| Re: [AD] ALLEGRO_DISPLAY_OPTIONS documentation |
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On Sat, 2009-02-21 at 08:00 -0700, Trent Gamblin wrote:
> I'm trying to implement the new ALLEGRO_DISPLAY_OPTIONS
> in D3D but I'm having trouble figuring them out. I don't
> know what half of the enum values mean let alone their
> possible values. Could we get some documentation on this
> enum please?
They are the same as in AllegroGL. A few of them should probably be
removed/renamed.
AllegroGL docs are here:
http://allegrogl.sourceforge.net/docs/group__settings.html
So:
ALLEGRO_RED_SIZE,
ALLEGRO_GREEN_SIZE,
ALLEGRO_BLUE_SIZE,
ALLEGRO_ALPHA_SIZE,
ALLEGRO_RED_SHIFT,
ALLEGRO_GREEN_SHIFT,
ALLEGRO_BLUE_SHIFT,
ALLEGRO_ALPHA_SHIFT,
The 8 above are identical to selecting the pixel format.
ALLEGRO_ACC_RED_SIZE,
ALLEGRO_ACC_GREEN_SIZE,
ALLEGRO_ACC_BLUE_SIZE,
ALLEGRO_ACC_ALPHA_SIZE,
Those are the format of the accumulation buffer.
ALLEGRO_STEREO,
Whether the display uses left/right stereo buffers. Not sure any drivers
supports this :P
ALLEGRO_AUX_BUFFERS,
Number of auxiliary buffers. Probably not a useful option either.
ALLEGRO_COLOR_SIZE,
ALLEGRO_DEPTH_SIZE,
ALLEGRO_STENCIL_SIZE,
Number of bits in color, depth and stencil buffer.
ALLEGRO_SAMPLE_BUFFERS,
Whether to use multi-sampling (1) or not (0).
ALLEGRO_SAMPLES,
How many samples per pixel to use if the above is 1, else 0.
ALLEGRO_RENDER_METHOD,
This should be renamed or removed, in AllegroGL it was used to force HW
acceleration, but I don't see why you would have to do that. If my
software rendering is fast enough to run the game, why prohibit it?
ALLEGRO_FLOAT_COLOR,
ALLEGRO_FLOAT_DEPTH,
Whether to use floating point for the color and depth buffers.
ALLEGRO_DOUBLEBUFFERED,
This is the same as you can do already with the normal double buffer
flag.
ALLEGRO_SWAP_METHOD,
Not sure about this one, AllegroGL doesn't seem to have it - probably we
can remove it.
--
Elias Pschernig <elias@xxxxxxxxxx>