Changes

[[File:Sonkun megadrive.jpeg|thumb|298px|ntsc 2-phase preset Megadrive version]]A mix of basic crt attributes that invokes a nostalgic vibe with a modern twist, based on [https://forums.libretro.com/t/new-crt-shader-from-guest-crt-guest-advanced-updates/25444 @guest.r’s crt advanced hd and ntsc shader] combined with a variation of [https://forums.libretro.com/t/dogways-grading-shader-slang/27148/442 @Dogway’s grade shader]. 3 shader preset folders for 3 monitor types: 1080p, 1440p and 4k so whichever monitor you have, you can choose the right shader resolution for your monitor type. These presets were designed to be used on these three resolution types only. Not OLED, 720p or other random resolutions, if you use it on any type of display besides those 3 standard displays [http://forums.libretro.com/u/sonkun Sonkun] may not be able to help if you run into any issues. If they end up looking ok to you on your display regardless then game on. 64 shader presets to choose from per folder with 3 different phosphor types for USA, Japan and PAL that come in both color temp and multiple cable types to choose from included (representing 4 cable types to choose from: rf, composite, s-video and rgb and 3 composite types to choose from: standard, artifacts and Megadrive rainbow. Also S-Video presets includes [https://github.com/Hyllian Hyllian]’s “sgenpt-mix multpass” shader to take care of checkerboard dithering and lite vertical line dithering) Recommended to use with these shaders is rf/composite for all systems from the 4th generation consoles and below (nes, snes, genesis, atari, turbografx etc.), s-video for 5th and 6th generation consoles (ps1, saturn, n64, dreamcast, ps2, gamecube) and rgb for arcade. Also for NES cores Sonkun recommend changing the Palette setting. The two most popular cores are mesen and nestopia. For Mesen you should use the “Original Hardware (by FirebrandX)” setting, for Nestopia use the “NTSC hardware FBx” setting as Sonkun composite presets were designed with those pallets settings. Also with Mesen you should change both the top and bottom overscan settings to 8px to avoid harsh moire patterns on the screen. For Nintendo 64 mupen64plus-next core with Parallel-rdp settings enabled Sonkun also recommend changing the “crop overscan” setting to 8 to help reduce moire patterns that appear on the screen with that setting at default 0. ===[https://forums.libretro.com/t/mega-bezel-reflection-shader-feedback-and-updates/25512 HSM's Mega Bezel]===[[File:HSM's mega bezel - intro.gif|thumb|298px|HSM's mega bezel intro animation (Can be customized and turned off)]] The Mega Bezel Project started back in July 2019 when developer [http://forums.libretro.com/u/HyperspaceMadness HyperspaceMadness] was looking at experimental shaders creating real-time reflections on emulated display bezels. More than two years later, the swiss-army-knife of visual simulation to enhance the retro game experience is ready for players.<ref>[https://www.youtubelibretro.com/watch?vindex.php/retroarch-introducing-the-mega-bezel/ RetroArch – Introducing the Mega Bezel Reflection Shader]</ref> <small><div style="height:18em; width:500px; overflow:auto; border:2px solid black;">{| class="wikitable" style="text-align:center;"|-|* Auto-Generated Bezel around the tube area* Dynamic Reflections on the Bezel* Images can be added for background, LEDs, PVMs etc.* Easily scale the game screen, including integer scale* Crop edges of the the game image* Dual screen support for emulated systems like Nintendo 3DS (Emulated by Citra) or Nintendo DS (NDS)* And lots more* Also Runs on Xbox Series S, Xbox Series X and Steam Deck|}</div></small> ====Other notable presets for HSM project===vDcmPpDUZwA YouTuber Retro Crisis has made =These presets are tested and developed for use in conjunction with the HSM's Mega Bezel.[[File:Duimon's NGP-NGPC preset.jpeg|thumb|298px|Duimon's Neo Geo Pocket/Color preset]]*[https://forums.libretro.com/t/cyberlab-mega-bezel-death-to-pixels-shader-preset-pack/35606/1 CyberLab Mega Bezel Death To Pixels] ('''Includes HDR supported "Megatron 4K HDR presets" [[#External_Links|which is heavily recommended]] if you have a video showcasing SonkunHDR supported 4K display.''')*[https://forums.libretro.com/t/thenamec-mega-bezel-packs-amiga-commodore-64-vic20-crtgaming-soon/31523 TheNamec Mega Bezel Packs Amiga, Commodore 64, VIC20, CRTgaming]*[https://github.com/Duimon/Duimon-Mega-Bezel#installation-using-the-release-zip Duimon Mega Bezel Graphics]*[https://forums.libretro.com/t/zombs-mega-bezel-pack/39519 Zomb's Mega Bezel Pack]*[https://forums.libretro.com/t/soqueroeu-mega-bezel-tv-backgrounds/34301 SOQUEREU's Mega Bezel TV]*[https://forums.libretro.com/t/p3st-s-overlays-for-mega-bezel-shader-arcade-tv-s-and-more/39263 P3st´s Overlays for Mega Bezel] ===[https://forums.libretro.com/t/sony-megatron-colour-video-monitor/36109 Sony Megatron (HDR)]===These presets/shaders are intended to rely heavily on the [https://www.rtings.com/monitor/tests/picture-quality/peak-brightness#our-tests luminance performance]<of your display rather than the performance of your graphics card. As such you will need a bright display preferably DisplayHDR 600 but some SDR screens do get bright enough in particular laptop screens. A DisplayHDR 1000 display will really have the head room to cope with some of the hgher end PVM’s etc. ===[https://github.com/RetroCrisis/ref>Retro-Crisis-GDV-NTSC Retro-Crisis-GDV-NTSC]===It is based on Guest Advanced NTSC shader, which is authored by Guest R. All the presets were configured in sRGB at 4K display resolution on a 20" screen. Presets could potentially look worse on larger screens in some instances.

3 shader preset folders for 3 monitor types[[File: 1080p, 1440p and 4k so whichever Koko-aio-monitor you have, you can choose the right shader resolution for your monitor type-Commodore 1084S-Night. Disclaimer jpeg|thumb|298px|Koko- These presets were designed to be used on the three resolution types [http://forums.libretro.com/u/sonkun Sonkunaio's Commodore 1084S monitor (Night)] mentioned above only, not OLED, 720p or other random resolutions. If you use it on any type of display besides those 3 standard displays [http://forums.libretro.com/u/sonkun Sonkun] may not be able to help if you run into any issues. If they end up looking ok to you on your display regardless then game on.

64 ===[https://forums.libretro.com/t/koko-aio-shader presets -discussions-and-updates/38455 Koko-aio]===One of the main goal of this one is to choose from per folder be usable on integrated GPUs. Granted, don’t expect it to run on a Raspberry pi, but the actual target is Intel Haswell, the one on which [http://forums.libretro.com/u/kokoko3k kokoko3k] develop it, where it perform with all the features enabled, when dealing with 3 different phosphor types for USA240p content, Japan and Pal that come in both warmon 1080p at resolution ad about 85/90fps.

Multiple cable types Koko-aio is meant to choose frombe an all-in one package. It can be configured with many parameters, so that can be scaled to run on even on modest gpus while still developed to run with heavier presets on at least Haswell+ iGPUs (as in version 3.5, it reaches about 85fps with all features enabled When dealing with lowres content on 1920x1080 resolution). While it is not meant to simulate the internal behaviour of CRT displays, it aims to give users "visual" parameters to make their monitors look similar.

Included are shader presets representing 4 cable types to choose from<small><div style="height:25em; width:500px; overflow:auto; border:2px solid black;">{| class="wikitable" style="text-align: rfcenter;"! scope="col"|Features|-|* Scanlines* Screenlines* RGB phosphors* RGB deconvergence* NTSC/PAL CVBS color bleeding* Aperture grille and slot mask.* Input signal glowing* Output signal glowing* Blooming* Gamma, contrast, compositesaturation, s-video luminance, color temperature adjustments* Black frame insertions through alternate blanking* Interlace flickering, forcing and emulation* Antialiasing* Curvature* Ambient lights* Vignette and rgbSpotlight* Bezel (Thanks to [https://github.com/HyperspaceMadness/ HyperspaceMadness])* Background images* Full screen glowing* 3D rotation/tilt* Integer scaling* Background image Night mode* Support for backdrop images for BW game/CABs that use mirrors* NTSC emulation with selective artifacts smoothing* Temporal bloom* RF Noise* Dot matrix display emulation with grid, shadow and motion blur (gameboy mono)* Monochrome display “colorization”* TATE mode|}</div></small>

===[httphttps://forums.libretrogithub.com/uestefan3112/sonkun Sonkunkoko-aio-slang Koko-aio fork for Arcade Artwork] created two different types of rf/composite connections, one ===[[File:Estefan3112's Koko-aio fork for ntsc 2Arcade Artworks.png|thumb|298px|Koko-phase and one aio fork for Arcade Artwork with HDR]]Repository for ntsc 3game-phase. Most systems used specific Arcade Artworks by using the 2[[#Koko-phase output but a few systems used the 3aio|Koko-phase output as well. [http://forums.libretro.com/u/sonkun Sonkunaio]] created a list of the common retro systems on RetroArch to choose the right connection for the right systemslang presets.

<small>Systems that used Successfully tested under MacOS, Windows and iPadOS. Currently the ntsc 2[[#Koko-phase output:aio|Koko-aio]] presets provides superior performance on all reasonably powered desktops (including Macs), while providing enhanced shader functions, including bezel reflections, halo/glow effects and many more. It embeds game-specific artwork seamlessly and scales according to resolution. The [[#Koko-aio|koko-aio]] presets is currently under steady development, thus it is a clear aim to stay in line with the upstream changes.

*Amstrad GX4000*Atari 5200*Atari 7800*Atari Jaguar/CD*Commodore CDTV*Commodore Amgia CD32*Fairchild Channel F*Magnavox Odyssey Main source of this artwork comes from John Merrit, who set a benchmark for realistic arcade artwork. Version 0.2*Mattel Intellivision*Nintendo 64/DD*Nintendo GameCube*NEC PC Engineand following releases see the inclusion of some breathtaking 4K artwork provided by Ars Invictus as well. Release 0.3 contains 52 new game-specific presets. With release 0.4 (Turbo GrafxWIP), [https://github.com/estefan3112 estefan3112] would like to nightify all presets to the extent required. 0.4 release will also see usage of the new ambilight functionalities. See the list of new game presets in the each [https://github.com/estefan3112/CD*NEC SuperGrafx*Panasonic 3DO*Philips CDkoko-aio-i*SNK Neo Geo AES*SNK Neo Geo CD*Sega Megadrive(Genesis)slang/CD/32X*Sega Dreamcast*Sega Pico*Sega Saturn*Sony PlayStation*Sony PlayStation 2releases release notes].

*Atari 2600[https://forums.launchbox-app.com/profile/88501-mr-retrolust/content/?type=downloads_file&change_section=1 Mr. RetroLust's Lights Off]*ColecoVision[https://forums.libretro.com/t/4k-vertical-overlay-community-contributions/25247 ArsInvictus 4K Vertical Overlays]*Nintendo Famicom[https:/Nintendo Entertainment System*Sega Master System*Sega SG/retropie.org.uk/forum/topic/24427/my-realistic-arcade-overlays-for-retroarch-1000collection Orionsangel's Realistic Arcade Overlays]*Super Famicom::<small>[https://www.youtube.com/Super Nintendo Entertainment Systemwatch?v=kxalOc78xws Most of Orionsangel's bezels in one large pack (link in the description)]</small>

Only a few systems used the 3==[https://forums.libretro.com/t/back-ups-phase output but that output produced a different diagonal dithering colorarcade/artifact effect on the screen for those specific systems 40172 Back-Ups Arcade]==[[File:Maxresdefault.jpg|thumb|298px|Back-Ups Arcade's VS SMB overlay]]A [[Frontends|frontend]] that the 2-phase output didn’t showcase’s various overlays with HSM's shader preset and much more by [http://forums.libretro.com/u/sonkun SonkunBoz1978 Boz1978] wanted . He's aim was to recreate those outputs make a AIO software package that seamlessly transitions between game selection and game with these two types of ntsc shader presetsno ugly loading screens.

<small><div style="height:20em; width:500px; overflow:auto; border:2px solid black;">{| class="wikitable" style="text-align:center;"! scope="col"|Features|-|* Demo Screen: Informative intro video featuring the amazing [https://www.youtube.com/watch?v=PtZwqLoFgd8&t=8s Frank George]!* Custom Controllers: Per game Xbox controllers and control schemes.* Smoking Options: Choose your smoking preference.* Screen Saver: From the amazing [https://www.tasvisuals.com/ TAS Visuals].* Overlays: From [https://forums.launchbox-app.com/topic/52435-mr-retrolusts-mame-4k-lights-out-realistic-bezels/ Mr Retrolust], [https://forums.libretro.com/t/my-realistic-arcade-bezels/10604 Orion’s Angel], [https://forums.libretro.com/t/4k-vertical-overlay-community-contributions/25247 Arsinvictus] and [http://forums.libretro.com/u/sonkun SonkunBoz1978 Boz1978] himself.* Shaders: From Libretro’s very own amazing [[#HSM.27s_Mega_Bezel|HyperspaceMadness & HSM]] also created .* Music Player: Very awesome tracklist thanks to my works apprentice Mikey.* Music Player (In Game): Lets you play music or ambient arcade sounds while in-game!* Fade Screens: Each game has a rfmatching fade screen so you never leave your cab!* Loading Animations: Per game animated loading animations and sounds.* Animated Controllers: Based on the amazing [https://forums.libretro.com/t/composite ntsc 2super-nintendo-animated-border-phase preset strictly for Megadriveupdate/Genesis that recreates the accurate rainbow dithering effects so you have two options for rf38358 Fercho]’s animated overlays.|}</composite ditheringdiv></rainbows that you can choose from.small>

Back----Ups Arcade relies of three pieces of software to make it work:* Attract Mode Plus: The front end.* RetroArch: The back end.* RocketLauncher: The intermediary software used for game fades and pause menu.

'''For more information;'''{{Main|Frontend}} ==[https://reshade.me/#download ReShade]==ReShade is a '''generic post-processing injector''' for games and video software developed by [https://github.com/crosire crosire]. Similar to libretro, shader effects are saved with a special extension: ".fx", and again similar to libretro you can tweak them to fit your needs or create your own custom preset. '''For preset file location look for ReShade.ini and "CurrentPresetPath=", and it will tell you the location'''. Latest [[Duckstation]] release builds comes with [[PlayStation_emulators#Enhancements|ReShade .fx shader support]]. ====[https://github.com/MajorPainTheCactus/SonyMegatron-ReShade Sony Megatron ReShade Port (HDR)]====:For using this preset you need [[#Notable_shaders_for_using_with_ReShade_Presets|AutoHDR]] add-on for ReShade. ====[https://forums.libretro.com/t/cyberlab-mega-bezel-reflectiondeath-to-pixels-shader-feedbackpreset-and-updatespack/35606/648 CyberLab ReShade Death To Pixels Shader Preset Pack]==== ====[https://disk.yandex.ru/d/25512 HSMJO3NUIa0r1X45w Vasiliy.M.'s Mega BezelPCSX2 CRT]====:<small>[https://youtu.be/dpSi5yn2emY?t=18 Demonstration]</small> ====[Filehttps:HSM's mega bezel //github.com/frankschoeman/kyubus- introshader kyubus Retro CRT]====:<small>[https://www.youtube.gifcom/@kyubus7814/videos Demonstration]</small>::Kyubus Retro CRT is a collection of Reshade and RetroArch retro CRT presets using existing shaders such as [[CRT_shaders#CRT-Guest-Advanced|thumbCRT-Guest]], [[CRT_shaders#CRT-Royale|298pxCRT-Royale]] and [[CRT_shaders#CRT-Lottes|HSM's mega bezel intro animation CRT-Lottes]]. ::These presets are mainly developed on a monitor resolution of 1440p but presets for 1080p and 4k monitors are included.::To make the lower resolution shader display correctly RetroArch (Can or any emulator) integer scaling needs to be customized switched ON (Settings>video>scaling). GaussianBlur, LumaSharpen and Deband(range) are probably the first parameters you might want to adjust depending on the resolution of the content and your preferences. [https://github.com/frankschoeman frankschoeman] also recommend trying RetroArch shaders underneath such as "/xbr/super-xbr-fast.slangp"(Set Input and turned offOutput gamma to 1.0 in shader parameters)and "/cubic/catmull-rom-fast.slangp". In case those aren't available [https://github.com/frankschoeman frankschoeman]suggest setting the preset to one where GaussianBlur is enabled. ====[https://1drv.ms/u/s!Akfc1OCPWC-sg9BB3R1LG2SjK66Cvg?e=nxVGTe AirCon's Retro CRT]====:<small>[https://www.youtube.com/watch?v=wp_ha411BgY Demonstration]</small>::Mimics blurry, lightbleeding, uncalibrated inexpensive 8~90's CRT. ====Notable shaders for using with ReShade Presets====See [[Shaders_and_filters#Notable_ReShade_shaders|this section]].

* Auto-Generated Bezel around the tube area==Special K==* Dynamic Reflections on the Bezel* Images can be added for background, LEDs, PVMs :wink: etc* Easily scale the game screen, including integer scale* Crop edges of the the game image* Dual screen support for emulated systems like Nintendo 3DS (Emulated by Citra) or Nintendo DS (NDS)* And lots more See [https:slight_smile//www.pcgamingwiki.com/wiki/Special_K PCGamingWiki:* Also Runs on Xbox Series S, Xbox Series X and Steam DeckSpecial K page].

===<abbr title="These presets are tested and developed for use in conjunction with the HSM's Mega Bezel">HSM's Mega Bezel - Extra</abbr>=======[https://forums.libretrogithub.com/t/cyberlab-mega-bezel-death-to-pixels-shader-preset-packmausimus/35606ShaderGlass/1 CyberLab Mega Bezel Death To Pixelsreleases ShaderGlass]====[[File:ShaderGlass demonstration.png|thumb|298px|ShaderGlass demonstration]]Overlay for running GPU shaders on top of Windows desktop (similar to [[#WindowCast_for_Libretro|WindowCast for Libretro]]).

<small><div style="height:19em; width:900px; overflow:auto; border:2px solid black;">{| class="wikitable" style="text-align:center;"! scope="col"|[https://forums.libretrogithub.com/tmausimus/thenamecShaderGlass#features Features]|-mega|*applies shader effects on top of any window on the desktop*includes RetroArch shader library covering: CRT monitor simulation, image upscaling, TV / VHS simulation, softening, denoising, blur, sharpen and many more*works with most emulators, retro platforms and pixel art editors including: [[POS_(Pong_Consoles)_CPUs_and_Other_Chips#x86_CPUs|DOSBox forks]], [[xemu]], [[PCSX2]], [[FS-bezel-packs-amiga-commodore-64-vic20-crtgaming-soon/31523 TheNamec Mega Bezel Packs AmigaUAE]], Commodore 64[[Altirra]], VIC20[[ScummVM]], CRTgaming[[VICE]]====etc.*excellent companion for pixel art drawing showing shaded and/or aspect-ratio corrected preview*you can even use it on top of YouTube, Twitch or modern games*saving and loading profiles*multiple operating modes, including borderless fullscreen*can be captured by OBS (using Game Capture source)|}</div></small>

====[https[File://githubUsing VMware_and_WindowCast_libretro_core_with_Duimon_DOSBox_preset.comjpeg|thumb|298px|Using [[Windows_2000/DuimonXP/Duimon-Mega-BezelVista_emulators|VMware]] and [[#WindowCast_for_Libretro|WindowCast libretro core]] with [[#installation-using-the-release-zip Other_notable_presets_for_HSM_project|Duimon Mega Bezel GraphicsDOSBox preset]]]]====

====[https://forums.libretro.com/t/zombsofficial-release-megathread-bezelfor-packwindowcast-core/39519 Zomb40464 WindowCast for Libretro]==WindowCast for Libretro/libretro-wincapture (formerly WGC Window Capture) Libretro core to capture the contents of another window for video processing. This is useful, for say, capturing the output of a standalone emulator that doesn't have advanced pp shader implementation (like xemu, [[GameCube_emulators#Enhancements|Dolphin]], PCSX2[https://github.com/PCSX2/pcsx2/pull/7498#issue-1466652311 *]) or a PC game running in a window and then processing it with RetroArch's Mega Bezel Packshader stack. [[#WindowCast for Libretro|WindowCast for Libretro]], [[#ReShade|ReShade]] or [[#ShaderGlass|ShaderGlass]====] are the only decent way to do this if the emulator doesn't have any advanced pp shader implementation.

[[File:Librashader demonstration.png|thumb|298px148px|Librashader demonstration]]==[https://snowflakepowe.red/blog/introducing-librashader-2023-01-14/ Librashader]==Librashader is a complete reimplementation of the RetroArch slang shader pipeline that allows standalone emulators to easily and optionally implement support for RetroArch-style shaders and shader presets.

===This effort is a complete reimplementation of a shader pipeline that should be compatible with all shaders in [https://forums.libretrogithub.com/tlibretro/official-releaseslang-threadshaders slang-for-windowcast-core/40464 WindowCast for Libretroshaders]===WindowCast for Libretro/libretro-wincapture (formerly WGC Window Capture) Libretro core to capture , including the contents of another window for video processing. This is usefulpreset parser, for say, capturing the output of a standalone emulator (like xemu, Dolphin standalone, RPCS3 or PCSX2 nightlies) or a PC game running in a window and then processing it with RetroArch's shader stack. This core uses software blitpreprocessor, and should support running with any RetroArch video driver (vulkanSPIR-V translation, d3d11as well as runtime implementations for Direct3D 11, glOpenGL, etc)and Vulkan. HoweverTo be clear, librashader does not “rip out” the method used for window capture shader parts of RetroArch and just repackage it up, but is Windows 10a complete reimplementation with a [https:/11 specific and requires a Direct3D 10/11 capable GPUdocs. Audio or input is not handled, and it is expected rs/librashader/latest/librashader/ fully documented Rust API] that exposes every part of the game will be running in the backgroundpipeline.

===:You can find [https://snowflakepowegithub.redcom/blogSnowflakePowered/introducing-librashader-2023-01-14librashader on GitHub].:Reddit thread: [https://old.reddit.com/r/emulation/comments/17tgpqf/has_there_been_any_interest_in_librashader_support/ LibrashaderHas there been any interest in librashader support?]===::with v137 version, [[Ares]] emulator integrated librashader is a complete reimplementation of the RetroArch slang shader pipeline that allows standalone emulators support thanks to easily and optionally implement support for RetroArch[https://github.com/ares-style shaders and shader presetsemulator/ares/pull/1397 this pull request].

Already here thanks to Virtual Reality game room simulation projects. A VR game room simulation provides a simulated virtual [https://www.emuvr.net/wiki/Customization#Posters customizable] game room; within that room there are cartridges, CD/DVDs and VHS tapes with [https://docs.google.com/spreadsheets/d/1RdMTzZhVW811lTHfKmAZvux2Z_tLdwU4PazVHytpLXg/edit#gid=604246325 artworks(CD/DVD covers, cartridge/VHS labels etc.)], arcade machines, VCD/DVD/VHS player, personal computers or home consoles connected to ordinary 2d virtual CRT screens that the user can interact with as they would a real-life TV.

*[https://reshade.me/forum/shader-discussion/6140-reshade-shaders-repository-index Reshade Shaders Repository Index]*[https://thingsiplay.game.blog/2022/10/04/discovering-sonkuns-crt-guest-advanced-ntsc-slot-mask-presets/ thingsiplay's article on sonkun's preset pack]*[https://www.youtube.com/watch?v=OIagIphxSwg "Integrum Retro's video about " showcasing shader presets and overlays]*"Retro Crisis" showcasing [https://emulationwww.gametechwikiyoutube.com/indexwatch?v=vDcmPpDUZwA Sonkun's presets], [https://www.youtube.com/watch?v=rEcUOEK8j3c Sonkun's NEW presets with new guest.r shaders], [https://www.youtube.com/watch?v=qhjXeo6e44Q CyberLab's NEW version of CRT-Royale], [https://www.youtube.com/watch?v=VghduLw79-E CyberLab Megatron 4K HDR], [https://www.youtube.com/watch?v=yNmJ0n-QMCY CyberLab's NEW Megatron presets for Death To Pixels Shader preset packs], [https://www.youtube.com/watch?v=_oM1SCv48-E Retro-Crisis-GDV-NTSC NEW PlayStation presets] and podcasts with [https://www.youtube.com/watch?v=9jtpXtJbRps Hyperspace Madness - Creator of Mega Bezel] and [https://www.youtube.phpcom/Talkwatch?v=hu3mtPbfMTk CyberLab - Creator of Mega Bezel Death To Pixels Shader Preset Pack]*[https:Shaders_and_filters#Section_for_presets//forums.libretro.3F WIPcom/t/please-show-off-what-crt-shaders-can-do/19193?page=303 libretro forum: what crt shaders can do]