RetroArch Community Embraces CRT-Yah! and Sony Megatron Shader Updates

Shaders are the invisible hand that transforms the crisp, clinical output of modern emulation into something that breathes like the CRT screens these games were designed for, and the RetroArch community is in the middle of a productive wave of that work. CRT-Yah! and Sony Megatron variants have been gaining traction in the Libretro Forums and the central libretro/slang-shaders repository, drawing renewed attention to a corner of RetroArch that rewards obsessive pixel-peeping.

The momentum is visible in the "Showcase for RetroArch Shaders 2024" thread on the Libretro Forums, a multi-page post comparing standard shaders that ship with RetroArch, deliberately scoped to presets without bezels. The post uses a slider tool to set shader outputs side by side, with screenshot captions anchoring comparisons to specific test cases: King of Fighters 99 rendered at 1440p with nearest-crop scaling sits beside the same scene run through the crt-royale-ntsc-svideo-crop preset, letting readers see exactly what each chain does to scanlines, color bleed, and pixel edges.

The thread's author, addressed in replies as Jamirus, described the scope of the project directly: "It's the usual stuff with comparing screenshots and pixel peeping. Focus is on standard Shaders without bezels that come with RetroArch. On the last page (yes its multiple pages long this time) are shout outs to some popular community presets."

Community response to the showcase has been strongly positive. One contributor praised both the slider tool and the breadth of the comparisons: "Beautiful post, I had fun going through every page. Once again I love that slider that you use to compare shader images, looks amazing in action and thank you for the shot out to my presets and everyone else's on the last page. You even used my current favorite Sonic 2 screenie with the rainbow waterfall haha." That same reply put the showcase in historical perspective: "They represent more than a decade of community work."

CRT-Royale, one of the most established presets in the ecosystem, still has its advocates. "Yes, I pretty much use CRT-Royale still. Its actually pretty good," wrote one forum member who noted returning after a period of inactivity and finding "lot of improvements and changes in the community." The thread also surfaced a technical discussion around integer scaling, with one commenter flagging a specific paragraph in the post for review, prompting a back-and-forth clarification.

Several replies called for the showcase to reach a wider audience. "Very useful for new and 'not so new' users, hope it will be somehow made visible in Retroarch's blog and site/reddit!" one member wrote, reflecting a recurring tension in volunteer-driven communities between the depth of work being produced and its visibility on official channels. The new and updated CRT shader chains, including CRT-Yah! and Sony Megatron variants, continue to surface across RetroArch shader discussion channels and commit activity in the libretro/slang-shaders repository.