RetroArch nnedi3 Shader Presets: Source-Based Overview of Available Variants

The official libretro documentation page for nnedi3 shaders in RetroArch is short. It contains a Background heading with no body text, a Preview Image section, and a series of bullet points naming shader presets alongside reference images. The page does not include installation instructions, configuration steps, requirements, performance data, or compatibility notes. This guide summarizes what the page actually contains, so readers know what to expect before looking for more detailed resources elsewhere.

Documented shader preset names

The documentation page lists the following presets in its Preview Image section. Each name is followed by a preview image reference in the source document.

• nnedi3-nns16-2x-luma
• nnedi3-nns16-2x-rgb
• nnedi3-nns16-4x-luma
• nnedi3-nns32-2x-rgb-nns32-4x-luma
• nnedi3-nns32-4x-rgb
• nnedi3-nns64-2x-nns32-4x-nns16-8x-rgb
• nnedi3-nns64-2x-nns32-4x-rgb

Observed naming pattern

Based on the listed names, the presets appear to follow a naming convention that combines a neural network size (such as nns16, nns32, or nns64), a scaling multiplier (2x, 4x, or 8x), and a channel target (luma or rgb). Some presets chain multiple stages, for example nnedi3-nns64-2x-nns32-4x-nns16-8x-rgb, which combines three network sizes and three multipliers in a single preset name. This naming pattern is a descriptive observation of the documented list, not an explanation provided by the source page itself.

What the documentation page does not include

• No prerequisites are listed.
• No installation or download steps are provided.
• No configuration settings or menu paths are described.
• No limitations, compatibility notes, or performance metrics are given.
• No troubleshooting information is present.
• The Background section has no body text.

All shader preset names listed in this article come from the official libretro documentation page for nnedi3. No other sources were used, and no claims were added beyond what that page contains.