kopper: apply ancillary invalidation through glthread on swapbuffers

this fixes invalidations with tc's renderpass parsing so they get picked
up before the renderpass ends

Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/21910>

src/gallium/frontends/dri/kopper.c

@@ -853,6 +853,10 @@ kopperSwapBuffers(__DRIdrawable *dPriv, uint32_t flush_flags)
    if (!ptex)
       return 0;
 
+   /* ensure invalidation is applied before renderpass ends */
+   if (flush_flags & __DRI2_FLUSH_INVALIDATE_ANCILLARY)
+      _mesa_glthread_invalidate_zsbuf(ctx->st->ctx);
+
    /* Wait for glthread to finish because we can't use pipe_context from
     * multiple threads.
     */