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Re: [Public WebGL] about texImage2D and UNPACK_PREMULTIPLY_ALPHA_WEBGL
- To: Kenneth Russell <kbr@google.com>
- Subject: Re: [Public WebGL] about texImage2D and UNPACK_PREMULTIPLY_ALPHA_WEBGL
- From: Steve Baker <steve@sjbaker.org>
- Date: Mon, 06 Dec 2010 18:06:40 -0600
- Cc: Benoit Jacob <bjacob@mozilla.com>, public webgl <public_webgl@khronos.org>
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On 12/06/2010 04:43 PM, Kenneth Russell wrote:
> On Mon, Dec 6, 2010 at 2:34 PM, Benoit Jacob <bjacob@mozilla.com> wrote:
>
>> Also, I don't understand what "semantically" means in the above sentence.
>>
> I was probably just being wordy. Removed.
>
I kinda assumed it meant that an image might (for example) have an
implied alpha value without a literal alpha channel...like maybe if a
particular color was used for chroma-keying or something. The
"semantics" of the RGB channels imply an alpha value.
But we don't need it - simpler is better.
-- Steve
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