donner::svg::RenderSnapshot Class Reference

Immutable command stream captured from a prepared SVG document. More...

#include "donner/svg/renderer/RenderSnapshot.h"

Public Member Functions
	RenderSnapshot ()
	Create an empty render snapshot.
	~RenderSnapshot ()
	Destructor.
	RenderSnapshot (RenderSnapshot &&other) noexcept
	Move constructor.
RenderSnapshot &	operator= (RenderSnapshot &&other) noexcept
	Move assignment.
	RenderSnapshot (const RenderSnapshot &other)=delete
RenderSnapshot &	operator= (const RenderSnapshot &other)=delete
std::uint64_t	sourceRevision () const
	Source document revision observed when this snapshot was captured.
std::size_t	commandCount () const
	Number of renderer commands stored in this snapshot.
std::size_t	estimatedCommandStorageBytes () const
	Estimated bytes used by the snapshot command stream.
std::size_t	liveRegistryReferenceCountForTesting (const Registry &registry) const
	Count snapshot-owned command references that still point at registry.
bool	fontPayloadLimitExceeded () const
	True when snapshot text exceeded the font-byte budget and some fonts were omitted.
void	replay (RendererInterface &renderer) const
	Replay the captured command stream into renderer.

Static Public Attributes
static constexpr std::size_t	kMaximumCapturedFontBytes = 128 * 1024 * 1024
	Maximum font bytes copied into one snapshot across all source registries.

Friends
class	RenderSnapshotRecorder
class	RendererDriver

Detailed Description

Immutable command stream captured from a prepared SVG document.

Snapshot capture may inspect the live ECS registry, but replay emits only the recorded renderer commands. Resource references embedded in those commands point at snapshot-owned storage so backend replay does not dereference the live document registry.

Member Function Documentation

estimatedCommandStorageBytes()

std::size_t donner::svg::RenderSnapshot::estimatedCommandStorageBytes ( ) const

nodiscard

Estimated bytes used by the snapshot command stream.

This counts the command vector allocation and snapshot implementation object. It intentionally does not include nested allocations owned by command payloads, such as paths, text spans, filter graphs, or paint-server resource components.

liveRegistryReferenceCountForTesting()

std::size_t donner::svg::RenderSnapshot::liveRegistryReferenceCountForTesting ( const Registry & registry ) const

nodiscard

Count snapshot-owned command references that still point at registry.

This is a test-only invariant helper: a captured snapshot should not retain any EntityHandle into the live document registry.

Parameters

registry

Registry that must not be referenced by replay payloads.

replay()

void donner::svg::RenderSnapshot::replay

(

RendererInterface &

renderer

)

const

Replay the captured command stream into renderer.

Parameters

renderer

Backend receiving the recorded commands.

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

• donner/svg/renderer/RenderSnapshot.h