r600g: add NV_conditional_render support.

This is reliant on a drm patch that I posted on the list + a version bump.

These will appear in drm-next today.

Signed-off-by: Dave Airlie <airlied@redhat.com>

4 files changed, 37 insertions, 1 deletions

diff --git a/src/gallium/drivers/r600/evergreend.h b/src/gallium/drivers/r600/evergreend.h
index f0a1ee0cd0..c51a163bd0 100644
--- a/src/gallium/drivers/r600/evergreend.h
+++ b/src/gallium/drivers/r600/evergreend.h
@@ -108,8 +108,9 @@
 #define PKT3_IT_OPCODE_S(x)             (((x) & 0xFF) << 8)
 #define PKT3_IT_OPCODE_G(x)             (((x) >> 8) & 0xFF)
 #define PKT3_IT_OPCODE_C                0xFFFF00FF
+#define PKT3_PREDICATE(x)               (((x) >> 0) & 0x1)
 #define PKT0(index, count) (PKT_TYPE_S(0) | PKT0_BASE_INDEX_S(index) | PKT_COUNT_S(count))
-#define PKT3(op, count) (PKT_TYPE_S(3) | PKT3_IT_OPCODE_S(op) | PKT_COUNT_S(count))
+#define PKT3(op, count, predicate) (PKT_TYPE_S(3) | PKT3_IT_OPCODE_S(op) | PKT_COUNT_S(count) | PKT3_PREDICATE(predicate))
 
 /* Registers */
 #define R_008C00_SQ_CONFIG                           0x00008C00
diff --git a/src/gallium/drivers/r600/r600.h b/src/gallium/drivers/r600/r600.h
index 3568708785..0b7d6f7096 100644
--- a/src/gallium/drivers/r600/r600.h
+++ b/src/gallium/drivers/r600/r600.h
@@ -253,6 +253,7 @@ struct r600_context {
 	unsigned		num_query_running;
 	struct list_head	fenced_bo;
 	unsigned                max_db; /* for OQ */
+	boolean                 predicate_drawing;
 };
 
 struct r600_draw {
@@ -285,6 +286,8 @@ 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_query_predication(struct r600_context *ctx, struct r600_query *query, int operation,
+			    int flag_wait);
 
 int evergreen_context_init(struct r600_context *ctx, struct radeon *radeon);
 void evergreen_context_draw(struct r600_context *ctx, const struct r600_draw *draw);
diff --git a/src/gallium/drivers/r600/r600_query.c b/src/gallium/drivers/r600/r600_query.c
index 726668260c..343403f92f 100644
--- a/src/gallium/drivers/r600/r600_query.c
+++ b/src/gallium/drivers/r600/r600_query.c
@@ -21,6 +21,7 @@
  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  */
 #include "r600_pipe.h"
+#include "r600d.h"
 
 static struct pipe_query *r600_create_query(struct pipe_context *ctx, unsigned query_type)
 {
@@ -66,6 +67,30 @@ static boolean r600_get_query_result(struct pipe_context *ctx,
 	return r600_context_query_result(&rctx->ctx, (struct r600_query *)query, wait, vresult);
 }
 
+static void r600_render_condition(struct pipe_context *ctx,
+				  struct pipe_query *query,
+				  uint mode)
+{
+	struct r600_pipe_context *rctx = (struct r600_pipe_context *)ctx;
+	struct r600_query *rquery = (struct r600_query *)query;
+	int wait_flag = 0;
+
+	if (!query) {
+		rctx->ctx.predicate_drawing = false;
+		r600_query_predication(&rctx->ctx, NULL, PREDICATION_OP_CLEAR, 1);
+		return;
+	}
+
+	if (mode == PIPE_RENDER_COND_WAIT ||
+	    mode == PIPE_RENDER_COND_BY_REGION_WAIT) {
+		wait_flag = 1;
+	}
+
+	rctx->ctx.predicate_drawing = true;
+	r600_query_predication(&rctx->ctx, rquery, PREDICATION_OP_ZPASS, wait_flag);
+	
+}
+
 void r600_init_query_functions(struct r600_pipe_context *rctx)
 {
 	rctx->context.create_query = r600_create_query;
@@ -73,4 +98,7 @@ void r600_init_query_functions(struct r600_pipe_context *rctx)
 	rctx->context.begin_query = r600_begin_query;
 	rctx->context.end_query = r600_end_query;
 	rctx->context.get_query_result = r600_get_query_result;
+
+	if (r600_get_num_backends(rctx->screen->radeon) > 0)
+	    rctx->context.render_condition = r600_render_condition;
 }
diff --git a/src/gallium/drivers/r600/r600d.h b/src/gallium/drivers/r600/r600d.h
index e8558c49a7..df70e2889e 100644
--- a/src/gallium/drivers/r600/r600d.h
+++ b/src/gallium/drivers/r600/r600d.h
@@ -67,6 +67,10 @@
 #define PKT3_SET_CTL_CONST                     0x6F
 #define PKT3_SURFACE_BASE_UPDATE               0x73
 
+#define PREDICATION_OP_CLEAR 0x0
+#define PREDICATION_OP_ZPASS 0x1
+#define PREDICATION_OP_PRIMCOUNT 0x2
+
 #define PKT_TYPE_S(x)                   (((x) & 0x3) << 30)
 #define PKT_TYPE_G(x)                   (((x) >> 30) & 0x3)
 #define PKT_TYPE_C                      0x3FFFFFFF