kicad-developers team mailing list archive

[Marius Kintel <kintel@...>]

On Apr 1, 2008, at 11:03 AM, emmedics4 wrote:

> I can confirm that wxOR is not supported in wxMAC with CG as 
> confirms dc.cpp:1985
> GR_COPY is enough for us now and draws all correctly.
> I think that the correct path with CoreGraphics is the Alpha Channel 
> and also this have to
> work with GR_COPY.

I have a question (maybe I just don't get it though):
What does really GR_OR do?
In other words: What is the expected result for OR'ing graphics with 
existing graphics?

As far as I understand, this is pretty much a bogus operation in all 
cases except 1-bit displays or bitmaps.
For colored graphics, it would just OR together whatever data is 
present, with pretty random results.
..or maybe it is a workaround for missing blend/alpha functionality in 
some GUI toolkits?

~/= Marius

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