init

.gitignore

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+# This .gitignore file should be placed at the root of your Unity project directory
+
+/[Ll]ibrary/
+/[Tt]emp/
+/[Oo]bj/
+/[Bb]uild/
+/[Bb]uild_IL2CPP/
+/[Bb]uilds/
+/[Ll]ogs/
+/[Ss]creenshots/
+/[Rr]ecordings/
+
+# Never ignore Asset meta data
+!/[Aa]ssets/**/*.meta
+
+# Uncomment this line if you wish to ignore the asset store tools plugin
+# /[Aa]ssets/AssetStoreTools*
+
+# TextMesh Pro files
+[Aa]ssets/TextMesh*Pro/
+
+# Visual Studio cache directory
+.vs/
+
+# Gradle cache directory
+.gradle/
+
+Build*.zip
+
+# Autogenerated VS/MD/Consulo solution and project files
+ExportedObj/
+.consulo/
+*.csproj
+*.unityproj
+*.sln
+*.suo
+*.tmp
+*.user
+*.userprefs
+*.pidb
+*.booproj
+*.svd
+*.pdb
+*.mdb
+*.opendb
+*.VC.db
+
+# Unity3D generated meta files
+*.pidb.meta
+*.pdb.meta
+*.mdb.meta
+
+# Unity3D generated file on crash reports
+sysinfo.txt
+
+# Builds
+*.apk
+*.unitypackage
+
+Tiled*Assets
+
+
+# Crashlytics generated file
+crashlytics-build.properties
+/.idea/.idea.Punch/.idea/statistic.xml
+/buildversion.txt
+
+# Common IntelliJ Platform excludes
+
+# User specific
+**/.idea/**/workspace.xml
+indexLayout.xml
+**/.idea/**/tasks.xml
+**/.idea/shelf/*
+**/.idea/dictionaries
+**/.idea/httpRequests/
+
+# Sensitive or high-churn files
+**/.idea/**/dataSources/
+**/.idea/**/dataSources.ids
+**/.idea/**/dataSources.xml
+**/.idea/**/dataSources.local.xml
+**/.idea/**/sqlDataSources.xml
+**/.idea/**/dynamic.xml
+
+# Rider
+# Rider auto-generates .iml files, and contentModel.xml
+**/.idea/**/*.iml
+**/.idea/**/contentModel.xml
+**/.idea/**/modules.xml
+/Assets/Deform/EditorResources/DeformSettings.asset
+Assets/Plugins/Sirenix/Demos/Sample - RPG Editor.unitypackage.meta
+Assets/Plugins/Sirenix/Demos/Editor Windows.unitypackage.meta
+Assets/Plugins/Sirenix/Demos/Custom Drawers.unitypackage.meta
+Assets/Plugins/Sirenix/Demos/Custom Attribute Processors.unitypackage.meta
+Assets/Imported/AmplifyImpostors/Plugins/EditorResources/RenderPipelinePackages/ImpostorsURP.unitypackage.meta
+Assets/Imported/AmplifyImpostors/Plugins/EditorResources/RenderPipelinePackages/ImpostorsLWRP.unitypackage.meta
+Assets/Imported/AmplifyImpostors/Plugins/EditorResources/RenderPipelinePackages/ImpostorsHDRP.unitypackage.meta
+Assets/Imported/AmplifyImpostors/Examples/SamplesURP.unitypackage.meta
+Assets/Imported/AmplifyImpostors/Examples/SamplesLWRP.unitypackage.meta
+Assets/Imported/AmplifyImpostors/Examples/SamplesHDRP.unitypackage.meta
+UserSettings/Layouts/CurrentMaximizeLayout.dwlt
+UserSettings/Layouts/default-2021.dwlt
+ProjectSettings/RiderScriptEditorPersistedState.asset

Assets/Compute/feedback.comp

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+#version 460 core
+
+#define CHUNK_SIZE 80
+
+layout (local_size_x = 8, local_size_y = 8, local_size_z = 8) in;
+
+struct GeometryData {
+    uint vertexCount;
+    uint indexCount;
+};
+
+struct ChunkFeedback {
+    uint vertexOffset;
+    uint vertexCount;
+    uint indexOffset;
+    uint indexCount;
+};
+
+layout (std430, binding = 1) readonly buffer VoxelBuffer {
+    int data[];
+} uVoxels;
+
+layout (std430, binding = 6) buffer FeedbackBuffer {
+    GeometryData data;
+} uFeedback;
+
+layout (std430, binding = 7) writeonly buffer ChunkFeedbackBuffer {
+    ChunkFeedback data[];
+} uChunkFeedback;
+
+shared uint sVertexCount;
+shared uint sIndexCount;
+
+uint to1D(in uvec3 pos) {
+    return pos.x + CHUNK_SIZE * (pos.y + CHUNK_SIZE * pos.z);
+}
+
+int to1D(in ivec3 pos) {
+    return pos.x + CHUNK_SIZE * (pos.y + CHUNK_SIZE * pos.z);
+}
+
+uvec3 to3D(in uint idx) {
+    uint x = idx % CHUNK_SIZE;
+    uint y = (idx / CHUNK_SIZE) % CHUNK_SIZE;
+    uint z = idx / (CHUNK_SIZE * CHUNK_SIZE);
+
+    // uint z = idx / (CHUNK_SIZE * CHUNK_SIZE);
+    // idx -= (z * CHUNK_SIZE * CHUNK_SIZE);
+    // uint y = idx / CHUNK_SIZE;
+    // uint x = idx % CHUNK_SIZE;
+    return uvec3(x, y, z);
+}
+
+bool hasVoxel(in ivec3 coord) {
+    if (coord.x < 0 || coord.x >= CHUNK_SIZE || 
+        coord.y < 0 || coord.y >= CHUNK_SIZE ||
+        coord.z < 0 || coord.z >= CHUNK_SIZE) {
+        return false;
+    }
+
+    int idx = to1D(coord);
+    return uVoxels.data[idx] > 0;
+}
+
+void main() {
+    if (gl_LocalInvocationIndex == 0) {
+        sVertexCount = 0;
+        sIndexCount = 0;
+    }
+
+    barrier();
+
+    uint globalVoxelIndex = to1D(gl_GlobalInvocationID);
+
+    if (uVoxels.data[globalVoxelIndex] > 0) {
+        ivec3 coord = ivec3(gl_GlobalInvocationID);
+
+        uint vertexCount = 0;
+        uint indexCount = 0;
+
+        if (!hasVoxel(coord + ivec3(1, 0, 0))) {
+            vertexCount += 4;
+            indexCount += 6;
+        }
+
+        if (!hasVoxel(coord + ivec3(-1, 0, 0))) {
+            vertexCount += 4;
+            indexCount += 6;
+        }
+
+        if (!hasVoxel(coord + ivec3(0, 1, 0))) {
+            vertexCount += 4;
+            indexCount += 6;
+        }
+
+        if (!hasVoxel(coord + ivec3(0, -1, 0))) {
+            vertexCount += 4;
+            indexCount += 6;
+        }
+
+        if (!hasVoxel(coord + ivec3(0, 0, 1))) {
+            vertexCount += 4;
+            indexCount += 6;
+        }
+
+        if (!hasVoxel(coord + ivec3(0, 0, -1))) {
+            vertexCount += 4;
+            indexCount += 6;
+        }
+
+        atomicAdd(sVertexCount, vertexCount);
+        atomicAdd(sIndexCount, indexCount);
+    }
+
+    barrier();
+
+    if (gl_LocalInvocationIndex == 0) {
+        uint vertexOffset = atomicAdd(uFeedback.data.vertexCount, sVertexCount);
+        uint indexOffset = atomicAdd(uFeedback.data.indexCount, sIndexCount);
+
+        uint index = gl_WorkGroupID.x + 10 * (gl_WorkGroupID.y + 10 * gl_WorkGroupID.z);
+
+        uChunkFeedback.data[index].vertexOffset = vertexOffset;
+        uChunkFeedback.data[index].vertexCount = sVertexCount;
+        uChunkFeedback.data[index].indexOffset = indexOffset;
+        uChunkFeedback.data[index].indexCount = sIndexCount;
+    }
+}