#+HTML_HEAD: </style>
* General
-- This is a subproject of [[https://www3.svjatoslav.eu/projects/sixth/][Sixth]]
+- This is a subproject of parent project: [[https://www3.svjatoslav.eu/projects/sixth/][Sixth]].
- This program is free software: you can redistribute it and/or modify
it under the terms of the [[https://www.gnu.org/licenses/lgpl.html][GNU Lesser General Public License]] as
+ Antialiazing. Would improve text readability. If antialiazing is too
expensive for every frame, it could be used only for last frame
before animations become still and waiting for user input starts.
+** Render only visible polygons
++ This would significantly reduce RAM <-> CPU traffic.
-+ Render only visible polygons.
- + This would significantly reduce RAM <-> CPU traffic.
++ General algorithm description:
+ + For each horizontal scanline:
+ + sort polygon edges from left to right
+ + while iterating and drawing pixels over screen X axis (left to
+ right) track next appearing/disappearing polygons.
+ + For each polygon edge update Z sorted active polygons list.
+ + Only draw pixel from the top-most polygon.
+ + Only if polygon area is transparent/half-transparent add
+ colors from the polygons below.
- + General algorithm description:
- + For each horizontal scanline:
- + sort polygon edges from left to right
- + while iterating and drawing pixels over screen X axis (left to
- right) track next appearing/disappearing polygons.
- + For each polygon edge update Z sorted active polygons list.
- + Only draw pixel from the top-most polygon.
- + Only if polygon area is transparent/half-transparent add
- colors from the polygons below.
++ As a bonus, this would allow to track which polygons are really
+ visible in the final scene for each frame.
- + As a bonus, this would allow to track which polygons are really
- visible in the final scene for each frame.
+ + Such information allows further optimizations:
- + Such information allows further optimizations:
+ + Dynamic geometry simplification:
+ + Dynamically detect and replace invisible objects from the
+ scene with simplified bounding box.
- + Dynamic geometry simplification:
- + Dynamically detect and replace invisible objects from the
- scene with simplified bounding box.
+ + Dynamically replace boudnig box with actual object once it
+ becomes visible.
- + Dynamically replace boudnig box with actual object once it
- becomes visible.
-
- + Dynamically unload unused textures from RAM.
+ + Dynamically unload unused textures from RAM.