.0 and I've lost the ability to use these 'prettier' scanlines as discussed on the last page (i.e.. Scanline transparency-25, scanline level-0). What's the equivalent of the Direct3D tick box on the new build ?

What happens on my system is both of the scanline levels sliders no longer seem to have any effect over the final image when WinUAE is booted. Other than that WinUAE works perfectly - I just quite liked the effect of the TV-esque look I managed to get with 2.2

[MazinKaesar]

Scanlines are evil!!!! >___<

[mcbpete]

Originally Posted by MazinKaesar

Scanlines are evil!!!! >___<

I thought that two but john4p converted me with this 'finding' - http://eab.abime.net/showpost.php?p=...&postcount=405 (and this: http://eab.abime.net/showpost.php?p=...&postcount=407 )

[roberthazelby]

Scanlines on a real Amiga/console etc look absolutely fantastic, but I find that emulated scanlines often look poor in comparison.

[Amiga1992]

Well, I was an advocate of REAL scanlines (not emulated ones), but now that I have a fully up-scanned display, I am getting used to no scanlines and it's not bad

So, no scanlines!

[Radertified]

After seeing the scanline discussion in the "Heart of Darkness - Amiga port possible?" thread, I've decided to throw my hat in the ring.

No scanlines here! I'll scanline your face if you disagree!

[Foebane]

I don't get this damned obsession with scanlines.

I remember using my A500 on various displays, and I never, EVER saw scanlines as an intrinsic part of the Amiga graphics AT ALL, or indeed anything shown on CRTs back when I used them, because I knew that scanlines were a shortcoming of CRTs in the way they worked, they were less pronounced in interlace, and even then I was damned if I was going to integrate a shortcoming like that into my Amiga experience.