Re: [PATCH] OMAP3630:DSS2:Enable Pre-Multiplied Alpha Support

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Y, Kishore wrote:

 >  As per TRM, this bit is valid only for ARGB formats and experts
 suggested that we can safely assume pre-multiplied data always in real
 world

 I asked a few experts here, and they weren't so sure, and neither am I.

 I don't see any problems making this feature configurable, but there may
 be problems if it's hardcoded. So, it should be configurable. I think
 the default should be the same as on 3430, so that they will work
 similarly.

  Tomi
I haven't considered the backward compatibility with 3430 apps.
I will make this configurable.

And please defaulting to non-pre-multiplied. All 3430 apps will be
non-pre-multiplied as this is what the 3430 supports only.

So apps need to be actively changed to use pre-multiplied.

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