[intel] Convert relocations to not be cleared out on buffer submit.

We have two consumers of relocations.  One is static state buffers, which
want the same relocation every time.  The other is the batchbuffer, which gets
thrown out immediately after submit.  This lets us reduce repeated computation
for static state buffers, and clean up the code by moving relocations nearer
to where the state buffer is computed.

1 files changed, 4 insertions, 1 deletions

diff --git a/src/mesa/drivers/dri/common/dri_bufmgr.h b/src/mesa/drivers/dri/common/dri_bufmgr.h
index cdf27b903f..36340d4d57 100644
--- a/src/mesa/drivers/dri/common/dri_bufmgr.h
+++ b/src/mesa/drivers/dri/common/dri_bufmgr.h
@@ -136,7 +136,10 @@ struct _dri_bufmgr {
    void (*destroy)(dri_bufmgr *bufmgr);
 
    /**
-    * Add relocation entry in reloc_buf, to be set on command submission.
+    * Add relocation entry in reloc_buf, which will be updated with the
+    * target buffer's real offset on on command submission.
+    *
+    * Relocations remain in place for the lifetime of the buffer object.
     *
     * \param reloc_buf Buffer to write the relocation into.
     * \param flags BO flags to be used in validating the target buffer.