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Examples

Learn how the example apps demonstrate still-image, live-video, compositing, and custom-shader integration.

RasterExamples.xcodeproj is a collection of small rendering paths rather than a single tutorial application. Each screen owns enough setup to show how a feature behaves in a real Apple-platform target: where the context lives, how an image reaches the filter, and which output path drives the view or recorder.

Running the project

Open RasterExamples.xcodeproj, choose either the iOS or macOS scheme, and build. The package is resolved from the repository checkout, so edits to framework source are visible without publishing a version.

The macOS example retains a pinned VideoIO dependency whose source is not accepted by Xcode 26 without an upstream compatibility change. Raster's integration driver reports that boundary explicitly and continues through the framework-owned gates. The iOS example remains part of the normal unsigned build validation.

Example index

Example	What it demonstrates
`SimpleImageFilterView`	The shortest source → filter → display path.
`ImageFilterView`	Parameterized still-image filters and interactive updates.
`BlendModesView`	Two-input blend modes and their visible differences.
`MultilayerCompositingFilterView`	Layer transforms, masks, tint, and compositing order.
`CameraFilterView`	Live `CVPixelBuffer` input and filtered preview.
`VideoProcessorView`	File-based video composition and export integration.
`CLAHEFilterView`	MPS-backed local contrast processing.
`BokehEffectView`	A larger graph combining multiple filters.
`SketchBoardView`	Custom rendering and interactive content.
`SceneKitSupportView`	Rendering a SceneKit scene into the Raster graph.

Using the examples

The examples include application concerns such as media pickers, camera sessions, and SwiftUI state. When you copy a pattern, the Raster pieces are the useful part. The demo's UI lifetime is not.

In production, the context generally belongs to a renderer or service, filters belong to the operation that configures them, and views consume immutable output images.

Source

RasterExamples.xcodeproj                     Schemes, targets, package wiring
RasterExamples/Shared/HomeView.swift         Example index
RasterExamples/Shared/MetalKitView.swift     Metal-backed display bridge
RasterExamples/Shared/Shaders.metal          Downstream shader integration
Scripts/test-integration.sh                  Clean consumer and example gates