final Stopwatch watch = Stopwatch.createStarted();
for (int x = 0; x < ChunkConstants.SIZE_X; x++) {
for (int z = 0; z < ChunkConstants.SIZE_Z; z++) {
for (int y = verticalOffset; y < verticalOffset + meshHeight; y++) {
Biome biome = chunkView.getBiome(x, y, z);
Block block = chunkView.getBlock(x, y, z);
if (block != null && !block.isInvisible()) {
generateBlockVertices(chunkView, mesh, x, y, z, biome);
}