
302 IV Mobile Devices
(a) Example scene with maximum three
layers per tile
(b) The same scene with maximum two layers
per tile
Figure 5.4. Tiles can be layered to support more blended layers.
5.3.3 Sprite-Tile intersection
The relatively low complexity of our tile layout in After Burner Climax (eight
vertical tiles) and the small amount of clouds to render (a few dozens) allowed us
to use a simple (SIMD) axis aligned rectangle-rectangle intersection test on CPU
with no performance problem.
When using a higher density grid, it could prove to be useful to use a rasteri-
zation strategy as suggested by [Olsson and Assarsson 11] in the context of tiled
shading. ...