On Donnerstag 25 Januar 2007 22:30, Ville Syrjälä wrote:
> On Thu, Jan 25, 2007 at 06:54:02PM +0000, Mark Adams wrote:
> > > But now I've a real strange situation:
> > > For clearing the OSD (full transparent) I've to use Clear(r, b, g, a) with
> > > Clear(0, 0, 0, 0) which is "normal" transparent black.
> > >
> > > But for OSD drawing into the surface I've to invert alpha:
> > > transparent black is (0, 0, 0, 0xff) solid black is (0, 0, 0, 0) .
> >
> > I was just looking into that, thinking it was probably an obvious typo
> > on my part but I'm not sure it is.
> >
> > What's puzzling me is that
> >
> > Clear(r,g,b,a)
> >
> > is equivalent to
> >
> > SetColor(r,g,b,a)
> > SetDrawingFlags(DSDRAW_NOFX)
> > FillRectangle(...)
> >
> > If you're seeing a difference, I can only assume that you're using
> > some other drawing flags, e.g. DSDRAW_BLEND. If that's the case then
> > your drawing operations will be using the software fallback since we
> > can't do hardware accelerated blending on AiRGB surfaces.
> >
> > So it looks to me like the problem is in the software renderer, which
> > is not my area of expertise I'm afraid.
>
> I found a bug in AiRGB color handling in the sw rendering code, and
> commited a fix to CVS. Stefan, let me know if the problem still
> persists.
Thanks, but no, the situation is still the same.
To see video after OSD is closed, I still have to use (check for VIA
should be dropped):
/* ---------------------------------------------------------------------
* In case of of AiRGB we have to reset clearAlpha value for VIA
*/
if (fmt == DSPF_AiRGB && isVIAUnichrome)
clearAlpha = 0;
And at OSD close (with: "#define COLORKEY 0,0,0") :
tmpSurface->Clear(COLORKEY,clearAlpha); //clear and
tmpSurface->Flip(); // Flip the field
Same behaviour is shown when I use the following in ClearOSD():
//tmpSurface->Clear(COLORKEY,clearAlpha); //clear and
tmpSurface->SetColor(COLORKEY,clearAlpha);
tmpSurface->SetBlittingFlags(DSBLIT_NOFX);
tmpSurface->FillRectangle(0,0, Xres, Yres);
tmpSurface->Flip(); // Flip the field
I guess thats an indicator (but no proove) that I'm _not_ using
SW rendering for Clear() .
--
Stefan Lucke
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