Instance Property


The working color space of the Core Image context.


@property(nonatomic, readonly) CGColorSpaceRef workingColorSpace;


The working color space determines the color space used when executing filter kernels; Core Image automatically converts to and from the source and destination color spaces of input images and output contexts. You specify a working color space using the kCIContextWorkingColorSpace key in the options dictionary when creating a Core Image context.

See Also

Managing Resources

- clearCaches

Frees any cached data, such as temporary images, associated with the context and runs the garbage collector.

- reclaimResources

Runs the garbage collector to reclaim any resources that the context no longer requires.

+ offlineGPUCount

Returns the number of GPUs not currently driving a display.


The working pixel format of the Core Image context.