Added an FPS performance graph and updated the existing performance graphs to correspond with the change of API. Also moved the unit block from the interval -0.5 to 0.5f to the interval 0.0 to 1.0 on all dimensions. This allowed me to remove the offset addition in the blocks.vert shader, in ChunkManager.getBlock(Vector3, int), and ChunkManager.getBlocks(Vector3, int).