llvmpipe: Add get_{driver,device}_uuid implementations

Commit 9da15aa3aa94 ("llvmpipe: enable EXT_memory_object(_fd)") enabled
the extension, but left this unimplemented.

Leaving this unimplemented causes segfaults for anyone trying to retrieve
the UUIDs, as the calling code in the state tracker does not check if the
function is implemented. This affects e.g. current Wine versions.

Set the UUID to all zeros. Although this slightly violates the vulkan
specification (since 1.2.146), the UUIDs have to match the ones from
lavapipe (lvp_get_physical_device_properties_1_1).

Closes: https://gitlab.freedesktop.org/mesa/mesa/-/issues/5865
Fixes: 9da15aa3aa94 ("llvmpipe: enable EXT_memory_object(_fd)")
Signed-off-by: Stefan Brüns <stefan.bruens@rwth-aachen.de>
Reviewed-by: Dave Airlie airlied@redhat.com
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/14558>

diff --git a/src/gallium/drivers/llvmpipe/lp_screen.c b/src/gallium/drivers/llvmpipe/lp_screen.c
index 175b14d..b5977c8 100644 (file)
--- a/src/gallium/drivers/llvmpipe/lp_screen.c
+++ b/src/gallium/drivers/llvmpipe/lp_screen.c
@@ -568,6 +568,18 @@ llvmpipe_get_compute_param(struct pipe_screen *_screen,
    return 0;
 }
 
+static void
+llvmpipe_get_driver_uuid(struct pipe_screen *pscreen, char *uuid)
+{
+   memset(uuid, 0, PIPE_UUID_SIZE);
+}
+
+static void
+llvmpipe_get_device_uuid(struct pipe_screen *pscreen, char *uuid)
+{
+   memset(uuid, 0, PIPE_UUID_SIZE);
+}
+
 static const struct nir_shader_compiler_options gallivm_nir_options = {
    .lower_scmp = true,
    .lower_flrp32 = true,
@@ -1049,6 +1061,9 @@ llvmpipe_create_screen(struct sw_winsys *winsys)
 
    screen->base.get_timestamp = llvmpipe_get_timestamp;
 
+   screen->base.get_driver_uuid = llvmpipe_get_driver_uuid;
+   screen->base.get_device_uuid = llvmpipe_get_device_uuid;
+
    screen->base.finalize_nir = llvmpipe_finalize_nir;
 
    screen->base.get_disk_shader_cache = lp_get_disk_shader_cache;