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Multi-thread optimisation algorithm

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NGnius (Graham) 2020-09-26 15:55:36 -04:00
parent d2a2ce52f0
commit 84fc330b12
2 changed files with 217 additions and 113 deletions
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6
Pixi/Common/ColorSpaceUtility.cs
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@ -19,7 +19,7 @@ namespace Pixi.Common
{ {
public static class ColorSpaceUtility public static class ColorSpaceUtility
{ {
private const float optimal_delta = 0.2f; private const float optimal_delta = 0.1f;
private static Dictionary<BlockColor, float[]> colorMap = null; private static Dictionary<BlockColor, float[]> colorMap = null;
@ -50,14 +50,14 @@ namespace Pixi.Common
if (geometricClosest < optimal_delta) if (geometricClosest < optimal_delta)
{ {
#if DEBUG #if DEBUG
Logging.MetaLog($"Final delta ({closest[0]},{closest[1]},{closest[2]}) t:{geometricClosest}"); //Logging.MetaLog($"Final delta ({closest[0]},{closest[1]},{closest[2]}) t:{geometricClosest}");
#endif #endif
return c; return c;
} }
} }
} }
#if DEBUG #if DEBUG
Logging.MetaLog($"Final delta ({closest[0]},{closest[1]},{closest[2]}) t:{geometricClosest}"); //Logging.MetaLog($"Final delta ({closest[0]},{closest[1]},{closest[2]}) t:{geometricClosest}");
#endif #endif
return c; return c;
} }

218
Pixi/Common/CommandRoot.cs
View file

@ -1,7 +1,9 @@
using System; using System;
using System.Collections.Generic; using System.Collections.Generic;
using System.Diagnostics;
using System.Linq; using System.Linq;
using System.Runtime.CompilerServices; using System.Runtime.CompilerServices;
using System.Threading;
using UnityEngine; using UnityEngine;
using Unity.Mathematics; using Unity.Mathematics;
using Svelto.ECS; using Svelto.ECS;
@ -10,6 +12,7 @@ using GamecraftModdingAPI;
using GamecraftModdingAPI.Blocks; using GamecraftModdingAPI.Blocks;
using GamecraftModdingAPI.Commands; using GamecraftModdingAPI.Commands;
using GamecraftModdingAPI.Utility; using GamecraftModdingAPI.Utility;
using Svelto.DataStructures;
namespace Pixi.Common namespace Pixi.Common
{ {
@ -41,12 +44,60 @@ namespace Pixi.Common
public Dictionary<int, Importer[]> importers = new Dictionary<int, Importer[]>(); public Dictionary<int, Importer[]> importers = new Dictionary<int, Importer[]>();
public static ThreadSafeDictionary<int, bool> optimisableBlockCache = new ThreadSafeDictionary<int, bool>();
public const float BLOCK_SIZE = 0.2f; public const float BLOCK_SIZE = 0.2f;
public const float DELTA = BLOCK_SIZE / 2048; public const float DELTA = BLOCK_SIZE / 2048;
public static int OPTIMISATION_PASSES = 2; public static int OPTIMISATION_PASSES = 2;
public static int GROUP_SIZE = 64;
// optimisation algorithm constants
private static float3[] cornerMultiplicands1 = new float3[8]
{
new float3(1, 1, 1),
new float3(1, 1, -1),
new float3(-1, 1, 1),
new float3(-1, 1, -1),
new float3(-1, -1, 1),
new float3(-1, -1, -1),
new float3(1, -1, 1),
new float3(1, -1, -1),
};
private static float3[] cornerMultiplicands2 = new float3[8]
{
new float3(1, 1, 1),
new float3(1, 1, -1),
new float3(1, -1, 1),
new float3(1, -1, -1),
new float3(-1, 1, 1),
new float3(-1, 1, -1),
new float3(-1, -1, 1),
new float3(-1, -1, -1),
};
private static int[][] cornerFaceMappings = new int[][]
{
new int[] {0, 1, 2, 3}, // top
new int[] {2, 3, 4, 5}, // left
new int[] {4, 5, 6, 7}, // bottom
new int[] {6, 7, 0, 1}, // right
new int[] {0, 2, 4, 6}, // back
new int[] {1, 3, 5, 7}, // front
};
private static int[][] oppositeFaceMappings = new int[][]
{
new int[] {6, 7, 4, 5}, // bottom
new int[] {0, 1, 6, 7}, // right
new int[] {2, 3, 0, 1}, // top
new int[] {4, 5, 2, 3}, // left
new int[] {1, 3, 5, 7}, // front
new int[] {0, 2, 4, 6}, // back
};
public CommandRoot() public CommandRoot()
{ {
CommandManager.AddCommand(this); CommandManager.AddCommand(this);
@ -144,7 +195,7 @@ namespace Pixi.Common
{ {
for (int pass = 0; pass < OPTIMISATION_PASSES; pass++) for (int pass = 0; pass < OPTIMISATION_PASSES; pass++)
{ {
OptimiseBlocks(ref optVONs); OptimiseBlocks(ref optVONs, (pass + 1) * GROUP_SIZE);
#if DEBUG #if DEBUG
Logging.MetaLog($"Optimisation pass {pass} completed"); Logging.MetaLog($"Optimisation pass {pass} completed");
#endif #endif
@ -179,7 +230,66 @@ namespace Pixi.Common
} }
private void OptimiseBlocks(ref List<ProcessedVoxelObjectNotation> optVONs) private void OptimiseBlocks(ref List<ProcessedVoxelObjectNotation> optVONs, int chunkSize)
{
// Reduce blocks to place to reduce lag while placing and from excessive blocks in the world.
// Blocks are reduced by grouping similar blocks that are touching (before they're placed)
// multithreaded because this is an expensive (slow) operation
int item = 0;
ProcessedVoxelObjectNotation[][] groups = new ProcessedVoxelObjectNotation[optVONs.Count / chunkSize][];
Thread[] tasks = new Thread[groups.Length];
while (item < groups.Length)
{
groups[item] = new ProcessedVoxelObjectNotation[chunkSize];
optVONs.CopyTo(item * chunkSize, groups[item], 0, chunkSize);
int tmpItem = item; // scope is dumb
tasks[item] = new Thread(() =>
{
groups[tmpItem] = groupBlocksBestEffort(groups[tmpItem], tmpItem);
});
tasks[item].Start();
item++;
}
#if DEBUG
Logging.MetaLog($"Created {groups.Length} + 1? groups");
#endif
// final group
ProcessedVoxelObjectNotation[] finalGroup = null;
Thread finalThread = null;
if (optVONs.Count > item * chunkSize)
{
//finalGroup = optVONs.GetRange(item * GROUP_SIZE, optVONs.Count - (item * GROUP_SIZE)).ToArray();
finalGroup = new ProcessedVoxelObjectNotation[optVONs.Count - (item * chunkSize)];
optVONs.CopyTo(item * chunkSize, finalGroup, 0, optVONs.Count - (item * chunkSize));
finalThread = new Thread(() =>
{
finalGroup = groupBlocksBestEffort(finalGroup, -1);
});
finalThread.Start();
}
// gather results
List<ProcessedVoxelObjectNotation> result = new List<ProcessedVoxelObjectNotation>();
for (int i = 0; i < groups.Length; i++)
{
#if DEBUG
Logging.MetaLog($"Waiting for completion of task {i}");
#endif
tasks[i].Join();
result.AddRange(groups[i]);
}
if (finalThread != null)
{
#if DEBUG
Logging.MetaLog($"Waiting for completion of final task");
#endif
finalThread.Join();
result.AddRange(finalGroup);
}
optVONs = result;
}
private static ProcessedVoxelObjectNotation[] groupBlocksBestEffort(ProcessedVoxelObjectNotation[] blocksToOptimise, int id)
{ {
// a really complicated algorithm to determine if two similar blocks are touching (before they're placed) // a really complicated algorithm to determine if two similar blocks are touching (before they're placed)
// the general concept: // the general concept:
@ -194,17 +304,25 @@ namespace Pixi.Common
// this means it's not safe to assume that block A's common face (top) can be swapped with block B's non-common opposite face (top) to get the merged block // this means it's not safe to assume that block A's common face (top) can be swapped with block B's non-common opposite face (top) to get the merged block
// //
// note2: this does not work with blocks which aren't cubes (i.e. any block where rotation matters) // note2: this does not work with blocks which aren't cubes (i.e. any block where rotation matters)
// TODO multithread this expensive operation try
int item = 0;
while (item < optVONs.Count)
{ {
#if DEBUG
Stopwatch timer = Stopwatch.StartNew();
#endif
FasterList<ProcessedVoxelObjectNotation> optVONs = new FasterList<ProcessedVoxelObjectNotation>(blocksToOptimise);
int item = 0;
while (item < optVONs.count - 1)
{
#if DEBUG
Logging.MetaLog($"({id}) Now grouping item {item}/{optVONs.count} ({100f * item/(float)optVONs.count}%)");
#endif
bool isItemUpdated = false; bool isItemUpdated = false;
ProcessedVoxelObjectNotation itemVON = optVONs[item]; ProcessedVoxelObjectNotation itemVON = optVONs[item];
if (isOptimisableBlock(itemVON.block)) if (isOptimisableBlock(itemVON.block))
{ {
float3[] itemCorners = calculateCorners(itemVON); float3[] itemCorners = calculateCorners(itemVON);
int seeker = item + 1; // despite this, assume that seeker goes thru the entire list (not just blocks after item) int seeker = item + 1; // despite this, assume that seeker goes thru the entire list (not just blocks after item)
while (seeker < optVONs.Count) while (seeker < optVONs.count)
{ {
if (seeker == item) if (seeker == item)
{ {
@ -262,21 +380,23 @@ namespace Pixi.Common
item++; item++;
} }
} }
#if DEBUG
timer.Stop();
Logging.MetaLog($"({id}) Completed best effort grouping of range in {timer.ElapsedMilliseconds}ms");
#endif
return optVONs.ToArray();
}
catch (Exception e)
{
Logging.MetaLog($"({id}) Exception occured...\n{e.ToString()}");
} }
private float3[] calculateCorners(ProcessedVoxelObjectNotation von) return blocksToOptimise;
}
[MethodImpl(MethodImplOptions.AggressiveInlining)]
private static float3[] calculateCorners(ProcessedVoxelObjectNotation von)
{ {
float3[] cornerMultiplicands = new float3[8]
{
new float3(1, 1, 1),
new float3(1, 1, -1),
new float3(-1, 1, 1),
new float3(-1, 1, -1),
new float3(-1, -1, 1),
new float3(-1, -1, -1),
new float3(1, -1, 1),
new float3(1, -1, -1),
};
float3[] corners = new float3[8]; float3[] corners = new float3[8];
Quaternion rotation = Quaternion.Euler(von.rotation); Quaternion rotation = Quaternion.Euler(von.rotation);
float3 rotatedScale = rotation * von.scale; float3 rotatedScale = rotation * von.scale;
@ -284,24 +404,14 @@ namespace Pixi.Common
// generate corners // generate corners
for (int i = 0; i < corners.Length; i++) for (int i = 0; i < corners.Length; i++)
{ {
corners[i] = trueCenter + BLOCK_SIZE * (cornerMultiplicands[i] * rotatedScale / 2); corners[i] = trueCenter + BLOCK_SIZE * (cornerMultiplicands1[i] * rotatedScale / 2);
} }
return corners; return corners;
} }
private void updateVonFromCorners(float3[] corners, ref ProcessedVoxelObjectNotation von) [MethodImpl(MethodImplOptions.AggressiveInlining)]
private static void updateVonFromCorners(float3[] corners, ref ProcessedVoxelObjectNotation von)
{ {
float3[] cornerMultiplicands = new float3[8]
{
new float3(1, 1, 1),
new float3(1, 1, -1),
new float3(1, -1, 1),
new float3(1, -1, -1),
new float3(-1, 1, 1),
new float3(-1, 1, -1),
new float3(-1, -1, 1),
new float3(-1, -1, -1),
};
float3 newCenter = sumOfFloat3Arr(corners) / corners.Length; float3 newCenter = sumOfFloat3Arr(corners) / corners.Length;
float3 newPosition = newCenter; float3 newPosition = newCenter;
Quaternion rot = Quaternion.Euler(von.rotation); Quaternion rot = Quaternion.Euler(von.rotation);
@ -311,26 +421,9 @@ namespace Pixi.Common
//Logging.MetaLog($"Updated VON scale {von.scale} (absolute {rotatedScale})"); //Logging.MetaLog($"Updated VON scale {von.scale} (absolute {rotatedScale})");
} }
private int[][] findMatchingCorners(float3[] corners1, float3[] corners2) [MethodImpl(MethodImplOptions.AggressiveInlining)]
private static int[][] findMatchingCorners(float3[] corners1, float3[] corners2)
{ {
int[][] cornerFaceMappings = new int[][]
{
new int[] {0, 1, 2, 3}, // top
new int[] {2, 3, 4, 5}, // left
new int[] {4, 5, 6, 7}, // bottom
new int[] {6, 7, 0, 1}, // right
new int[] {0, 2, 4, 6}, // back
new int[] {1, 3, 5, 7}, // front
};
int[][] oppositeFaceMappings = new int[][]
{
new int[] {6, 7, 4, 5}, // bottom
new int[] {0, 1, 6, 7}, // right
new int[] {2, 3, 0, 1}, // top
new int[] {4, 5, 2, 3}, // left
new int[] {1, 3, 5, 7}, // front
new int[] {0, 2, 4, 6}, // back
};
float3[][] faces1 = facesFromCorners(corners1); float3[][] faces1 = facesFromCorners(corners1);
float3[][] faces2 = facesFromCorners(corners2); float3[][] faces2 = facesFromCorners(corners2);
for (byte i = 0; i < faces1.Length; i++) for (byte i = 0; i < faces1.Length; i++)
@ -355,7 +448,8 @@ namespace Pixi.Common
} }
// this assumes the corners are in the order that calculateCorners outputs // this assumes the corners are in the order that calculateCorners outputs
private float3[][] facesFromCorners(float3[] corners) [MethodImpl(MethodImplOptions.AggressiveInlining)]
private static float3[][] facesFromCorners(float3[] corners)
{ {
return new float3[][] return new float3[][]
{ {
@ -368,7 +462,8 @@ namespace Pixi.Common
}; };
} }
private int[] matchFace(float3[] face1, float3[] face2) [MethodImpl(MethodImplOptions.AggressiveInlining)]
private static int[] matchFace(float3[] face1, float3[] face2)
{ {
int[] result = new int[4]; int[] result = new int[4];
byte count = 0; byte count = 0;
@ -396,7 +491,8 @@ namespace Pixi.Common
return new int[0]; return new int[0];
} }
private float3 sumOfFloat3Arr(float3[] arr) [MethodImpl(MethodImplOptions.AggressiveInlining)]
private static float3 sumOfFloat3Arr(float3[] arr)
{ {
float3 total = float3.zero; float3 total = float3.zero;
for (int i = 0; i < arr.Length; i++) for (int i = 0; i < arr.Length; i++)
@ -408,12 +504,19 @@ namespace Pixi.Common
} }
[MethodImpl(MethodImplOptions.AggressiveInlining)] [MethodImpl(MethodImplOptions.AggressiveInlining)]
private bool isOptimisableBlock(BlockIDs block) private static bool isOptimisableBlock(BlockIDs block)
{ {
return block.ToString().EndsWith("Cube", StringComparison.InvariantCultureIgnoreCase); if (optimisableBlockCache.ContainsKey((int) block))
{
return optimisableBlockCache[(int) block];
} }
private string float3ArrToString(float3[] arr) bool result = block.ToString().EndsWith("Cube", StringComparison.InvariantCultureIgnoreCase);
optimisableBlockCache[(int) block] = result;
return result;
}
private static string float3ArrToString(float3[] arr)
{ {
string result = "["; string result = "[";
foreach (float3 f in arr) foreach (float3 f in arr)
@ -434,10 +537,11 @@ namespace Pixi.Common
catch (Exception e) catch (Exception e)
{ {
#if DEBUG #if DEBUG
Logging.CommandLogError("RIP\n" + e); Logging.CommandLogError("RIP Pixi\n" + e);
#else #else
Logging.CommandLogError("Pixi failed (reason: " + e.Message + ")"); Logging.CommandLogError("Pixi failed (reason: " + e.Message + ")");
#endif #endif
Logging.LogWarning("Pixi Error\n" + e);
} }
} }
} }