3 files changed, 41 insertions, 0 deletions
diff --git a/packages/frontend-embed/src/workers/draw-blurhash.ts b/packages/frontend-embed/src/workers/draw-blurhash.ts
new file mode 100644
index 0000000000..22de6cd3a8
--- /dev/null
+++ b/packages/frontend-embed/src/workers/draw-blurhash.ts
@@ -0,0 +1,22 @@
+/*
+ * SPDX-FileCopyrightText: syuilo and misskey-project
+ * SPDX-License-Identifier: AGPL-3.0-only
+ */
+
+import { render } from 'buraha';
+
+const canvas = new OffscreenCanvas(64, 64);
+
+onmessage = (event) => {
+	// console.log(event.data);
+	if (!('id' in event.data && typeof event.data.id === 'string')) {
+		return;
+	}
+	if (!('hash' in event.data && typeof event.data.hash === 'string')) {
+		return;
+	}
+
+	render(event.data.hash, canvas);
+	const bitmap = canvas.transferToImageBitmap();
+	postMessage({ id: event.data.id, bitmap });
+};
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 });
+}
diff --git a/packages/frontend-embed/src/workers/tsconfig.json b/packages/frontend-embed/src/workers/tsconfig.json
new file mode 100644
index 0000000000..8ee8930465
--- /dev/null
+++ b/packages/frontend-embed/src/workers/tsconfig.json
@@ -0,0 +1,5 @@
+{
+	"compilerOptions": {
+		"lib": ["esnext", "webworker"],
+	}
+}