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Re: [Public WebGL] How to handle partially failing getContext()


Thanks for the quick reply. I'll report it as a bug then.


On Wed, Jun 8, 2011 at 10:36 AM, Cedric Vivier <cvivier@mozilla.com> wrote:
> On Wed, Jun 8, 2011 at 15:24, Mikko Mononen <mikko@tinkercad.com> wrote:
>> It is not clear to me based on the spec if that is correct behavior or
>> a bug. The spec says that the attributes should not cause the
>> getContext() to fail, but should I test for webgl error and retry? The
>> spec states that I cannot change the attribs on second try, though.
> Yes this is a bug. There is no such thing as a "partially failing" context.
> For some reason the browser seems unable to get a context with alpha disabled.
> Fwiw the browser should be allowed to create an underlying GL context
> nevertheless alpha:false if that's what the hardware want.
> I still think we should revisit the recently discussed issue of
> enforcing no side-effects when the WebGL context attributes differs
> from its underlying GL context (possibly through state tracking to
> disable writing to alpha, depth, or stencil buffers when they are
> disabled in WebGL context).
> Regards,

Mikko Mononen, Software Engineer
http://tinkercad.comĀ - Solid modeling for artists & makers

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