donner::geode::GeodeImagePipeline Class Reference

Caches a compiled render pipeline for the image-blit shader plus its bind group layout and two reusable samplers (linear and nearest). More...

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

Public Member Functions
	GeodeImagePipeline (GeodeWgpuAdapterDevice &adapterDevice, gpu::TextureFormat colorFormat)
	Create an image-blit pipeline for the given device and target format.
	GeodeImagePipeline (const GeodeImagePipeline &)=delete
GeodeImagePipeline &	operator= (const GeodeImagePipeline &)=delete
	GeodeImagePipeline (GeodeImagePipeline &&) noexcept=default
	Move constructor.
GeodeImagePipeline &	operator= (GeodeImagePipeline &&) noexcept=default
	Move assignment operator.
const gpu::RenderPipeline &	pipeline () const
	The compiled render pipeline.
const gpu::BindGroupLayout &	bindGroupLayout () const
	Bind group layout used by the pipeline.
const gpu::Sampler &	linearSampler () const
	Bilinear (mag/min filter = Linear) sampler, clamped to edge. Used for the default image-rendering and the SVG spec's "smooth" image sampling.
const gpu::Sampler &	nearestSampler () const
	Nearest-neighbor sampler, clamped to edge. Used when ImageRendering::CrispEdges or its legacy alias is selected.
const gpu::Sampler &	clipMaskSampler () const
	Linear clamp-to-edge sampler used for path-clip mask textures.
gpu::TextureFormat	colorFormat () const
	Color format the pipeline was built for.

Detailed Description

Caches a compiled render pipeline for the image-blit shader plus its bind group layout and two reusable samplers (linear and nearest).

One GeodeImagePipeline is sufficient per (device, render-target-format) pair. It is used both by drawImage (SVG <image> elements) and by the pattern renderer: the pattern tile is rendered to an offscreen texture and then sampled with this same pipeline as a repeating fill.

The pipeline and samplers are created through the donner::gpu runtime, which owns them through RAII handles.

Bind group layout (matches shaders/image_blit.wgsl):

• binding 0: uniform buffer (mvp, destRect, srcRect, targetSize, opacity, flags)
• binding 1: sampler (filter mode chosen at draw time)
• binding 2: sampled texture 2D (float)
• binding 3: sampled mask texture for <mask> luminance mode
• binding 4: sampled destination snapshot for mix-blend-mode
• binding 5: sampled path-clip mask texture
• binding 6: clip-mask sampler (always linear clamp-to-edge)

The pipeline takes no vertex buffer - the shader generates quad corners from @builtin(vertex_index). A draw call is pass.Draw(6, 1, 0, 0).

Constructor & Destructor Documentation

GeodeImagePipeline()

donner::geode::GeodeImagePipeline::GeodeImagePipeline	(	GeodeWgpuAdapterDevice &	adapterDevice,
		gpu::TextureFormat	colorFormat )

Create an image-blit pipeline for the given device and target format.

Parameters

adapterDevice	The Donner GPU device (wgpu adapter) owned by the GeodeDevice.
colorFormat	The pixel format of the render target this pipeline will draw into. Must match the target texture's format at draw time.

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

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