nvc0: add compute invocation counter

The strategy is to keep a CPU-side counter of the direct invocations,
and a GPU-side counter of the indirect invocations, and then add them
together for queries.

The specific technique is a macro which multiplies a list of integers
together and accumulates the product into SCRATCH registers held inside
of the context. Another macro will read those values out and add them to
the passed-in cpu-side counter to be stored in a query buffer the same
way that all the other statistics are stored.

Original implementation by Rhys Perry, redone by Ilia Mirkin to use the
SCRATCH temporaries.

Signed-off-by: Ilia Mirkin <[email protected]>

1 files changed, 2 insertions, 0 deletions

diff --git a/src/gallium/drivers/nouveau/nvc0/nve4_compute.c b/src/gallium/drivers/nouveau/nvc0/nve4_compute.c
index fcd7d9537f9..c5e4dec20bd 100644
--- a/src/gallium/drivers/nouveau/nvc0/nve4_compute.c
+++ b/src/gallium/drivers/nouveau/nvc0/nve4_compute.c
@@ -779,6 +779,8 @@ nve4_launch_grid(struct pipe_context *pipe, const struct pipe_grid_info *info)
    BEGIN_NVC0(push, SUBC_CP(NV50_GRAPH_SERIALIZE), 1);
    PUSH_DATA (push, 0);
 
+   nvc0_update_compute_invocations_counter(nvc0, info);
+
 out:
    if (ret)
       NOUVEAU_ERR("Failed to launch grid !\n");