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-rw-r--r--src/gallium/auxiliary/util/u_threaded_context.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/src/gallium/auxiliary/util/u_threaded_context.c b/src/gallium/auxiliary/util/u_threaded_context.c
index 8e3bceae18d..b596c322918 100644
--- a/src/gallium/auxiliary/util/u_threaded_context.c
+++ b/src/gallium/auxiliary/util/u_threaded_context.c
@@ -1524,7 +1524,8 @@ tc_buffer_do_flush_region(struct threaded_context *tc,
if (ttrans->staging) {
struct pipe_box src_box;
- u_box_1d(ttrans->offset + box->x % tc->map_buffer_alignment,
+ u_box_1d(ttrans->offset + ttrans->b.box.x % tc->map_buffer_alignment +
+ (box->x - ttrans->b.box.x),
box->width, &src_box);
/* Copy the staging buffer into the original one. */