> So why are you keen to retain the current behaviour? 

The logical behavior of left-right and up-down mirroring is useful in
applications such as back projection, head-up displays and two-sided
see-through displays, as well as potentially in other reflected displays.

If you delete a behavior like this, on which some applications rely, then it
would cause many problems in some domains.

I don't think it is safe to delete a feature on the assumption that it is
not used.

I have no evidence that the current behavior is broken. If it is in some
implementations then those should either be fixed or should return
DFB_UNSUPPORTED or some other informative error that would let the
application know not to use these features.

Chris
========================
Chris Bore
BORES Signal Processing
[EMAIL PROTECTED]
www.bores.com
Tel:    +44 1483 740138
Mobile: +44 7921 153 219 
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Phil Endecott
Sent: 08 October 2007 23:56
To: directfb-dev
Subject: Re: [directfb-dev] Text rotation

Denis Oliver Kropp wrote:
> Denis Oliver Kropp wrote:
>> Phil Endecott wrote:
>>> Denis Oliver Kropp wrote:
>> Logical should also stay. In unrotated case negative width means 
>> right to left, in case of 90 degree clock wise negative height would 
>> indicate that.
>
> BTW, I don't know if right to left is working at all :)

Exactly - I suspect that no-one is using it and/or it doesn't work.  So why
are you keen to retain the current behaviour?  It is rather simpler for me
to always return a "valid" rectangle.


Phil.





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