From b5d9974b9a3798ccae4fb9d6d4f4357381a8072a Mon Sep 17 00:00:00 2001
From: Jacob Hughes <j@distanthills.org>
Date: Sat, 30 Sep 2023 17:53:44 -0400
Subject: [PATCH] subgroup: require GroupNonUnifomBallot capability

---
 src/back/spv/block.rs | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/src/back/spv/block.rs b/src/back/spv/block.rs
index 90de9ce127..54267dc6b2 100644
--- a/src/back/spv/block.rs
+++ b/src/back/spv/block.rs
@@ -2329,6 +2329,10 @@ impl<'w> BlockContext<'w> {
                     self.write_ray_query_function(query, fun, &mut block);
                 }
                 crate::Statement::SubgroupBallot { result } => {
+                    self.writer.require_any(
+                        "GroupNonUniformBallot",
+                        &[spirv::Capability::GroupNonUniformBallot],
+                    )?;
                     let vec4_u32_type_id = self.get_type_id(LookupType::Local(LocalType::Value {
                         vector_size: Some(crate::VectorSize::Quad),
                         kind: crate::ScalarKind::Uint,