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Re: can surface_bits_per_pixel() for the console surface ever return any
Re: can surface_bits_per_pixel() for the console surface ever return anything other than 32 ?
Mon, 15 Feb 2021 10:01:36 +0100
On Fri, Feb 12, 2021 at 06:38:16PM +0000, Peter Maydell wrote:
> On Thu, 11 Feb 2021 at 10:12, Gerd Hoffmann <firstname.lastname@example.org> wrote:
> > Hi,
> > > I notice that as well as handling surface_bits_per_pixel()
> > > possibly returning 8, 15, 16, 24, these devices also seem to
> > > check for the possibility it returns 0 (presumably meaning
> > > "no surface" or "no surface yet" ?).
> > Depends a bit on how the surface is created.
> > When using host memory as backing storage (typical workflow is
> > qemu_console_resize() + qemu_console_surface() calls) bits per pixel is
> > 32 no matter what (format is PIXMAN_x8r8g8b8 to be exact). I think this
> > is true for most if not all arm display devices.
> Quick follow-up check: this is always RGB, ie is_surface_bgr()
> will always return false, right ?
Yes, always rgb (in host native byte order).