fdo-mirrors/mesa
1
0
Fork 0
mirror of https://gitlab.freedesktop.org/mesa/mesa.git synced 2026-05-05 18:18:06 +02:00
Code Issues Projects Releases Packages Wiki Activity Actions 1

virgl: disable virgl when no 3D for virtio gpu.

Browse source 
If users are running mesa under old version of qemu or have turned off
GL at runtime, virtio gpu driver actually doesn't work. Adds a detection
here so mesa can fall back to software rendering.

v2:
 - move detection from loader to virgl (Ilia, Emil)

Signed-off-by: Lepton Wu <lepton@chromium.org>
Reviewed-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Lepton Wu 2018-04-05 12:38:48 -07:00 • committed by Dave Airlie
parent a8420e2530
commit 6c5abb68c7
1 changed files with 11 additions and 0 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

11
src/gallium/winsys/virgl/drm/virgl_drm_winsys.c
View file

@ -800,8 +800,15 @@ virgl_drm_winsys_create(int drmFD)
{
struct virgl_drm_winsys *qdws;
int ret;
int gl = 0;
struct drm_virtgpu_getparam getparam = {0};
getparam.param = VIRTGPU_PARAM_3D_FEATURES;
getparam.value = (uint64_t)(uintptr_t)&gl;
ret = drmIoctl(drmFD, DRM_IOCTL_VIRTGPU_GETPARAM, &getparam);
if (ret < 0 || !gl)
return NULL;
qdws = CALLOC_STRUCT(virgl_drm_winsys);
if (!qdws)
return NULL;
@ -914,6 +921,10 @@ virgl_drm_screen_create(int fd)
int dup_fd = fcntl(fd, F_DUPFD_CLOEXEC, 3);
vws = virgl_drm_winsys_create(dup_fd);
if (!vws) {
close(dup_fd);
goto unlock;
}
pscreen = virgl_create_screen(vws);
if (pscreen) {