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In Apple computer's OS X operating system, Quartz is the Quartz 2D and Quartz 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 with ''Core Graphics''.〔(【引用サイトリンク】 url=http://developer.apple.com/graphicsimaging/overview.html )〕 In a general sense, ''Quartz'' or ''Quartz technologies'' can refer to almost every part of the graphics model from the rendering layer down to the compositor including Core Image and Core Video.〔(【引用サイトリンク】 url=http://developer.apple.com/reference/GraphicsImaging/idxQuartz-date.html )〕 Other Apple graphics technologies that use the "Quartz" prefix include: * Quartz Extreme * QuartzGL * Quartz 2D Extreme * Quartz Core Framework * Quartz Display Services * Quartz Event Services * Quartz Framework ==Quartz 2D & Quartz Compositor== Quartz 2D is the primary two-dimensional (2D) text and graphics rendering library: It directly supports Aqua by displaying two-dimensional graphics to create the user interface, including on-the-fly rendering and anti-aliasing. Quartz can render text with sub-pixel precision; graphics are limited to more traditional anti-aliasing, which is the default mode of operation but can be turned off.〔(【引用サイトリンク】 url=http://developer.apple.com/documentation/Carbon/Conceptual/QuickDrawToQuartz2D/tq_other/chapter_3_section_3.html ) 〕 In Mac OS X v10.4, Apple introduced Quartz 2D Extreme, which allows Quartz 2D to use supported GPUs for rendering. In 10.4, Quartz 2D Extreme is not enabled by default, because it may lead to video redraw issues or kernel panics. As of Mac OS X v10.5 Quartz 2D Extreme has been renamed to QuartzGL. However, it still remains disabled by default, as there are some situations where it can degrade performance, or experience visual glitches; it is a per-application setting which can be turned on if the developer wishes. Quartz Compositor is the compositing engine used by Quartz 2D and other renderers, such as OpenGL, Core Image, and QuickTime. In Mac OS X 10.2 and later, Quartz Compositor uses the processors (GPUs) on supported graphics cards to vastly improve composition performance. This technology is known as Quartz Extreme and is enabled automatically on systems with supported graphics cards.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Quartz (graphics layer)」の詳細全文を読む スポンサード リンク
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