"The graphics improvements in this game update include
tangent light space vector normalization for per-pixel mesh
rendering, GLSL program management, GLSL normal/specular mapping
for dynamic lighting, GLSL specular lighting, new water shaders,
distortion shaders to basic water, faster image filtering, and new
glass effects with a semi-true reflection. There are also
performance increases in this release through calculating bounding
boxes at load file along, occlusion culling of entities, and moving
the vertex lerping inside of a texture-mapping loop."