Purescale

Purescale is a client-side mod that gives you more FPS through upscaling and frame generation. It runs on pretty much any GPU.

The idea is simple. It renders the game at a lower resolution and then rebuilds it back up to full res, so you keep most of the sharpness for a fraction of the cost. The HUD and menus stay at native resolution, so text and inventory icons are still crisp. You get to pick which upscaler you want, from AMD's FSR1 all the way to real NVIDIA DLSS if you're on an RTX card. It helps the most when your GPU is the bottleneck, like at high resolutions or with shaders and path tracing.

There's also frame generation. It takes two rendered frames and fills in the frames in between them, which makes motion look smoother even when your CPU can't keep up. No RTX or tensor cores needed for this part. It works on any GPU that can run Minecraft, and it plays fine with shaderpacks.

Upscalers

• XAIS 2 ULTRA (default) and XAIS 1, my own temporal reconstruction
• AMD FSR1 (EASU + RCAS)
• XeSS-Style and NIS-Style
• DLAA, for anti-aliasing at native res without dropping resolution
• Sharpen Only, just RCAS sharpening and nothing else
• Nearest, Bilinear and Bicubic for the cheap simple filters
• NVIDIA DLSS on RTX cards (falls back to XAIS 2 if it can't run)

Controls

• F6 - turn Purescale on and off
• F7 - cycle quality
• F8 - FPS and stats overlay
• F9 - settings
• B - A/B compare against native
• C - hold to peek at the native image

Settings

You can change the upscaler and quality (or set a custom render scale), sharpening, the frame gen multiplier, and a bunch of extra knobs like history strength, ghost reduction, motion-adaptive resolution, FXAA and frame pacing.

Notes

• Upscaling mainly helps when you're GPU-bound.
• Frame gen runs one real frame behind, so there's a little extra input latency. Fast-moving mobs or your hand can ghost a bit.
• DLSS needs an RTX card with recent drivers. On anything else it just uses XAIS 2 instead.