Mesa (master): virgl: Cache depth and stencil buffers

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Module: Mesa
Branch: master
Commit: d245d7b6b8bb75622dd43fb845f60d55ad3ebc89
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=d245d7b6b8bb75622dd43fb845f60d55ad3ebc89

Author: Rohan Garg <rohan.garg at collabora.com>
Date:   Mon Jan 18 14:21:28 2021 +0100

virgl: Cache depth and stencil buffers

Expand the list of bind flags to cache depth and stencil
buffers.

Extensive testing shows the following performance improvements:

Game           |    % difference in FPS
Plague Inc     |             7
Portal 2       |             21
Overcooked 2   |             1.2
Hollow Knight  |            -1.1
Civilization V |             3.8

Signed-off-by: Rohan Garg <rohan.garg at collabora.com>
Reviewed-by: Gert Wollny <gert.wollny at collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/8560>

---

 src/gallium/winsys/virgl/drm/virgl_drm_winsys.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/gallium/winsys/virgl/drm/virgl_drm_winsys.c b/src/gallium/winsys/virgl/drm/virgl_drm_winsys.c
index 43f21566ec3..2be575fb21d 100644
--- a/src/gallium/winsys/virgl/drm/virgl_drm_winsys.c
+++ b/src/gallium/winsys/virgl/drm/virgl_drm_winsys.c
@@ -62,7 +62,8 @@ static inline boolean can_cache_resource(uint32_t bind)
           bind == VIRGL_BIND_INDEX_BUFFER ||
           bind == VIRGL_BIND_VERTEX_BUFFER ||
           bind == VIRGL_BIND_CUSTOM ||
-          bind == VIRGL_BIND_STAGING;
+          bind == VIRGL_BIND_STAGING ||
+          bind == VIRGL_BIND_DEPTH_STENCIL;
 }
 
 static void virgl_hw_res_destroy(struct virgl_drm_winsys *qdws,