MandatoryHintDetector.h File Reference

#include <cstdint>
#include <unordered_map>
#include "donner/base/EcsRegistry.h"
#include "donner/svg/compositor/ScopedCompositorHint.h"

Include dependency graph for MandatoryHintDetector.h:

This graph shows which files directly or indirectly include this file:

Classes
struct	donner::svg::compositor::MandatoryHintDetectorStats
	Stats produced by MandatoryHintDetector::reconcile(). More...
class	donner::svg::compositor::MandatoryHintDetector
	Subsystem that publishes Mandatory CompositorHint entries for SVG features that force isolated compositing. More...

Namespaces
namespace	donner
	Top-level Donner namespace, which is split into different sub-namespaces such as donner::svg and donner::css.
namespace	donner::svg
	Donner SVG library, which can load, manipulate and render SVG files.
namespace	donner::svg::components
	Contains the implementation of the Donner ECS,.

Enumerations
enum class	donner::svg::compositor::MandatoryHintScope : uint8_t {   All ,   FilterOnly }
	Which mandatory-compositing signals MandatoryHintDetector acts on. More...

Enumeration Type Documentation

MandatoryHintScope

enum class donner::svg::compositor::MandatoryHintScope : uint8_t

strong

Which mandatory-compositing signals MandatoryHintDetector acts on.

Every signal is handled correctly by the renderer driver's inline pushClip / pushMask / pushFilterLayer path when no hint is published (that inline path is what entities under compositing-breaking ancestors already use), so narrowing the scope trades retained-layer caching for per-frame re-render cost without changing pixels.

Enumerator
All	Publish hints for every signal: isolatedLayer (opacity < 1, mix-blend-mode, isolation: isolate), filter, and mask.
FilterOnly	Publish hints only for resolvedFilter.has_value(). Filters dominate re-render cost; opacity groups, blend modes, and masks render inline. A filter nested under an inline isolation ancestor is NOT promoted either (extracting it would split the ancestor's isolation group); it renders fully inline instead.