RetroArch ntsc Shader Documentation: Source-Based Overview

The libretro documentation repository hosts an official page titled "ntsc" that covers the RetroArch ntsc shader family. As published, the page presents a Background heading, a Preview Image section, and a list of shader variants with associated preview images. It does not include installation steps, menu paths, configuration settings, prerequisites or statements about compatibility and limitations.

Shader variants listed on the page

• ntsc
• mame-ntsc
• ntsc-256px-gauss-scanline
• ntsc-256px-svideo-gauss-scanline
• ntsc-256px-svideo
• ntsc-256px
• ntsc-320px-gauss-scanline
• ntsc-320px-svideo-gauss-scanline
• ntsc-320px-svideo
• ntsc-320px
• ntsc-svideo
• ntsc-vcr

The names indicate two groups based on horizontal resolution (256px and 320px) and several suffixes, including gauss-scanline and svideo, plus standalone entries such as mame-ntsc and ntsc-vcr. The source page itself provides no explanation of what these suffixes or groupings mean, so their intended behavior is not documented here.

Within the Preview Image section, each listed variant is paired with a corresponding preview image file in the documentation's image directory. These previews are visual references only; the page does not describe their capture conditions or how they map to specific games or displays.

What the page does not document

The ntsc page as published does not specify installation steps, shader load order, menu navigation in RetroArch, prerequisites, configuration options, performance impact, compatibility with specific cores or hardware, or troubleshooting outcomes. Any of those details would need to come from another source and are not asserted here.