[directfb-users] Re: cle266 layer and pixel format problem

[Denis Oliver Kropp <dok@directfb.org>]

Quoting Selwyn Tang:
> Hi all,
> 
> I am developing a dfb application on a epia-m board, with cle266 kernel
> fb driver (viafb) and directfb support (cle266vgaio). dfbinfo shows two
> layers, one is the fbdev primary layer and the other cle266.
> 
> The problem is, if I CreateSurface from the super interface, it uses the
> primary layer, but without flipping. And I cannot successfully, say,
> FillRectangle on that surface. On the other hand, if I GetDisplayLayer
> for layer id 1, which is the cle266 and supports flipping, and
> GetSurface from this layer, I can FillRectangle on it with flipping,
> but, however, cannot RenderTo a jpeg to the surface due to the unknown
> pixel format 201007. This pixel format problem does not occur in the
> first scenario since when I CreateSurface, I can use desc to ask for a
> valid pixel format, like ARGB.

You can request a flipping primary surface by setting the capabilities:

desc.flags |= DSDESC_CAPS;
desc.caps   = DSCAPS_FLIPPING;

-- 
Best regards,
  Denis Oliver Kropp

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