Lenia: remove texture sampler, reduce gpu usage by ~45%
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13b30711ca
commit
6e1fe4d9fc
9 changed files with 94 additions and 97 deletions
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@ -38,7 +38,7 @@ RenderSettings:
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--- !u!157 &3
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@ -206,13 +206,13 @@ Transform:
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--- !u!1 &128608326
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@ -830,11 +830,11 @@ Transform:
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--- !u!1 &413786049
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@ -1352,7 +1352,7 @@ Transform:
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- {fileID: 1089900912}
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@ -1362,7 +1362,7 @@ Transform:
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--- !u!114 &1170317912
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MonoBehaviour:
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@ -1503,7 +1503,7 @@ Camera:
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m_Depth: 0
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m_CullingMask:
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serializedVersion: 2
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m_Bits: 2147946295
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m_Bits: 2147946263
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@ -1773,7 +1773,7 @@ GameObject:
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--- !u!65 &1377711729
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@ -1850,7 +1850,7 @@ Transform:
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--- !u!114 &1377711733
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MonoBehaviour:
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@ -2412,7 +2412,7 @@ Transform:
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--- !u!1 &1929306243
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@ -2709,11 +2709,11 @@ Transform:
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m_LocalScale: {x: 0.125, y: 0.125, z: 0.125}
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--- !u!1 &2129299478
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GameObject:
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@ -2870,7 +2870,7 @@ Transform:
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m_Children:
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- {fileID: 1187452030}
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m_Father: {fileID: 0}
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m_RootOrder: 4
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m_RootOrder: 5
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m_LocalEulerAnglesHint: {x: 0, y: -180, z: 0}
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--- !u!114 &2129299486
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MonoBehaviour:
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@ -8,7 +8,7 @@ Material:
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m_PrefabInstance: {fileID: 0}
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m_PrefabAsset: {fileID: 0}
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m_Name: gol_out
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m_Shader: {fileID: 4800000, guid: 6bd3377429d62992c8fdea6f71c8bcaa, type: 3}
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m_Shader: {fileID: 4800000, guid: 2e618ea97d394cb79a97f3f69d29807a, type: 3}
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m_ShaderKeywords:
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m_LightmapFlags: 0
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m_EnableInstancingVariants: 0
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@ -70,6 +70,7 @@ Material:
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- _DistortionStrength: 1
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- _DistortionStrengthScaled: 0
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- _DstBlend: 0
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- _Emission: 0.5
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- _EmissionEnabled: 0
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- _FlipbookMode: 0
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- _GlossMapScale: 1
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@ -20,6 +20,8 @@
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#include "UnityCG.cginc"
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#define WIDTH 512
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struct appdata
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{
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float4 vertex : POSITION;
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@ -33,7 +35,7 @@
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float4 vertex : SV_POSITION;
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};
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sampler2D _LastFrame;
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texture2D _LastFrame;
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float _GrowtCenter;
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float _GrowthWidth;
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float _Speed;
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@ -74,43 +76,42 @@
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return exp(-((u-mu) * (u-mu)) / (2 * sigma * sigma)) * 2.0 - 1.0;
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}
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inline half value(float2 center, float x, float y) {
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return tex2D(_LastFrame, center + float2(x, y)).r;
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inline float value(uint2 p, int dx, int dy) {
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const uint x = (p.x + dx) % WIDTH;
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const uint y = (p.y + dy) % WIDTH;
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return _LastFrame[uint2(x, y)].r;
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}
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fixed4 frag (v2f i) : SV_Target
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{
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if(_ProjectionParams.z > 1) discard;
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const float resolution = 512.0;
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const float d = 1.0 / resolution;
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// Defines RADIUS Kernel total_max
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#include "lenia_generated_kernel.cginc"
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const uint2 p = i.uv * WIDTH;
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float total = 0.0;
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[unroll(RADIUS)]
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for (int y = 0; y < RADIUS; y++) {
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[unroll(RADIUS)]
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for (int x = 1; x <= RADIUS; x++) {
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const float xx = (float)x * d;
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const float yy = (float)y * d;
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total += value(i.uv, xx, yy) * Kernel[y][x-1];
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total += value(i.uv, -yy, xx) * Kernel[y][x-1];
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total += value(i.uv, -xx, -yy) * Kernel[y][x-1];
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total += value(i.uv, yy, -xx) * Kernel[y][x-1];
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total += value(p, x, y) * Kernel[y][x - 1];
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total += value(p, -y, x) * Kernel[y][x - 1];
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total += value(p, -x, -y) * Kernel[y][x - 1];
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total += value(p, y, -x) * Kernel[y][x - 1];
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}
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}
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float old_state = value(i.uv, 0.0, 0.0) ;
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float old_state = value(p, 0, 0) ;
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float count = total / total_max;
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const float step = _Speed * unity_DeltaTime.x;
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float state = activation(count) * step + old_state;
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state = clamp(state, 0, 1);
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// kernel visualization: lookup table (SLOW)
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// kernel visualization: lookup table (VERY SLOW)
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// float k = 0;
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// {
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// float2 p = (i.uv - 0.5 ) * resolution;
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// float2 p = (i.uv - 0.5 ) * WIDTH;
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// p = floor(p);
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// if (p.x > 0 && p.y >= 0) {
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// k = Kernel[p.y][p.x-1];
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@ -124,7 +125,7 @@
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// }
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// kernel visualisation: real size
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// float2 p = (i.uv - 0.5) * resolution;
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// float2 p = (i.uv - 0.5) * WIDTH;
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// float k = kernel(length(p)) * (max(abs(p.x), abs(p.y)) <= RADIUS);
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// kernel visualisation: fill square
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@ -24,3 +24,5 @@ const half Kernel[21][20] = {
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{0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, 0.00, },
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};
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const float total_max = 356.63977;
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// Total texture lookups: 206 * 4 + 1 = 825
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// (lookups multiplied by 0.0 get optimised away by the shader compiler, and this giant table generally only exists at compile time)
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@ -8,15 +8,14 @@ Material:
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m_PrefabInstance: {fileID: 0}
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m_PrefabAsset: {fileID: 0}
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m_Name: lenia_out
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m_Shader: {fileID: 211, guid: 0000000000000000f000000000000000, type: 0}
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m_Shader: {fileID: 4800000, guid: 2e618ea97d394cb79a97f3f69d29807a, type: 3}
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m_ShaderKeywords:
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m_LightmapFlags: 0
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m_EnableInstancingVariants: 0
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m_DoubleSidedGI: 0
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m_CustomRenderQueue: -1
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stringTagMap: {}
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disabledShaderPasses:
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- ALWAYS
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disabledShaderPasses: []
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m_SavedProperties:
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serializedVersion: 3
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m_TexEnvs:
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@ -71,6 +70,7 @@ Material:
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- _DistortionStrength: 1
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- _DistortionStrengthScaled: 0
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- _DstBlend: 0
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- _Emission: 0.5
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- _EmissionEnabled: 0
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- _FlipbookMode: 0
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- _GlossMapScale: 1
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43
Assets/automata/ca_output.shader
Normal file
43
Assets/automata/ca_output.shader
Normal file
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@ -0,0 +1,43 @@
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Shader "CrispyPin/CA Output"
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{
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Properties
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{
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[NoScaleOffset]
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_MainTex ("RenderTexture", 2D) = "white" {}
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_Emission ("Emission", Range(0, 1)) = 0.5
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}
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SubShader
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{
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Tags { "RenderType"="Opaque" }
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LOD 200
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CGPROGRAM
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// Physically based Standard lighting model, and enable shadows on all light types
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#pragma surface surf Standard fullforwardshadows
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// Use shader model 3.0 target, to get nicer looking lighting
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#pragma target 3.0
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struct Input
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{
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float2 uv_MainTex;
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};
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sampler2D _MainTex;
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half _Emission;
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void surf (Input IN, inout SurfaceOutputStandard o)
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{
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// don't interfere with simulation camera
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if(_ProjectionParams.z < 1) discard;
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// Albedo comes from a texture tinted by color
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fixed4 c = tex2D(_MainTex, IN.uv_MainTex);
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o.Albedo = c.rgb;
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o.Emission = c.rgb * _Emission;
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}
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ENDCG
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}
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FallBack "Diffuse"
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}
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@ -1,5 +1,5 @@
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fileFormatVersion: 2
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guid: 6bd3377429d62992c8fdea6f71c8bcaa
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guid: 2e618ea97d394cb79a97f3f69d29807a
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ShaderImporter:
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externalObjects: {}
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defaultTextures: []
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@ -1,61 +0,0 @@
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Shader "CrispyPin/SimOutput"
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{
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Properties
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{
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_MainTex ("Texture", 2D) = "white" {}
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}
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SubShader
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{
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Tags { "RenderType"="Opaque" }
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LOD 100
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Pass
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{
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CGPROGRAM
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#pragma vertex vert
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#pragma fragment frag
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#include "UnityCG.cginc"
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struct appdata
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{
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float4 vertex : POSITION;
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float2 uv : TEXCOORD0;
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UNITY_VERTEX_INPUT_INSTANCE_ID
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};
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struct v2f
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{
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float2 uv : TEXCOORD0;
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float4 vertex : SV_POSITION;
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UNITY_VERTEX_OUTPUT_STEREO
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};
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sampler2D _MainTex;
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float4 _MainTex_ST;
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v2f vert (appdata v)
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{
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v2f o;
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UNITY_SETUP_INSTANCE_ID(v);
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UNITY_INITIALIZE_OUTPUT(v2f, o);
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UNITY_INITIALIZE_VERTEX_OUTPUT_STEREO(o);
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o.vertex = UnityObjectToClipPos(v.vertex);
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o.uv = TRANSFORM_TEX(v.uv, _MainTex);
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return o;
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}
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fixed4 frag (v2f i) : SV_Target
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{
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// don't interfere with simulation camera
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if(_ProjectionParams.z < 1) discard;
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fixed4 col = tex2D(_MainTex, i.uv);
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return col;
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}
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ENDCG
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}
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}
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}
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@ -10,18 +10,23 @@ fn main() {
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let radius = args[0].parse().unwrap();
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let k_offset = 0.435;
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let k_sharpness = 28.0;
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let precision = 50.0; // for rounding
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let mut img = image::RgbImage::new(radius * 2 + 1, radius * 2 + 1);
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let mut total_max = 0.0;
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let mut total_lookups = 0;
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println!("// generated by the rust program");
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println!("#define RADIUS {}", radius);
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println!("const half Kernel[{}][{}] = {{", radius + 1, radius);
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for y in 0..=radius {
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print!(" {{");
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for x in 1..=radius {
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let k = (k(x, y, radius, k_offset, k_sharpness) * 50.0).floor() / 50.0;
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let k = (k(x, y, radius, k_offset, k_sharpness) * precision).floor() / precision;
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total_max += k * 4.0;
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if k > 0.0 {
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total_lookups += 1;
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}
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print!("{:.2}, ", k);
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{
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let pixel = image::Rgb([0, (k * 255.0) as u8, 0]);
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@ -36,6 +41,12 @@ fn main() {
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}
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println!("}};");
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println!("const float total_max = {};", total_max);
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println!(
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"// Total texture lookups: {} * 4 + 1 = {}",
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total_lookups,
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total_lookups * 4 + 1
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);
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println!("// (lookups multiplied by 0.0 get optimised away by the shader compiler, and this giant table generally only exists at compile time)");
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img.save("kernel.png").unwrap();
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}
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