MinigpuPlatform class abstract

Constructors

MinigpuPlatform()

Properties

drainSpinBudgetMs → int?

Yield-spin budget (ms) the LOADED native binary implements before the event drain degrades to coarse sleeping, or null where it can't be asked (web, or a binary predating the export).

no setter

hashCode → int

The hash code for this object.

no setter, inherited

runtimeType → Type

A representation of the runtime type of the object.

no setter, inherited

selectedAdapterName → String?

Name of the adapter Dawn actually selected, or null when the context is not initialized / the platform does not expose it.

no setter

shaderCacheDirectory → String?

Directory the cache is using, or null when it is not using one.

no setter

shaderCacheStats → ShaderCacheStats?

Cache counters for this process, or null where there is no cache.

no setter

Methods

clearShaderCache() → int

Deletes every cached entry; returns how many files were removed.

configureShaderCache({bool? enabled, String? directory, int? maxBytes, String? extraKey}) → bool

Configures the persistent shader cache. Returns true when the change was stored before any context was initialized (so it affects the next device), false when a context is already live or the platform has no shader cache. See Minigpu.configureShaderCache for the full contract.

createBuffer(int bufferSize, BufferDataType dataType) → PlatformBuffer

createComputeShader() → PlatformComputeShader

createD3D11DeviceOnDawnAdapter() → int

Create a D3D11 device on the same DXGI adapter as Dawn's D3D12 device. Returns the ID3D11Device* address (non-zero) or 0 on failure. Windows-only; returns 0 on all other platforms.

createSecondaryPlatform(String adapterFilter) → MinigpuPlatform?

Creates an INDEPENDENT platform context bound to the adapter whose name contains adapterFilter (case-insensitive substring, e.g. "3090") — its own device, queue, and task FIFO. Buffers and shaders created from the returned platform live on that adapter and must not be mixed with another context's resources in a single dispatch. Returns null on platforms without multi-adapter support (web).

createSharedOutputTexture(int width, int height) → PlatformSharedOutputTexture?

Create a cross-API shared output texture (Windows: D3D12<->D3D11 zero-copy via NT shared handle). Returns null on unsupported platforms.

destroyContext() → Future<void>

drainWorkQueue() → void

BLOCKS until every GPU task already queued has run.

importVideoFrame(ExternalVideoBuffer buf) → PlatformVideoTexture?

Import a video frame into GPU texture memory. Returns null if unsupported or on failure.

initializeContext() → Future<void>

isExternalContentTypeSupported(ExternalContentType type) → bool

Returns true if the given content type can be imported on this platform.

isExternalPixelFormatSupported(ExternalPixelFormat format) → bool

Returns true if the given pixel format can be imported on this platform.

listAdapters() → List<GpuAdapterInfo>

Enumerates hardware adapters with their dedicated-VRAM totals and current usage. Empty on platforms without adapter enumeration (web).

noSuchMethod(Invocation invocation) → dynamic

Invoked when a nonexistent method or property is accessed.

inherited

preferDisplayAdapter([bool enable = true]) → bool

Pre-init hint (Windows): 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 import — even on multi-output hybrid systems where the discrete GPU also drives a monitor. The MGPU_ADAPTER_NAME env var still overrides.

queryVramBytes() → int

Returns dedicated VRAM usage in bytes for the primary GPU. Returns -1 on platforms where the query is unavailable.

registerInstance() → MinigpuPlatform

setLogCallback(void callback(int level, String message)?, {int level = 1}) → void

Install a log callback for the native minigpu/Dawn layer.

toString() → String

A string representation of this object.

inherited

Operators

operator ==(Object other) → bool

The equality operator.

inherited

Static Properties

instance → MinigpuPlatform

Returns the current instance; creates if not yet initialized.

no setter