Changes

*[https://github.com/libretro/commonslang-shaders/blob/master/crt/shaders/crt-geom.cg slang crt-geom.cgslang]*[https://github.com/libretro/commonslang-shaders/blob/master/crt/shaders/crt-cgwg-fast.cg slang crt-cgwg-fast.slang]*[https://github.com/libretro/slang-shaders/tree/master/crt/shaders/geom-deluxe crt-geom-cgdeluxe]

Simulates A very versatile and modifiable shader that simulates an aperture grille display (with the dot mask enabled). Very versatile and modifiable. One of the first popular CRT shaders. The deluxe version adds more features, including more mask types. Visit the main article for more details.

[[File:crt-easymode.png|thumb|298px|CRT-Easymode, with default settings at 1080p (view original for full details)]]*[https://github.com/libretro/commonslang-shaders/blob/master/crt/shaders/crt-easymode.cg slang crt-easymode.cgslang]*[https://github.com/libretro/commonslang-shaders/tree/master/crt/shaders/crt-easymode-halation crt-easymode-halation] A fast, relatively simple CRT shader with easy-to-understand settings. Similar to CRT-Geom in its effects.       

*[https://github.com/libretro/commonslang-shaders/blobtree/master/crt/shaders/crt-hyllian.cg crt-hyllian.cg]*[https://githubforums.libretro.com/libretro/common-shaders/blob/master/crt/shaderst/crt-hyllian-fast.cg crtand-hyllianits-fast.cgvariants/38137 Hyllian's shader development thread]

Aims only for picture quality, so it avoids things that degrade the image just for accuracy. It, however, uses far less power to runthan most other CRT shaders, so it is possible to run this shader on lower end systems than CRT-Geom.

Another versionRecently, crtafter a long period of inactivity, Hyllian has restarted shader development anew, releasing all-new versions of this shader under heavy inspiration from CRT-hyllianGuest-lqAdvanced and others.cg is specifically aimed They can be acquired at even lower end systemshis thread on the libretro forums, linked above.

[[File:crt-lottes-multipass.png|thumb|298px|CRT-Lottes-Multipass, with default settings at 1080p (view original for full details)]]*[https://github.com/libretro/commonslang-shaders/blob/master/crt/shaders/crt-lottes.cg slang crt-lottes.cgslang]*[https://github.com/libretro/commonslang-shaders/blob/master/crt/shaders/crt-lottes-halationfast.cg slang crt-lottes-halationfast.cgslang]*[https://github.com/libretro/slang-shaders/tree/master/crt/shaders/crt-lottes-multipass crt-lottes-multipass]

A newer CRT shader that uses a horizontal shadow mask pattern with blooming. The horizontal pattern works quite well at current resolutions1080p, though it isn't entirely accurate to a true vertical slot mask pattern. The multipass version adds scanline bloom and a few other features.

[[File:GTU.png|thumb|298px|GTU, with default settings at 1080p (view original for full details)]]*[https://github.com/libretro/commonslang-shaders/tree/master/crt/shaders/gtu-v050 GTUv050 Cgslang]

*[https://github.com/libretro/commonslang-shaders/tree/master/crtnes_raw_palette/shaders/GTUgtu-famicom GTU-Famicom Cgslang]

[[File:CRTcrt-Royaleroyale.png|thumb|298px|CRT-Royale, with default settings at 1080p (view original for full details)]] *[https://github.com/libretro/slang-shaders/tree/master/crt/shaders/crt-royale CRT-Royale]*[https://github.com/libretro/slang-shaders/blob/master/presets/crt-royale-kurozumi.slangp CRT-Royale-Kurozumi] A highly advanced multi-pass CRT shader that simulates almost every aspect of the CRT screen. There are tons of parameters to configure, such as phosphor type (aperture grille, slot mask, and EDP shadow mask) and size (i.e. dot pitch), convergence offsets, scanline blooming and many others. Higher resolution is better for this shader, especially with EDP shadow mask phosphor layout and with smaller phosphor dot pitch values. This shader is really complicated compared to most other CRT shaders, reading the README and the documentation in the user-settings.h is a must. CRT-Royale-Kurozumi is a preconfigured CRT-Royale made to look like a professional CRT monitor, specifically Sony's PVM/BVM line of monitors.     

This CRT-Guest-Dr-Venom is quite possibly the most advanced, featureprecursor to CRT-Guest-rich CRT shader of allAdvanced. It has just as if not more parameters to configure than CRT-Royale while being more optimized, and if greater speed is desired, there are several faster versions availablenow considered mostly obsolete, as well it is not as variants that add other neat features such feature-filled as NTSC emulation Guest's newest shaders and better support for games that render at 480p or higher. It is also still has even been superseded in active development and continues to regularly gain features and optimizationsspeed by the faster Advanced presets. Take heedAs such, however: it should only be used if your device is also one of the only unable to load slang shaders without a central public Github repo, as its developer it has opted for release bundles linked to in recently been removed from the libretro forums instead. While RetroArch does host slang shader repository but remains available as a version of it in their glsl shader repos, it is highly outdated, so it is recommended to update it using though the latest release from slang version can still be acquired in the developerfirst post of Guest's dedicated libretro forum thread, linked above.     ----

This shader is quite unique among CRT shaders, and shaders in general. It is currently the only shader that takes advantage of HDR support for greater color depth and brightness, allowing for highly accurate CRT emulation on HDR-capable displays, though it is also usable on regular SDR displaysthrough a parameter change. Unlike other CRT shaders, its inner workings are actually fairly simple and it doesn't have many bells and whistles, focusing mainly on drawing scanlines and accurate phosphor masks as well as color correction, which coincidentally also makes it one of the fastest shaders featured on this page. As it is primarily meant for use on bright HDR-capable displays, it draws phosphor masks at full strength with no attempt at mitigating the resulting loss in brightness through parameters such as bloom, glow or mask strength typically seen in other CRT shaders, instead counting on the display to make up for it. On an SDR display, it is highly recommended to use it with the backlight turned up all the way, as otherwise the image will likely be too dim to view comfortably. There are presets emulating various CRT models and types, including several PVM models, certain arcade displays, and even PC monitors.