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Using QTPixelBufferContextCreate with NewMovieFromProperties
(HTML)
QA1443: Discusses using a QuickTime pixel buffer visual context and NewMovieFromProperties to output frames to pixel buffers.
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QuickTime |
2008-04-24
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QTKit Capture - Specifying Media Compression Settings
(HTML)
QA1586: Describes how to configure a file output object to save compressed captured media.
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Cocoa |
2008-03-11
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AGL Changes for Mac OS X Leopard (v. 10.5)
(HTML)
QA1523: This Q&A describes the new and deprecated APIs for Apple OpenGL (AGL)
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Carbon, Games, OpenGL |
2008-01-04
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How do I get the hexadecimal value of an NSColor object?
(HTML)
QA1576: Describes how to convert an NSColor object to its Hexadecimal value.
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Cocoa |
2007-12-19
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Requirements for Quartz GL
(HTML)
QA1536: Describes the requirements for enabling Quartz GL.
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Carbon, Cocoa, Games, Hardware, Performance, Quartz |
2007-12-12
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Compiling X11 / OpenGL applications on Mac OS X v.10.5 Leopard
(HTML)
QA1567: Trying to compile X11 / OpenGL application on Mac OS X v.10.5 result on "ld: cycle in dylib re-exports with /usr/X11R6/lib/libGL.dylib""
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OpenGL |
2007-10-30
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Why isn't my ColorSync CMM recognized on Mac OS X 10.5?
(HTML)
QA1557: Discusses how to upgrade your ColorSync CMM to run on Mac OS X 10.5
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ColorSync |
2007-10-26
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QuickTime Visual Context - Setting the kQTVisualContextOutputColorSpaceKey Attribute
(HTML)
QA1550: Describes how to configure a QuickTime OpenGL Texture Visual Context with the kQTVisualContextOutputColorSpaceKey attribute.
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QuickTime |
2007-09-28
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QuickTime Texture Visual Context - kQTVisualContextNotAllowedErr with non-accelerated graphics cards
(HTML)
QA1542: Discusses how to create a display mask and avoid a kQTVisualContextNotAllowedErr when using a non-accelerated graphics card.
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OpenGL, QuickTime |
2007-09-18
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How to measure CG text
(HTML)
QA1051: Explains how to measure Core Graphics text.
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Carbon, Cocoa, Printing, Quartz |
2007-08-02
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CGBitmapContextCreate Supported Color Spaces
(HTML)
QA1037: Lists the color space and alpha info combinations currently supported by CGBitmapContextCreate.
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Carbon, Cocoa, Games, Quartz |
2007-07-18
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Ensuring hardware accelerated rendering for your OpenGL application
(HTML)
QA1502: Using the NoRecovery pixel format attribute and how to check whether vertex and fragment processing is executed on the GPU or CPU
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Games, OpenGL |
2007-07-18
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Gathering all PostScript Printer Descriptions (PPDs)
(HTML)
QA1529: Describes a work around for an issue in PMCopyAvailablePPDs on Mac OS X 10.4 and below
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Printing |
2007-07-18
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Synchronizing OpenGL rendering updates to the vertical refresh of the display
(HTML)
QA1521: How to avoid tearing by synchronizing your rendering to the display VBL
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Games, OpenGL, Performance |
2007-07-16
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Using UTIs to Identify Image Files
(HTML)
QA1518: Explains how to use Uniform Type Identifiers to identify what files can be opened at images.
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Cocoa |
2007-05-11
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Availability of Quartz Composer Patches in Web Kit
(HTML)
QA1505: Details which Quartz Composer patches are available in Web Kit
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Carbon, Cocoa, Quartz |
2007-03-05
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Getting the pixel data from a CGImage object
(HTML)
QA1509: Describes how to access the pixel data of a CGImage object
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Quartz |
2007-03-05
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Core Video - Available Pixel Formats
(HTML)
QA1501: Discusses how to determine all the pixel format types and format descriptions known to Core Video.
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QuickTime |
2007-01-23
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Compression Sequence APIs - codecErr returned when compressing with H.264
(HTML)
QA1470: Describes why ICM Compression Sequence APIs cannot be used to encode to H.264
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QuickTime |
2006-11-15
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ColorSync Color Matching on Intel-based Macs
(HTML)
QA1464: Describes special considerations for byte ordering when performing ColorSync color matching on Intel-based Macs
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ColorSync |
2006-03-16
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The "packages" node in the device tree
(HTML)
HW90: Describes the "packages" node in the Open Firmware device tree.
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Hardware & Drivers |
2006-02-22
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Debugging Graphics with QuartzDebug
(HTML)
( )
QA1236: Explains how to use QuartzDebug to debug graphics issues.
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Quartz |
2006-01-12
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Decompression Sessions - Setting codec accuracy and field mode
(HTML)
QA1460: Describes how to set codec accuracy and field mode options when creating a decompression sessions.
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QuickTime |
2006-01-12
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Apple RGB and Generic RGB profiles explained
(HTML)
QA1430: Discusses use of the Apple RGB and Generic RGB profiles for untagged data on Mac OS X
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ColorSync |
2005-10-17
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Compression Sessions - Configuring codec quality settings
(HTML)
QA1444: Discusses how to set encoding quality for a Compression Sequence
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QuickTime |
2005-10-17
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Creating color spaces that ensure color matching.
(HTML)
QA1396: How to create color spaces that ensure color matching.
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ColorSync, Quartz |
2005-10-04
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Implementing a CVFillExtendedPixelsCallBack
(HTML)
QA1440: Discusses how you implement a Core Video custom extended pixel fill callback function.
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QuickTime |
2005-09-06
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Registering custom pixel formats with QuickTime and Core Video
(HTML)
QA1401: Discusses how to register custom pixel formats with QuickTime & Core Video with QuickTime 7.
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QuickTime |
2005-09-06
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Specifiying if the CPU or the GPU should be used for rendering.
(HTML)
QA1416: Which processor will be used for rendering in Core Image and how to affect it.
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Hardware & Drivers, Performance |
2005-08-16
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When does the RSS Feed patch in Quartz Composer refreshes its contents?
(HTML)
QA1425: Explains how the RSS Feed patch in Quartz Composer refreshes its contents.
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Quartz |
2005-06-24
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What is the Timebase submenu available in the contextual menu of some patches in Quartz Composer?
(HTML)
QA1427: Describes the timebase system used by patches in Quartz Composer.
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Quartz, Tools |
2005-06-15
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How can I optimize a Quartz Composer composition depending on the hardware it runs on?
(HTML)
QA1433: Explains how to design compositions that adapt to the hardware limitations.
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Cocoa, Performance, Quartz |
2005-06-01
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Why does my Quartz Composer composition render with a corrupted background in the QCView?
(HTML)
QA1434: Describes the circumstances in which the QCView background may render corrupted.
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Quartz |
2005-06-01
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Finding an NSView's current magnification.
(HTML)
QA1346: How to discover the current magnification (zoom level) of any NSView.
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Cocoa, Quartz |
2005-03-08
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Context Sharing Tips
(HTML)
()
QA1248: How to correctly share OpenGL contexts and what the limits on this sharing are.
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Carbon, Games, OpenGL |
2005-02-07
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NSOpenGLView redraw problems after a window is closed and re-opened.
(HTML)
QA1353: Workaround for NSOpenGLView failure to draw after its window is closed and re-opened.
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Cocoa, OpenGL |
2004-12-03
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Using Interface Builder's NSOpenGLView or Custom View objects for an OpenGL application
(HTML)
QA1167: Describes usage cases for both NSOpenGLViews and Custom Views for Cocoa OpenGL applications
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Cocoa, OpenGL |
2004-10-28
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glFlush() vs. glFinish()
(HTML)
QA1158: Explanation of the differences between glFlush() and glFinish()
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OpenGL |
2004-10-11
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How do I determine how much VRAM is available on my video card?
(HTML)
QA1168: Using Core Graphics and IOKit to find the physical size of VRAM on installed hardware.
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Cocoa, Games, OpenGL, Quartz |
2004-10-11
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NSTimers and Rendering Loops
(HTML)
QA1385: Using Cocoa timers (NSTimer) to drive a rendering loop
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Cocoa, OpenGL, Performance |
2004-10-04
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Setting the ColorSync profile for a NSBitmapImageRep object
(HTML)
QA1369: Setting the ColorSync profile for a NSBitmapImageRep object
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Cocoa, ColorSync |
2004-09-08
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Graphics Exporters - Creating 16-bit-per-channel image files
(HTML)
QA1354: Discusses how to use QuickTime Graphics Exporters to create 16-bit-per-channel image files.
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QuickTime |
2004-06-03
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Creating an OpenGL texture from an NSView
(HTML)
()
QA1325: Addresses the issues involved with using an NSView as the source data for an OpenGL texture.
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OpenGL |
2004-02-13
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OpenGL Driver Monitor Decoder Ring
(HTML)
()
QA1334: Describes what each of the parameters available in the OpenGL Driver Monitor measure.
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OpenGL |
2004-01-30
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Shearing a Coordinate Space with NSAffineTransform
(HTML)
()
QA1332: Describes a simple way to shear coordinate spaces by adding a few methods to the NSAffineTransform class.
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Cocoa, Quartz |
2004-01-29
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Sharpening Full Scene Anti-Aliasing Details
(HTML)
QA1268: Using full scene anti-aliasing (FSAA) in OpenGL applications.
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OpenGL |
2003-10-10
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Providing QuickDraw with a Known Good Port
(HTML)
()
Deprecated - QA1237: How to use SetPort( NULL) to provide QuickDraw with a known good port.
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Carbon |
2003-09-29
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CGImageRef contents are immutable
(HTML)
()
QA1276: Explains that CGImageRef contents are considered immutable once created.
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Carbon, Cocoa, Quartz |
2003-07-17
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Tioga PostScript Printing Plugins in Mac OS X 10.2
(HTML)
()
QA1085: Why Tioga printing plugins for PostScript printing aren't called on Mac OS X 10.2 and later.
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Printing |
2003-07-14
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Updating OpenGL Contexts
(HTML)
()
QA1209: When and why to update an OpenGL context in response to system and user actions.
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Carbon, Games, OpenGL |
2003-06-19
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Is ColorSync thread safe?
(HTML)
()
QA1261: Discusses ColorSync thread-safety issues.
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Carbon, Cocoa, ColorSync, Games, Hardware & Drivers, Performance, QuickTime |
2003-04-17
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How do I use PMSessionGetGraphicsContext to get a CGContextRef?
(HTML)
()
Deprecated - QA1216: Describes how to use PMSessionSetDocumentFormatGeneration and PMSessionGetGraphicsContext to get a CGContextRef for printing.
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Carbon, Printing |
2003-02-25
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Quartz 2D Thread Safety
(HTML)
()
QA1238: Explains the thread-safety issues for the Quartz 2D API.
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Carbon, Cocoa, Performance, Printing, Quartz |
2003-02-25
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Using Clip Region and Buffer Rectangles with OpenGL Carbon
(HTML)
()
QA1222: Shows the basics of using buffer rectangles and clip regions with AGL.
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Carbon, Games, OpenGL |
2002-12-19
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How do I tell if a particular display is being hardware accelerated by Quartz Extreme?
(HTML)
()
QA1218: Describes how to use CGDisplayUsesOpenGLAcceleration to see if a display is accelerated or not.
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Carbon, Cocoa, Games, OpenGL, Quartz |
2002-12-04
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How can I programmatically determine the DPI of the current video mode?
(HTML)
()
QA1217: Describes how to compute the DPI for a given display in a given mode using Core Graphics.
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Carbon, Cocoa, Games, Quartz |
2002-12-02
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GetProcAdress and OpenGL Entry Points
(HTML)
()
QA1188: Technique for finding function pointers for OpenGL entry points in Cocoa and Carbon
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Carbon, Games, OpenGL |
2002-11-25
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Problems recording CopyBits into a PICT on Mac OS X 10.2
(HTML)
()
QA1189: Identifies a problem with CopyBits and PICT on Mac OS X 10.2 and gives a simple workaround.
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Carbon |
2002-11-19
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QDSwapPort
(HTML)
()
QA1128: Explains when to use QDSwapPort.
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Carbon |
2002-11-06
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Using cmPathBased profile locations on Mac OS X
(HTML)
()
QA1203: Shows how to correctly specify cmPath-based profile locations on Mac OS X
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ColorSync |
2002-11-06
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Why does logging keep my Printer Module from working?
(HTML)
()
Deprecated - QA1182: Describes some problems with standard printf logging in a Printer Module on Jaguar.
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Printing |
2002-11-06
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Quartz 2D Interpolation
(HTML)
()
QA1186: Explains how to control Quartz 2D's image interpolation.
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Carbon, Cocoa, Printing, Quartz |
2002-10-29
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QuickDraw Text Anti-Aliasing using Quartz 2D
(HTML)
()
QA1193: Describes APIs added to Mac OS X to allow applications to draw QD text using CG anti-aliasing.
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Carbon |
2002-10-29
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Getting the name of a profile
(HTML)
()
QA1205: Shows how to programmatically get the name of a ColorSync profile.
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ColorSync |
2002-10-25
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Why don't all of my PDE localizations show up in all applications?
(HTML)
()
QA1185: Explains why some PDE localizations might not appear in all applications.
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Printing |
2002-10-16
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SCSIAction and IOSCSIUserClient on Mac OS X 10.2
(HTML)
()
QA1201: Describes migrating to a new API for SCSI Parallel devices starting with Mac OS X 10.2.
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Printing |
2002-09-13
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Preserving embedded ICC profiles when using QuickTime Graphics Importer/Exporters
(HTML)
()
QA1145: Shows how to preserve the embedded ICC profile when using the QuickTime Graphics Importer/Exporter routines
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Carbon |
2002-09-04
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Retain Counts of io_object_t Objects in IOKit.framework
(HTML)
()
QA1195: Distinguishes between the retain counts of an I/O Kit kernel object and its io_object_t user space proxy.
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Printing |
2002-09-04
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Disabling a Processor on a Multiprocessor System
(HTML)
()
QA1141: Describes how to disable a processor on a multiprocessor system for testing purposes.
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Performance |
2002-05-22
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ICC Profile copyright field
(HTML)
()
QA1136: Discusses how applications should honor the copyright field in the header of an ICC profile.
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ColorSync |
2002-04-08
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Current GDevice Dependencies
(HTML)
()
QA1115: Describes potential problems with creating windows or ports when the current GDevice isn't the main device.
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Carbon, Games |
2002-02-13
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IOKit Framework Headers
(HTML)
()
QA1107: Describes the differences between the headers in IOKit.framework and the I/O Kit headers in Kernel.framework.
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Hardware & Drivers |
2002-01-15
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CGContextClosePath
(HTML)
QA1046: Explains when you should call CGContextClosePath.
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Carbon, Cocoa, Printing, Quartz |
2001-10-02
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Saving the current Core Graphics Path
(HTML)
QA1056: Explains that the Core Graphics save and restore GState APIs do not affect the path.
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Carbon, Cocoa, Printing, Quartz |
2001-10-02
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Carbon Full Screen Conundrums
(HTML)
QA1068: Describes the available Mac OS X DrawSprocket services.
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Games |
2001-08-20
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CGContext Bounds
(HTML)
QA1048: Explains how to determine the bounds of a CGContext.
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Carbon, Printing, Quartz |
2001-07-02
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CGContextAddLineToPoint, CGContextAddCurveToPoint, et. al.
(HTML)
QA1049: Explains why the CGContextAddXYZ APIs don't draw anything immediately.
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Carbon, Cocoa, Printing, Quartz |
2001-07-02
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Drawing a Path Multiple Times
(HTML)
QA1047: Explains that path drawing operations consume the path.
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Carbon, Cocoa, Printing, Quartz |
2001-07-02
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Turning Off Core Graphics Clipping
(HTML)
QA1050: Explains how to clear the clipping path for a CGContext.
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Carbon, Cocoa, Printing, Quartz |
2001-07-02
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Unexpected CG state changes
(HTML)
QA1045: Explains why the Core Graphics drawing state sometimes changes for no apparent reason.
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Carbon, Cocoa, Printing, Quartz |
2001-07-02
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Improving ATSUI Text Drawing Performance
(HTML)
QA1027: Talks about one way of improving ATSUI text drawing performance.
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Typography |
2001-04-17
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How do I use QuickDraw with CGDirectDisplay?
(HTML)
QA1011: Explains how to draw to a CGDirectDisplay-captured display using QuickDraw.
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Carbon, Games, Quartz |
2001-04-11
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SyncCGContextOriginWithPort
(HTML)
QA1010: Describes how to use SyncCGContextOriginWithPort.
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Quartz |
2001-04-11
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Why are my Core Graphics calls drawing upside down?
(HTML)
QA1009: Explains why CoreGraphics drawing comes out upside down relative to QuickDraw drawing.
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Quartz |
2001-04-11
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Creating Sub GWorlds using QTNewGWorldFromPtr
(HTML)
QA1014: Using QTNewGWorldFromPtr to create sub GWorlds which reference the pixel data of other GWorlds.
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QuickTime |
2001-03-20
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Extracting DV Fields using QTNewGWorldFromPtr
(HTML)
QA1017: Describes using QTNewGWorldFromPtr to access individual fields contained within a frame of DV source.
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QuickTime |
2001-03-20
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LockPixels and DisposeGWorld with QTNewGWorldFromPtr
(HTML)
QA1007: Clarifies some issues surrounding pointer ownership when creating GWorlds with QTNewGWorldFromPtr
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Carbon, QuickTime |
2001-02-26
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CalcCMask and SeedCFill in Carbon
(HTML)
()
QD62: Explains how to use CalcCMask and SeedCFill in Carbon even though Carbon doesn't support OpenPort.
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Carbon |
2000-11-08
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GetPortBitMapForCopyBits
(HTML)
()
Deprecated - QD61: Describes the proper usage of GetPortBitMapForCopyBits.
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Carbon |
2000-11-08
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QDFlushPortBuffer
(HTML)
()
QD65: Describes a possible solution for window update problems under Carbon.
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Carbon, Games |
2000-11-08
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Legacy Devices
(HTML)
HW84: Discusses why legacy devices with hard-wired I/O addresses may not work properly with Open Firmware.
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Hardware & Drivers |
2000-03-20
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Is the Open Firmware device tree object oriented?
(HTML)
HW80: Discusses the object-oriented attributes of the Open Firmware device tree.
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Hardware & Drivers |
1999-11-15
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When to use PCMCIA, PC Card, and CardBus
(HTML)
HW77: Explains the differences between PCMCIA, PC Card, and CardBus.
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Hardware & Drivers |
1999-11-15
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Sample code for allocating an amount of dictionary space
(HTML)
HW71: Discusses the allocation and the setting of memory for Dictionary space in Open Firmware.
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Hardware & Drivers |
1999-10-11
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What is the "dump" word and how do I use it?
(HTML)
HW68: Describes the function of the Open Firmware word "dump" and how it can be used.
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Hardware & Drivers |
1999-10-11
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What numeric base is the default for the Open Firmware user interface?
(HTML)
HW65: Describes how the default numeric base used by the Open Firmware user interface is hexadecimal.
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Hardware & Drivers |
1999-10-11
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Missing ColorSync Profiles
(HTML)
()
CS13: Describes ColorSync profiles, focusing on the desc tag of the profile and the results of incorrect tags.
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ColorSync |
1999-05-03
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Determining Open Firmware configuration variables
(HTML)
()
HW56: Discusses how to determine the Open Firmware variables on a system.
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Hardware & Drivers |
1999-03-29
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Expansion ROM device properties
(HTML)
()
HW50: Describes the Open Firmware properties that should be included in a boot device's expansion ROM.
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Hardware & Drivers |
1999-03-29
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Why did the name of the PCI bridge change?
(HTML)
()
HW59: Explains the name change of the PCI bridge to the generic name "pci" in Open Firmware.
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Hardware & Drivers |
1999-03-29
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