From 0bfb5ca10deacc84898bf0ff4425922702311455 Mon Sep 17 00:00:00 2001
From: jzm-intel <zhaoming.jiang@intel.com>
Date: Mon, 27 May 2024 10:06:11 +0800
Subject: [PATCH] Consider subgroup_size used in compute stage uniform (#4652)

subgroup_size built-in variable should be considered uniform for uniformity analysis when used in compute stage uniform.
---
 proposals/subgroups.md | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/proposals/subgroups.md b/proposals/subgroups.md
index f5dcfea37c..c98a04f1b3 100644
--- a/proposals/subgroups.md
+++ b/proposals/subgroups.md
@@ -74,6 +74,8 @@ Some possibilities:
 | `subgroup_size` | u32 | Input | The size of the current subgroup |
 | `subgroup_invocation_id` | u32 | Input | The index of the invocation in the current subgroup |
 
+When used in `compute` shader stage, `subgroup_size` should be considered uniform for uniformity analysis.
+
 Note: HLSL does not expose a subgroup_id or num_subgroups equivalent.
 
 **TODO**: Can subgroup_id and/or num_subgroups be emulated efficiently and portably?