Apply 8bit pixmap to a 16bit buffer

[Daniele M.]

Hi!

I hope someone could help me

I'm playing with cool FreeType library;

I have an 8bit pixmap (i suppose it should holds the values i have
combine with OR with my screen backbuffer in order to calculate
correctly the pixel color).

My problem is: my display backbuffer is 16bit (565), so when i apply
my pixmap with something like this:

pixel[x][y]=pixel[x][y] | pixmap[a,b]

it doesn't work very well (actually the pixel isn't changed as it
should )

I think the main problem is: pixel is a 16bit value, pixmap instead is
an 8bit value...
I think i should do a sort of conversion for pixmap...but i can't
figure how...

Please helppp!

Thanks in advance for your time.

Regards.

 

[Sam]

I think the main problem is: pixel is a 16bit value, pixmap instead is
an 8bit value...
I think i should do a sort of conversion for pixmap...but i can't
figure how...

Please helppp!

This has nothing to do with C++, the language, but rather some specific
library. You should try looking for a newsgroup or a mailing list that
discusses that specific graphics library, rather than a newsgroup for
language-related question.


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[Daniele M.]

This has nothing to do with C++, the language, but rather some specific
library. You should try looking for a newsgroup or a mailing list that
discusses that specific graphics library, rather than a newsgroup for
language-related question.

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1KScarica

Mmmmh...i supposed a 8bit to 16bit conversion could be related to c++,
graphic library or not
Btw..i will search for it!
Thanks.