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BOOK: Professional WebGL Programming: Developing 3D Graphics for the Web
This is the forum to discuss the Wrox book Professional WebGL Programming: Developing 3D Graphics for the Web by Andreas Anyuru; ISBN: 978-1-1199-6886-3
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Old February 9th, 2013, 07:06 AM
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Default Animations not working in Chrome

I found that the animations starting from chapter 6 were not working in Chrome, the cube that was supposed to be animated never appeared, in fact it did but only for a single frame before it animated itself far off screen.

The reason is due to a change in the time value returned when requestAnimFrame is called. It is simple to fix by replacing
Code:
  if (currentTime === undefined) {
    currentTime = Date.now();
  }
with
Code:
  if (currentTime === undefined) {
    currentTime = performance.now();
  }
in the draw method. Animations will then work in Chrome and Firefox will continue to work as before.

More information can be found from html5rocks.com.

It appears that this is a change in the standard rather than an error in the authors source code.





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