donner::geode::GeodeSnapshotReadbackPipeline Class Reference

Compute pipeline for GPU-side snapshot unpremultiplication. More...

#include "donner/svg/renderer/geode/GeodePipeline.h"

Public Member Functions
	GeodeSnapshotReadbackPipeline (gpu::Device &device)
	Create the snapshot-unpremultiply compute pipeline on device from the precompiled artifact.
	GeodeSnapshotReadbackPipeline (const GeodeSnapshotReadbackPipeline &)=delete
GeodeSnapshotReadbackPipeline &	operator= (const GeodeSnapshotReadbackPipeline &)=delete
	GeodeSnapshotReadbackPipeline (GeodeSnapshotReadbackPipeline &&other) noexcept=default
	Construct by moving another instance's state.
GeodeSnapshotReadbackPipeline &	operator= (GeodeSnapshotReadbackPipeline &&other) noexcept=default
	Replace this object's state by moving another instance.
bool	valid () const
	True when the bind group layout and compute pipeline were created.
const gpu::ComputePipeline &	pipeline () const
	The compute pipeline.
const gpu::BindGroupLayout &	bindGroupLayout () const
	The bind group layout used by the pipeline.
uint32_t	inputBinding () const
	Reflected binding of the premultiplied source texture.
uint32_t	outputBinding () const
	Reflected binding of the straight-alpha storage destination.
gpu::WorkgroupSize	workgroupSize () const
	Workgroup shape the entry point declares.

Detailed Description

Compute pipeline for GPU-side snapshot unpremultiplication.

Reads a premultiplied-alpha render target (texture_2d<f32>) and writes straight-alpha RGBA8 into a write-only rgba8unorm storage texture; both binding slots and the workgroup shape come from the precompiled artifact's reflected interface. Owned lazily by GeodeDevice so every snapshot sharing the device reuses one compiled pipeline (issue #575: wgpu-native retains compiled pipelines).

The stored bytes replicate the CPU round-half-up reference formula in RendererGeode::ReadGeodeTextureSnapshot exactly, so snapshots produced through this pipeline are byte-identical to the CPU readback path.

Constructor & Destructor Documentation

GeodeSnapshotReadbackPipeline() [1/2]

donner::geode::GeodeSnapshotReadbackPipeline::GeodeSnapshotReadbackPipeline ( gpu::Device & device )

explicit

Create the snapshot-unpremultiply compute pipeline on device from the precompiled artifact.

Parameters

device

Runtime device the pipeline and its layouts are created on.

GeodeSnapshotReadbackPipeline() [2/2]

donner::geode::GeodeSnapshotReadbackPipeline::GeodeSnapshotReadbackPipeline ( GeodeSnapshotReadbackPipeline && other )

defaultnoexcept

Construct by moving another instance's state.

Parameters

other

Source object.

Member Function Documentation

operator=()

GeodeSnapshotReadbackPipeline & donner::geode::GeodeSnapshotReadbackPipeline::operator= ( GeodeSnapshotReadbackPipeline && other )

defaultnoexcept

Replace this object's state by moving another instance.

Parameters

other

Source object.

Returns

This object after the move.

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The documentation for this class was generated from the following file:

• donner/svg/renderer/geode/GeodePipeline.h