SCAC

github： HopeVillage233/SCAC
release： Release 0.04 · HopeVillage233/SCAC

This is my first shader.So there may be many shortcomings.
I hope it can help you achieve perfectly restored and calibrated images with accurate details.
The following is the readme.SCAC -Screen Colour Automatic CalibrationSCAC (Screen Colour Automatic Calibration) is a ReShade shader for automatic screen color calibration, optimizing game display quality.FeaturesCore Features

• Automatic Color Calibration: Real-time screen analysis with automatic black and white level adjustment
• Screen Calibration Tools: Provides black and white level calibration patterns for manual calibration
• UI Filtering: Intelligently excludes UI elements from luminance statistics
• History Smoothing: Multiple history smoothing algorithms to prevent flickering

Advanced Features

• Custom Sampling Area: Supports full-screen or custom area sampling
• HDR/scRGB Support: Compatible with high dynamic range displays
• Debug View: Visualizes all reduction textures and historical data
• Real-time Statistics: Displays current frame's minimum/maximum luminance values

Installation

1. Ensure  ReShade  is installed
2. Copy the 

   SCAC.fx

    file to ReShade's Shaders directory
3. Enable ReShade in-game and add the SCAC effect

UsageBasic Settings

1. Enable Auto Calibration: Turn on "Enable Auto calibration" in the "Auto calibration" category
2. Adjust Limiters:
   • Min White Limiter: Prevents overly bright dim scenes (recommended: 0.95)
   • Max Black Limiter: Avoids calibrating grey as black (recommended: 0.10)

Screen Calibration

1. Black Level Calibration:
   • Select "Black Level Calibration" mode
   • Adjust the "Black Level" slider until the rectangle area becomes pure black
2. White Level Calibration:
   • Select "White Level Calibration" mode
   • Adjust the "White Level" slider until the rectangle area becomes pure white

UI Filtering

• Enable UI Filter: Excludes UI elements from luminance statistics
• Show Filter Effect: Visualizes filtered pixels (red=too bright, blue=too dark)
• Adjust Filter Thresholds: Modify dark and light filter thresholds based on UI brightness

Advanced Settings

• Sampling Area: Choose full-screen or custom area sampling
• History Smoothing Algorithm:
  • Off: No history smoothing
  • Preserve (Min/Max): Preserves historical extremes
  • Average (17-frame mean): 17-frame average smoothing
• Debug View: Enables display of all reduction textures and historical data

Technical DetailsHow It Works

1. Luminance Calculation: Uses 

   max(max(r,g),b)

    formula to calculate pixel luminance
2. Multi-level Reduction: Reduces 1024x1024 sampling to 1x1 statistics through 5 stages of 4x4 reduction
3. History Buffer: Uses 4x4 texture as a 16-frame circular buffer
4. Color Calibration: Maps original image to screen displayable range

Reduction PipelineTexture Usage

• TextureMip0-5: Multi-level reduction textures
• TextureMip4_History: 16-frame history buffer

Parameter DescriptionScreen Calibration

• Calibration View: Select calibration mode (Off/Black Level Calibration/White Level Calibration)
• Black Level: Black level calibration value
• White Level: White level calibration value

Auto Calibration

• Enable Auto calibration: Enable/disable automatic calibration
• Min White Limiter: Limits detected maximum raw brightness
• Max Black Limiter: Limits detected raw minimum brightness

UI Filtering

• Enable UI Filter: Enable/disable UI filtering
• Show Filter Effect: Display filtered pixels
• UI Filter Black Level: Threshold for filtering overly dark UI pixels
• UI Filter White Level: Threshold for filtering overly light UI pixels

Sampling

• Show Sampling Border: Display sampling area border
• Sampling Area: Select sampling area (Full Screen/Custom Area)
• Custom Area Center: Center position of custom sampling area
• Custom Area Size: Size of custom sampling area

Advanced Settings

• History Smoothing Algorithm: Select history smoothing algorithm
• Enable Debug View: Display all reduction textures

Version Historyv0.04 (2025/12/18)

• Added brightness extreme smoothing system
• Added UI filtering functionality
• Adjusted UI interface

v0.01 (2025/12/13)

• Initial version created

LicenseMIT License Copyright (C) 2025 灰灰蓝（This email address is being protected from spambots. You need JavaScript enabled to view it.）Contact

• Author: 灰灰蓝
• Email: This email address is being protected from spambots. You need JavaScript enabled to view it.
• WeChat: Rs200215

Notes

1. This shader aims to improve game visuals, but results may vary depending on the game and display
2. It's recommended to use calibration mode for manual calibration before enabling auto calibration
3. For HDR content, white level limits may need adjustment
4. If screen flickering occurs, try adjusting the history smoothing algorithm

ContributingIssues and improvement suggestions are welcome. Please ensure compliance with MIT license terms. 

Can't access the repo, and can't access the user associated with it either. With all the malware that ends up on GH, and usually funneled through popular domains/apps/etc... I get paranoid when I see this sort of thing - was the user and repo banned due to bad activities? You posted this within the last couple of days, so doubtful it went stale suddenly.

Bad link, maybe? A lot of typos in your post, so hopefully that's all it is! I was curious to check it out, so hoping this gets squared away.

It seems that my GitHub account has been smappy... Since I don't have a phone number outside of China, my repositories can now only be accessed by me. I will try to lift the ban and first try publishing on Google.

NEW GitHub page