Height fixes

src/main/java/com/volmit/iris/gen/TopographicTerrainProvider.java

@@ -340,6 +340,11 @@ public abstract class TopographicTerrainProvider extends ParallelTerrainProvider
 			}
 		}
 
+		if(Math.max(height, fluidHeight) > 255)
+		{
+			return height;
+		}
+		
 		block = sliver.get(Math.max(height, fluidHeight));
 
 		// Decorate True Surface

src/main/java/com/volmit/iris/gen/atomics/AtomicSliver.java

@@ -87,7 +87,18 @@ public class AtomicSliver
 		{
 			return null;
 		}
-		FastBlockData b = block[h < 256 ? h : 256];
+
+		if(h > 255)
+		{
+			h = 255;
+		}
+
+		if(h < 0)
+		{
+			h = 0;
+		}
+
+		FastBlockData b = block[h];
 		last = M.ms();
 
 		if(b == null)

src/main/java/com/volmit/iris/gen/v2/IrisTerrainGenerator.java

@@ -27,7 +27,7 @@ public class IrisTerrainGenerator
 	{
 		complex.flash(seed, dimension, data);
 	}
-	
+
 	public void generate(int x, int z, Hunk<BlockData> blocks, Hunk<Biome> biomes)
 	{
 		// RNG rng = new RNG((((long) x) << 32) | (z & 0xffffffffL));