> From: Stefan Dirsch <[email protected]>
> Date: Tue, 26 Apr 2016 11:45:38 +0200
>
> From: Frederic Crozat <[email protected]>
>
> Due to graphics corruption default to 16bpp in virt instead of 24 (Fedora).
> Do the same on XenSource gfx, which suffers from the same issue.
I think using magic numbers like that is unhelpful, especially without
comments.
> ---
> src/alp_driver.c | 11 ++++++++++-
> 1 file changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/src/alp_driver.c b/src/alp_driver.c
> index da31321..6abb476 100644
> --- a/src/alp_driver.c
> +++ b/src/alp_driver.c
> @@ -466,6 +466,7 @@ AlpPreInit(ScrnInfoPtr pScrn, int flags)
> vgaHWPtr hwp;
> MessageType from, from1;
> int i;
> + int defaultdepth;
> int depth_flags;
> ClockRangePtr clockRanges;
> char *s;
> @@ -551,11 +552,19 @@ AlpPreInit(ScrnInfoPtr pScrn, int flags)
> depth_flags |= Support32bppFb |
> SupportConvert32to24 |
> PreferConvert32to24;
> +
> + /* use 16bpp in virt */
> + if (((pCir->PciInfo->subvendor_id & 0xffff) == 0x1af4) ||
> + ((pCir->PciInfo->subvendor_id & 0xffff) == 0x5853))
> + defaultdepth = 16;
> + else
> + defaultdepth = 24;
> +
> /*
> * The first thing we should figure out is the depth, bpp, etc.
> * We support both 24bpp and 32bpp layouts, so indicate that.
> */
> - if (!xf86SetDepthBpp(pScrn, 0, 0, 24, depth_flags)) {
> + if (!xf86SetDepthBpp(pScrn, 0, 0, defaultdepth, depth_flags)) {
> return FALSE;
> } else {
> /* Check that the returned depth is one we support */
> --
> 2.6.2
>
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>
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