enricobuehler
a69a83b545
The vendor-agnostic DXVA path for GPUs without Vulkan Video (Intel's Windows driver foremost, which previously landed on CPU decode). Ported from the retired WinUI presenter's decoder with its Intel-safe discipline intact (decode pool stays libavcodec-derived — a hand-built pool broke Intel at the first SubmitDecoderBuffers), on a decode device LUID-matched to the presenter's adapter. Hand-off is a ring of shareable BGRA8 textures (SHARED_NTHANDLE | SHARED_KEYEDMUTEX) filled by the fixed-function ID3D11VideoProcessor (NV12/P010 → BGRA8, colour spaces from the per-frame CICP; PQ is tone-mapped to SDR by the processor — HDR-first boxes take Vulkan Video). BGRA is deliberate: importing a multiplanar NV12 D3D11 texture device-losts on NVIDIA however it is consumed (plane-view sampling and DMA copy both validation-clean, both TDR — bisected), while single-plane RGBA D3D11↔Vulkan interop is the path Chromium/ANGLE exercise on every driver. The presenter imports a slot's NT handle per frame (VK_KHR_external_memory_win32, gated on the spec-required external-format probe) and blits it into the video image — no CSC pass; the DXGI keyed mutex (key 0 both sides, drop-tolerant) is the cross-API lock and visibility barrier. Verified live vs a real host at 5120x1440@240 HEVC on an RTX 4090: 240 fps, e2e 2.7/3.0 ms p50/p95 under the Khronos validation layer — parity with Vulkan Video (2.6 ms); auto still resolves vulkan on NVIDIA. PUNKTFUNK_DECODER=d3d11va forces it; import/present failures demote to software on the existing streak contract. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
38 lines
1.6 KiB
Rust
38 lines
1.6 KiB
Rust
//! The Vulkan session presenter (punktfunk-planning `linux-client-rearchitecture.md`,
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//! Phase 1): an SDL3 window + ash swapchain that presents the shared session pump's
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//! decoded frames, captures input on the `ui_stream` state-machine contract, and reports
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//! the unified stats window on stdout. No UI toolkit anywhere in the dependency tree.
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//!
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//! Three frame paths: software (`CpuFrame` RGBA staging upload), Vulkan Video (the
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//! decoder's VkImage on THIS device — plane views + the CICP-driven CSC pass), and on
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//! Linux additionally VAAPI hardware (NV12 dmabuf imported per-plane — `dmabuf.rs`),
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//! all composited by a letterboxed blit. Devices without the import extensions, and any
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//! import/present failure streak, demote the decoder to software via the session pump's
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//! `force_software` contract, same as the GTK presenter.
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//!
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//! Builds on Linux AND Windows; `dmabuf` is Linux-only (DRM-PRIME does not exist on
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//! Windows) and `d3d11` is its Windows counterpart (D3D11VA shared-texture import) —
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//! the decode chain there is Vulkan → D3D11VA → software.
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#[cfg(any(target_os = "linux", windows))]
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pub mod csc;
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#[cfg(windows)]
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pub mod d3d11;
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#[cfg(target_os = "linux")]
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pub mod dmabuf;
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#[cfg(any(target_os = "linux", windows))]
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pub mod input;
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#[cfg(any(target_os = "linux", windows))]
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pub mod keymap_sdl;
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#[cfg(any(target_os = "linux", windows))]
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pub mod overlay;
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#[cfg(any(target_os = "linux", windows))]
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mod run;
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#[cfg(any(target_os = "linux", windows))]
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pub mod vk;
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#[cfg(windows)]
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mod win32;
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#[cfg(any(target_os = "linux", windows))]
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pub use run::{run_browse, run_session, ActionOutcome, Outcome, SessionOpts};
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