Mesa (7.11): r600g: reduce flushes for queries

[Alex Deucher]

Module: Mesa
Branch: 7.11
Commit: 433afb7352fc1adf72592c594fe7d07424b4e2b5
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=433afb7352fc1adf72592c594fe7d07424b4e2b5

Author: Vadim Girlin <vadimgirlin at gmail.com>
Date:   Mon Jul  4 18:30:40 2011 +0400

r600g: reduce flushes for queries

---

 src/gallium/drivers/r600/r600.h               |    3 ++-
 src/gallium/drivers/r600/r600_blit.c          |    2 +-
 src/gallium/drivers/r600/r600_query.c         |    5 +----
 src/gallium/winsys/r600/drm/r600_hw_context.c |   13 ++++++++-----
 4 files changed, 12 insertions(+), 11 deletions(-)

diff --git a/src/gallium/drivers/r600/r600.h b/src/gallium/drivers/r600/r600.h
index 151e831..2af4d31 100644
--- a/src/gallium/drivers/r600/r600.h
+++ b/src/gallium/drivers/r600/r600.h
@@ -228,6 +228,7 @@ struct r600_query {
 #define R600_QUERY_STATE_STARTED	(1 << 0)
 #define R600_QUERY_STATE_ENDED		(1 << 1)
 #define R600_QUERY_STATE_SUSPENDED	(1 << 2)
+#define R600_QUERY_STATE_FLUSHED	(1 << 3)
 
 #define R600_CONTEXT_DRAW_PENDING	(1 << 0)
 #define R600_CONTEXT_DST_CACHES_DIRTY	(1 << 1)
@@ -294,7 +295,7 @@ boolean r600_context_query_result(struct r600_context *ctx,
 void r600_query_begin(struct r600_context *ctx, struct r600_query *query);
 void r600_query_end(struct r600_context *ctx, struct r600_query *query);
 void r600_context_queries_suspend(struct r600_context *ctx);
-void r600_context_queries_resume(struct r600_context *ctx);
+void r600_context_queries_resume(struct r600_context *ctx, boolean flushed);
 void r600_query_predication(struct r600_context *ctx, struct r600_query *query, int operation,
 			    int flag_wait);
 void r600_context_emit_fence(struct r600_context *ctx, struct r600_bo *fence,
diff --git a/src/gallium/drivers/r600/r600_blit.c b/src/gallium/drivers/r600/r600_blit.c
index 6171d28..35e68b6 100644
--- a/src/gallium/drivers/r600/r600_blit.c
+++ b/src/gallium/drivers/r600/r600_blit.c
@@ -97,7 +97,7 @@ static void r600_blitter_end(struct pipe_context *ctx)
 					       rctx->saved_render_cond_mode);
 		rctx->saved_render_cond = NULL;
 	}
-	r600_context_queries_resume(&rctx->ctx);
+	r600_context_queries_resume(&rctx->ctx, FALSE);
 	rctx->blit = false;
 }
 
diff --git a/src/gallium/drivers/r600/r600_query.c b/src/gallium/drivers/r600/r600_query.c
index bedb48b..174505c 100644
--- a/src/gallium/drivers/r600/r600_query.c
+++ b/src/gallium/drivers/r600/r600_query.c
@@ -61,10 +61,7 @@ static boolean r600_get_query_result(struct pipe_context *ctx,
 	struct r600_pipe_context *rctx = (struct r600_pipe_context *)ctx;
 	struct r600_query *rquery = (struct r600_query *)query;
 
-	if (rquery->num_results) {
-                ctx->flush(ctx, NULL);
-	}
-	return r600_context_query_result(&rctx->ctx, (struct r600_query *)query, wait, vresult);
+	return r600_context_query_result(&rctx->ctx, rquery, wait, vresult);
 }
 
 static void r600_render_condition(struct pipe_context *ctx,
diff --git a/src/gallium/winsys/r600/drm/r600_hw_context.c b/src/gallium/winsys/r600/drm/r600_hw_context.c
index c98a1b1..e3fb6b1 100644
--- a/src/gallium/winsys/r600/drm/r600_hw_context.c
+++ b/src/gallium/winsys/r600/drm/r600_hw_context.c
@@ -1565,7 +1565,7 @@ void r600_context_flush(struct r600_context *ctx)
 	r600_init_cs(ctx);
 
 	/* resume queries */
-	r600_context_queries_resume(ctx);
+	r600_context_queries_resume(ctx, TRUE);
 
 	/* set all valid group as dirty so they get reemited on
 	 * next draw command
@@ -1741,7 +1741,8 @@ void r600_query_begin(struct r600_context *ctx, struct r600_query *query)
 
 	/* if query buffer is full force a flush */
 	if (query->num_results*4 >= query->buffer_size - 16) {
-		r600_context_flush(ctx);
+		if (!(query->state & R600_QUERY_STATE_FLUSHED))
+			r600_context_flush(ctx);
 		r600_query_result(ctx, query, TRUE);
 	}
 
@@ -1809,6 +1810,7 @@ void r600_query_end(struct r600_context *ctx, struct r600_query *query)
 	query->num_results += 4 * (query->type == PIPE_QUERY_OCCLUSION_COUNTER ? ctx->max_db : 1);
 	query->state ^= R600_QUERY_STATE_STARTED;
 	query->state |= R600_QUERY_STATE_ENDED;
+	query->state &= ~R600_QUERY_STATE_FLUSHED;
 	ctx->num_query_running--;
 }
 
@@ -1877,7 +1879,7 @@ boolean r600_context_query_result(struct r600_context *ctx,
 {
 	uint64_t *result = (uint64_t*)vresult;
 
-	if (query->num_results) {
+	if (query->num_results && !(query->state & R600_QUERY_STATE_FLUSHED)) {
 		r600_context_flush(ctx);
 	}
 	if (!r600_query_result(ctx, query, wait))
@@ -1902,7 +1904,7 @@ void r600_context_queries_suspend(struct r600_context *ctx)
 	}
 }
 
-void r600_context_queries_resume(struct r600_context *ctx)
+void r600_context_queries_resume(struct r600_context *ctx, boolean flushed)
 {
 	struct r600_query *query;
 
@@ -1910,6 +1912,7 @@ void r600_context_queries_resume(struct r600_context *ctx)
 		if (query->state & R600_QUERY_STATE_SUSPENDED) {
 			r600_query_begin(ctx, query);
 			query->state ^= R600_QUERY_STATE_SUSPENDED;
-		}
+		} else if (flushed && query->state==R600_QUERY_STATE_ENDED)
+			query->state |= R600_QUERY_STATE_FLUSHED;
 	}
 }