WebGPU renderer complete: dirty uploads, default limits, legacy removed, WebGPU required, warm-up (t88 phase 2d)

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

test/firefox_smoke.py

@@ -26,13 +26,14 @@ with launch(browser_name='firefox') as (_, page, url):
         text = page.inner_text('#cap-notice')
         assert 'about:config' in text and 'dom.webgpu.enabled' in text and 'Firefox Nightly' in text
     print('PASS Firefox isolation and capability notice')
-    page.click('#btn-new')
-    page.fill('#nw-seed', '424242')
-    page.select_option('#nw-size', '2048x1024')
-    page.click('#btn-generate')
-    page.wait_for_function('GAME.running && !GAME.loading', timeout=60000)
-    before = page.evaluate('tick')
-    page.wait_for_timeout(3000)
-    assert page.evaluate('tick') > before
-    assert not errors, errors
-    print('PASS Firefox new world runs for three seconds without page errors')
+    if not caps['webgpu']:
+        assert not page.evaluate('canStartGame()')
+        assert not page.evaluate('startNewWorld(424242,512,384)')
+        assert not page.evaluate('GAME.running')
+        print('PASS Firefox without WebGPU cannot start a world')
+    else:
+        page.evaluate('startNewWorld(424242,512,384)')
+        page.wait_for_function('GAME.running && !GAME.loading',timeout=60000)
+        before=page.evaluate('tick');page.wait_for_timeout(3000)
+        assert page.evaluate('tick')>before
+    assert not errors,errors