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AppGameKit Classic Chat / SetObjectImage speed

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nz0
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Posted: 1st Apr 2013 17:05
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I was wondering how expensive using SetObjectImage is realtime? At the moment, I preset any objects, but if I wanted to change (or even animate textures) would this be considered an expensive operation?

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Mobiius
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Posted: 1st Apr 2013 18:03
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Try it and see...

As long as all the images are already loaded I can't expect it to take too big of a framerate hit.

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nz0
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Posted: 1st Apr 2013 19:18
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It'll be fine for me, but I was thinking about others with lower spec hardware.

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Markus
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Posted: 2nd Apr 2013 14:25
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theoretical it should only exchange the image pointer.
alternative maybe its possible to change the uv pos. and use a one big texture with include some small pics.
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Van B
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Posted: 2nd Apr 2013 16:20
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To do that Markus, there's the subimages command - which would let you specify several sub images inside 1 big image, each of these get's it's own internal filename, and then the image can be 'loaded' from that as if it was a whole, single image.

Sprite frames are handy, but for objects the sub images system should be pretty good. We use this in our project and I can't say that I've noticed any issues with performance, probably best to be sensible though - like keep track of which subimage is applied, and only apply a new subimage if it changes... that sort of thing.

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Paul Johnston
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Posted: 2nd Apr 2013 17:56
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Calling SetObjectImage will not impact performance.
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nz0
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Posted: 2nd Apr 2013 22:11
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That's what I like - definitive answer
It's good, as I would like to explore animated textures without cost to performance.

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Markus
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Posted: 2nd Apr 2013 22:12
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@Van B
i mean like minecraft, with uv positions you can display a part from
a texture. but then the problem is the max. texture resolution,
not really good for long animations.
using much images i think about which RAM will be use,
the ram at motherboard or graphics card,if the texture is not in the
graphics card it will surely copy to it. maybe a impact at small devices depending on hardware architecture.
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