donner::geode::GeodeMaskPipeline Class Reference

Caches a compiled render pipeline for the path-clip mask shader (shaders/slug_mask.wgsl) plus its bind-group layout. More...

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

Public Member Functions
	GeodeMaskPipeline (GeodeWgpuAdapterDevice &adapterDevice)
	Create a Slug mask pipeline for the given device.
	GeodeMaskPipeline (const GeodeMaskPipeline &)=delete
GeodeMaskPipeline &	operator= (const GeodeMaskPipeline &)=delete
	GeodeMaskPipeline (GeodeMaskPipeline &&) noexcept=default
GeodeMaskPipeline &	operator= (GeodeMaskPipeline &&) noexcept=default
const gpu::RenderPipeline &	pipeline () const
	The compiled render pipeline.
const gpu::BindGroupLayout &	bindGroupLayout () const
	The bind group layout used by the pipeline.
gpu::TextureFormat	colorFormat () const
	The color format the pipeline targets. Always RGBA8Unorm.

Detailed Description

Caches a compiled render pipeline for the path-clip mask shader (shaders/slug_mask.wgsl) plus its bind-group layout.

The mask pipeline is a stripped-down sibling of GeodePipeline - it reuses the same vertex shader and band/curve storage SSBOs. The fragment stage replicates scalar analytic coverage into an RGBA8Unorm color attachment. The resulting mask texture is then sampled by GeodePipeline and GeodeGradientPipeline as a clip coverage multiplier.

The bind group layout is:

• binding 0: uniform buffer (mvp, viewport, fillRule).
• binding 1: storage buffer (read-only) - Band[].
• binding 2: storage buffer (read-only) - curve data (flat f32[]).
• bindings 3 and 4: nested clip-mask texture + sampler.
• bindings 5 and 6: vertical Band[] and canonical curve data.
• bindings 7 and 8: horizontal and vertical dense band grids.
• bindings 9 and 10: horizontal and vertical curve-reference indexes.

Multiple paths belonging to a single clip layer are unioned on the hardware side via BlendOperation::Max.

Constructor & Destructor Documentation

GeodeMaskPipeline()

donner::geode::GeodeMaskPipeline::GeodeMaskPipeline ( GeodeWgpuAdapterDevice & adapterDevice )

explicit

Create a Slug mask pipeline for the given device.

Renders into a single-sampled RGBA8Unorm texture.

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

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