Spine rendering performance

[Ezelia]

Hi,

 

I'm presently using a frame by frame animations for a game and want to replace it with Spine.

I want to know if I will not have a performance problem knowing that I have many characters moving around (up to 30 characters per screen).

 

since spine use rotations and this is relatively costy with canvas, can this affect the performance ? does Pixi use any caching for Spine frames to avoid rotating operations each frame ?

[Chris]

Are you talking about ctx.rotate() ?

I had no performance issues with using it heavily in the past.

[Ezelia]

what do you mean with heavily

if I take my example : 30 characters with 8 rotations each I end up with 240 rotations per frame, and I suppose each rotation will need a save/restore context ... do you think that this will not cause performance issues ?

I just don't want to invest in Spin animations if I know it'll not work

[Mat Groves]

Hello!

 

PIxi is optimised for rotations to a certain degree (haha) - sin and cos operations are cached. Also Pixi does not use save and restore context - it uses setTransform with a pre-calculated matrix so should be ok. 

[Ezelia]

PIxi is optimised for rotations to a certain degree (haha) -

 

Nice one

 

this seems good to me, I'll go for Spine then ... will require a lot of work for transition but the reusability of Spine is perfect for my games.

[Chris]

Well, you aren't really rotating anything but the coordinate system. One would have to make a jsPerf but I doubt it to be very performance heavy.

[Rudrabhoj Bhati]

what do you mean with heavily

if I take my example : 30 characters with 8 rotations each I end up with 240 rotations per frame, and I suppose each rotation will need a save/restore context ... do you think that this will not cause performance issues ?

I just don't want to invest in Spin animations if I know it'll not work

I thought Spine can generate animation in bunch of images? I I think I read it somehwere on there website. Then why not use the images it generate as normal frame based animation?