On Tue, Oct 5, 2010 at 10:30 PM, Gregg Tavares (wrk) <firstname.lastname@example.org
> I'm sure this discussion already happened so it would be nice to know the
> thoughts that lead to it to default to BROWSER_DEFAULT_WEBGL but without
> knowing that discussion it seems like it should default to NONE.
> The reason is, most developers coming from OpenGL will not even bother to
> look at the docs. So, they'll write their app without setting this flag, it
> will appear to work on a particular browser because that browser happens to
> be doing what they expect (no conversion). Only later will they find out
> that it's not working in other browsers.
> If it defaults to NONE, the worst that will happen is the colors will be off
> if compared to the same image displayed in an img tag but their app will
> still work. They can then look it up and find out how to get their colors
> correct but at least in the meantime their app works everywhere.
> That would seem to match many of the other decisions to prevent apps from
> breaking across implementations.
> On Tue, Oct 5, 2010 at 11:15 AM, Kenneth Russell <email@example.com
>> At the recent Khronos F2F the WebGL working group resolved to add a
>> new pixel storage parameter UNPACK_COLORSPACE_CONVERSION_WEBGL,
>> applying to texImage2D and texSubImage2D uploads. The default value is
>> BROWSER_DEFAULT_WEBGL, and it can be set to NONE to disable all
>> colorspace conversion by the browser (if applicable to the file type
>> being uploaded -- in particular, PNG).
>> The rationale is that there are certain situations in which the four
>> channels of RGBA textures may contain non-color information, and an
>> upload path preserving the original values in the texture is needed.
>> The WebGL spec and IDL have been updated with this change, and a bug
>> has been filed with the OpenGL registry to add the two new enums.
>> Please post any comments to the list.
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