shaders innit

2025-10-23 17:43:57 +11:00
1 parent 7d8cdb8d6e
commit 177f7bbbba
@@ -0,0 +1,118 @@
+//https://www.shadertoy.com/view/ttVGDh
+Shader "Custom/Colourful Waves"
+{
+
+	Properties
+	{
+		_Speed("Color Speed" ,Range(0.0,1.0)) = 0.02
+		_WaveSpeed("Wave Speed" ,Range(-1.0,1.0)) = 0.1
+		_WavesNumber("Waves number" ,Range(0.1,20.0)) = 8.0
+
+		_ColorModifierX("Color modifier X",Range(0.0,2.0)) = 0.12
+		_ColorModifierY("Color modifier Y",Range(0.0,2.0)) = 0.2
+
+		_ColorPaletteA("Color Palette A", Color) = (0.5, 0.5, 0.5)
+		_ColorPaletteB("Color Palette B", Color) = (0.5, 0.5, 0.5)
+		_ColorPaletteC("Color Palette C", Color) = (2., 1., 0.)
+		_ColorPaletteD("Color Palette D", Color) = (0.5, 0.2, 0.25)
+	}
+
+	SubShader
+	{
+		Tags { "RenderType" = "Transparent" "Queue" = "Transparent" }
+
+		Pass
+		{
+			ZWrite Off
+			Blend SrcAlpha OneMinusSrcAlpha
+
+			CGPROGRAM
+			#pragma vertex vert
+			#pragma fragment frag
+
+			#include "UnityCG.cginc"
+
+			struct VertexInput 
+			{
+				fixed4 vertex : POSITION;
+				fixed2 uv:TEXCOORD0;
+			};
+
+			struct VertexOutput
+			 {
+				fixed4 pos : SV_POSITION;
+				fixed2 uv:TEXCOORD0;
+			};
+
+			fixed _Speed;
+			fixed _WaveSpeed;
+			int _WavesNumber;
+
+			fixed _ColorModifierX;
+			fixed _ColorModifierY;
+
+			fixed3 _ColorPaletteA;
+			fixed3 _ColorPaletteB;
+			fixed3 _ColorPaletteC;
+			fixed3 _ColorPaletteD;
+
+			#define PI 3.14159265359
+
+			fixed wavePosition(fixed2 uv, fixed i) 
+			{
+				return sin((uv.x + i * 8.456) * (sin(_Time.y * _WaveSpeed + 7.539 + i * 0.139) + 2.) * 0.5) * 0.65
+					+ sin(uv.x * (sin(_Time.y * _WaveSpeed + i * 0.2) + 2.) * 0.3) * 0.3
+					- (i - _WavesNumber / 2.) * 2. - uv.y;
+			}
+
+			// http://iquilezles.org/www/articles/palettes/palettes.htm
+			fixed3 colorPalette(fixed t, fixed3 a, fixed3 b, fixed3 c, fixed3 d) 
+			{
+				return a + b * cos(PI * 2. * (c * t + d));
+			}
+
+			fixed3 color(fixed x) 
+			{
+				return colorPalette(x, _ColorPaletteA, _ColorPaletteB, _ColorPaletteC, _ColorPaletteD);
+			}
+
+			VertexOutput vert (VertexInput v)
+			{
+				VertexOutput o;
+				o.pos = UnityObjectToClipPos (v.vertex);
+				o.uv = v.uv;
+				return o;
+			}
+			
+			fixed4 frag(VertexOutput i) : SV_Target
+			{
+			
+				fixed4 fragColor = 0;
+				fixed2 uv = i.uv;
+
+				fixed2 waveUv = (2.0 * i.uv - 1) / 1 * (_WavesNumber - 1.);
+
+				fixed aa = _WavesNumber * 2. / _ScreenParams.y;
+
+				for (fixed i = 0.; i < _WavesNumber; i++)
+				{
+					fixed waveTop = wavePosition(waveUv, i);
+					fixed waveBottom = wavePosition(waveUv, i + 1.);
+
+					fixed3 col = color(i * _ColorModifierX + uv.x * _ColorModifierY + _Time.y * _Speed);
+
+					col += smoothstep(0.3, 0., waveTop) * 0.05;
+					col += (1. - abs(0.5 - smoothstep(waveTop, waveBottom, 0.))) * 0.06;
+					col += smoothstep(-0.3, 0., waveBottom) * -0.05;
+
+					fragColor.xyz = lerp(fragColor.xyz, col, smoothstep(0., aa, waveTop));
+				
+				}
+				fragColor.w = 1.0;
+				return fragColor;
+			}
+			ENDCG
+			}
+	}
+}
+