Very cool! 
Another thing I think is nice is the downscale blur that guest put in, combined with the scalefx it adds just a nice edge of antialiasing-like softness to the edges
Standard Preset with no blur
Standard Preset with Downsample blur on both x and y
Yeah, basically you should make a simple preset where you add the lines to define the images you want.
A simple preset is where you have a #reference line at the top pointing to the preset to load. After this you have lines which set parameter values and set texture paths.
For an example of this take a look at the night preset in the variations folder, it sets a background image. To get the names of possible background images look in the base preset.
To get Retroarch to create a simple preset for you just load the base preset then make parameter changes you want then save with “Simple Presets” on. Then you can add your texture paths by hand.
I’m the future in going to try to add choosing textures within retroarch
Here’s the documentation for presets including Simple Presets
@HyperspaceMadness I was wondering if you plan on adding an NTSC composite shader? I saw some parameters that mention composite but they don’t seem to have the effect that something like crt royale composite has. For example, removing dithering, like the waterfalls in sonic the hedgehog. I know there are other options to removing dithering in the parameters but they can cause artifacts sometimes.
yeah I just wish there were a solution for white pixels. Basically anything that is white turns grey if it’s close to any other color. Maybe some kind of mask?
Possibly, the composite that is in the current shader is from GTU which does some of the color smearing.
I did have ntsc adaptive set up to work with it (which is what the royale preset uses), but I haven’t used it in a while, I’m curious to see what Guest and Tatsua79 settle on as their happy place to see what I should add to the Mega Bezel.
Thank you very mych !! I just tried it and it’s really, really good. Might use it as my new general preset.
Newpixie’s rolling scanline shader is even better than the previous shader I mentionned in DKC2 :
But there is indeed an issue with the black color, as you can see in the second screenshot (the issue is solved in @passballtotucker’s preset).
@Tromzy. this is fantastic! I’ve been looking for an ideal preset for these games for a while. Could you share your preset?
As I mentionned in my post, it’s just Newpixie’s Rolling shader that you can find in the “Experimental” folder in HyperSpaceMadness’ shader pack. That, or passballtotucker’s preset that he shared a few posts above (and for which you will need Duimon’s shader presets).
Hi @soqueroeu 
it’s the following, set both of these to 100:
Scanline Dir Downsample Blur
Opposite Dir Downsample Blur
I’m also putting a preset with this in the next update 
There is a significant improvement. Compare:
Scanline Dir Downsample Blur: 0.00
Opposite Dir Downsample Blur: 0.00
Scanline Dir Downsample Blur: 100.00
Opposite Dir Downsample Blur: 100.00
Now an extra tweak here:
Scanline Dir Downsample Blur: 100.00
Opposite Dir Downsample Blur: 100.00
Scanline Dir Multiplier (X-Prescale for H Scanline): 150.00
Note: For all cases GT ON was 0.00.
Can you tell if this extra tweak would be harmful in any game? Because I thought it was much better that way for games like DKC.
By the way, I notice there are some artifacts on the edges of Diddy (lighter textures), but that’s not because tweaks done now. It seems to be something with Guest Dr Venom shader preset:
Mega Bezel is updated to V 0.9.019 2021-06-23
Changes:
Here’s a shot of the standard settings
Here’s a shot of the Smoothed-ScaleFX_Antialias.slangp preset
Here’s an example of the downrezing and sharpening
Here’s the original
Downrezed to 480p
Sharpened to bring back contrast
Downrezed to 240p
Same but with no display
Sharpened
Hey @HyperspaceMadness, I noticed that you also abbreviated Guest DR Venom to GDV. Did I have load failures due to this?
EDIT: Forget it, I messed up the file type during bulk replacement on notepad++
Hi. I was wondering if you’ve tried the Standard or Advanced versions with the DosBox Pure core. Retroarch closes the game when I attempt to use them. It does work with Basic Reflect though. I’m trying to determine if it’s my system or not. Thanks!
Hmm, I haven’t tried this no.
My guess is it’s related to image size.
Try seeing if the STANDARD HD-CORE preset works (in the Base_CRT_Presets folder) this one doesn’t have the upscale in the middle of the chain.
That one works. Thx! This shader is the best especially playing on an arcade cabinet!
Could it be the same issue as the one I have with Flycast ? If the resolution in Flycast is too high, the Standard and Advanced shaders crash RA, but the HD-Core versions work.
Cool! What kind of cabinet do you have set up?
I recently got an AtGames Legends Ultimate cabinet on sale. I use their software and the BYOG feature to stream my desktop to the cabinet. Then I load up BigBox and run my games using your Mega Bezel shader and Duimon’s amazing artwork presets. Throw in Retro Achievements and presto! Incredible retro gaming experience!
And now thanks to the DOSBox Pure core, I can even play the eXoDOS collection. Monkey Island, Space Quest, Quake, Doom - on a cabinet with shaders?! Madness! 
Next up is to get a couple of light guns modified by RPEG Electronics with the GUN4IR system by JayBee Game Labs.
