From: Nicolai Hähnle <nicolai.haeh...@amd.com>
This accomodates a streaming pattern where the discard flag is set when the
application wraps back to the beginning of the buffer.
---
src/gallium/drivers/radeon/r600_buffer_common.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/src/gallium/drivers/radeon/r600_buffer_common.c
b/src/gallium/drivers/radeon/r600_buffer_common.c
index 484f5c8..aeb9a20 100644
--- a/src/gallium/drivers/radeon/r600_buffer_common.c
+++ b/src/gallium/drivers/radeon/r600_buffer_common.c
@@ -280,7 +280,10 @@ static void *r600_buffer_transfer_map(struct pipe_context
*ctx,
if (r600_rings_is_buffer_referenced(rctx, rbuffer->buf,
RADEON_USAGE_READWRITE) ||
!rctx->ws->buffer_wait(rbuffer->buf, 0,
RADEON_USAGE_READWRITE)) {
rctx->invalidate_buffer(&rctx->b, &rbuffer->b.b);
+ } else {
+ util_range_set_empty(&rbuffer->valid_buffer_range);
}
+
/* At this point, the buffer is always idle. */
usage |= PIPE_TRANSFER_UNSYNCHRONIZED;
}
--
2.5.0
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