Mesa (master): draw: fix tessellation stats query

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Module: Mesa
Branch: master
Commit: 80fa8304c807b2ef28bf9e37bdd7afadfde216ce
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=80fa8304c807b2ef28bf9e37bdd7afadfde216ce

Author: Dave Airlie <airlied at redhat.com>
Date:   Fri Apr 10 14:35:24 2020 +1000

draw: fix tessellation stats query

Reviewed-by: Roland Scheidegger <sroland at vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4560>

---

 src/gallium/auxiliary/draw/draw_pt_fetch_shade_pipeline_llvm.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/src/gallium/auxiliary/draw/draw_pt_fetch_shade_pipeline_llvm.c b/src/gallium/auxiliary/draw/draw_pt_fetch_shade_pipeline_llvm.c
index f9db2928582..d403e81c224 100644
--- a/src/gallium/auxiliary/draw/draw_pt_fetch_shade_pipeline_llvm.c
+++ b/src/gallium/auxiliary/draw/draw_pt_fetch_shade_pipeline_llvm.c
@@ -596,8 +596,11 @@ llvm_pipeline_generic(struct draw_pt_middle_end *middle,
 
    if (draw->collect_statistics) {
       draw->statistics.ia_vertices += prim_info->count;
-      draw->statistics.ia_primitives +=
-         u_decomposed_prims_for_vertices(prim_info->prim, prim_info->count);
+      if (prim_info->prim == PIPE_PRIM_PATCHES)
+         draw->statistics.ia_primitives += prim_info->count / draw->pt.vertices_per_patch;
+      else
+         draw->statistics.ia_primitives +=
+            u_decomposed_prims_for_vertices(prim_info->prim, prim_info->count);
       draw->statistics.vs_invocations += fetch_info->count;
    }