Q: Why do TTCFont Glyphs need an alpha channel?


[squeak-dev] Q: Why are TTCFont Glyphs forms of depth 32?

Hi Bert,

Thank you for your quick answer.
So the next question is:

Q: Why do TTCFont Glyphs need an alpha channel?
Why wouldn't just having transparent pixels suffice?
When/where is this extra ability used?
Can you point me to a good case?

Bert Freudenberg bert at freudenbergs.de 
Fri Jul 25 04:22:53 UTC 2008 

***
>Am 25.07.2008 um 00:16 schrieb Jerome Peace:
>
>> Hi all,
>>
>>
>> Q: Why are TTCFont Glyphs forms of depth 32?
>>
>
>A 32 bpp form is TSTTCPW if you want an alpha channel. An 8 bpp form  
>would suffice, but require more exotic bitblt rules to be interpreted  
>as an alpha channel.
>
>- Bert -
>
***




      
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