[lazarus] Bitmap transparency?
nc-gaertnma at netcologne.de
Mon Nov 10 14:55:51 EST 2003
On Mon, 10 Nov 2003 08:07:09 +0100
Micha Nelissen <M.Nelissen at student.tue.nl> wrote:
> I think I can fill the RawImageDesc fields except palette, and I don't
> know what to do with RedPrec, RedShift, etc..
You need to find out the color format of the device/bitmap for this.
32 bits per pixel, 8 bit for red, 8 for green, 8 for blue, 8 bit for
Let assume a pixel has the following double word: $RRGGBB00
Depth = 24
BitsPerPixel = 32
RedPrec = 8
RedShift = 24
GreenPrec = 8
GreenShift = 16
BluePrec = 8
BlueShift = 8
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