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Color Blindness Correction PostProcessing Effect for Unity.
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using System; | |
using UnityEngine; | |
using UnityEngine.Rendering.PostProcessing; | |
[Serializable] | |
[PostProcess(typeof(ColorBlindCorrectionRenderer), PostProcessEvent.AfterStack, "Custom/ColorBlindCorrection")] | |
public sealed class ColorBlindCorrection : PostProcessEffectSettings | |
{ | |
[Header("1:Protanopia 2:Deuteranopia 3:Tritanopia")] | |
[Range(0, 2)] | |
public IntParameter mode = new IntParameter() { value = 0 }; | |
} | |
public sealed class ColorBlindCorrectionRenderer : PostProcessEffectRenderer<ColorBlindCorrection> | |
{ | |
public override void Render(PostProcessRenderContext context) | |
{ | |
var sheet = context.propertySheets.Get(Shader.Find("Hidden/Custom/ColorBlindCorrection")); | |
context.command.BlitFullscreenTriangle(context.source, context.destination, sheet, settings.mode.value); | |
} | |
} |
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Shader "Hidden/Custom/ColorBlindCorrection" | |
{ | |
HLSLINCLUDE | |
#include "Packages/com.unity.postprocessing/PostProcessing/Shaders/StdLib.hlsl" | |
TEXTURE2D_SAMPLER2D(_MainTex, sampler_MainTex); | |
half3 LMS(half3 input) { | |
half3 lms = 0; | |
lms[0] = (17.8824 * input.r) + (43.5161 * input.g) + (4.11935 * input.b); | |
lms[1] = (3.45565 * input.r) + (27.1554 * input.g) + (3.86714 * input.b); | |
lms[2] = (0.0299566 * input.r) + (0.184309 * input.g) + (1.46709 * input.b); | |
return lms; | |
} | |
half3 Correction(float3 input, float3 dlms) { | |
half3 err = 0; | |
err.r = (0.0809444479 * dlms[0]) + (-0.130504409 * dlms[1]) + (0.116721066 * dlms[2]); | |
err.g = (-0.0102485335 * dlms[0]) + (0.0540193266 * dlms[1]) + (-0.113614708 * dlms[2]); | |
err.b = (-0.000365296938 * dlms[0]) + (-0.00412161469 * dlms[1]) + (0.693511405 * dlms[2]); | |
err = (input - err); | |
float3 correction = 0; | |
correction.g = (err.r * 0.7) + (err.g * 1.0); | |
correction.b = (err.r * 0.7) + (err.b * 1.0); | |
return input + correction; | |
} | |
half4 FragProtanopia(VaryingsDefault i) : SV_Target | |
{ | |
half4 input = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, i.texcoord); | |
half3 lms = LMS(input.rgb); | |
float3 dlms = 0; | |
dlms[0] = 0.0 * lms[0] + 2.02344 * lms[1] + -2.52581 * lms[2]; | |
dlms[1] = 0.0 * lms[0] + 1.0 * lms[1] + 0.0 * lms[2]; | |
dlms[2] = 0.0 * lms[0] + 0.0 * lms[1] + 1.0 * lms[2]; | |
return half4(Correction(input, dlms), input.a); | |
} | |
half4 FragDeuteranopia(VaryingsDefault i) : SV_Target | |
{ | |
half4 input = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, i.texcoord); | |
half3 lms = LMS(input.rgb); | |
float3 dlms = 0; | |
dlms[0] = 1.0 * lms[0] + 0.0 * lms[1] + 0.0 * lms[2]; | |
dlms[1] = 0.494207 * lms[0] + 0.0 * lms[1] + 1.24827 * lms[2]; | |
dlms[2] = 0.0 * lms[0] + 0.0 * lms[1] + 1.0 * lms[2]; | |
return half4(Correction(input, dlms), input.a); | |
} | |
half4 FragTritanopia(VaryingsDefault i) : SV_Target | |
{ | |
half4 input = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, i.texcoord); | |
half3 lms = LMS(input.rgb); | |
float3 dlms = 0; | |
dlms[0] = 1.0 * lms[0] + 0.0 * lms[1] + 0.0 * lms[2]; | |
dlms[1] = 0.0 * lms[0] + 1.0 * lms[1] + 0.0 * lms[2]; | |
dlms[2] = -0.395913 * lms[0] + 0.801109 * lms[1] + 0.0 * lms[2]; | |
return half4(Correction(input, dlms), input.a); | |
} | |
ENDHLSL | |
SubShader | |
{ | |
Cull Off ZWrite Off ZTest Always | |
Pass | |
{ | |
HLSLPROGRAM | |
#pragma vertex VertDefault | |
#pragma fragment FragProtanopia | |
ENDHLSL | |
} | |
Pass | |
{ | |
HLSLPROGRAM | |
#pragma vertex VertDefault | |
#pragma fragment FragDeuteranopia | |
ENDHLSL | |
} | |
Pass | |
{ | |
HLSLPROGRAM | |
#pragma vertex VertDefault | |
#pragma fragment FragTritanopia | |
ENDHLSL | |
} | |
} | |
} |
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Hey, can you please explain how to use your scripts?
I am a novice developer and have never come across anything like it.
Thank you in advance.