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-rw-r--r--src/mesa/drivers/dri/intel/intel_batchbuffer.c11
1 files changed, 11 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/intel/intel_batchbuffer.c b/src/mesa/drivers/dri/intel/intel_batchbuffer.c
index cff15d253d..d6cd4ca6c7 100644
--- a/src/mesa/drivers/dri/intel/intel_batchbuffer.c
+++ b/src/mesa/drivers/dri/intel/intel_batchbuffer.c
@@ -216,6 +216,17 @@ _intel_batchbuffer_flush(struct intel_batchbuffer *batch, const char *file,
used += 8;
}
+ /* Workaround for recursive batchbuffer flushing: If the window is
+ * moved, we can get into a case where we try to flush during a
+ * flush. What happens is that when we try to grab the lock for
+ * the first flush, we detect that the window moved which then
+ * causes another flush (from the intel_draw_buffer() call in
+ * intelUpdatePageFlipping()). To work around this we reset the
+ * batchbuffer tail pointer before trying to get the lock. This
+ * prevent the nested buffer flush, but a better fix would be to
+ * avoid that in the first place. */
+ batch->ptr = batch->map;
+
/* TODO: Just pass the relocation list and dma buffer up to the
* kernel.
*/