| Re: [AD] Component ordering and mixing color depths |
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Eric Botcazou wrote:
No, simply that one might expect a 32-bit RGBA sprite to be an enhanced 32-bit
RGB sprite, so that every drawing operation which works for the latter works
for the former as well, in particular the plain draw_sprite.
Do you mean that we should also allow for color conversion in all
Allegro function from 32-bpp to any other arbitrary bpp bitmap?
I mean that, if a 32-bit RGBA format was supported by the hardware, its layout
would highly likely match that of the 32-bit RGB format. Therefore we would
have to use the 32-bit RGB order of the card for our 32-bit RGBA format in
order to benefit from hardware-acceleration.
Absolutely. However, it doesn't help in the case of 16-bpp screen modes,
where all video/system bitmaps are also 16-bpp, but 32-bpp RGBA sprites
are, well, 32-bpp.
--
- Robert Jr Ohannessian
http://bob.allegronetwork.com/
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