Module: Mesa Branch: main Commit: 9e446c9282319de961c10d67f859fa9ac37e3ac4 URL: http://cgit.freedesktop.org/mesa/mesa/commit/?id=9e446c9282319de961c10d67f859fa9ac37e3ac4
Author: Francisco Jerez <curroje...@riseup.net> Date: Sat Feb 19 01:38:56 2022 -0800 intel/fs/xe2+: Add comment reminding us to take advantage of the 32 SBID tokens. The additional SBID tokens will be useful when large GRF mode is implemented. Reviewed-by: Lionel Landwerlin <lionel.g.landwer...@intel.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25514> --- src/intel/compiler/brw_fs_scoreboard.cpp | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/src/intel/compiler/brw_fs_scoreboard.cpp b/src/intel/compiler/brw_fs_scoreboard.cpp index 24183570da7..c287fd62a5c 100644 --- a/src/intel/compiler/brw_fs_scoreboard.cpp +++ b/src/intel/compiler/brw_fs_scoreboard.cpp @@ -1227,7 +1227,10 @@ namespace { { /* XXX - Use bin-packing algorithm to assign hardware SBIDs optimally in * shaders with a large number of SEND messages. + * + * XXX - Use 32 SBIDs on Xe2+ while in large GRF mode. */ + const unsigned num_sbids = 16; /* Allocate an unordered dependency ID to hardware SBID translation * table with as many entries as instructions there are in the shader, @@ -1246,7 +1249,7 @@ namespace { const dependency &dep = deps0[ip][i]; if (dep.unordered && ids[dep.id] == ~0u) - ids[dep.id] = (next_id++) & 0xf; + ids[dep.id] = (next_id++) & (num_sbids - 1); add_dependency(ids, deps1[ip], dep); }
