Random things

src/main/java/me/cortex/voxy/client/core/VoxelCore.java

@@ -87,7 +87,6 @@ public class VoxelCore {
         Capabilities.init();//Ensure clinit is called
 
         this.renderer = new RenderService(this.world, this.serviceThreadPool);
-        Logger.info("Using " + this.renderer.getClass().getSimpleName());
         this.postProcessing = new PostProcessing();
 
         Logger.info("Voxy core initialized");
@@ -430,7 +429,7 @@ public class VoxelCore {
                 }
             }
             long delta = (System.currentTimeMillis()-start);
-            System.out.println("Time "+delta+"ms count: " + completedCounter.get() + " avg per mesh: " + ((double)delta/completedCounter.get()));
+            System.out.println("Time "+delta+"ms count: " + completedCounter.get() + " avg per mesh: " + ((double)delta/completedCounter.get()) + "ms");
             if (false)
                 break;
         }

src/main/java/me/cortex/voxy/common/voxelization/VoxelizedSection.java

@@ -10,11 +10,19 @@ public class VoxelizedSection {
     public int x;
     public int y;
     public int z;
-    final long[] section;
+    public final long[] section;
     public VoxelizedSection(long[] section) {
         this.section = section;
     }
 
+    public static int getBaseIndexForLevel(int lvl) {
+        int offset = lvl==1?(1<<12):0;
+        offset |= lvl==2?(1<<12)|(1<<9):0;
+        offset |= lvl==3?(1<<12)|(1<<9)|(1<<6):0;
+        offset |= lvl==4?(1<<12)|(1<<9)|(1<<6)|(1<<3):0;
+        return offset;
+    }
+
     public VoxelizedSection setPosition(int x, int y, int z) {
         this.x = x;
         this.y = y;

src/main/java/me/cortex/voxy/common/voxelization/WorldConversionFactory.java

@@ -92,7 +92,7 @@ public class WorldConversionFactory {
                     }
                     pc[0] = blockId;
                 } else {
-                    Logger.error("Unknown palette type: " + vp);
+                    throw new IllegalStateException("Unknown palette type: " + vp);
                 }
             }
         }

src/main/java/me/cortex/voxy/common/world/WorldEngine.java

@@ -136,6 +136,25 @@ public class WorldEngine {
 
             int nonAirCountDelta = 0;
             boolean didStateChange = false;
+
+
+            {//Do a bunch of funny math
+                int baseVIdx = VoxelizedSection.getBaseIndexForLevel(lvl);
+                int baseSec = bx | (bz << 5) | (by << 10);
+                int secMsk = 0xF >> lvl;
+                secMsk |= (secMsk << 5) | (secMsk << 10);
+                var secD = worldSection.data;
+                for (int i = 0; i < 0xFFF >> (lvl * 3); i++) {
+                    int secIdx = Integer.expand(i, secMsk)+baseSec;
+                    long newId = section.section[baseVIdx+i];
+                    long oldId = secD[secIdx]; secD[secIdx] = newId;
+                    nonAirCountDelta += Mapper.isAir(oldId) == Mapper.isAir(newId) ? 0 : (Mapper.isAir(newId) ? -1 : 1);
+                    didStateChange |= newId != oldId;
+                }
+            }
+            /*
+            //This loop can be heavily optimized, the get and set can be extracted and manually done
+            // the 3 for loops can be replaced by a single loop that iterates over a bitmask
             for (int y = by; y < (16>>lvl)+by; y++) {
                 for (int z = bz; z < (16>>lvl)+bz; z++) {
                     for (int x = bx; x < (16>>lvl)+bx; x++) {
@@ -143,10 +162,9 @@ public class WorldEngine {
                         long oldId = worldSection.set(x, y, z, newId);
                         nonAirCountDelta += Mapper.isAir(oldId)==Mapper.isAir(newId)?0:(Mapper.isAir(newId)?-1:1 );
                         didStateChange |= newId != oldId;
-                        //if (newId != oldId) {VoxyCommon.breakpoint();}
-                    }
                     }
                 }
+            }*/
 
             if (nonAirCountDelta != 0) {
                 worldSection.addNonEmptyBlockCount(nonAirCountDelta);