Last active
April 17, 2018 10:13
-
-
Save yumayanagisawa/81c0156c36082ab7e184a9979d689f82 to your computer and use it in GitHub Desktop.
Saturation Filter for Unity3D
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| // This shader is hugely based on "saturation" by megaloler (https://www.shadertoy.com/view/XttGWB) | |
| Shader "Hidden/CustomColorGrading" | |
| { | |
| Properties | |
| { | |
| _MainTex ("Texture", 2D) = "white" {} | |
| _saturation("saturation value", Float) = 0.3 | |
| } | |
| SubShader | |
| { | |
| // No culling or depth | |
| Cull Off ZWrite Off ZTest Always | |
| Pass | |
| { | |
| CGPROGRAM | |
| #pragma vertex vert | |
| #pragma fragment frag | |
| #include "UnityCG.cginc" | |
| struct appdata | |
| { | |
| float4 vertex : POSITION; | |
| float2 uv : TEXCOORD0; | |
| }; | |
| struct v2f | |
| { | |
| float2 uv : TEXCOORD0; | |
| float4 vertex : SV_POSITION; | |
| }; | |
| v2f vert (appdata v) | |
| { | |
| v2f o; | |
| o.vertex = UnityObjectToClipPos(v.vertex); | |
| o.uv = v.uv; | |
| return o; | |
| } | |
| sampler2D _MainTex; | |
| float _saturation; | |
| float3 applySaturation(float3 col) { | |
| float saturationScale = 0.3; //_saturation; you could tweak the saturation value in the editor if you like | |
| float average = (col.x + col.y + col.z) / 3.0; | |
| float xd = average - col.x; | |
| float yd = average - col.y; | |
| float zd = average - col.z; | |
| col.x += xd * -saturationScale; | |
| col.y += yd * -saturationScale; | |
| col.z += zd * -saturationScale; | |
| return col; | |
| } | |
| fixed4 frag (v2f i) : SV_Target | |
| { | |
| fixed4 col = tex2D(_MainTex, i.uv); | |
| float3 saturatedColor = applySaturation(col.rgb); | |
| return fixed4(saturatedColor, 1.0); | |
| } | |
| ENDCG | |
| } | |
| } | |
| } |
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| using System.Collections; | |
| using System.Collections.Generic; | |
| using UnityEngine; | |
| public class PostEffectController : MonoBehaviour { | |
| public Material material; | |
| private void OnRenderImage(RenderTexture source, RenderTexture destination) | |
| { | |
| Graphics.Blit(source, destination, material); | |
| } | |
| } |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Attach PostEffectController.cs to the main camera