change(/wiki/surface-extraction): add some content and TODO's

Author: Longor1996

content/wiki/surface-extraction/index.md

@@ -7,8 +7,34 @@ categories = ["rendering"]
 tags = ["rendering", "meshing"]
 +++
 
+**Surface extraction** (commonly called **meshing**), is the process of generating
+a [mesh](https://en.wikipedia.org/wiki/Polygon_mesh) or point-cloud representing
+*just* the reachable/visible surface of the volume, which can then be
+[rasterized](https://en.wikipedia.org/wiki/Rasterisation) into visible pixels.
+
 {{ stub_notice() }}
 
+{{ todo_notice(body="Amount of geometry per mesh *vs* amount of meshes.") }}
+
+{{ todo_notice(body="Reducing frequency of remeshing and bandwidth limits.") }}
+
+{{ todo_notice(body="Offloading meshing to other threads and cloning volume data.") }}
+
+{{ todo_notice(body="Performance optimizations and pitfalls.") }}
+
+## Rasterization Performance
+
+The performance of rasterizing a meshed volume,
+mainly depends on the following factors:
+
+- The amount of vertices/facelets in view of a camera,  
+  even if they're *not* actually visible on screen.
+- The data-size of each *individual* vertex/facelet,  
+  due to memory bandwidth and caching limitations.
+- The area of pixels where any geometry overlaps: *overdraw*.
+
+{{ todo_notice(body="Explain further?") }}
+
 ## References
 
 - <https://0fps.net/2012/06/30/meshing-in-a-minecraft-game/>