Integrate osu-framework/veldrid fork features: D3D12, low-latency provider, Vulkan optimizations

[Copilot]

Updates osu-framework submodule to latest master, pulling in the full D3D12 backend, low-latency provider API, and comprehensive Vulkan/OpenGL optimizations from both the framework and veldrid forks. Exposes the new LatencyMode setting in the renderer settings UI.

Submodule updates

• osu-framework 5c10d7d → 394ecf5d1
• veldrid 2202b40 → db70f1b (transitive via framework)

What's now active

Veldrid Vulkan

• VK_KHR_push_descriptor — eliminates descriptor pool allocation per draw
• VK_KHR_dynamic_rendering — drops VkRenderPass/VkFramebuffer overhead on 1.3+
• VK_EXT_host_image_copy — direct CPU→GPU texture upload, bypasses staging buffers
• VkPipelineCache — driver-side pipeline caching
• VK_EXT_memory_budget, VK_EXT_descriptor_indexing, VK_KHR_fragment_shading_rate, VK_EXT_mesh_shader

Veldrid D3D12

• Full backend via Vortice 3.8.3 — enhanced barriers, VRS, mesh shaders, raytracing capability detection

Framework

• ILowLatencyProvider + LatencyMode (Off/On/Boost) — generic Reflex/LatencyFlex plumbing with FrameSleep() and latency markers around sim/render/present
• FrameSync.UVSync — draw+update at refresh rate (unbuffered vsync)
• FrameSync.Custom — user-defined draw limit
• SDL3 raw keyboard + async key event bypass when text input inactive
• EGL_ANDROID_front_buffer_auto_refresh on Android GL path
• OpenGL pipeline state caching in OpenGLCommandExecutor

osu changes

• Added LatencyMode dropdown to RendererSettings with localisation string
• No other osu-layer changes needed — D3D12 renderer selection, UVSync/Custom frame sync modes, and raw keyboard are handled entirely by the framework

// New setting in RendererSettings.cs
new SettingsItemV2(new FormEnumDropdown<LatencyMode>
{
    Caption = GraphicsSettingsStrings.LowLatency,
    Current = config.GetBindable<LatencyMode>(FrameworkSetting.LatencyMode),
})

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[Copilot]

Pull request overview

Updates the project to integrate newer osu-framework/veldrid capabilities (notably low-latency mode plumbing and Vulkan/D3D12-related improvements) and surfaces the new low-latency setting in the osu! UI. Also extends the Android native Vulkan probe and Oboe audio bridge to support newer capability reporting and updated Oboe callback APIs.

Changes:

• Add a LatencyMode dropdown to renderer settings, with a new localisation string.
• Extend Android Vulkan probe to improve capability detection/reporting (incl. new exported flags) and adjust present-mode assumptions.
• Update Android native audio bridge to use non-deprecated Oboe callback APIs and add defensive clamping around provider frame counts; adjust native build/link settings.

Reviewed changes

Copilot reviewed 11 out of 11 changed files in this pull request and generated 1 comment.

Show a summary per file

File	Description
osu.Game/Overlays/Settings/Sections/Graphics/RendererSettings.cs	Adds UI dropdown for LatencyMode bound to FrameworkSetting.LatencyMode.
osu.Game/Localisation/GraphicsSettingsStrings.cs	Adds localisation entry for the “Low latency” setting caption.
osu.Android/Native/vulkan_bridge.h	Extends DeviceInfo with additional capability flags (Vulkan 1.4+, host image copy, push descriptors).
osu.Android/Native/vulkan_bridge.cpp	Updates Vulkan probing flow/logging, extension detection, vendor quirks, and exports new P/Invoke functions.
osu.Android/Native/VulkanProbe.cs	Adds managed accessors/PInvoke declarations for the new native Vulkan probe flags.
osu.Android/AndroidNativeBridgeManager.cs	Adjusts Vulkan status string and logging to reflect updated probe fields.
osu.Android/Native/oboe_bridge.h	Switches StabilizedCallback ownership to shared_ptr for non-deprecated builder API usage.
osu.Android/Native/oboe_bridge.cpp	Migrates to setFramesPerDataCallback + shared_ptr callback APIs; adds safety clamp for provider frame counts.
osu.Android/Native/CMakeLists.txt	Tweaks release flags (thin LTO), improves Oboe fetch rationale, and makes find_library fail-fast.
osu.Android.props	Ensures framework-provided native .so dependencies are packaged when using a ProjectReference.

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[Copilot]

meetsVulkan14 is computed using only VK_VERSION_MINOR(apiVersion) >= 4, which will incorrectly return false for any future Vulkan major versions (e.g. 2.0) even though they should satisfy the “>= 1.4” check. Consider comparing against VK_MAKE_VERSION(1, 4, 0) (or major > 1 || (major == 1 && minor >= 4)) instead of relying on the minor value alone.

Suggested change

	if (VK_VERSION_MINOR(deviceInfo_.apiVersion) >= 4)
	if (deviceInfo_.apiVersion >= VK_MAKE_VERSION(1, 4, 0))