Mesa (staging/19.1): gallium/winsys/kms: Fix dumb buffer bpp

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Module: Mesa
Branch: staging/19.1
Commit: be69033241874593d583ca1ed1eb06d1a2dc47d4
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=be69033241874593d583ca1ed1eb06d1a2dc47d4

Author: Kevin Strasser <kevin.strasser at intel.com>
Date:   Thu May 30 12:37:07 2019 -0700

gallium/winsys/kms: Fix dumb buffer bpp

The bpp in the dumb buffer creation request is hardcoded to 32, which is an
incorrect assumption as the caller is free to pick any pipe format. Use the
bpp supplied to us through util_format_get_blocksizebits().

Fixes: 3b176c441b "gallium: Add a dumb drm/kms winsys backed swrast provider"
Signed-off-by: Kevin Strasser <kevin.strasser at intel.com>
Reviewed-by: Adam Jackson <ajax at redhat.com>
Reviewed-by: Marek Olšák <marek.olsak at amd.com>
Reviewed-by: Emil Velikov <emil.velikov at collabora.com>
Reviewed-by: Eric Engestrom <eric.engestrom at intel.com>
(cherry picked from commit ec0a68e50dd3ebfbeee77670d7d09184d0907ead)

---

 src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.c b/src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.c
index 6401f55bbd3..d9b417dc4da 100644
--- a/src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.c
+++ b/src/gallium/winsys/sw/kms-dri/kms_dri_sw_winsys.c
@@ -183,7 +183,7 @@ kms_sw_displaytarget_create(struct sw_winsys *ws,
    kms_sw_dt->format = format;
 
    memset(&create_req, 0, sizeof(create_req));
-   create_req.bpp = 32;
+   create_req.bpp = util_format_get_blocksizebits(format);
    create_req.width = width;
    create_req.height = height;
    ret = drmIoctl(kms_sw->fd, DRM_IOCTL_MODE_CREATE_DUMB, &create_req);