r600g: fix invalid ref count handling in r600_set_constant_buffer

Only decrement ref count if r600_upload_const_buffer
really changes the buffer.

diff --git a/src/gallium/drivers/r600/r600_state_common.c b/src/gallium/drivers/r600/r600_state_common.c
index e086e27..d82985e 100644 (file)
--- a/src/gallium/drivers/r600/r600_state_common.c
+++ b/src/gallium/drivers/r600/r600_state_common.c
@@ -433,7 +433,7 @@ void r600_set_constant_buffer(struct pipe_context *ctx, uint shader, uint index,
                return;
        }
 
-       if (!rbuffer->user_buffer)
+       if (buffer != &rbuffer->r.base.b)
                pipe_resource_reference((struct pipe_resource**)&rbuffer, NULL);
 }