Ask for more information about setScale

Rickyngk

Dear,

After finishing my game, I've just do a funny thing.

In my game, I used one sprite to contain everything. I decide to scale it to some ratio such as 2x, 0.5x by using: setScale(rx, ry). As the result, graphics of game are displayed well, however, fps is really nightmare, just about 4-5 fps in iPad2. (it run 60fps without scale)

Did I make something wrong here?

atilim

Your sprite contains a TileMap as a child, right? If tile map detects a complex transformation (like scale and rotation) it disables its efficient culling algorithm. Currently, is setScale a must for your game?

Rickyngk

Hi atilim,
Yep, there're several tilemaps inside. So lucky, setScale is not need for my game. It's just a test.

Rickyngk

In future, I need this feature.
When I tested in single small tilemap (about 21x16), fps is still acceptable. But it's a big problem with 20x10000

atilim

great. I've implemented TileMap culling for setScale a few days ago. But this restriction is still in effect for rotation.

Rickyngk

Yeah, that's a good new. Thank @atilim !

Scouser

Squeaky wheel time:
@atilim any chance of a simple rectangular glScissor implementation in next release

atilim

@Scouser lets leave it to the future release. Because I'm already behind of my schedule for this release. ehe ehe

techdojo