| macOS graphics model |
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| Rendering |
| Compositing |
 | This article needs to beupdated. Please help update this article to reflect recent events or newly available information.(April 2021) |
InApple'smacOS operating system,Quartz is theQuartz 2D andQuartz Compositor part of the Core Graphics framework. Quartz includes both a 2D renderer in Core Graphics and the composition engine that sends instructions to the graphics card. Because of this vertical nature,Quartz is often synonymous withCore Graphics.[1]
In a general sense,Quartz orQuartz technologies can refer to almost every part of themacOS graphics model from the rendering layer down to the compositor including Core Image and Core Video.[2] Other Apple graphics technologies that use the "Quartz" prefix include these:
Quartz 2D is the primary two-dimensional (2D) text and graphics rendering library: It directly supportsAqua by displayingtwo-dimensional graphics to create the user interface, including on-the-flyrendering andanti-aliasing. Quartz can render text withsub-pixel precision; graphics are limited to more traditional anti-aliasing, which is the default mode of operation but can be turned off.[3] InMac OS X 10.4 Tiger, Apple introduced Quartz 2D Extreme, enabling Quartz 2D to offload rendering to compatibleGPUs. However, GPU rendering was not enabled by default due to potential video redraw issues orkernel panics.[4] InMac OS X v10.5 Quartz 2D Extreme was renamed to QuartzGL.
TheQuartz Compositor is thecompositing engine used bymacOS. InMac OS X Jaguar and later, the Quartz Compositor can use the graphics accelerator (GPU) to vastly improve composition performance. This technology is known as Quartz Extreme and is enabled automatically on systems with supported graphics cards.[1]
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