Module: Mesa
Branch: master
Commit: 79790e276f61f23217badd80c51add755dfe18ac
URL:    
http://cgit.freedesktop.org/mesa/mesa/commit/?id=79790e276f61f23217badd80c51add755dfe18ac

Author: Mike Blumenkrantz <[email protected]>
Date:   Thu Apr 15 15:13:02 2021 -0400

zink: when performing an implicit reset, sync qbos

resetting a query pool+qbo dumpsters the existing qbo results,
so these need to be copied to the new qbo if they exist, and then the query
id needs to be updated to match the expected result offset so everything
keeps working as expected

Fixes: 00fc85a0119 ("zink: reset queries when suspending if >50% of total pool 
is used")

Reviewed-by: Dave Airlie <[email protected]>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/10268>

---

 src/gallium/drivers/zink/zink_query.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/src/gallium/drivers/zink/zink_query.c 
b/src/gallium/drivers/zink/zink_query.c
index 98dd0e120cb..e14a58edbbd 100644
--- a/src/gallium/drivers/zink/zink_query.c
+++ b/src/gallium/drivers/zink/zink_query.c
@@ -177,6 +177,23 @@ is_bool_query(struct zink_query *query)
           query->type == PIPE_QUERY_GPU_FINISHED;
 }
 
+static void
+qbo_sync_from_prev(struct zink_context *ctx, struct zink_query *query, 
unsigned id_offset, unsigned last_start)
+{
+   assert(id_offset);
+
+   struct zink_query_buffer *prev = list_last_entry(&query->buffers, struct 
zink_query_buffer, list);
+   unsigned result_size = get_num_results(query->type) * sizeof(uint64_t);
+   bool is_timestamp = query->type == PIPE_QUERY_TIMESTAMP || query->type == 
PIPE_QUERY_TIMESTAMP_DISJOINT;
+   /* this is get_buffer_offset() but without the zink_query object */
+   unsigned qbo_offset = is_timestamp ? 0 : 
zink_resource(prev->buffer)->obj->offset + last_start * 
get_num_results(query->type) * sizeof(uint64_t);
+   query->curr_query = id_offset;
+   query->curr_qbo->num_results = id_offset;
+   zink_copy_buffer(ctx, NULL, zink_resource(query->curr_qbo->buffer), 
zink_resource(prev->buffer), 0,
+                    qbo_offset,
+                    id_offset * result_size);
+}
+
 static bool
 qbo_append(struct pipe_screen *screen, struct zink_query *query)
 {
@@ -542,6 +559,8 @@ copy_results_to_buffer(struct zink_context *ctx, struct 
zink_query *query, struc
 static void
 reset_pool(struct zink_context *ctx, struct zink_batch *batch, struct 
zink_query *q)
 {
+   unsigned last_start = q->last_start;
+   unsigned id_offset = q->curr_query - q->last_start;
    /* This command must only be called outside of a render pass instance
     *
     * - vkCmdResetQueryPool spec
@@ -568,6 +587,8 @@ reset_pool(struct zink_context *ctx, struct zink_batch 
*batch, struct zink_query
       else
          debug_printf("zink: qbo alloc failed on reset!");
    }
+   if (id_offset)
+      qbo_sync_from_prev(ctx, q, id_offset, last_start);
 }
 
 static inline unsigned

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