mesa/glthread: switch to u_queue and redesign the batch management

This mirrors exactly how u_threaded_context works.
If you understand this, you also understand u_threaded_context.

Reviewed-by: Timothy Arceri <[email protected]>

1 files changed, 6 insertions, 4 deletions

diff --git a/src/mesa/main/marshal.h b/src/mesa/main/marshal.h
index a6cff8bcbfd..999c75e3ea6 100644
--- a/src/mesa/main/marshal.h
+++ b/src/mesa/main/marshal.h
@@ -53,15 +53,17 @@ _mesa_glthread_allocate_command(struct gl_context *ctx,
                                 size_t size)
 {
    struct glthread_state *glthread = ctx->GLThread;
+   struct glthread_batch *next = &glthread->batches[glthread->next];
    struct marshal_cmd_base *cmd_base;
    const size_t aligned_size = ALIGN(size, 8);
 
-   if (unlikely(glthread->batch->used + size > MARSHAL_MAX_CMD_SIZE))
+   if (unlikely(next->used + size > MARSHAL_MAX_CMD_SIZE)) {
       _mesa_glthread_flush_batch(ctx);
+      next = &glthread->batches[glthread->next];
+   }
 
-   cmd_base = (struct marshal_cmd_base *)
-      &glthread->batch->buffer[glthread->batch->used];
-   glthread->batch->used += aligned_size;
+   cmd_base = (struct marshal_cmd_base *)&next->buffer[next->used];
+   next->used += aligned_size;
    cmd_base->cmd_id = cmd_id;
    cmd_base->cmd_size = aligned_size;
    return cmd_base;