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tcaudilllg
Dragonmaster


Joined: 20 Jun 2002
Posts: 1729
Location: Cedar Bluff, VA

PostPosted: Sat Jul 14, 2012 10:54 pm    Post subject: My goodness, HTML5 CANVAS is slow. [quote]

I wonder why?

It takes like 25 seconds to render 16,384 32x32 tiles on my P4 3.0 Ghz.

Part of the reason may be that I'm using an interpreted tile format (although all that work should be completed in less than a second on a 3 Ghz machine), but I think another reason may be an internal bottleneck in Firefox itself. Of course I have to create a separate image for each tile (to load it in), but those images aren't rendered.

I wonder if there's a useless delay in between CANVAS draws? Because I'm painting each tile separately.
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BDZ
Slightly Deformed Faerie Princess


Joined: 11 Jan 2007
Posts: 32
Location: Wisconsin

PostPosted: Mon Jul 23, 2012 12:02 am    Post subject: [quote]

A 3.0 Ghz P4 is horribly outdated hardware. You shouldn't make sweeping statements about the performance of modern technologies when you are testing them on horribly outdated hardware.
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Nodtveidt
Demon Hunter


Joined: 11 Nov 2002
Posts: 786
Location: Camuy, PR

PostPosted: Thu Jul 26, 2012 1:21 am    Post subject: [quote]

Shouldn't modern technologies be faster?
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tcaudilllg
Dragonmaster


Joined: 20 Jun 2002
Posts: 1729
Location: Cedar Bluff, VA

PostPosted: Thu Aug 02, 2012 11:25 pm    Post subject: [quote]

It's pretty slow on my cousin's comp too, and while I forget what exactly it is (it's Vista era), it doesn't have issues running any game out there.

The real problem with HTML5's poor performance is that it can't pass muster on a phone. 3.0 ghz may be slow but it's like a speed demon compared to what's running on today's Droids. If you can't compete on the mobile market you don't have anything.
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XMark
Guitar playin' black mage


Joined: 30 May 2002
Posts: 870
Location: New Westminster, BC, Canada

PostPosted: Wed Jan 22, 2014 11:07 pm    Post subject: [quote]

It's all about browser implementation. Earlier browsers were extremely inefficient in their canvas interpretations, but I think the newest version of every browser is now using hardware acceleration and the situation is much better, though there is still a lot of room left for improvement. Firefox seems to be the best browser for HTML5 Canvas rendering speed at the moment. Chrome had held the lead in Canvas speed for quite a while until recently.

I've even seen my HTML5 games running full speed on Firefox's mobile version on my Galaxy S4 (note to self: add touch controls)
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Mark Hall
Abstract Productions
I PLAYS THE MUSIC THAT MAKES THE PEOPLES FALL DOWN!
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tcaudilllg
Dragonmaster


Joined: 20 Jun 2002
Posts: 1729
Location: Cedar Bluff, VA

PostPosted: Fri Jan 24, 2014 6:51 pm    Post subject: [quote]

I was able to improve the speed markedly by pre-loading everything and sticking to tilesets instead of tiles with independent graphics. The bottleneck, it turns out, was the HDD.
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Adam
Mage


Joined: 30 Dec 2002
Posts: 416
Location: Australia

PostPosted: Tue Jan 28, 2014 5:11 pm    Post subject: [quote]

You can also get some speedy performance with straight DOM elements especially on mobile.

http://www.tricedesigns.com/2013/03/22/phonegap-legends-a-sample-game-app/
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