1 files changed, 14 insertions, 0 deletions
diff --git a/packages/frontend-embed/src/workers/test-webgl2.ts b/packages/frontend-embed/src/workers/test-webgl2.ts
new file mode 100644
index 0000000000..b203ebe666
--- /dev/null
+++ b/packages/frontend-embed/src/workers/test-webgl2.ts
@@ -0,0 +1,14 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+const canvas = globalThis.OffscreenCanvas && new OffscreenCanvas(1, 1);
+// 環境によってはOffscreenCanvasが存在しないため
+// eslint-disable-next-line @typescript-eslint/no-unnecessary-condition
+const gl = canvas?.getContext('webgl2');
+if (gl) {
+	postMessage({ result: true });
+} else {
+	postMessage({ result: false });
+}