Hello,
I working with alpha blending. On QT it works fine. On GTK2 I get
"Depth: 24" when executing "GetDescriptionFromDevice(0)" (on QT -> 32).
Why GTK2 "screen" not supports alpha?
It is strange because if I load PNG with transparency (image with
gradient) into TImage then I clearly can see alpha blending effect on
GTK2 when image is diplayed. Maybe I must to use
"GetDescriptionFromDevice" not from screen? From where then?
There is full "DataDescription" on GTK2:
Format: ricfRGBA
Width: 3
Height: 3
Depth: 24
BitOrder: riboBitsInOrder
ByteOrder: riboLSBFirst
LineOrder: riloTopToBottom
LineEnd: rileDWordBoundary
BitsPerPixel: 32
RedPrec: 8
RedShift: 16
GreenPrec: 8
GreenShift: 8
BluePrec: 8
BlueShift: 0
AlphaPrec: 0
AlphaShift: 0
MaskBitsPerPixel: 1
PaletteColorCount: 0
System Kubuntu 16.10; lazarus 1.9.0; fpc 3.0.0.
P.S. sorry for my bad English.
--
Valdas Jankūnas
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