├── .gitattributes ├── .gitignore ├── Assets ├── Demo.unity ├── Demo.unity.meta ├── Resources.meta ├── Resources │ ├── BullshitOcean.shader │ ├── BullshitOcean.shader.meta │ ├── Combine.mat │ ├── Combine.mat.meta │ ├── CombineShader.shader │ ├── CombineShader.shader.meta │ ├── EncinoFFT.compute │ ├── EncinoFFT.compute.meta │ ├── EncinoSpectrum.compute │ ├── EncinoSpectrum.compute.meta │ ├── Noise.png │ ├── Noise.png.meta │ ├── Ocean.mat │ └── Ocean.mat.meta ├── Scripts.meta └── Scripts │ ├── Bullshit.cs │ ├── Bullshit.cs.meta │ ├── WaveSpectrum.cs │ └── WaveSpectrum.cs.meta ├── LICENSE ├── ProjectSettings ├── AudioManager.asset ├── ClusterInputManager.asset ├── DynamicsManager.asset ├── EditorBuildSettings.asset ├── EditorSettings.asset ├── GraphicsSettings.asset ├── InputManager.asset ├── NavMeshAreas.asset ├── NetworkManager.asset ├── Physics2DSettings.asset ├── ProjectSettings.asset ├── ProjectVersion.txt ├── QualitySettings.asset ├── TagManager.asset ├── TimeManager.asset └── UnityConnectSettings.asset └── README.md /.gitattributes: -------------------------------------------------------------------------------- 1 | # Auto detect text files and perform LF normalization 2 | * text=auto 3 | -------------------------------------------------------------------------------- /.gitignore: -------------------------------------------------------------------------------- 1 | [Ll]ibrary/ 2 | [Tt]emp/ 3 | [Oo]bj/ 4 | [Bb]uild/ 5 | [Bb]uilds/ 6 | Assets/AssetStoreTools* 7 | 8 | # Visual Studio cache directory 9 | .vs/ 10 | 11 | # Autogenerated VS/MD/Consulo solution and project files 12 | ExportedObj/ 13 | .consulo/ 14 | *.csproj 15 | *.unityproj 16 | *.sln 17 | *.suo 18 | *.tmp 19 | *.user 20 | *.userprefs 21 | *.pidb 22 | *.booproj 23 | *.svd 24 | *.pdb 25 | *.opendb 26 | *.VC.db 27 | 28 | # Unity3D generated meta files 29 | *.pidb.meta 30 | *.pdb.meta 31 | 32 | # Unity3D Generated File On Crash Reports 33 | sysinfo.txt 34 | 35 | # Builds 36 | *.apk 37 | *.unitypackage 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-------------------------------------------------------------------------------- /Assets/Resources/BullshitOcean.shader: -------------------------------------------------------------------------------- 1 | Shader "Custom/BullshitOcean" { 2 | Properties { 3 | _SeaColor ("Color", Color) = (1,1,1,1) 4 | _MainTex ("Albedo (RGB)", 2D) = "white" {} 5 | _NormalTex ("Normal Map", 2D) = "white" {} 6 | _DispTex ("Displacement Map", 2D) = "white" {} 7 | _Glossiness ("Smoothness", Range(0,1)) = 0.7 8 | _Metallic ("Metallic", Range(0,1)) = 0.0 9 | _Choppiness("Choppiness", Range(0, 1000)) = 100 10 | _EdgeLength("EdgeLength", Range(1, 128)) = 4 11 | } 12 | SubShader { 13 | Tags { "RenderType"="Opaque" } 14 | LOD 200 15 | 16 | CGPROGRAM 17 | #pragma surface surf Ocean fullforwardshadows vertex:vert tessellate:tess 18 | #pragma target 5.0 19 | #pragma enable_d3d11_debug_symbols 20 | #include "Tessellation.cginc" 21 | #include "UnityCG.cginc" 22 | #include "Lighting.cginc" 23 | 24 | #define _PI 3.1415926f 25 | 26 | sampler2D _MainTex; 27 | 28 | struct Input { 29 | float2 uv_MainTex; 30 | float2 coord; 31 | }; 32 | 33 | struct appdata 34 | { 35 | float4 vertex : POSITION; 36 | float4 tangent : TANGENT; 37 | float3 normal : NORMAL; 38 | float2 texcoord : TEXCOORD0; 39 | }; 40 | 41 | float4 _SeaColor; 42 | float L; 43 | float Amplitude; 44 | float _NormalTexelSize; 45 | float OceanLevel; 46 | sampler2D _NormalTex; 47 | sampler2D _DispTex; 48 | sampler2D _NoiseTex; 49 | sampler2D _FresnelLookup; 50 | float4x4 _RangeMatrix; 51 | float _Glossiness; 52 | float _Metallic; 53 | float _Choppiness; 54 | float _EdgeLength; 55 | 56 | half4 LightingOcean(SurfaceOutput s, half3 lightDir, half3 viewDir, half atten) 57 | { 58 | float cosTheta = dot(s.Normal, viewDir); 59 | float fresnel = tex2D(_FresnelLookup, float2(cosTheta, 0)).r; 60 | half3 h = normalize(lightDir + viewDir); 61 | half diff = max(0, dot(s.Normal, lightDir)); 62 | float nh = max(0, dot(s.Normal, h)); 63 | float spec = pow(nh, 48.0) * s.Gloss; 64 | half4 c; 65 | c.rgb = (s.Albedo * _LightColor0.rgb * diff + _LightColor0.rgb * spec * fresnel) * atten * 2; 66 | c.a = s.Alpha; 67 | return c; 68 | } 69 | 70 | float4 tess (appdata v0, appdata v1, appdata v2) 71 | { 72 | return UnityEdgeLengthBasedTess (v0.vertex, v1.vertex, v2.vertex, _EdgeLength); 73 | } 74 | 75 | void vert(inout appdata v) 76 | { 77 | float4 pos = lerp(lerp(_RangeMatrix[0], _RangeMatrix[1], v.texcoord.x), 78 | lerp(_RangeMatrix[2], _RangeMatrix[3], v.texcoord.x), 79 | v.texcoord.y); 80 | float4 worldPos = mul(unity_ObjectToWorld, pos); 81 | worldPos.y = OceanLevel; 82 | float4 revertPos = mul(unity_WorldToObject, worldPos); 83 | pos = revertPos; 84 | float2 coord = pos.xz / L; 85 | float3 displacement = tex2Dlod(_DispTex, float4(coord, 0, 0)).rgb; 86 | pos.xyz += displacement.rgb * Amplitude * float3(_Choppiness, 1, _Choppiness); 87 | v.vertex = pos; 88 | v.texcoord = coord; 89 | } 90 | 91 | void surf (Input IN, inout SurfaceOutput o) { 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"UnityCG.cginc" 13 | 14 | int N; 15 | float L; 16 | float invL; 17 | Texture2D inputH; 18 | Texture2D inputDx; 19 | Texture2D inputDy; 20 | 21 | float3 SampleDisplacement(int2 coord) 22 | { 23 | coord.x += coord.x < 0 ? 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N : (coord.y >= N ? -N : 0); 25 | return float3(inputDx[coord], inputH[coord], inputDy[coord]) 26 | * float3(invL, 1.0f, invL); 27 | } 28 | 29 | void frag(v2f_img i, out float4 outDisplacement : SV_Target0, out float4 outGradientFold : SV_Target1) 30 | { 31 | int2 coord = floor(i.pos.xy); 32 | outDisplacement = float4(SampleDisplacement(coord), 1); 33 | 34 | float3 dispL = SampleDisplacement(coord + int2(-1, 0)); 35 | float3 dispR = SampleDisplacement(coord + int2(+1, 0)); 36 | float3 dispT = SampleDisplacement(coord + int2(0, -1)); 37 | float3 dispB = SampleDisplacement(coord + int2(0, +1)); 38 | 39 | float3 diffH = dispR - dispL; 40 | float3 diffV = dispB - dispT; 41 | float2 Dx = diffH.xz * N * 2; 42 | float2 Dy = diffV.xz * N * 2; 43 | float J = (1.0f + Dx.x) * (1.0f + Dy.y) - Dx.y * Dy.x; 44 | float fold = max(1.0f - saturate(J), 0); 45 | 46 | outGradientFold = float4(-diffH.y, -diffV.y, 0, fold); 47 | } 48 | ENDCG 49 | } 50 | } 51 | } 52 | -------------------------------------------------------------------------------- /Assets/Resources/CombineShader.shader.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 5620e64fb5e5d124fa644bf94fe510ff 3 | ShaderImporter: 4 | externalObjects: {} 5 | defaultTextures: [] 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /Assets/Resources/EncinoFFT.compute: -------------------------------------------------------------------------------- 1 | #pragma kernel EncinoFFT SIZE=256 PASSES=8 CHANNEL=x TX=256 TY=1 FINAL=0 2 | #pragma kernel EncinoFFT SIZE=256 PASSES=8 CHANNEL=y TX=1 TY=256 FINAL=1 3 | #pragma kernel EncinoFFT SIZE=512 PASSES=9 CHANNEL=x TX=512 TY=1 FINAL=0 4 | #pragma kernel EncinoFFT SIZE=512 PASSES=9 CHANNEL=y TX=1 TY=512 FINAL=1 5 | #pragma kernel EncinoFFT SIZE=1024 PASSES=10 CHANNEL=x TX=1024 TY=1 FINAL=0 6 | #pragma kernel EncinoFFT SIZE=1024 PASSES=10 CHANNEL=y TX=1 TY=1024 FINAL=1 7 | 8 | Texture2D input; 9 | Texture2D inputButterfly; 10 | #if !FINAL 11 | RWTexture2D output; 12 | #else 13 | RWTexture2D output; 14 | #endif 15 | 16 | groupshared float2 intermediates[SIZE]; 17 | groupshared float2 scratch[SIZE]; 18 | 19 | void ButterflyPass(float2 butterfly, uint coord, uint passIndex) 20 | { 21 | uint indexA, indexB; 22 | 23 | uint offset = 1 << passIndex; 24 | if ((coord / offset) % 2 == 1) 25 | { 26 | indexA = coord - offset; 27 | indexB = coord; 28 | } 29 | else 30 | { 31 | indexA = coord; 32 | indexB = coord + offset; 33 | } 34 | 35 | if (passIndex == 0) 36 | { 37 | indexA = reversebits(indexA) >> (32 - PASSES); 38 | indexB = reversebits(indexB) >> (32 - PASSES); 39 | } 40 | 41 | const bool pingpong = (passIndex % 2) == 0; 42 | 43 | float2 valueA, valueB; 44 | if (pingpong) 45 | { 46 | valueA = intermediates[indexA]; 47 | valueB = intermediates[indexB]; 48 | } 49 | else 50 | { 51 | valueA = scratch[indexA]; 52 | valueB = scratch[indexB]; 53 | } 54 | 55 | float2 weight = butterfly.xy; 56 | float2 weightedValueB = weight * valueB.r + weight.gr * valueB.g * float2(-1,1); 57 | float2 result = valueA + weightedValueB; 58 | 59 | if (pingpong) 60 | { 61 | scratch[coord] = result; 62 | } 63 | else 64 | { 65 | intermediates[coord] = result; 66 | } 67 | } 68 | 69 | float2 conj(float2 v) 70 | { 71 | return float2(v.x, -v.y); 72 | } 73 | 74 | [numthreads(TX,TY,1)] 75 | void EncinoFFT(uint2 id : SV_DispatchThreadID) 76 | { 77 | uint coord = id.CHANNEL; 78 | #if !FINAL 79 | intermediates[coord] = conj(input[id]); 80 | #else 81 | intermediates[coord] = input[id]; 82 | #endif 83 | 84 | [unroll(PASSES)] 85 | for (uint passIndex = 0; passIndex < PASSES; ++passIndex) 86 | { 87 | GroupMemoryBarrierWithGroupSync(); 88 | ButterflyPass(inputButterfly[uint2(coord, passIndex)], coord, passIndex); 89 | } 90 | 91 | GroupMemoryBarrierWithGroupSync(); 92 | 93 | const bool pingpong = (PASSES % 2) == 0; 94 | const float2 result = pingpong ? intermediates[coord] : scratch[coord]; 95 | #if !FINAL 96 | output[id] = result; 97 | #else 98 | const float sign = ((id.x + id.y) % 2) == 1 ? -1.0f : 1.0f; 99 | output[id] = sign * result.x; 100 | #endif 101 | } 102 | -------------------------------------------------------------------------------- /Assets/Resources/EncinoFFT.compute.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: c65575c39dff4b04baabe1904a77e283 3 | ComputeShaderImporter: 4 | externalObjects: {} 5 | currentAPIMask: 4 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /Assets/Resources/EncinoSpectrum.compute: -------------------------------------------------------------------------------- 1 | #define INV2PI 0.15915494309f 2 | #define INVPI2 0.63661977236f 3 | #define HPI 1.57079632679f 4 | #define PI 3.14159265358f 5 | #define PI2 6.28318530717f 6 | #define HSQRT2 0.70710678118f 7 | #define _G 9.81f 8 | 9 | #pragma kernel EncinoSpectrumInit 10 | #pragma kernel EncinoSpectrumUpdate 11 | 12 | RWTexture2D outputH0; 13 | uint N; 14 | float L; 15 | float windVelocity; 16 | float2 windDir_normal; 17 | 18 | // 以下随机数的相关内容可以参看 19 | // http://www.reedbeta.com/blog/quick-and-easy-gpu-random-numbers-in-d3d11/ 20 | uint rngState; 21 | 22 | 23 | uint WangHash(uint seed) 24 | { 25 | seed = (seed ^ 61) ^ (seed >> 16); 26 | seed *= 9; 27 | seed = seed ^ (seed >> 4); 28 | seed *= 0x27d4eb2d; 29 | seed = seed ^ (seed >> 15); 30 | return seed; 31 | } 32 | 33 | uint Rand() 34 | { 35 | // Xorshift algorithm from George Marsaglia's paper 36 | rngState ^= (rngState << 13); 37 | rngState ^= (rngState >> 17); 38 | rngState ^= (rngState << 5); 39 | return rngState; 40 | } 41 | 42 | float RandFloat() 43 | { 44 | return Rand() / 4294967296.0f; 45 | } 46 | 47 | float RandGauss() 48 | { 49 | float u1 = RandFloat(); 50 | float u2 = RandFloat(); 51 | if (u1 < 1e-6f) 52 | u1 = 1e-6f; 53 | return sqrt(-2.0f * log(u1)) * cos(PI2 * u2); 54 | } 55 | 56 | float GeneralizedABSpectrum(float A, float B, float w) 57 | { 58 | float w4 = w * w; 59 | w4 *= w4; 60 | float w5 = w4 * w; 61 | return A / w5 * exp(-B / w4); 62 | } 63 | 64 | float PositiveCosSquaredDirectionSpreading(float theta) 65 | { 66 | if (theta > -HPI && theta < HPI) 67 | { 68 | return INVPI2 * cos(theta) * cos(theta); 69 | } 70 | return 0; 71 | } 72 | 73 | [numthreads(8,8,1)] 74 | void EncinoSpectrumInit(uint2 id : SV_DispatchThreadID) 75 | { 76 | int2 center = N.xx / 2; 77 | int2 coord = id - center; 78 | if (coord.x == 0 && coord.y == 0) 79 | { 80 | outputH0[id] = float4(0, 0, 0, 0); 81 | return; 82 | } 83 | 84 | // Find wave vector and number 85 | float2 k = PI2 * coord / L; 86 | float klength = length(k); 87 | 88 | // Init seed 89 | rngState = WangHash(id.y * N + id.x); 90 | 91 | float w = sqrt(_G * klength); 92 | float dwdk = _G / (2.0f * w); 93 | 94 | // Get Non-Directional Wave Spectra 95 | float A = 0.01f * _G * _G; 96 | float B = _G / windVelocity; 97 | //B *= B; 98 | //B *= B; 99 | //B *= 0.6858f; 100 | float SnonD = GeneralizedABSpectrum(A, B, w) * dwdk / klength; 101 | 102 | // Get Direction Spreading Function 103 | float thetaPos = atan2(-k.y, k.x); 104 | float thetaNeg = atan2(k.y, -k.x); 105 | float DPos = PositiveCosSquaredDirectionSpreading(thetaPos); 106 | float DNeg = PositiveCosSquaredDirectionSpreading(thetaNeg); 107 | 108 | // Get Amplitude 109 | float dk = PI2 / L; 110 | float SPos = SnonD * DPos; 111 | float SNeg = SnonD * DNeg; 112 | float APos = RandGauss() * sqrt(abs(SPos) * dk * dk * 2); 113 | float ANeg = RandGauss() * sqrt(abs(SNeg) * dk * dk * 2); 114 | 115 | // Random Phase 116 | float PPos = RandFloat() * PI2; 117 | float PNeg = RandFloat() * PI2; 118 | 119 | outputH0[id] = float4( 120 | APos * float2(cos(PPos), - sin(PPos)), 121 | ANeg * float2(cos(PNeg), - sin(PNeg)) 122 | ); 123 | } 124 | 125 | float time; 126 | 127 | Texture2D inputH0; 128 | RWTexture2D outputH; 129 | RWTexture2D outputDx; 130 | RWTexture2D outputDy; 131 | 132 | float2 cmul(float2 lhs, float2 rhs) 133 | { 134 | return float2( 135 | lhs.x * rhs.x - lhs.y * rhs.y, 136 | lhs.x * rhs.y + lhs.y * rhs.x 137 | ); 138 | } 139 | 140 | 141 | [numthreads(8,8,1)] 142 | void EncinoSpectrumUpdate(uint2 id : SV_DispatchThreadID) 143 | { 144 | int2 center = N.xx / 2; 145 | int2 coord = id - center; 146 | 147 | float2 k = PI2 * coord / L; 148 | float klength = length(k); 149 | 150 | float w = sqrt(abs(_G * k)); 151 | 152 | // Advance time 153 | float sw; float cw; 154 | sincos(w * time, sw, cw); 155 | 156 | float2 fwd = float2(cw, -sw); 157 | float2 bkwd = float2(cw, sw); 158 | 159 | float4 h0 = inputH0[id]; 160 | float2 h = cmul(h0.xy, fwd) + cmul(h0.zw, bkwd); 161 | 162 | outputH[id] = h; 163 | outputDx[id] = float2(-h.y * k.x, h.x * k.x) / (klength + 0.00001f); 164 | outputDy[id] = float2(-h.y * k.y, 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externalObjects: {} 5 | mainObjectFileID: 2100000 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /Assets/Scripts.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: deb11d4210c158d4faa427644a4b6941 3 | folderAsset: yes 4 | DefaultImporter: 5 | externalObjects: {} 6 | userData: 7 | assetBundleName: 8 | assetBundleVariant: 9 | -------------------------------------------------------------------------------- /Assets/Scripts/Bullshit.cs: -------------------------------------------------------------------------------- 1 | using System.Collections; 2 | using System.Collections.Generic; 3 | using UnityEngine; 4 | 5 | [RequireComponent(typeof(Camera))] 6 | public class Bullshit : MonoBehaviour { 7 | public Material projectorMat; 8 | public float OceanLevel = 0; 9 | 10 | Camera cam; 11 | 12 | class FrustrumPoint 13 | { 14 | public Vector4 localPos; 15 | public Vector4 worldPos; 16 | } 17 | 18 | // Use this for initialization 19 | void Start () { 20 | cam = GetComponent(); 21 | CreateGrid(); 22 | } 23 | 24 | // Update is called once per frame 25 | void Update () { 26 | GetCrossPoint(); 27 | MakeRangeMatrix(); 28 | MeshTransformKeep(); 29 | } 30 | 31 | #region 防止裁剪 32 | void MeshTransformKeep() 33 | { 34 | GridTransform.rotation = Quaternion.Euler(Vector3.zero); 35 | } 36 | #endregion 37 | 38 | #region 调试用 39 | void OnDrawGizmos() 40 | { 41 | if (cam == null) return; 42 | Matrix4x4 matrixV = cam.worldToCameraMatrix; 43 | Matrix4x4 matrixP = cam.projectionMatrix; 44 | var ivp = (matrixP * matrixV).inverse; 45 | //foreach (var v in frustrumCorner) 46 | //{ 47 | // Gizmos.DrawSphere(cameraToWorld(v), 0.1f); 48 | //} 49 | //foreach (var v in crossPoints) 50 | //{ 51 | // Gizmos.DrawSphere(v.worldPos, 0.1f); 52 | //} 53 | if (crossPoints.Count <= 3) return; 54 | Vector3 s1 = (Vector3)(crossPoints[1].worldPos - crossPoints[0].worldPos); 55 | Vector3 s2 = (Vector3)(crossPoints[3].worldPos - crossPoints[1].worldPos); 56 | Vector3 s3 = (Vector3)(crossPoints[1].worldPos - crossPoints[2].worldPos); 57 | Vector3 s4 = (Vector3)(crossPoints[3].worldPos - crossPoints[1].worldPos); 58 | Vector3 d1 = Vector3.Cross(s1, s2); 59 | Vector3 d2 = Vector3.Cross(s3, s4); 60 | //if (Vector3.Dot(d1, d2) > 0) 61 | //{ 62 | // Gizmos.DrawLine(crossPoints[0].worldPos, crossPoints[2].worldPos); 63 | // Gizmos.DrawLine(crossPoints[1].worldPos, crossPoints[3].worldPos); 64 | // Gizmos.DrawLine(crossPoints[0].worldPos, crossPoints[1].worldPos); 65 | // Gizmos.DrawLine(crossPoints[2].worldPos, crossPoints[3].worldPos); 66 | //} 67 | //else 68 | //{ 69 | // Gizmos.DrawLine(crossPoints[0].worldPos, crossPoints[3].worldPos); 70 | // Gizmos.DrawLine(crossPoints[1].worldPos, crossPoints[2].worldPos); 71 | // Gizmos.DrawLine(crossPoints[0].worldPos, crossPoints[1].worldPos); 72 | // Gizmos.DrawLine(crossPoints[2].worldPos, crossPoints[3].worldPos); 73 | //} 74 | //for (int i = 0; i < crossPoints.Count - 1; i++) 75 | //{ 76 | // Gizmos.DrawLine(crossPoints[i].worldPos, crossPoints[i + 1].worldPos); 77 | //} 78 | //Gizmos.DrawLine(crossPoints[crossPoints.Count - 1].worldPos, crossPoints[0].worldPos); 79 | Gizmos.color = Color.red; 80 | Gizmos.DrawLine(crossPoints[0].worldPos, crossPoints[1].worldPos); 81 | 82 | Gizmos.color = Color.yellow; 83 | Gizmos.DrawLine(crossPoints[1].worldPos, crossPoints[2].worldPos); 84 | 85 | Gizmos.color = Color.green; 86 | Gizmos.DrawLine(crossPoints[2].worldPos, crossPoints[3].worldPos); 87 | 88 | Gizmos.color = Color.blue; 89 | Gizmos.DrawLine(crossPoints[3].worldPos, crossPoints[0].worldPos); 90 | } 91 | #endregion 92 | 93 | #region 遍历交点，传入矩阵 94 | Matrix4x4 matrixR; 95 | void MakeRangeMatrix() 96 | { 97 | matrixR = Matrix4x4.zero; 98 | if (crossPoints.Count < 3) 99 | return; 100 | if (crossPoints.Count == 3) 101 | { 102 | Vector3 t1 = (Vector3)(crossPoints[1].worldPos - crossPoints[0].worldPos); 103 | Vector3 t2 = (Vector3)(crossPoints[2].worldPos - crossPoints[1].worldPos); 104 | if (Vector3.Cross(t1, t2).y > 0) 105 | { 106 | matrixR.SetRow(2, crossPoints[0].worldPos); 107 | matrixR.SetRow(0, crossPoints[0].worldPos); 108 | matrixR.SetRow(3, crossPoints[1].worldPos); 109 | matrixR.SetRow(1, crossPoints[2].worldPos); 110 | } 111 | else 112 | { 113 | matrixR.SetRow(0, crossPoints[0].worldPos); 114 | matrixR.SetRow(2, crossPoints[0].worldPos); 115 | matrixR.SetRow(1, crossPoints[1].worldPos); 116 | matrixR.SetRow(3, crossPoints[2].worldPos); 117 | } 118 | projectorMat.SetMatrix("_RangeMatrix", matrixR); 119 | return; 120 | } 121 | // 0 1 122 | // 123 | // 3 2 124 | Resort4Point(ref crossPoints); 125 | matrixR.SetRow(0, crossPoints[0].worldPos); 126 | matrixR.SetRow(1, crossPoints[3].worldPos); 127 | matrixR.SetRow(2, crossPoints[1].worldPos); 128 | matrixR.SetRow(3, crossPoints[2].worldPos); 129 | projectorMat.SetMatrix("_RangeMatrix", matrixR); 130 | } 131 | 132 | void Resort4Point(ref List list) 133 | { 134 | Vector3 s1 = (Vector3)(crossPoints[1].worldPos - crossPoints[0].worldPos); 135 | Vector3 s2 = (Vector3)(crossPoints[2].worldPos - crossPoints[1].worldPos); 136 | Vector3 d1 = Vector3.Cross(s1, s2); 137 | //第一次交换，保证前3点次序 138 | if (d1.y < 0) 139 | { 140 | FrustrumPoint t = crossPoints[1]; 141 | crossPoints[1] = crossPoints[2]; 142 | crossPoints[2] = t; 143 | } 144 | s1 = (Vector3)(crossPoints[2].worldPos - crossPoints[1].worldPos); 145 | s2 = (Vector3)(crossPoints[3].worldPos - crossPoints[2].worldPos); 146 | Vector3 s3 = (Vector3)(crossPoints[0].worldPos - crossPoints[3].worldPos); 147 | Vector3 s4 = (Vector3)(crossPoints[1].worldPos - crossPoints[0].worldPos); 148 | d1 = Vector3.Cross(s1, s2); 149 | Vector3 d2 = Vector3.Cross(s2, s3); 150 | Vector3 d3 = Vector3.Cross(s3, s4); 151 | //第二次交换，保证4点次序 152 | if (d1.y * d2.y < 0) 153 | { 154 | FrustrumPoint t = crossPoints[2]; 155 | crossPoints[2] = crossPoints[1]; 156 | crossPoints[1] = t; 157 | } 158 | else if (d2.y * d3.y < 0) 159 | { 160 | FrustrumPoint t = crossPoints[3]; 161 | crossPoints[3] = crossPoints[2]; 162 | crossPoints[2] = t; 163 | } 164 | //最后判断是否正面朝上 165 | s1 = (Vector3)(crossPoints[2].worldPos - crossPoints[1].worldPos); 166 | s2 = (Vector3)(crossPoints[3].worldPos - crossPoints[2].worldPos); 167 | d1 = Vector3.Cross(s1, s2); 168 | if (d1.y < 0) 169 | { 170 | FrustrumPoint t = crossPoints[3]; 171 | crossPoints[3] = crossPoints[0]; 172 | crossPoints[0] = t; 173 | t = crossPoints[2]; 174 | crossPoints[2] = crossPoints[1]; 175 | crossPoints[1] = t; 176 | } 177 | } 178 | #endregion 179 | 180 | #region 交点计算 181 | [SerializeField] 182 | float outScale = 0.1f; 183 | readonly Vector4[] frustrumCorner = new Vector4[]{ 184 | // near 185 | new Vector4(-1, -1, -1, 1), 186 | new Vector4( 1, -1, -1, 1), 187 | new Vector4( 1, 1, -1, 1), 188 | new Vector4(-1, 1, -1, 1), 189 | // far 190 | new Vector4(-1, -1, 1, 1), 191 | new Vector4( 1, -1, 1, 1), 192 | new Vector4( 1, 1, 1, 1), 193 | new Vector4(-1, 1, 1, 1) 194 | }; 195 | 196 | readonly static int[,] segments = { 197 | {0,1}, {1,2}, {2,3}, {3,0}, 198 | {4,5}, {5,6}, {6,7}, {7,4}, 199 | {0,4}, {1,5}, {2,6}, {3,7} 200 | }; 201 | 202 | List crossPoints; 203 | Matrix4x4 Matrix_I_VP; 204 | Matrix4x4 Matrix_VP; 205 | 206 | void GetCrossPoint() 207 | { 208 | if (crossPoints == null) 209 | crossPoints = new List(); 210 | crossPoints.Clear(); 211 | Matrix_VP = cam.projectionMatrix * cam.worldToCameraMatrix; 212 | Matrix_I_VP = Matrix_VP.inverse; 213 | for (int i = 0; i < 12; i++) 214 | { 215 | FrustrumPoint crossPoint = new FrustrumPoint(); 216 | if (IsSegmentIntersectOcean(segments[i, 0], segments[i, 1], OceanLevel, ref crossPoint)) 217 | { 218 | crossPoints.Add(crossPoint); 219 | } 220 | } 221 | //为了留出裕度，统统向外扩张5% 222 | Vector4 middle = Vector4.zero; 223 | foreach (var p in crossPoints) 224 | { 225 | middle += p.worldPos; 226 | } 227 | middle /= crossPoints.Count; 228 | for (int i = 0; i < crossPoints.Count; i++) 229 | { 230 | crossPoints[i].worldPos = (crossPoints[i].worldPos - middle) * (1 + outScale) + middle; 231 | } 232 | } 233 | 234 | Vector4 cameraToWorld(Vector4 localPos) 235 | { 236 | Vector4 res = Matrix_I_VP * localPos; 237 | res /= res.w; 238 | return res; 239 | } 240 | 241 | Vector4 worldToCamera(Vector4 worldSpace) 242 | { 243 | Vector4 res = Matrix_VP * worldSpace; 244 | res /= res.w; 245 | return res; 246 | } 247 | 248 | private bool IsSegmentIntersectOcean(int p1, int p2, float OceanLevel, ref FrustrumPoint crossPoint) 249 | { 250 | Vector4 a = cameraToWorld(frustrumCorner[p1]); 251 | Vector4 b = cameraToWorld(frustrumCorner[p2]); 252 | if ((a.y - OceanLevel) * (b.y - OceanLevel) > 0) return false; //同侧无交点 253 | var p = (OceanLevel - a.y) / (b.y - a.y); 254 | crossPoint = new FrustrumPoint(); 255 | crossPoint.worldPos = new Vector4( 256 | a.x + p * (b.x - a.x), 257 | OceanLevel, 258 | a.z + p * (b.z - a.z), 259 | 1); 260 | crossPoint.localPos = worldToCamera(crossPoint.worldPos); 261 | return true; 262 | } 263 | 264 | #endregion 265 | 266 | #region 网格创建 267 | readonly int MaxVerticeCount = 65000; 268 | int tDivide; 269 | Transform GridTransform; 270 | void CreateGrid() 271 | { 272 | int w = Screen.width, h = Screen.height; 273 | tDivide = 1; 274 | do 275 | { 276 | w = Screen.width / tDivide; 277 | h = Screen.height / tDivide; 278 | tDivide++; 279 | } 280 | while (w * h > MaxVerticeCount); 281 | Mesh mesh = MakeMesh(w, h); 282 | GameObject grid = new GameObject("ProjectedOceanMesh"); 283 | grid.transform.SetParent(transform); 284 | //扔在视锥体前方，防止被裁剪 285 | grid.transform.localPosition = new Vector3(0, 0, 10); 286 | MeshFilter mf = grid.AddComponent(); 287 | MeshRenderer mr = grid.AddComponent(); 288 | 289 | mf.sharedMesh = mesh; 290 | //mr.shadowCastingMode = UnityEngine.Rendering.ShadowCastingMode.Off; 291 | //mr.receiveShadows = false; 292 | //mr.motionVectorGenerationMode = MotionVectorGenerationMode.ForceNoMotion; 293 | mr.sharedMaterial = projectorMat; 294 | GridTransform = grid.transform; 295 | } 296 | 297 | 298 | // Make Mesh with given width and given height 299 | Mesh MakeMesh(int W, int H) 300 | { 301 | Vector3[] vertices = new Vector3[W * H]; 302 | Vector2[] texcoords = new Vector2[W * H]; 303 | int[] indices = new int[(W - 1) * (H - 1) * 6]; 304 | 305 | for (int x = 0; x < W; x++) 306 | { 307 | for (int y = 0; y < H; y++) 308 | { 309 | Vector2 uv = new Vector3((float)x / (float)(W - 1), (float)y / (float)(H - 1)); 310 | Vector3 pos = new Vector3(x, 0, y) * 0.00001f; 311 | texcoords[x + y * W] = uv; 312 | vertices[x + y * W] = pos; 313 | } 314 | } 315 | int num = 0; 316 | for (int x = 0; x < W - 1; x++) 317 | { 318 | for (int y = 0; y < H - 1; y++) 319 | { 320 | indices[num++] = x + y * W; 321 | indices[num++] = x + (y + 1) * W; 322 | indices[num++] = (x + 1) + y * W; 323 | 324 | indices[num++] = x + (y + 1) * W; 325 | indices[num++] = (x + 1) + (y + 1) * W; 326 | indices[num++] = (x + 1) + y * W; 327 | } 328 | } 329 | Mesh mesh = new Mesh(); 330 | mesh.vertices = vertices; 331 | mesh.uv = texcoords; 332 | mesh.triangles = indices; 333 | mesh.UploadMeshData(false); 334 | mesh.RecalculateNormals(); 335 | return mesh; 336 | } 337 | #endregion 338 | } 339 | -------------------------------------------------------------------------------- /Assets/Scripts/Bullshit.cs.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 376a035cc678f654d98b201c629a9020 3 | MonoImporter: 4 | externalObjects: {} 5 | serializedVersion: 2 6 | defaultReferences: [] 7 | executionOrder: 0 8 | icon: {instanceID: 0} 9 | userData: 10 | assetBundleName: 11 | assetBundleVariant: 12 | -------------------------------------------------------------------------------- /Assets/Scripts/WaveSpectrum.cs: -------------------------------------------------------------------------------- 1 | using System.Collections; 2 | using System.Collections.Generic; 3 | using UnityEngine; 4 | 5 | [RequireComponent(typeof(Bullshit))] 6 | public class WaveSpectrum : MonoBehaviour { 7 | [SerializeField] 8 | int N = 512; //傅里叶级数，需为2的N次幂 9 | [SerializeField] 10 | float L = 200f; //实际范围 11 | //波幅常数A 12 | [SerializeField] 13 | float amplitude = 0.0002f; 14 | //风速和风向 15 | [SerializeField] 16 | Vector2 windDir = new Vector2(32.0f, 32.0f); 17 | Vector2 windDir_normal; 18 | [SerializeField] 19 | float windVelocity; 20 | 21 | #region Mono 22 | void Start() 23 | { 24 | //统一N 25 | if (!Mathf.IsPowerOfTwo(N)) N = Mathf.NextPowerOfTwo(N); 26 | texButterfly = InitButterflyToTexture(); 27 | windDir_normal = windDir.normalized; 28 | FFTInit(); 29 | SpectrumInit(); 30 | MaterialInit(); 31 | OceanMatInit(); 32 | FresnelInit(); 33 | } 34 | 35 | // Update is called once per frame 36 | void Update () { 37 | float time = Time.time; 38 | SpectrumUpdate(time); 39 | FFTUpdate(bufferSpectrumH, bufferHFinal); 40 | FFTUpdate(bufferSpectrumDx, bufferDxFinal); 41 | FFTUpdate(bufferSpectrumDy, bufferDyFinal); 42 | Combine(); 43 | } 44 | 45 | void LateUpdate() 46 | { 47 | OceanLateUpdate(); 48 | } 49 | #endregion 50 | #region 菲涅尔预计算 51 | [SerializeField] 52 | Texture2D fresnelLookupTex; 53 | void FresnelInit() 54 | { 55 | fresnelLookupTex = new Texture2D(512, 1, TextureFormat.RFloat, false); 56 | float t = 1 / 511f; 57 | for (int i = 0; i < 512; i++) 58 | { 59 | float cosTheta = i * t; 60 | float schilick = Schilick(cosTheta); 61 | fresnelLookupTex.SetPixel(i, 0, new Color(schilick, 0, 0, 1)); 62 | } 63 | fresnelLookupTex.Apply(); 64 | } 65 | 66 | // Schilick近似:R(\theta)=R(0)+(1-R(0))(1-cos\theta_i)^5 67 | float Schilick(float cost) 68 | { 69 | float water_n = 1.333f; 70 | float R0 = (1 - water_n) / (1 + water_n); 71 | R0 *= R0; 72 | return R0 + (1 - R0) * Mathf.Pow(1 - cost, 5); 73 | } 74 | #endregion 75 | #region 蝶形运算 76 | [SerializeField] 77 | Texture2D texButterfly; 78 | Texture2D InitButterflyToTexture() 79 | { 80 | int logN = (int)(Mathf.Log(N, 2)); 81 | var butterflyData = new Vector2[N * logN]; 82 | //offset = 当前层数的偏移量 83 | //numIterations = 当前层数的总共有几个数据 84 | int offset = 1, numIterations = N >> 1; 85 | //逐行填充蝶形运算数据 86 | for (int row = 0; row < logN; row++) 87 | { 88 | int rowStart = row * N; 89 | //start和end用于记录本次录制的区域，毕竟蝶形操作越往后有效的数据越少 90 | int start = 0, end = 2 * offset; 91 | float singlePhase = 2f * Mathf.PI * numIterations / N; 92 | for (int i = 0; i < numIterations; i++) 93 | { 94 | int K = 0; 95 | for (int k = start; k < end; k += 2) 96 | { 97 | //计算需要用的w^k_n 98 | float phase = K * singlePhase; 99 | float cos = Mathf.Cos(phase); 100 | float sin = Mathf.Sin(phase); 101 | int hk = k >> 1; 102 | //总之就是随着递归阶段的上升，offset增加 103 | butterflyData[rowStart + hk].x = cos; 104 | butterflyData[rowStart + hk].y = -sin; 105 | butterflyData[rowStart + hk + offset].x = -cos; 106 | butterflyData[rowStart + hk + offset].y = sin; 107 | K++; 108 | } 109 | start += 4 * offset; 110 | end = start + 2 * offset; 111 | } 112 | numIterations >>= 1; 113 | offset <<= 1; 114 | } 115 | //填充进texture2D中，为保证进度，使用16位R和G 116 | texButterfly = new Texture2D(N, logN, TextureFormat.RGHalf, false); 117 | for (int y = 0; y < logN; y++) 118 | { 119 | for (int x = 0; x < N; x++) 120 | { 121 | int idx = y * N + x; 122 | texButterfly.SetPixel(x, y, new Color(butterflyData[idx].x, butterflyData[idx].y, 0)); 123 | } 124 | } 125 | texButterfly.Apply(false, true); 126 | return texButterfly; 127 | } 128 | #endregion 129 | #region Compute Shader调用 130 | private ComputeShader shaderSpectrum; 131 | [SerializeField] 132 | private RenderTexture bufferSpectrumH0; 133 | [SerializeField] 134 | private RenderTexture bufferSpectrumH; 135 | [SerializeField] 136 | private RenderTexture bufferSpectrumDx; 137 | [SerializeField] 138 | private RenderTexture bufferSpectrumDy; 139 | private int kernelSpectrumInit; 140 | private int kernelSpectrumUpdate; 141 | 142 | void SpectrumInit() 143 | { 144 | shaderSpectrum = (ComputeShader)Resources.Load("EncinoSpectrum", typeof(ComputeShader)); 145 | kernelSpectrumInit = shaderSpectrum.FindKernel("EncinoSpectrumInit"); 146 | kernelSpectrumUpdate = shaderSpectrum.FindKernel("EncinoSpectrumUpdate"); 147 | //准备h0频谱图 148 | bufferSpectrumH0 = new RenderTexture(N, N, 0, RenderTextureFormat.ARGBFloat); 149 | bufferSpectrumH0.enableRandomWrite = true; 150 | bufferSpectrumH0.Create(); 151 | bufferSpectrumH = CreateSpectrumUAV(); 152 | bufferSpectrumDx = CreateSpectrumUAV(); 153 | bufferSpectrumDy = CreateSpectrumUAV(); 154 | } 155 | 156 | void SpectrumUpdate(float time) 157 | { 158 | //第一步，计算h0 159 | shaderSpectrum.SetInt("N", N); 160 | shaderSpectrum.SetFloat("L", L); 161 | shaderSpectrum.SetFloats("windDir_normal", windDir_normal.x, windDir_normal.y); 162 | shaderSpectrum.SetFloat("windVelocity", windVelocity); 163 | shaderSpectrum.SetTexture(kernelSpectrumInit, "outputH0", bufferSpectrumH0); 164 | shaderSpectrum.Dispatch(kernelSpectrumInit, N / 8, N / 8, 1); 165 | //第二步，根据时间计算h' 166 | shaderSpectrum.SetFloat("time", time); 167 | shaderSpectrum.SetTexture(kernelSpectrumUpdate, "inputH0", bufferSpectrumH0); 168 | shaderSpectrum.SetTexture(kernelSpectrumUpdate, "outputH", bufferSpectrumH); 169 | shaderSpectrum.SetTexture(kernelSpectrumUpdate, "outputDx", bufferSpectrumDx); 170 | shaderSpectrum.SetTexture(kernelSpectrumUpdate, "outputDy", bufferSpectrumDy); 171 | shaderSpectrum.Dispatch(kernelSpectrumUpdate, N / 8, N / 8, 1); 172 | } 173 | 174 | RenderTexture CreateSpectrumUAV() 175 | { 176 | var uav = new RenderTexture(N, N, 0, RenderTextureFormat.ARGBFloat); 177 | uav.enableRandomWrite = true; 178 | uav.Create(); 179 | return uav; 180 | } 181 | #endregion 182 | #region FFT调用 183 | ComputeShader shaderFFT; 184 | RenderTexture bufferFFTTemp; 185 | int kernelFFTX = 0; 186 | int kernelFFTY = 1; 187 | [SerializeField] 188 | private RenderTexture bufferHFinal; 189 | [SerializeField] 190 | private RenderTexture bufferDxFinal; 191 | [SerializeField] 192 | private RenderTexture bufferDyFinal; 193 | 194 | void FFTInit() 195 | { 196 | shaderFFT = (ComputeShader)Resources.Load("EncinoFFT", typeof(ComputeShader)); 197 | int log2difference = (int)Mathf.Log(2, N / 256); 198 | kernelFFTX = log2difference * 2; 199 | kernelFFTY = kernelFFTX + 1; 200 | // 201 | bufferFFTTemp = new RenderTexture(N, N, 0, RenderTextureFormat.RGFloat); 202 | bufferFFTTemp.enableRandomWrite = true; 203 | bufferFFTTemp.Create(); 204 | 205 | bufferHFinal = CreateFinalTexture(); 206 | bufferDxFinal = CreateFinalTexture(); 207 | bufferDyFinal = CreateFinalTexture(); 208 | } 209 | 210 | void FFTUpdate(RenderTexture spectrum, RenderTexture output) 211 | { 212 | shaderFFT.SetTexture(kernelFFTX, "input", spectrum); 213 | shaderFFT.SetTexture(kernelFFTX, "inputButterfly", texButterfly); 214 | shaderFFT.SetTexture(kernelFFTX, "output", bufferFFTTemp); 215 | shaderFFT.Dispatch(kernelFFTX, 1, N, 1); 216 | shaderFFT.SetTexture(kernelFFTY, "input", bufferFFTTemp); 217 | shaderFFT.SetTexture(kernelFFTY, "inputButterfly", texButterfly); 218 | shaderFFT.SetTexture(kernelFFTY, "output", output); 219 | shaderFFT.Dispatch(kernelFFTY, N, 1, 1); 220 | } 221 | 222 | RenderTexture CreateFinalTexture() 223 | { 224 | var texture = new RenderTexture(N, N, 0, RenderTextureFormat.RFloat); 225 | texture.enableRandomWrite = true; 226 | texture.Create(); 227 | return texture; 228 | } 229 | #endregion 230 | #region 计算法线和偏移 231 | public float choppiness = 2f; 232 | Material combineMat; 233 | private RenderTexture bufferDisplacement; 234 | private RenderTexture bufferGradientFold; 235 | void MaterialInit() 236 | { 237 | combineMat = (Material)Resources.Load("Combine", typeof(Material)); 238 | bufferDisplacement = CreateCombinedTexture(); 239 | bufferGradientFold = CreateCombinedTexture(); 240 | } 241 | 242 | void Combine() 243 | { 244 | if (combineMat == null) return; 245 | combineMat.SetInt("N", N); 246 | combineMat.SetFloat("L", L); 247 | combineMat.SetFloat("invL", 1.0f / L); 248 | combineMat.SetTexture("inputH", bufferHFinal); 249 | combineMat.SetTexture("inputDx", bufferDxFinal); 250 | combineMat.SetTexture("inputDy", bufferDyFinal); 251 | Graphics.SetRenderTarget(new RenderBuffer[] { bufferDisplacement.colorBuffer, bufferGradientFold.colorBuffer }, bufferDisplacement.depthBuffer); 252 | GL.PushMatrix(); 253 | GL.LoadPixelMatrix(0, N, N, 0); 254 | GL.Viewport(new Rect(0, 0, N, N)); 255 | combineMat.SetPass(0); 256 | GL.Begin(GL.QUADS); 257 | GL.TexCoord2(0, 0); 258 | GL.Vertex3(0, 0, 0); 259 | GL.TexCoord2(1, 0); 260 | GL.Vertex3(N, 0, 0); 261 | GL.TexCoord2(1, 1); 262 | GL.Vertex3(N, N, 0); 263 | GL.TexCoord2(0, 1); 264 | GL.Vertex3(0, N, 0); 265 | GL.End(); 266 | GL.PopMatrix(); 267 | Graphics.SetRenderTarget(null); 268 | } 269 | 270 | RenderTexture CreateCombinedTexture() 271 | { 272 | var texture = new RenderTexture(N, N, 0, RenderTextureFormat.ARGBFloat); 273 | texture.enableRandomWrite = true; 274 | texture.useMipMap = true; 275 | texture.autoGenerateMips = true; 276 | texture.filterMode = FilterMode.Bilinear; 277 | texture.wrapMode = TextureWrapMode.Repeat; 278 | texture.Create(); 279 | return texture; 280 | } 281 | #endregion 282 | #region 展示 283 | Material oceanMat; 284 | void OceanMatInit() 285 | { 286 | oceanMat = (Material)Resources.Load("Ocean", typeof(Material)); 287 | } 288 | 289 | void OceanLateUpdate() 290 | { 291 | oceanMat.SetTexture("_NormalTex", bufferGradientFold); 292 | oceanMat.SetTexture("_DispTex", bufferDisplacement); 293 | oceanMat.SetFloat("L", L); 294 | oceanMat.SetFloat("_NormalTexelSize", 2.0f * L / N); 295 | oceanMat.SetFloat("Amplitude", amplitude); 296 | oceanMat.SetFloat("OceanLevel", GetComponent().OceanLevel); 297 | oceanMat.SetTexture("_FresnelLookup", fresnelLookupTex); 298 | } 299 | #endregion 300 | } 301 | -------------------------------------------------------------------------------- /Assets/Scripts/WaveSpectrum.cs.meta: -------------------------------------------------------------------------------- 1 | fileFormatVersion: 2 2 | guid: 47e88b7e7b3aeb14fba1f827d8708107 3 | MonoImporter: 4 | externalObjects: {} 5 | serializedVersion: 2 6 | defaultReferences: [] 7 | executionOrder: 0 8 | icon: {instanceID: 0} 9 | userData: 10 | assetBundleName: 11 | assetBundleVariant: 12 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | Apache License 2 | Version 2.0, January 2004 3 | http://www.apache.org/licenses/ 4 | 5 | TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION 6 | 7 | 1. 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# Unity GPU FFTOcean 2 | 3 | NOTE: I did this at 2017.4; 4 | 5 | Inspired by https://github.com/speps/GX-EncinoWaves 6 | 7 | Original paper is : 8 | 9 | > Christopher J. Horvath. 2015. 10 | > [Empirical directional wave spectra for computer graphics.](http://dl.acm.org/authorize?N90195) 11 | > In Proceedings of the 2015 Symposium on Digital Production (DigiPro '15), 12 | > Los Angeles, Aug. 8, 2015, pp. 29-39. 13 | 14 | And I read these : 15 | 16 | > Tessendorf J . Simulating Ocean Water[J]. Simulating Nature Realistic & Interactive Techniques Siggraph, 1999. 17 | 18 | You can read my blog to see how does project works: 19 | 20 | [破晓的知乎专栏](https://zhuanlan.zhihu.com/p/53241188) 21 | 22 | ## Features 23 | 24 | * Project Mesh from screen to world space 25 | 26 | ## License 27 | 28 | Apache License, Version 2.0 --------------------------------------------------------------------------------