From 2ddae102eb386019baf7ba93eb5c3257da68714a Mon Sep 17 00:00:00 2001
From: Markus Siglreithmaier <m.siglreith@gmail.com>
Date: Tue, 10 Aug 2021 08:32:51 +0200
Subject: [PATCH] book: add section for workgroup memory (#713)

---
 docs/src/attributes.md              | 11 +++++++++++
 tests/ui/glam/mat3_vec3_multiply.rs |  2 +-
 2 files changed, 12 insertions(+), 1 deletion(-)

diff --git a/docs/src/attributes.md b/docs/src/attributes.md
index 187f9661a2..30cd21ed6e 100644
--- a/docs/src/attributes.md
+++ b/docs/src/attributes.md
@@ -89,3 +89,14 @@ Example:
 #[spirv(vertex)]
 fn main(#[spirv(invariant)] var: &mut f32) { }
 ```
+
+## Workgroup shared memory
+
+The `workgroup` attribute defines shared memory, which can be accessed by all invocations within the same workgroup. This corresponds to `groupshared` memory in hlsl or `shared` memory in glsl.
+
+Example:
+
+```rust
+#[spirv(compute(threads(32)))]
+fn main(#[spirv(workgroup)] var: &mut [Vec4; 4]) { }
+```
diff --git a/tests/ui/glam/mat3_vec3_multiply.rs b/tests/ui/glam/mat3_vec3_multiply.rs
index 2efb5109c3..848143e47b 100644
--- a/tests/ui/glam/mat3_vec3_multiply.rs
+++ b/tests/ui/glam/mat3_vec3_multiply.rs
@@ -1,4 +1,4 @@
-// Tests muiltplying a `Mat3` by a `Vec3`.
+// Tests multiplying a `Mat3` by a `Vec3`.
 // build-pass
 
 use spirv_std as _;