[Feat] (trace-replay): add Minecraft startup trace

tools/trace_replay/README.md

@@ -3,9 +3,12 @@
 This directory builds a Linux command line replay runner for apitrace files. It is meant for CI coverage of MobileGL
 without Android, APK packaging, FCL, or plugin runtime dependencies.
 
-The bundled `openra` fixture comes from GL4ES' apitrace corpus. See
-[GL4ES_TRACES.md](GL4ES_TRACES.md) for the current inventory and the traces that
-were rejected because they rely on compatibility/fixed-function OpenGL.
+The bundled fixtures cover:
+
+- `OpenRA`: sourced from GL4ES' apitrace corpus. See [GL4ES_TRACES.md](GL4ES_TRACES.md) for the current inventory and
+  traces rejected because they rely on compatibility/fixed-function OpenGL.
+- `minecraft-1.21.4-startup`: captured from Minecraft 1.21.4's Mojang Studios startup screen. The fixture is trimmed
+  to call 92195, immediately after the startup screen draw into Minecraft's offscreen framebuffer.
 
 Build from the MobileGL repository root:
 
@@ -17,10 +20,10 @@ cmake -S . -B build-test -G Ninja \
 cmake --build build-test
 ```
 
-Run the OpenRA fixture test:
+Run the fixture tests:
 
 ```sh
-ctest --test-dir build-test -V -R MobileGLTraceReplay.OpenRA
+ctest --test-dir build-test -V -R 'MobileGLTraceReplay\.'
 ```
 
 Run the CLI directly:
@@ -43,5 +46,8 @@ build-test/tools/trace_replay/mobilegl_trace_replay \
   --fuzz-percent 20
 ```
 
+The Minecraft startup fixture uses `tools/trace_replay/fixtures/minecraft-1.21.4-startup.tgz`, golden image
+`minecraft-1.21.4-startup.0000092195.png`, `--target-call 92195`, `--width 854`, and `--height 480`.
+
 The Linux runner loads MobileGL by path with `dlopen`. It uses an EGL pbuffer for `DirectGLES` and maps the pbuffer
 path to `VK_EXT_headless_surface` for `DirectVulkan`, so CI does not need an X11 or Wayland window.