Introduction

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What is X-Frame FPS Accelerator?

X-Frame FPS Accelerator is a camera-based performance optimization tool for Unity that improves frame rates by rendering at reduced resolution and intelligently upscaling the result. It combines adaptive downsampling with dynamic quality management to maintain a target FPS on any device.

Pipeline support: X-Frame works with Built-in, URP, and HDRP render pipelines. Unity 2022.3 or later required.

How It Works

X-Frame operates in two stages:

Reduced-resolution rendering — the camera renders to a smaller off-screen surface, which also accelerates any post-processing effects.
Intelligent upscaling — the frame is upscaled to full screen size with optional MSAA antialiasing and a custom sharpening algorithm for better quality than basic bilinear upscale.

Key Features

Adaptive Downsampling

Target FPS — set your desired frame rate; X-Frame dynamically adjusts resolution to maintain it.
Quality Range — define minimum and maximum quality to control the trade-off between FPS and image quality.
Static Camera Quality — use higher quality when the camera is not moving.
Nice FPS Mode — temporarily disable downsampling when performance is already excellent.

Dynamic Quality Management

Shadow Management — automatically reduce shadow quality or disable shadows per light when FPS drops.
Pixel Light Reduction — dynamically reduce pixel light count to save GPU cycles.
LOD Bias Control — adjust LOD switching distances to reduce triangle count.

Rendering Options

Sharpening — counteract downsampling blur with a fast sharpen pass.
MSAA Antialiasing — internal MSAA for the downsampled frame (independent of project settings).
Multiple compositing methods — Billboard World Space (recommended) or Blit-based.
FPS Counter — built-in on-screen FPS display with quality level indicator.

Target Use Cases

X-Frame is primarily aimed at:

Mobile devices — high-DPI screens where resolution reduction is imperceptible.
Performance-critical scenes — run heavy post-processing on devices that otherwise cannot handle it.
Wider device reach — make your game playable on hardware below minimum specs.

Important: Always test X-Frame on the target mobile device itself. Desktop monitors have much lower DPI, so quality reduction is more noticeable on a big screen than on a phone.

Requirements

Requirement	Details
Unity version	2022.3 LTS or later
Render pipeline	Built-in, URP, or HDRP
Platform	All platforms (optimized for mobile)

Next Steps

Get started with the Quick Start guide, or explore the full Settings reference for all configurable parameters.

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