From eab8cd3c43f33c72d2da33e11a8fbe4b72c619b5 Mon Sep 17 00:00:00 2001
From: Chris Lorenzo <chiefcll@gmail.com>
Date: Wed, 1 Jul 2026 20:27:47 -0400
Subject: [PATCH] perf(webgl): drop unused stencil buffer from context
 attributes

No code path uses the stencil buffer (no stencilFunc/stencilOp/STENCIL_TEST;
clipping is scissor-based and clear() only touches COLOR_BUFFER_BIT), but
requesting it costs tile memory bandwidth on every flush on tile-based GPUs
(Mali 400-class targets).

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
---
 src/utils.ts | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/utils.ts b/src/utils.ts
index 714ef6e..4d78e4d 100644
--- a/src/utils.ts
+++ b/src/utils.ts
@@ -9,7 +9,7 @@ export function createWebGLContext(
     alpha: true,
     antialias: false,
     depth: false,
-    stencil: true,
+    stencil: false,
     desynchronized: false,
     // Disabled because it prevents Visual Regression Tests from working
     // failIfMajorPerformanceCaveat: true,