From e24e8f643cf0eddb8912a264197bfce9ba3c9af9 Mon Sep 17 00:00:00 2001
From: Dzmitry Malyshau <dmalyshau@mozilla.com>
Date: Mon, 17 May 2021 18:21:27 -0400
Subject: [PATCH] Fix dynamic stencil reference for Replace ops

---
 wgpu-types/src/lib.rs | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/wgpu-types/src/lib.rs b/wgpu-types/src/lib.rs
index 338d23d8ed..d5ad581b3e 100644
--- a/wgpu-types/src/lib.rs
+++ b/wgpu-types/src/lib.rs
@@ -1814,7 +1814,7 @@ impl StencilState {
     }
     /// Returns true if the stencil state uses the reference value for testing.
     pub fn needs_ref_value(&self) -> bool {
-        self.front.compare.needs_ref_value() || self.back.compare.needs_ref_value()
+        self.front.needs_ref_value() || self.back.needs_ref_value()
     }
 }
 
@@ -1944,6 +1944,14 @@ impl StencilFaceState {
         depth_fail_op: StencilOperation::Keep,
         pass_op: StencilOperation::Keep,
     };
+
+    /// Returns true if the face state uses the reference value for testing or operation.
+    pub fn needs_ref_value(&self) -> bool {
+        self.compare.needs_ref_value()
+            || self.fail_op == StencilOperation::Replace
+            || self.depth_fail_op == StencilOperation::Replace
+            || self.pass_op == StencilOperation::Replace
+    }
 }
 
 impl Default for StencilFaceState {