3d3ca9b65e
When VMMs do not support VIRTGPU_DRM_CAPSET_VENUS the capset data remains zeroed. By requiring the stable wire_format_version 1 this can be detected early without initialising the renderer. Avoids triggering `assert(capset->supports_blob_id_0);` in debug builds under such circumstances. Cc: mesa-stable Signed-off-by: Janne Grunau <j@jannau.net> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34613>