# Pastebin AmapB933
static int
get_capset(int fd, struct virgl_renderer_capset_drm *caps)
{
   struct drm_virtgpu_get_caps args = {
         .cap_set_id = VIRGL_RENDERER_CAPSET_DRM,
         .cap_set_ver = 0,
         .addr = (uintptr_t)caps,
         .size = sizeof(*caps),
   };

   memset(caps, 0, sizeof(*caps));

   return virtgpu_ioctl(fd, VIRTGPU_GET_CAPS, &args);
}