minigpu_ffi 1.5.7

FFI implementation of minigpu. A library to brings multiplatform GPU compute to Dart and Flutter using GPU.cpp and Google Dawn.

minigpu_ffi CHANGELOG

1.5.7

1.5.6

• New pre-init hint mgpuPreferDisplayAdapter(int enable) (+ Dart preferDisplayAdapter): bind Dawn to the adapter driving the PRIMARY display so screen capture (Desktop Duplication / WGC), GPU processing and any D3D11 encoder created on Dawn's adapter share one GPU — same-adapter zero-copy — even on multi-output hybrid systems where the discrete GPU also drives a monitor (there the automatic "dGPU has no outputs" topology detection cannot see the capture/compute split, so capture used to fall to the Tier C CPU bridge). Returns whether the hint landed before context init; MGPU_ADAPTER_NAME still overrides. Also new: mgpuGetSelectedAdapterName to query which adapter Dawn actually bound.
• Fix hybrid-laptop backend auto-select probing the wrong adapter's cross-adapter capability. Tier B's cross-adapter texture is allocated on the producer (display / iGPU) device, so its viability is gated by the producer's CrossAdapterRowMajorTextureSupported — but startup detection tested the compute (dGPU) adapter instead. On machines where the dGPU advertises the capability but the iGPU does not, minigpu committed to the D3D12 / Tier-B backend and then degraded to the Tier C CPU bridge on every frame ("Tier B: adapter does not support CrossAdapterRowMajorTextureSupported. Falling back to Tier C."). Now the display (capture-producer) adapter's capability is what selects Tier B vs Tier A*; when it lacks the capability we take Tier A* (run Dawn on the iGPU) for zero-copy capture import and keep the FFmpeg HW encoder on the iGPU. Also made the Tier A* adapter binding robust: if the exact display-name match misses, auto-select now prefers the integrated GPU rather than falling back to the discrete one.

1.5.5

• Raise per-device GPU submission priority (IDXGIDevice::SetGPUThreadPriority(+7)) on the cached D3D11 device (both the Dawn-native-D3D11 fast path and the created-on-Dawn-adapter path), so minigpu's compute/copy submissions are less starved when another process saturates the GPU. Best-effort; failure is logged.
• Tier B (D3D12 cross-adapter bridge) probing now caches a sticky negative result per adapter: when the adapter lacks CrossAdapterRowMajorTextureSupported (or any Tier B init step fails), the probe used to re-run D3D12CreateDevice and re-log "Falling back to Tier C" on every call — frame-rate log spam plus wasted per-frame device creation. It now probes and warns once per adapter per process.

1.5.4

• fix release version pins

1.5.3

• Implement copyFromBufferAsync / bgraToRgbaSharedOutputAsync. New native exports mgpuCopyBufferToSharedOutputTextureAsync / mgpuVideoTextureBGRAToRGBASharedOutputAsync run the copy (including the wgpuQueueOnSubmittedWorkDone present sync) on the WebGPU worker thread and invoke a Dart NativeCallable completion callback, so the calling isolate is no longer blocked on the present-wait busy-poll.

1.5.2

• Add buffer copy

1.5.1

• fix frame wait and timeouts

1.5.0

• Fix handle issue, release 1.5.0

1.4.15

• fix fallback paths

1.4.14

• fix Tier C

1.4.12

• fix texture path

1.4.11

• fixing build hook

1.4.9

• tryfix central dawn location

1.4.8

• fixes texture path on windows, fixes texture view on web

1.4.7

• Fixes logger characters

1.4.6

• fix garbled adapter name in logs: WGPUStringView.data is not null-terminated, copy to std::string before passing to snprintf
• fix garbled adapter name in logs: WGPUStringView.data is not null-terminated, copy to std::string before passing to snprintf

1.4.5

• fix Dawn built inside pub-cache instead of system dir: pass DAWN_DIR from Dart hook as cmake -D define so cmake subprocess inherits the correct path regardless of env; fix FETCHCONTENT_BASE_DIR pointing to pub-cache (now uses cmake binary dir)
• add Minigpu.setLogCallback / setLogLevel: routes native Dawn/GPU log lines through a Dart callback (NativeCallable.listener); mgpuSetLogCallback + mgpuSetLogLevel exported from C layer; all stderr calls in minigpu_external.cpp replaced with structured LOG_ERROR/INFO/WARN/DEBUG macros

1.4.4

• fix FormatException on non-UTF-8 bytes in setLogCallback: use Utf8Decoder(allowMalformed: true) instead of toDartString()

1.4.3

• add dawn::native::Instance + EnumerateAdapters for explicit adapter type selection
• improve adapter selection to prefer discrete GPU using dawn native EnumerateAdapters; fixes incorrect adapter picked on Optimus laptops

1.4.2

• fixes dawn library not being found

1.4.1

• added bindings observer

1.4.0

• adds minigpu_view, gpu_pipeline libraries

1.3.0

• Adds Texture Sharing

1.2.4-WIP

• working on texture imports

1.2.3

• adds VRAM API
• fixes memleaks and broken tests

1.2.2

• fixes memleaks and broken tests

1.2.1

• Fix: fresh builds need dawn find off
• Change: 1.2.0 migrates minigpu to direct webgpu usage
• Breaking: Changed setData and references to .write
• Fix: broken compute shader and buffer finalizers

1.2.0

1.1.9

• fix pubspec version issue

1.1.8

• fixed concurrent buffer op crash

1.1.6

• fixed problem with audio input capture providing raw data

1.1.5

• Fixed memory leaks