Re: [AD] ex_pixelformat broken?

[Thomas Fjellstrom <tfjellstrom@xxxxxxxxxx>]

On Fri March 13 2009, Elias Pschernig wrote:
> On Thu, 2009-03-12 at 23:40 +0100, Elias Pschernig wrote:
> > > I've tracked it down to ogl_lock_region(). I believe after reading the
> > > texture data into a memory buffer it's missing a conversion to the
> > > format specified in the parameter list.
> >
> > I see - the formats OpenGL can't convert to directly, we probably should
> > do that (not the ones it already can). I'll see if I can fix it.
>
> Ok, many commits later I think ex_pixelformat works now 100% correctly.
>
> There is one problem remaining here when drawing into one of the
> following 4 formats using FBO:
>
> ALLEGRO_PIXEL_FORMAT_RGB_555
> ALLEGRO_PIXEL_FORMAT_RGBA_5551
> ALLEGRO_PIXEL_FORMAT_ARGB_1555
> ALLEGRO_PIXEL_FORMAT_BGR_555
>
> Uploading textures in these formats in client memory works correctly
> though, and also formats like ALLEGRO_PIXEL_FORMAT_RGB_565 work.
> Therefore I believe it's a bug in my OpenGL drivers and not with
> ex_pixelformat/Allegro.
>
> Would be interesting if everyone could run ex_pixelformat with OpenGL
> and FBO, select ANY to the left, and the above 4 formats to the right,
> and report the results.

Is every image supposed to look more or less the same? All of the 555 formats seem to be wrong. That includes "15", which seems to be a duplicate for RGB555.

Running Xorg on NVidia 180.29.

> > Btw., do we really need to support formats like 5551 or 4444? OpenGL
> > doesn't seem to have them, and from what I see in DX 10 they also were
> > removed (DX 9 has them though).
>
> Well, re-reading the OpenGL specs, I was able to tell it about all those
> formats after all. So until we get a DX 10 driver, all formats are
> supported now with DX as well as OpenGL.
>
> --
> Elias Pschernig <elias@xxxxxxxxxx>
>
>
> ---------------------------------------------------------------------------
>--- Apps built with the Adobe(R) Flex(R) framework and Flex Builder(TM) are
> powering Web 2.0 with engaging, cross-platform capabilities. Quickly and
> easily build your RIAs with Flex Builder, the Eclipse(TM)based development
> software that enables intelligent coding and step-through debugging.
> Download the free 60 day trial. http://p.sf.net/sfu/www-adobe-com

--
Thomas Fjellstrom
tfjellstrom@xxxxxxxxxx