fix GoL shader bug and optimise, add more GoL presets

Assets/automata/GoL.meta

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Assets/automata/GoL/4_gliders.png.meta

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Assets/automata/GoL/Preset_13EngineCorderShip.mat

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Assets/automata/GoL/Preset_13EngineCorderShip.mat.meta

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Assets/automata/GoL/Preset_SirRobin.mat

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Assets/automata/GoL/Preset_SirRobin.mat.meta

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Assets/automata/GoL/gol.shader

@@ -0,0 +1,75 @@
+Shader "CrispyPin/gol"
+{
+	Properties
+	{
+		[NoScaleOffset]
+		_LastFrame ("Render texture", 2D) = "white" {}
+	}
+	SubShader
+	{
+		Tags { "RenderType"="Opaque" }
+		LOD 100
+
+		Pass
+		{
+			CGPROGRAM
+			#pragma vertex vert
+			#pragma fragment frag
+
+			#include "UnityCG.cginc"
+
+			#define WIDTH 256
+
+			struct appdata
+			{
+				float4 vertex : POSITION;
+				float2 uv : TEXCOORD0;
+			};
+
+			struct v2f
+			{
+				float2 uv : TEXCOORD0;
+				float4 vertex : SV_POSITION;
+			};
+
+			texture2D _LastFrame;
+
+			v2f vert (appdata v)
+			{
+				v2f o;
+				o.vertex = UnityObjectToClipPos(v.vertex);
+				o.uv = v.uv;
+				return o;
+			}
+
+			inline half state(uint2 p, int dx, int dy)
+			{
+				const uint x = (p.x + dx) % WIDTH;
+				const uint y = (p.y + dy) % WIDTH;
+				return _LastFrame[uint2(x, y)].b > 0;
+			}
+
+			fixed3 frag (v2f i) : SV_Target
+			{
+				if(_ProjectionParams.z > 1) discard;
+
+				const uint2 p = i.uv * WIDTH;
+				half count =
+					state(p, -1, -1) +
+					state(p,  0, -1) +
+					state(p,  1, -1) +
+					state(p, -1,  0) +
+					state(p,  1,  0) +
+					state(p, -1,  1) +
+					state(p,  0,  1) +
+					state(p,  1,  1);
+				half prev = _LastFrame[p].b > 0;
+
+				half next = count == 3 || ((count == 2) && prev);
+
+				return fixed3(i.uv * next, next * (_SinTime.y * 0.4 + 0.6));
+			}
+			ENDCG
+		}
+	}
+}

Assets/automata/GoL/gol_out.mat

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Assets/automata/GoL/gol_sim.mat

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+  m_Name: gol_sim
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+  assetBundleName: 
+  assetBundleVariant: 

Assets/automata/sim_output.shader

@@ -1,8 +1,8 @@
-Shader "CrispyPin/gol"
+Shader "CrispyPin/SimOutput"
 {
 	Properties
 	{
-		_LastFrame ("Texture", 2D) = "white" {}
+		_MainTex ("Texture", 2D) = "white" {}
 	}
 	SubShader
 	{
@@ -29,9 +29,11 @@
 				float2 uv : TEXCOORD0;
 				float4 vertex : SV_POSITION;
 				UNITY_VERTEX_OUTPUT_STEREO
+
 			};
 
-			sampler2D _LastFrame;
+			sampler2D _MainTex;
+			float4 _MainTex_ST;
 
 			v2f vert (appdata v)
 			{
@@ -41,38 +43,16 @@
 				UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
 
 				o.vertex = UnityObjectToClipPos(v.vertex);
-				o.uv = v.uv;
+				o.uv = TRANSFORM_TEX(v.uv, _MainTex);
 				return o;
 			}
 
-			int state(half2 uv, half x, half y){
-				return tex2D(_LastFrame, uv + half2(x, y)).r > 0;
-			}
-
 			fixed4 frag (v2f i) : SV_Target
 			{
-				const half d = 1.0/256.0;
+				// don't interfere with simulation camera
+				if(_ProjectionParams.z < 1) discard;
 
-				int count = state(i.uv, -d, -d)+
-					state(i.uv, 0, -d)+
-					state(i.uv, d, -d)+
-					state(i.uv, -d, 0)+
-					state(i.uv, d, 0)+
-					state(i.uv, -d, d)+
-					state(i.uv, 0, d)+
-					state(i.uv, d, d);
-				half this = tex2D(_LastFrame, i.uv).r;
-				half state;
-
-				if (this.r > 0){
-					state = count > 1 && count < 4;
-					// col = count > 0 && count < 6; // mazetric
-				}
-				else {
-					state = count == 3;
-				}
-
-				float4 col = float4(i.uv * state, 0.5 * state, 1);
+				fixed4 col = tex2D(_MainTex, i.uv);
 				return col;
 			}
 			ENDCG

Assets/automata/sim_output.shader.meta

@@ -0,0 +1,9 @@
+fileFormatVersion: 2
+guid: 6bd3377429d62992c8fdea6f71c8bcaa
+ShaderImporter:
+  externalObjects: {}
+  defaultTextures: []
+  nonModifiableTextures: []
+  userData: 
+  assetBundleName: 
+  assetBundleVariant: