Mattias Gaertner escreveu:
On Wed, 17 Feb 2010 04:39:26 -0300
Luiz Americo Pereira Camara <luiz...@oi.com.br> wrote:
Mattias Gaertner escreveu:
On Tue, 16 Feb 2010 17:15:37 -0300
Luiz Americo Pereira Camara <luiz...@oi.com.br> wrote:
or
colGray be redefined as colGray : TFPColor = (Red: $8080; Green:
$8080; Blue: $8080; Alpha: alphaOpaque) ??
Yes, although this rarely makes a difference.
It does.
See below.
This info will help to fix http://bugs.freepascal.org/view.php?id=15793
IMO the bug report is misleading. Converting a TFPColor to RGB looses
bits.
The bug is not about converting to RGB. See the attached example in
bugreport.
SetCol := colGray;
Img.Colors[0,0] := SetCol;
GetCol := Img.Colors[0,0];
SetCol <> GetCol
That's exactly what my long response explained.
Why do you expect that the 48bit color constants can be assigned to
24bit images without loss? Is this somewhere wrongly documented?
fpimage is not documented at all AFAIK.
It's not loosing bits if your information, in previous mail, about
TFPColor format is correct.
Defining colGray, and related, as TFPColor = (Red: $8080; Green: $8080;
Blue: $8080; Alpha: alphaOpaque) would make it work.
The point is that the TFPColor constants are inconsistently defined.
Luiz
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