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virgl: honor winsys supplied metadata 

To truly to do this correctly, we'll have to fix the discrepancy between
drm_virtgpu_3d_transfer_to_host and virtio_gpu_transfer_host_3d. However,
this is a good starting point.

Since virtio-gpu only supports self-import and export, this should be fine.
Let's only do WINSYS_HANDLE_TYPE_FD for this currently.

Reviewed by: Robert Tarasov <tutankhamen@chromium.org>
This commit is contained in:
Gurchetan Singh 2019-09-25 10:44:44 -07:00
parent 9bde8f3a8f
commit a1a5672118
1 changed files with 6 additions and 1 deletions
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7
src/gallium/winsys/virgl/drm/virgl_drm_winsys.c
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@ -313,10 +313,15 @@ virgl_drm_winsys_resource_create_handle(struct virgl_winsys *qws,
struct virgl_hw_res *res = NULL;
uint32_t handle = whandle->handle;
if (whandle->offset != 0) {
if (whandle->offset != 0 && whandle->type == WINSYS_HANDLE_TYPE_SHARED) {
_debug_printf("attempt to import unsupported winsys offset %u\n",
whandle->offset);
return NULL;
} else if (whandle->type == WINSYS_HANDLE_TYPE_FD) {
*plane = whandle->plane;
*stride = whandle->stride;
*plane_offset = whandle->offset;
*modifier = whandle->modifier;
}
mtx_lock(&qdws->bo_handles_mutex);