osgFX::Effect is awkward to use because of the lazy-definition of passes, no support for compileGLObjects, useless 'Technique' abstraction and having to define silly methods like 'effectAuthor()'
Handling the multi-pass rendering inside the Drawable also avoids redundant culling tests against the same bounding box for each pass.
- Consistent triangle alignment, fixes a noticable crack near the census and excise office. Note that alignment is still not the same as vanilla. Vanilla uses a weird diagonal pattern. I hope there aren't more trouble spots that will force us to replicate vanilla, but at least we can do that now.
- Fixes several blending issues and cell border seams
- Fix map render to use the terrain bounding box instead of an arbitrary height
- Different LODs are now properly connected instead of using skirts
- Support self shadowing
- Normals and colors are stored in the vertices instead of a texture, this enables per-vertex lighting which should improve performance, fix compatibility issues due to the PS getting too large and mimic vanilla better
- Support a fixed function fallback (though the splatting shader usually performs better)
- Designed for distant land support - test: https://www.youtube.com/watch?v=2wnd9EuPJIY - we can't really enable this yet due to depth precision issues when using a large view distance