From: Chris Duncan <chris@codecow.com>
Date: Thu, 21 May 2026 18:14:49 +0000 (-0700)
Subject: Restrict GL canvas size to a reasonable value instead of letting Firefox go crazy.
X-Git-Tag: v5.1.15~1^2~5
X-Git-Url: https://git.codecow.com/?a=commitdiff_plain;h=d11df98de6f69e698af1d3a5d49588eed615d175;p=nano-pow.git

Restrict GL canvas size to a reasonable value instead of letting Firefox go crazy.
---

diff --git a/test/index.html b/test/index.html
index 451052a..1660fb8 100644
--- a/test/index.html
+++ b/test/index.html
@@ -28,13 +28,13 @@ SPDX-License-Identifier: GPL-3.0-or-later
 
 		const glSize = (canvas => {
 			const gl = canvas.getContext('webgl2')
-			const MAX_VIEWPORT_DIMS = gl.getParameter(gl.MAX_VIEWPORT_DIMS)
-			canvas.height = MAX_VIEWPORT_DIMS?.[0] ?? 0x1000
-			canvas.width = MAX_VIEWPORT_DIMS?.[1] ?? 0x1000
-			return gl.drawingBufferHeight < gl.drawingBufferWidth ? gl.drawingBufferHeight : gl.drawingBufferWidth
+			const MAX_VIEWPORT_DIMS = gl?.getParameter(gl.MAX_VIEWPORT_DIMS)
+			const size = Math.min(0x2000, ...MAX_VIEWPORT_DIMS) || 0x1000
+			canvas.height = canvas.width = size
+			return gl?.drawingBufferHeight < gl?.drawingBufferWidth ? gl?.drawingBufferHeight : gl?.drawingBufferWidth
 		})(new OffscreenCanvas(0, 0))
 
-		function random (size = 64) {
+		function random(size = 64) {
 			let hex = ''
 			while (hex.length < size) {
 				hex += crypto.randomUUID().replace(/-.*-/g, '')