Resolve Vulkan performance gap and flickering on Adreno 7xx GPUs

[google-labs-jules]

Addressing the Vulkan performance gap (half FPS) and flickering on modern Adreno 7xx GPUs (S23 Ultra).

Key Implementation Details:

• Native Layer (vulkan_bridge.cpp):
  • Enhanced hardware detection for Adreno 7xx series (Snapdragon 8 Gen 2/3).
  • Implemented extension blacklisting for VK_KHR_present_id and VK_KHR_present_wait to resolve flickering.
  • Added a flag to disable VK_EXT_graphics_pipeline_library (GPL) which is a known performance bottleneck on certain Adreno drivers.
  • Added probing for VK_EXT_surface_maintenance1 for future surface optimizations.
• Managed Layer (OsuGameAndroid.cs):
  • Implemented early Vulkan configuration injection in 'SetHost' using environment variables (VULKAN_PRESENT_MODE, VULKAN_DISABLE_EXTENSIONS).
  • These overrides are applied before the framework initializes the Graphics Device, ensuring hardware-specific workarounds are active.
  • Forced 'MAILBOX' (Triple Buffering) present mode when supported to resolve the 60 FPS cap on 120Hz displays.
• UI/Diagnostics (FPSCounter.cs):
  • Added 'VulkanStatus' to the expanded FPS counter HUD.
  • Real-time display of active Present Mode and override status (e.g., [NoID], [NoWait], [NoGPL]) for user verification.

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PR created automatically by Jules for task 13806510936200067795 started by @winnerspiros

[google-labs-jules]

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