SolidFill.h File Reference

The complete solid-fill (Slug analytic dual-ray) pipeline program as shader IR. More...

#include "donner/gpu/shader/IrModule.h"
#include "donner/gpu/shader/ShaderResult.h"

Include dependency graph for SolidFill.h:

Namespaces
namespace	donner
	Top-level Donner namespace, which is split into different sub-namespaces such as donner::svg and donner::css.

Functions
ShaderResult< IrModule >	donner::gpu::shader::programs::BuildSolidFillModule ()
	Builds the complete solid-fill IR module: a faithful semantic re-expression of the Donner-owned donner/svg/renderer/geode/shaders/slug_fill.wgsl (the analytic dual-ray coverage algorithm).

Detailed Description

The complete solid-fill (Slug analytic dual-ray) pipeline program as shader IR.

Function Documentation

BuildSolidFillModule()

ShaderResult< IrModule > donner::gpu::shader::programs::BuildSolidFillModule

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Builds the complete solid-fill IR module: a faithful semantic re-expression of the Donner-owned donner/svg/renderer/geode/shaders/slug_fill.wgsl (the analytic dual-ray coverage algorithm).

Contents mirror the WGSL shader function by function: the 352-byte Uniforms struct, Band (32 bytes) and InstanceTransform (32 bytes) storage layouts, all 12 bindings at group 0 with identical binding numbers, the kNoBand sentinel constant, the vs_main vertex stage (per-instance matrix construction, the convex bounding fan expanded from vertex_index, and its per-edge half-pixel dilation with both AABB fallbacks), and the fs_main fragment stage (dense band-grid lookup, accumulateHoriz/accumulateVert analytic ray coverage with owns_axis_sample and the Citardauq-form solve_quadratic, calc_coverage blending, non-zero and even-odd fill rules, convex clip-polygon planes, clip-mask coverage, and the solid premultiplied color and repeat-tiled pattern paint paths).

Entry points are named vs_main / fs_main; struct-typed WGSL stage IO is flattened to annotated parameters/outputs with identical locations and builtins, and .rgba swizzles are transliterated to .xyzw. The Metal vertical slice compares pixels against a frozen baseline rendered by the original WGSL shader, so behavior-affecting constructs must remain semantically identical.