donner::svg::RendererTextureSnapshot Class Reference

Backend-owned GPU texture snapshot produced by a renderer. More...

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

Inheritance diagram for donner::svg::RendererTextureSnapshot:

Public Member Functions
virtual RendererTextureSnapshotBackend	backend () const
	Renderer backend that produced this texture.
virtual Vector2i	dimensions () const =0
	Pixel dimensions of the texture in device pixels.
virtual AlphaType	alphaType () const =0
	Alpha interpretation of the texture contents.
virtual RendererBitmap	takeSnapshot () const
	Capture a CPU-readable copy of this texture.
virtual RendererBitmap	takeSnapshotInterruptibly (const std::function< bool()> &shouldCancel) const
	Capture CPU pixels while honoring cancellation before and after readback. GPU backends override this to poll cancellation throughout their bounded wait.

Detailed Description

Backend-owned GPU texture snapshot produced by a renderer.

The base type is intentionally backend-neutral so compositor/editor code can carry texture payloads without depending on WebGPU, OpenGL, or any concrete graphics API. Backends that support direct texture presentation return a derived type from RendererInterface::takeTextureSnapshot().

Member Function Documentation

alphaType()

virtual AlphaType donner::svg::RendererTextureSnapshot::alphaType ( ) const

nodiscardpure virtual

Alpha interpretation of the texture contents.

Implemented in donner::svg::RendererGeodeTextureSnapshot.

backend()

virtual RendererTextureSnapshotBackend donner::svg::RendererTextureSnapshot::backend ( ) const

inlinenodiscardvirtual

Renderer backend that produced this texture.

Reimplemented in donner::svg::RendererGeodeTextureSnapshot.

dimensions()

virtual Vector2i donner::svg::RendererTextureSnapshot::dimensions ( ) const

nodiscardpure virtual

Pixel dimensions of the texture in device pixels.

Implemented in donner::svg::RendererGeodeTextureSnapshot.

takeSnapshot()

virtual RendererBitmap donner::svg::RendererTextureSnapshot::takeSnapshot ( ) const

inlinenodiscardvirtual

Capture a CPU-readable copy of this texture.

Backends that cannot read texture snapshots return an empty bitmap. The operation may submit GPU work and block for completion, so presentation code should keep using the texture directly and reserve readback for explicit capture, diagnostics, and tests.

Returns

CPU-readable bitmap, or an empty bitmap when readback is unsupported.

Reimplemented in donner::svg::RendererGeodeTextureSnapshot.

takeSnapshotInterruptibly()

virtual RendererBitmap donner::svg::RendererTextureSnapshot::takeSnapshotInterruptibly ( const std::function< bool()> & shouldCancel ) const

inlinenodiscardvirtual

Capture CPU pixels while honoring cancellation before and after readback. GPU backends override this to poll cancellation throughout their bounded wait.

Parameters

shouldCancel

Predicate returning true when the capture must be abandoned.

Reimplemented in donner::svg::RendererGeodeTextureSnapshot.

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

• donner/svg/renderer/RendererInterface.h