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.

===CRT-CalagariCaligari===*[https://github.com/libretro/commonslang-shaders/blob/master/crt/shaders/crt-caligari.cg slang crt-calagaricaligari.cgslang]

An older CRT shader similar to CRT-Geom but that uses different methods to achieve its effects.

*[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 flat fast, relatively simple CRT shader whose settings are easier with easy-to -understandsettings. 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.

*[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.

*[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]

*[https://github.com/libretro/commonslang-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 offestsoffsets, 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.

===CRT-Guest-Advanced===*[https://githubforums.libretro.com/libretrot/commonnew-shaders/blob/master/cgp/crt-royaleshader-from-guest-crt-kurozumi.cgp CRTguest-Royaleadvanced-Kurozumiupdates/25444 Guest's shader development thread]

A preconfigured This is quite possibly the most advanced, feature-rich CRT shader of all. It has just as many if not more parameters to configure than CRT-Royale made while being more optimized, and if greater speed is desired, there are several faster versions available, as well as variants that add other neat features such as NTSC emulation and better support for games that render at 480p or higher. It is also still in active development and continues to look like regularly gain features and optimizations. Take heed, however: it is also one of the only shaders without a professional CRT monitorcentral public Github repo, as its developer has opted for release bundles linked to in the libretro forums instead. While RetroArch does host a version of it in their shader repos, it is highly outdated, specifically Sonyso it is recommended to update it using the latest release from the developer's PVM/BVM line of monitorsdedicated libretro forum thread, linked above.

===CRT-Guest-AdvancedDr-Venom===*[https://forums.libretrogithub.com/tlibretro/newslang-shaders/tree/master/crt/shaders/guest/crt-shader-from-guestgdv-new crt-guest-advanceddr-updates/25444 Guest's shader development threadvenom]

This The precursor to CRT-Guest-Advanced. While it is quite possibly the most advanced, now considered outdated and not as feature-rich CRT shader of all. It has just filled as if not more parameters to configure than CRT-Royale while being more optimizedGuest's newest shaders, and if greater speed it is desiredmuch faster, there are several faster versions availablemore so than even the fastest Advanced preset, as well as variants that add other neat features such as NTSC emulation and better support for games that render at 480p or higher. It is also it still in active development and continues has plenty of things to tweak to regularly gain features and optimizationsdeliver a pleasing image. Take heed, however: it is also one It therefore fills a middle-of -the only -road niche among CRT shaders without a central public Github repo, as its developer has opted for release bundles linked to in the libretro forums instead. While RetroArch does host delivering a version nice balance of it in their shader repos, it is highly outdated, so it is recommended to update it using the latest release from the developer's dedicated libretro forum thread, linked abovefeatures and performance.

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.