Served with isolation headers; start-screen capability notices; tests on the real GPU (t88 phase 1)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
2026-10-27 19:11:42 -04:00
parent 9781aa3ee1
commit b2c9ad9533
22 changed files with 376 additions and 91 deletions
@@ -0,0 +1,52 @@
+"""Capability detection, title warnings and the future startup gate."""
+from pathlib import Path
+import sys
+
+sys.path.insert(0, str(Path(__file__).resolve().parent.parent / 'tools'))
+from use_venv import ensure_playwright
+ensure_playwright()
+from browser import capabilities, consume_gpu_option, launch
+
+consume_gpu_option()
+for case in ['native', 'absent', 'null', 'reject', 'firefox', 'required']:
+    with launch() as (_, page, url):
+        errors = []
+        page.on('pageerror', lambda e: errors.append(str(e)))
+        if case != 'native':
+            gpu = 'undefined' if case == 'absent' else "{requestAdapter: async () => null}"
+            if case == 'reject': gpu = "{requestAdapter: async () => {throw new Error('adapter denied')}}"
+            page.add_init_script(f"Object.defineProperty(navigator, 'gpu', {{value: {gpu}}});")
+            page.add_init_script("Object.defineProperty(self, 'crossOriginIsolated', {value: false});")
+        if case == 'firefox':
+            page.add_init_script("Object.defineProperty(navigator, 'userAgent', {value: 'Firefox/157.0'});")
+        if case == 'required':
+            def require(route):
+                response = route.fetch()
+                route.fulfill(response=response, body=response.text().replace(
+                    'const REQUIRE_GPU_AND_THREADS = false;', 'const REQUIRE_GPU_AND_THREADS = true;'))
+            page.route('**/index.html', require)
+        page.goto(url)
+        caps = capabilities(page)
+        page.wait_for_function("!$('title').hidden")
+        if case == 'native':
+            assert caps['isolated']
+            assert page.locator('#cap-notice').is_hidden() == caps['webgpu']
+        else:
+            assert not caps['webgpu'] and caps['adapterInfo'] is None
+            notice = page.inner_text('#cap-notice')
+            assert 'python3 tools/serve.py' in notice and "opened from a file it can't" in notice
+            assert ('Firefox Nightly' in notice and 'dom.webgpu.enabled' in notice) if case == 'firefox' else 'Chrome or Edge' in notice
+            if case == 'required':
+                assert not page.evaluate('canStartGame()')
+                page.evaluate('startNewWorld(424242, 512, 384)')
+                assert not page.evaluate('GAME.running || GAME.loading')
+                assert not page.evaluate('startFromSave({})')
+            else:
+                assert page.evaluate('canStartGame()')
+            if case == 'absent':
+                Path('shots').mkdir(exist_ok=True)
+                page.screenshot(path='shots/t88-p1-notice.png')
+                page.evaluate("SET.look='pixel'; startNewWorld(424242, 512, 384)")
+                page.wait_for_function('GAME.running && !GAME.loading', timeout=60000)
+        assert not errors, errors
+        print(f'PASS capabilities: {case}')