100 lines
4.2 KiB
GLSL
100 lines
4.2 KiB
GLSL
Shader "Hidden/Custom/CRT"
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{
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SubShader
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{
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Cull Off ZWrite Off ZTest Always
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Pass
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{
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HLSLPROGRAM
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const float PI = 3.14159265;
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#pragma vertex VertDefault
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#pragma fragment Frag
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#include "Packages/com.unity.postprocessing/PostProcessing/Shaders/StdLib.hlsl"
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float rand(float2 st) {
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return frac(sin(dot(st.xy, float2(12.9898, 78.233))) * 43758.5453);
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}
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float2 random2(float2 st){
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st = float2( dot(st,float2(127.1,311.7)),
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dot(st,float2(269.5,183.3)) );
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return -1.0 + 2.0*frac(sin(st)*43758.5453123);
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}
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float perlinNoise(float2 st)
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{
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float2 p = floor(st);
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float2 f = frac(st);
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float2 u = f*f*(3.0-2.0*f);
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float v00 = random2(p+float2(0,0));
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float v10 = random2(p+float2(1,0));
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float v01 = random2(p+float2(0,1));
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float v11 = random2(p+float2(1,1));
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return lerp( lerp( dot( v00, f - float2(0,0) ), dot( v10, f - float2(1,0) ), u.x ),
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lerp( dot( v01, f - float2(0,1) ), dot( v11, f - float2(1,1) ), u.x ),
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u.y)+0.5f;
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}
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TEXTURE2D_SAMPLER2D(_MainTex, sampler_MainTex);
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float _Distort;
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float _ScreenWidth;
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float _ScreenHeight;
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float _RGBBlend;
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float _BottomCollapse;
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float _NoiseAmount;
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float4 Frag(VaryingsDefault i) : SV_Target
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{
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//レンズ歪み
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float2 distcoord = i.texcoord;
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distcoord -= 0.5;
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distcoord /= 1 - length(distcoord) * _Distort;
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distcoord += 0.5;
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//画面のズレ
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float2 linecoord = distcoord;
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//linecoord.x += (sin(_Time.r * 1.5 + linecoord.y * 0.7) > 0.9) * 0.05;
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float linedistsin = sin(_Time.g + linecoord.y * 2 * PI);
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float linedistwidth = 0.995;
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linecoord.x += (linedistsin > linedistwidth) * (linedistsin - linedistwidth);
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linecoord.x += (sin(_Time.a * 100 + linecoord.y * 10)) * 0.0005;
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//下部の圧縮された部分
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linecoord.x -= (linecoord.y < _BottomCollapse) * rand(float2(_Time.a,linecoord.y)) * 0.1;
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linecoord.y = linecoord.y < _BottomCollapse ? linecoord.y * (1 / _BottomCollapse) : linecoord.y;
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//rgbずれ
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float4 color;
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color.r = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, linecoord + float2(0.002,0)).r ;
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color.g = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, linecoord + float2(0,0)).g;
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color.b = SAMPLE_TEXTURE2D(_MainTex, sampler_MainTex, linecoord + float2(-0.002,0)).b;
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//下部のノイズ
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float noisevalue = perlinNoise(linecoord * float2(5,500) + rand(_Time) + _Time.ba);
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float noiseCrit = (1 - _NoiseAmount) + max(linecoord.y - _BottomCollapse, linecoord.y < _BottomCollapse) * 2;
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color.r = (noisevalue > noiseCrit) ? rand(linecoord + float2(0,1)) : color.r;
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color.g = (noisevalue > noiseCrit) ? rand(linecoord + float2(1,2)) : color.g;
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color.b = (noisevalue > noiseCrit) ? rand(linecoord + float2(3,4)) : color.b;
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//rgb配列
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float rgbmod = fmod((i.texcoord.x) * _ScreenWidth, 3);
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color.r *= max(rgbmod < 1, _RGBBlend);
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color.g *= max(1 < rgbmod && rgbmod < 2, _RGBBlend);
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color.b *= max(2 < rgbmod, _RGBBlend);
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rgbmod = fmod((i.texcoord.y) * _ScreenHeight, 4);
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color.rgb *= rgbmod >= 1;
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//レンズ歪みの外側
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color.rgb *= 1 - (distcoord.x < 0 || distcoord.x > 1 || distcoord.y < 0 || distcoord.y > 1);
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return color;
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}
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ENDHLSL
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}
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}
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} |