lenia: optimise shader & move files

Assets/automata/Automata.unity

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Assets/automata/Lenia.meta

@@ -0,0 +1,8 @@
+fileFormatVersion: 2
+guid: 9c5428b31e4ba7d119181b96ce168f1a
+folderAsset: yes
+DefaultImporter:
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Assets/automata/Lenia/lenia.shader

@@ -0,0 +1,189 @@
+Shader "CrispyPin/Lenia"
+{
+	Properties
+	{
+		_LastFrame ("Texture", 2D) = "white" {}
+		// _Radius ("Radius", Range(1,100)) = 10
+		_GrowtCenter ("Growth fn center (mu)", Range(0, 1)) = 0.2
+		_GrowthWidth ("Growth fn width (sigma / std deviation)", Range(0, 1)) = 0.07
+		// _KSharpness ("Kernel sharpness", Range(1, 100)) = 2
+		// _KOffset ("Kernel offset", Range(0, 1)) = 0.2
+		_Speed ("Speed factor", Range(0.001, 0.5)) = 0.1
+	}
+	SubShader
+	{
+		Tags { "RenderType"="Opaque" }
+		LOD 100
+
+		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;
+			};
+
+			sampler2D _LastFrame;
+			// int _Radius;
+			float _GrowtCenter;
+			float _GrowthWidth;
+			// float _KSharpness;
+			// float _KOffset;
+			float _Speed;
+
+			v2f vert (appdata v)
+			{
+				v2f o;
+				o.vertex = UnityObjectToClipPos(v.vertex);
+				o.uv = v.uv;
+
+				return o;
+			}
+
+
+			float kernel(float p) {
+				float r = p / 8.0;
+				float k_sharpness=28;
+				float k_offset =0.435;
+				return exp(-((r - k_offset) * (r - k_offset)) * k_sharpness);
+				// float r = p / _Radius;
+				// // -- normal
+				// return exp(-((r - _KOffset)*(r - _KOffset)) * _KSharpness);
+
+				// -- example from the lenia paper
+				// if (r >= 1) return 0;
+				// const float alpha = 4;
+				// return exp(alpha - alpha/(4.0 * r * (1.0 - r)));
+			}
+
+			inline float activation(float neighbors) {
+				// return old_state * (neighbors > 2 && neighbors < 5) +
+				// ((1 - old_state) * neighbors == 3);
+
+				// const float sharpness = 1000.0;
+				// float x = neighbors - _GrowtCenter;
+				// return exp(-(x*x) * _GrowthWidth) * 2.0 - 1.0;
+				const float mu = _GrowtCenter;
+				const float sigma = _GrowthWidth;
+				const float u = neighbors;
+				return exp(-((u-mu) * (u-mu)) / (2 * sigma * sigma)) * 2.0 - 1.0;
+			}
+
+
+
+			inline half value(float2 center, float x, float y) {
+				return tex2D(_LastFrame, center + float2(x, y)).r;
+			}
+
+			fixed4 frag (v2f i) : SV_Target
+			{
+				if(_ProjectionParams.z > 1) discard;
+
+				const float resolution = 512.0;
+				const float d = 1.0 / resolution;
+				// generated by the rust program
+				const int Radius = 16;
+// /*
+				#define RADIUS 16
+				// kernel LUT size is 544 bytes
+				const half Kernel[17][16] = {
+					{0.0205, 0.0678, 0.1799, 0.3835, 0.6569, 0.9041, 0.9998, 0.8884, 0.6343, 0.3639, 0.1678, 0.0621, 0.0185, 0.0044, 0.0009, 0.0001, },
+					{0.0346, 0.0871, 0.2065, 0.4147, 0.6847, 0.9193, 0.9987, 0.8756, 0.6186, 0.3520, 0.1611, 0.0593, 0.0176, 0.0042, 0.0008, 0.0001, },
+					{0.0871, 0.1546, 0.2921, 0.5082, 0.7624, 0.9568, 0.9889, 0.8345, 0.5721, 0.3177, 0.1425, 0.0516, 0.0151, 0.0035, 0.0007, 0.0001, },
+					{0.2065, 0.2921, 0.4459, 0.6569, 0.8699, 0.9931, 0.9541, 0.7600, 0.4974, 0.2659, 0.1156, 0.0407, 0.0116, 0.0027, 0.0005, 0.0001, },
+					{0.4147, 0.5082, 0.6569, 0.8305, 0.9667, 0.9931, 0.8756, 0.6501, 0.4014, 0.2043, 0.0852, 0.0290, 0.0080, 0.0018, 0.0003, 0.0000, },
+					{0.6847, 0.7624, 0.8699, 0.9667, 0.9987, 0.9240, 0.7445, 0.5120, 0.2961, 0.1425, 0.0567, 0.0185, 0.0049, 0.0011, 0.0002, 0.0000, },
+					{0.9193, 0.9568, 0.9931, 0.9931, 0.9240, 0.7753, 0.5721, 0.3639, 0.1966, 0.0891, 0.0336, 0.0105, 0.0027, 0.0006, 0.0001, 0.0000, },
+					{0.9987, 0.9889, 0.9541, 0.8756, 0.7445, 0.5721, 0.3887, 0.2292, 0.1156, 0.0493, 0.0176, 0.0052, 0.0013, 0.0003, 0.0000, 0.0000, },
+					{0.8756, 0.8345, 0.7600, 0.6501, 0.5120, 0.3639, 0.2292, 0.1258, 0.0593, 0.0238, 0.0080, 0.0023, 0.0005, 0.0001, 0.0000, 0.0000, },
+					{0.6186, 0.5721, 0.4974, 0.4014, 0.2961, 0.1966, 0.1156, 0.0593, 0.0263, 0.0099, 0.0032, 0.0009, 0.0002, 0.0000, 0.0000, 0.0000, },
+					{0.3520, 0.3177, 0.2659, 0.2043, 0.1425, 0.0891, 0.0493, 0.0238, 0.0099, 0.0035, 0.0011, 0.0003, 0.0001, 0.0000, 0.0000, 0.0000, },
+					{0.1611, 0.1425, 0.1156, 0.0852, 0.0567, 0.0336, 0.0176, 0.0080, 0.0032, 0.0011, 0.0003, 0.0001, 0.0000, 0.0000, 0.0000, 0.0000, },
+					{0.0593, 0.0516, 0.0407, 0.0290, 0.0185, 0.0105, 0.0052, 0.0023, 0.0009, 0.0003, 0.0001, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, },
+					{0.0176, 0.0151, 0.0116, 0.0080, 0.0049, 0.0027, 0.0013, 0.0005, 0.0002, 0.0001, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, },
+					{0.0042, 0.0035, 0.0027, 0.0018, 0.0011, 0.0006, 0.0003, 0.0001, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, },
+					{0.0008, 0.0007, 0.0005, 0.0003, 0.0002, 0.0001, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, },
+					{0.0001, 0.0001, 0.0001, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, 0.0000, },
+				};
+				const float total_max = 234.37535;
+
+				float total = 0.0;
+				[unroll(RADIUS)]
+				for (int y = 0; y < Radius; y++) {
+					[unroll(RADIUS)]
+					for (int x = 1; x <= Radius; x++) {
+						const float xx = (float)x * d;
+						const float yy = (float)y * d;
+						total += value(i.uv, xx, yy) * Kernel[y][x-1];
+						total += value(i.uv, -yy, xx) * Kernel[y][x-1];
+						total += value(i.uv, -xx, -yy) * Kernel[y][x-1];
+						total += value(i.uv, yy, -xx) * Kernel[y][x-1];
+					}
+				}
+				// */
+				/*
+				float total_max = 0;
+				float total = 0;
+				for (int x = -Radius; x <= Radius; x++) {
+					for (int y = -Radius; y <= Radius; y++) {
+						float dist = sqrt(x*x+y*y);
+						float kval = kernel(dist);
+						total_max += kval;
+						total += value(i.uv, x*d, y*d) * kval;
+					}
+				}
+				// */
+				float old_state = value(i.uv, 0.0, 0.0) ;
+				float count = total / total_max;
+
+				float state = activation(count) * _Speed + old_state;
+				state = clamp(state, 0, 1);
+
+				// // kernel visualization: lookup table
+				// float k = 0;
+				// {
+				// 	float2 p = (i.uv - 0.5 ) * resolution;
+				// 	p = floor(p);
+				// 	if (p.x > 0 && p.y >= 0) {
+				// 		k = Kernel[p.y][p.x-1];
+				// 	} else if (p.x <= 0 && p.y > 0) {
+				// 		k = Kernel[-p.x][p.y-1];
+				// 	} else if (p.x < 0 && p.y <= 0) {
+				// 		k = Kernel[-p.y][-p.x-1];
+				// 	} else if (p.x >= 0 && p.y < 0) {
+				// 		k = Kernel[p.x][-p.y-1];
+				// 	}
+				// }
+
+				// float2 p = (i.uv - 0.5) * resolution;
+				// float k = kernel(length(p)) * (max(abs(p.x), abs(p.y)) <= _Radius); // kernel visualisation: real size
+				// float k = kernel(length(i.uv - 0.5) * _Radius * 2); // kernel visualisation: fill square
+
+				// float a = activation(i.uv.x);
+				// float4 col = float4(state, k, a, 1);
+				// float4 col = float4(state, k, k2, 1);
+
+				// float4 col = float4(state, state * 0.5, 0, 1);
+				// float4 col = float4(state, i.uv.x * state, i.uv.y * state, 1);
+
+				float4 col = state;
+				col.a = 1;
+				return col;
+			}
+			ENDCG
+		}
+	}
+}

Assets/automata/Lenia/lenia_out.mat

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Assets/automata/Lenia/lenia_out.mat.meta

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Assets/automata/Lenia/lenia_rt.renderTexture

@@ -13,8 +13,8 @@ RenderTexture:
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+  m_Width: 512
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+  m_Height: 512
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Assets/automata/Lenia/lenia_sim.mat

@@ -7,7 +7,7 @@ Material:
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   m_PrefabInstance: {fileID: 0}
   m_PrefabAsset: {fileID: 0}
-  m_Name: lenia
+  m_Name: lenia_sim
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Assets/automata/lenia.shader

@@ -1,141 +0,0 @@
-Shader "CrispyPin/Lenia"
-{
-	Properties
-	{
-		_LastFrame ("Texture", 2D) = "white" {}
-		_Radius ("Radius", Range(1,100)) = 10
-		_GrowtCenter ("Growth fn center (mu)", Range(0, 1)) = 0.2
-		_GrowthWidth ("Growth fn width (sigma / std deviation)", Range(0, 1)) = 0.07
-		_KSharpness ("Kernel sharpness", Range(1, 100)) = 2
-		_KOffset ("Kernel offset", Range(0, 1)) = 0.2
-		_Speed ("Speed factor", Range(0.001, 1)) = 0.1
-	}
-	SubShader
-	{
-		Tags { "RenderType"="Opaque" }
-		LOD 100
-
-		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;
-			};
-
-			sampler2D _LastFrame;
-			int _Radius;
-			float _GrowtCenter;
-			float _GrowthWidth;
-			float _KSharpness;
-			float _KOffset;
-			float _Speed;
-
-			v2f vert (appdata v)
-			{
-				v2f o;
-				o.vertex = UnityObjectToClipPos(v.vertex);
-				o.uv = v.uv;
-
-				return o;
-			}
-
-
-			float kernel(float p) {
-				float r = p / _Radius;
-
-				// -- example from the lenia paper
-				// if (r >= 1) return 0;
-				// const float alpha = 4;
-				// return exp(alpha - alpha/(4.0 * r * (1.0 - r)));
-
-				// -- forgor
-				// return exp(-((r-0.5)*(r-0.5))*25);
-
-				// -- circle :)
-				// return r < 1 && r > 0.2;
-
-				// -- adjustable hard circle
-				// float a = _KOffset+_KSharpness;
-				// float b =_KOffset -_KSharpness;
-				// return r < a && r > b;
-
-				// -- normal
-				return exp(-((r - _KOffset)*(r - _KOffset)) * _KSharpness);
-			}
-
-			float activation(float neighbors) {
-				// return old_state * (neighbors > 2 && neighbors < 5) +
-				// ((1 - old_state) * neighbors == 3);
-
-				// const float sharpness = 1000.0;
-				// float x = neighbors - _GrowtCenter;
-				// return exp(-(x*x) * _GrowthWidth) * 2.0 - 1.0;
-				float mu = _GrowtCenter;
-				float sigma = _GrowthWidth;
-				float u = neighbors;
-
-				// float u = neighbors - _GrowtCenter;
-
-				return exp(-((u-mu) * (u-mu)) / (2 * sigma * sigma)) * 2.0 - 1.0;
-			}
-
-			half value(float2 center, float x, float y) {
-				return tex2D(_LastFrame, center + float2(x, y)).r;
-			}
-
-
-			fixed4 frag (v2f i) : SV_Target
-			{
-				const float resolution = 256.0;
-				const float d = 1.0 / resolution;
-
-				float total_max = 0.0; // TODO replace with const?
-				float total = 0.0;
-
-				for (int x = -_Radius; x <= _Radius; x++) {
-					for (int y = -_Radius; y <= _Radius; y++) {
-						float dist = sqrt(x*x+y*y);
-						float kval = kernel(dist);
-						total_max += kval;
-						total += value(i.uv, x*d, y*d) * kval;
-					}
-				}
-
-				float old_state = value(i.uv, 0.0, 0.0) ;
-				float count = total / total_max;
-
-				float state = activation(count) * _Speed + old_state;
-				state = clamp(state, 0, 1);
-
-
-				// float2 p = (i.uv - 0.5) * resolution;
-				// float k = kernel(length(p)) * (max(abs(p.x), abs(p.y)) <= _Radius); // kernel visualisation: real size
-				// // float k = kernel(length(i.uv - 0.5) * _Radius * 2); // kernel visualisation: fill square
-				// float a = activation(i.uv.x);
-				// float4 col = float4(state, k, a, 1);
-
-				// float4 col = float4(state, state * 0.5, 0, 1);
-				float4 col = float4(state, i.uv.x * state, i.uv.y * state, 1);
-
-				// float4 col = state;
-				// col.a = 1;
-				return col;
-			}
-			ENDCG
-		}
-	}
-}

Assets/editor_garbage/UnlimitFPS.cs

@@ -0,0 +1,20 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+
+public class UnlimitFPS : MonoBehaviour
+{
+	// Start is called before the first frame update
+	void Start()
+	{
+		Application.targetFrameRate = 0;
+		QualitySettings.vSyncCount = 0;
+		Debug.Log("unlocked fps");
+	}
+
+	// Update is called once per frame
+	void Update()
+	{
+
+	}
+}

Assets/editor_garbage/UnlimitFPS.cs.meta

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+guid: 7c930f9c62136f05dae4987c3fc776d2
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+  defaultReferences: []
+  executionOrder: 0
+  icon: {instanceID: 0}
+  userData: 
+  assetBundleName: 
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ProjectSettings/QualitySettings.asset

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     shadowmaskMode: 0
-    blendWeights: 1
+    skinWeights: 1
     textureQuality: 1
     anisotropicTextures: 0
     antiAliasing: 0
@@ -40,6 +40,7 @@ QualitySettings:
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     asyncUploadPersistentBuffer: 1
     resolutionScalingFixedDPIFactor: 1
+    customRenderPipeline: {fileID: 0}
     excludedTargetPlatforms: []
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     name: Low
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     shadowCascade4Split: {x: 0.06666667, y: 0.2, z: 0.46666667}
     shadowmaskMode: 0
-    blendWeights: 2
+    skinWeights: 2
     textureQuality: 0
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     antiAliasing: 0
@@ -75,6 +76,7 @@ QualitySettings:
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     asyncUploadPersistentBuffer: 1
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+    customRenderPipeline: {fileID: 0}
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+    skinWeights: 2
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     antiAliasing: 0
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+    skinWeights: 2
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+    skinWeights: 4
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     antiAliasing: 2
@@ -180,6 +184,7 @@ QualitySettings:
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+    skinWeights: 4
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     antiAliasing: 2
@@ -201,7 +206,7 @@ QualitySettings:
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+    vSyncCount: 0
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@@ -215,6 +220,7 @@ QualitySettings:
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+    customRenderPipeline: {fileID: 0}
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   m_PerPlatformDefaultQuality:
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lenia-kernel/.gitignore

@@ -0,0 +1,2 @@
+target/
+Cargo.lock

lenia-kernel/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "lenia-kernel"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

lenia-kernel/rustfmt.toml

@@ -0,0 +1 @@
+hard_tabs = true

lenia-kernel/src/main.rs

@@ -0,0 +1,43 @@
+use std::env;
+
+fn main() {
+	let args: Vec<_> = env::args().skip(1).collect();
+	if args.is_empty() {
+		println!("usage: kernel_radius");
+		return;
+	}
+	let radius = args[0].parse().unwrap();
+	let k_offset = 0.435;
+	let k_sharpness = 28.0;
+
+	let mut total_max = 0.0;
+	println!("				// generated by the rust program");
+	println!("				const int Radius = {};", radius);
+	println!("				#define RADIUS {}", radius);
+	println!("				// kernel LUT size is {} bytes", radius * (radius + 1) * 2);
+	println!("				const half Kernel[{}][{}] = {{", radius + 1, radius);
+	for y in 0..=radius {
+		print!("					{{");
+		for x in 1..=radius {
+			let k = k(x, y, radius, k_offset, k_sharpness);
+			total_max += k * 4.0;
+			print!("{:.4}, ", k);
+		}
+		println!("}},");
+	}
+	println!("				}};");
+	println!("				const float TOTAL_MAX = {};", total_max);
+}
+
+fn k(x: usize, y: usize, radius: usize, k_offset: f32, k_sharpness: f32) -> f32 {
+	let x = x as f32;
+	let y = y as f32;
+	let r = (x * x + y * y).sqrt() / radius as f32;
+	f32::exp(-((r - k_offset) * (r - k_offset)) * k_sharpness)
+	// lenia paper example kernel
+	// if r < 1.0 {
+	// 	f32::exp(4.0 - 4.0 / (4.0 * r * (1.0 - r)))
+	// } else {
+	// 	0.0
+	// }
+}