Quite a bit of refactoring in the main driver will be necessary to make use of this effectively, so the implementation is incomplete.
Signed-off-by: Alyssa Rosenzweig <[email protected]> --- src/gallium/drivers/panfrost/pan_tiler.c | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/src/gallium/drivers/panfrost/pan_tiler.c b/src/gallium/drivers/panfrost/pan_tiler.c index 37768e9579e..9299eedb4c1 100644 --- a/src/gallium/drivers/panfrost/pan_tiler.c +++ b/src/gallium/drivers/panfrost/pan_tiler.c @@ -268,3 +268,24 @@ panfrost_tiler_body_size(unsigned width, unsigned height, uint8_t mask) return ALIGN_POT(header_size * 512 / 8, 512); } + +/* In the future, a heuristic to choose a tiler hierarchy mask would go here. + * At the moment, we just default to 0xFF, which enables all possible hierarchy + * levels. Overall this yields good performance but presumably incurs a cost in + * memory bandwidth / power consumption / etc, at least on smaller scenes that + * don't really need all the smaller levels enabled */ + +unsigned +panfrost_choose_hierarchy_mask( + unsigned width, unsigned height, + unsigned vertex_count) +{ + /* If there is no geometry, we don't bother enabling anything */ + + if (!vertex_count) + return 0x00; + + /* Otherwise, default everything on. TODO: Proper tests */ + + return 0xFF; +} -- 2.20.1 _______________________________________________ mesa-dev mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/mesa-dev
