Sort by
Title |
Sort by
Topic |
Sorted by
Date |
|
Driving OpenGL Rendering Loops
(HTML)
QA1385: Using Core Video display links (CVDisplayLink) or Cocoa timers (NSTimer) to drive an OpenGL rendering loop
|
Cocoa, OpenGL, Performance |
2009-05-01
|
|
Core Animation properties and Reference Counting
(HTML)
QA1565: Describes a discrepancy between the property declarations in Core Animation and the actual behavior.
|
Cocoa, Games, Quartz |
2008-11-24
|
|
Animating the frame of a CALayer.
(HTML)
QA1620: Explains how the frame property of a layer interacts with animations.
|
Cocoa, Quartz |
2008-10-24
|
|
Using GLUT and OpenGL on Mac OS X
(HTML)
QA1613: States the required steps to add GLUT and OpenGL to an Xcode project.
|
OpenGL |
2008-10-13
|
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.
|
Printing |
2008-09-24
|
|
Disabling Processor Cores on a Multi-Core System
(HTML)
()
QA1141: Describes how to disable processor cores on a multi-core system for testing purposes.
|
Performance |
2008-09-16
|
|
Multithreaded usage of the QCRenderer
(HTML)
QA1538: Describes an issue that may arise when using the QCRenderer in a multi-threaded application.
|
Quartz |
2008-09-08
|
|
Getting the pixel data from a CGImage object
(HTML)
QA1509: Describes how to access the pixel data of a CGImage object
|
Carbon, Cocoa, Games, Quartz |
2008-08-27
|
|
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
|
Printing |
2008-08-08
|
|
Requirements for Quartz GL
(HTML)
QA1536: Describes the requirements for enabling Quartz GL.
|
Carbon, Cocoa, Games, Hardware, Performance, Quartz |
2008-08-08
|
|
Using QTPixelBufferContextCreate with NewMovieFromProperties
(HTML)
QA1443: Discusses using a QuickTime pixel buffer visual context and NewMovieFromProperties to output frames to pixel buffers.
|
QuickTime |
2008-08-08
|
|
QTKit Capture - Specifying Media Compression Settings
(HTML)
QA1586: Describes how to configure a file output object to save compressed captured media.
|
Cocoa |
2008-03-11
|
|
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)
|
Carbon, Games, OpenGL |
2008-01-04
|
|
How do I get the hexadecimal value of an NSColor object?
(HTML)
QA1576: Describes how to convert an NSColor object to its Hexadecimal value.
|
Cocoa |
2007-12-19
|
|
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""
|
OpenGL |
2007-10-30
|
|
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
|
ColorSync |
2007-10-26
|
|
QuickTime Visual Context - Setting the kQTVisualContextOutputColorSpaceKey Attribute
(HTML)
QA1550: Describes how to configure a QuickTime OpenGL Texture Visual Context with the kQTVisualContextOutputColorSpaceKey attribute.
|
QuickTime |
2007-09-28
|
|
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.
|
OpenGL, QuickTime |
2007-09-18
|
|
How to measure CG text
(HTML)
QA1051: Explains how to measure Core Graphics text.
|
Carbon, Cocoa, Printing, Quartz |
2007-08-02
|
|
CGBitmapContextCreate Supported Color Spaces
(HTML)
QA1037: Lists the color space and alpha info combinations currently supported by CGBitmapContextCreate.
|
Carbon, Cocoa, Games, Quartz |
2007-07-18
|
|
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
|
Games, OpenGL |
2007-07-18
|
|
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
|
Games, OpenGL, Performance |
2007-07-16
|
|
Using UTIs to Identify Image Files
(HTML)
QA1518: Explains how to use Uniform Type Identifiers to identify what files can be opened at images.
|
Cocoa |
2007-05-11
|
|
Availability of Quartz Composer Patches in Web Kit
(HTML)
QA1505: Details which Quartz Composer patches are available in Web Kit
|
Carbon, Cocoa, Quartz |
2007-03-05
|
|
Core Video - Available Pixel Formats
(HTML)
QA1501: Discusses how to determine all the pixel format types and format descriptions known to Core Video.
|
QuickTime |
2007-01-23
|
|
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
|
QuickTime |
2006-11-15
|
|
ColorSync Color Matching on Intel-based Macs
(HTML)
QA1464: Describes special considerations for byte ordering when performing ColorSync color matching on Intel-based Macs
|
ColorSync |
2006-03-16
|
|
The "packages" node in the device tree
(HTML)
HW90: Describes the "packages" node in the Open Firmware device tree.
|
Hardware & Drivers |
2006-02-22
|
|
Debugging Graphics with QuartzDebug
(HTML)
()
QA1236: Explains how to use QuartzDebug to debug graphics issues.
|
Quartz |
2006-01-12
|
|
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.
|
QuickTime |
2006-01-12
|
|
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
|
ColorSync |
2005-10-17
|
|
Compression Sessions - Configuring codec quality settings
(HTML)
QA1444: Discusses how to set encoding quality for a Compression Sequence
|
QuickTime |
2005-10-17
|
|
Creating color spaces that ensure color matching.
(HTML)
QA1396: How to create color spaces that ensure color matching.
|
ColorSync, Quartz |
2005-10-04
|
|
Implementing a CVFillExtendedPixelsCallBack
(HTML)
QA1440: Discusses how you implement a Core Video custom extended pixel fill callback function.
|
QuickTime |
2005-09-06
|
|
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.
|
QuickTime |
2005-09-06
|
|
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.
|
Hardware & Drivers, Performance |
2005-08-16
|
|
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.
|
Quartz |
2005-06-24
|
|
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.
|
Quartz, Tools |
2005-06-15
|
|
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.
|
Cocoa, Performance, Quartz |
2005-06-01
|
|
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.
|
Quartz |
2005-06-01
|
|
Finding an NSView's current magnification.
(HTML)
QA1346: How to discover the current magnification (zoom level) of any NSView.
|
Cocoa, Quartz |
2005-03-08
|
|
Context Sharing Tips
(HTML)
()
QA1248: How to correctly share OpenGL contexts and what the limits on this sharing are.
|
Carbon, Games, OpenGL |
2005-02-07
|
|
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.
|
Cocoa, OpenGL |
2004-12-03
|
|
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
|
Cocoa, OpenGL |
2004-10-28
|
|
glFlush() vs. glFinish()
(HTML)
QA1158: Explanation of the differences between glFlush() and glFinish()
|
OpenGL |
2004-10-11
|
|
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.
|
Cocoa, Games, OpenGL, Quartz |
2004-10-11
|
|
Setting the ColorSync profile for a NSBitmapImageRep object
(HTML)
QA1369: Setting the ColorSync profile for a NSBitmapImageRep object
|
Cocoa, ColorSync |
2004-09-08
|
|
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.
|
QuickTime |
2004-06-03
|
|
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.
|
OpenGL |
2004-02-13
|
|
OpenGL Driver Monitor Decoder Ring
(HTML)
()
QA1334: Describes what each of the parameters available in the OpenGL Driver Monitor measure.
|
OpenGL |
2004-01-30
|
|
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.
|
Cocoa, Quartz |
2004-01-29
|
|
Sharpening Full Scene Anti-Aliasing Details
(HTML)
QA1268: Using full scene anti-aliasing (FSAA) in OpenGL applications.
|
OpenGL |
2003-10-10
|
|
Providing QuickDraw with a Known Good Port
(HTML)
()
Deprecated - QA1237: How to use SetPort( NULL) to provide QuickDraw with a known good port.
|
Carbon |
2003-09-29
|
|
CGImageRef contents are immutable
(HTML)
()
QA1276: Explains that CGImageRef contents are considered immutable once created.
|
Carbon, Cocoa, Quartz |
2003-07-17
|
|
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.
|
Printing |
2003-07-14
|
|
Updating OpenGL Contexts
(HTML)
()
QA1209: When and why to update an OpenGL context in response to system and user actions.
|
Carbon, Games, OpenGL |
2003-06-19
|
|
Is ColorSync thread safe?
(HTML)
()
QA1261: Discusses ColorSync thread-safety issues.
|
Carbon, Cocoa, ColorSync, Games, Hardware & Drivers, Performance, QuickTime |
2003-04-17
|
|
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.
|
Carbon, Printing |
2003-02-25
|
|
Quartz 2D Thread Safety
(HTML)
()
QA1238: Explains the thread-safety issues for the Quartz 2D API.
|
Carbon, Cocoa, Performance, Printing, Quartz |
2003-02-25
|
|
Using Clip Region and Buffer Rectangles with OpenGL Carbon
(HTML)
()
QA1222: Shows the basics of using buffer rectangles and clip regions with AGL.
|
Carbon, Games, OpenGL |
2002-12-19
|
|
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.
|
Carbon, Cocoa, Games, OpenGL, Quartz |
2002-12-04
|
|
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.
|
Carbon, Cocoa, Games, Quartz |
2002-12-02
|
|
GetProcAdress and OpenGL Entry Points
(HTML)
()
QA1188: Technique for finding function pointers for OpenGL entry points in Cocoa and Carbon
|
Carbon, Games, OpenGL |
2002-11-25
|
|
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.
|
Carbon |
2002-11-19
|
|
QDSwapPort
(HTML)
()
QA1128: Explains when to use QDSwapPort.
|
Carbon |
2002-11-06
|
|
Using cmPathBased profile locations on Mac OS X
(HTML)
()
QA1203: Shows how to correctly specify cmPath-based profile locations on Mac OS X
|
ColorSync |
2002-11-06
|
|
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.
|
Printing |
2002-11-06
|
|
Quartz 2D Interpolation
(HTML)
()
QA1186: Explains how to control Quartz 2D's image interpolation.
|
Carbon, Cocoa, Printing, Quartz |
2002-10-29
|
|
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.
|
Carbon |
2002-10-29
|
|
Getting the name of a profile
(HTML)
()
QA1205: Shows how to programmatically get the name of a ColorSync profile.
|
ColorSync |
2002-10-25
|
|
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.
|
Printing |
2002-10-16
|
|
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
|
Carbon |
2002-09-04
|
|
ICC Profile copyright field
(HTML)
()
QA1136: Discusses how applications should honor the copyright field in the header of an ICC profile.
|
ColorSync |
2002-04-08
|
|
Current GDevice Dependencies
(HTML)
()
QA1115: Describes potential problems with creating windows or ports when the current GDevice isn't the main device.
|
Carbon, Games |
2002-02-13
|
|
IOKit Framework Headers
(HTML)
()
QA1107: Describes the differences between the headers in IOKit.framework and the I/O Kit headers in Kernel.framework.
|
Hardware & Drivers |
2002-01-15
|
|
CGContextClosePath
(HTML)
QA1046: Explains when you should call CGContextClosePath.
|
Carbon, Cocoa, Printing, Quartz |
2001-10-02
|
|
Saving the current Core Graphics Path
(HTML)
QA1056: Explains that the Core Graphics save and restore GState APIs do not affect the path.
|
Carbon, Cocoa, Printing, Quartz |
2001-10-02
|
|
Carbon Full Screen Conundrums
(HTML)
QA1068: Describes the available Mac OS X DrawSprocket services.
|
Games |
2001-08-20
|
|
CGContext Bounds
(HTML)
QA1048: Explains how to determine the bounds of a CGContext.
|
Carbon, Printing, Quartz |
2001-07-02
|
|
CGContextAddLineToPoint, CGContextAddCurveToPoint, et. al.
(HTML)
QA1049: Explains why the CGContextAddXYZ APIs don't draw anything immediately.
|
Carbon, Cocoa, Printing, Quartz |
2001-07-02
|
|
Drawing a Path Multiple Times
(HTML)
QA1047: Explains that path drawing operations consume the path.
|
Carbon, Cocoa, Printing, Quartz |
2001-07-02
|
|
Turning Off Core Graphics Clipping
(HTML)
QA1050: Explains how to clear the clipping path for a CGContext.
|
Carbon, Cocoa, Printing, Quartz |
2001-07-02
|
|
Unexpected CG state changes
(HTML)
QA1045: Explains why the Core Graphics drawing state sometimes changes for no apparent reason.
|
Carbon, Cocoa, Printing, Quartz |
2001-07-02
|
|
Improving ATSUI Text Drawing Performance
(HTML)
QA1027: Talks about one way of improving ATSUI text drawing performance.
|
Typography |
2001-04-17
|
|
How do I use QuickDraw with CGDirectDisplay?
(HTML)
QA1011: Explains how to draw to a CGDirectDisplay-captured display using QuickDraw.
|
Carbon, Games, Quartz |
2001-04-11
|
|
SyncCGContextOriginWithPort
(HTML)
QA1010: Describes how to use SyncCGContextOriginWithPort.
|
Quartz |
2001-04-11
|
|
Why are my Core Graphics calls drawing upside down?
(HTML)
QA1009: Explains why CoreGraphics drawing comes out upside down relative to QuickDraw drawing.
|
Quartz |
2001-04-11
|
|
Creating Sub GWorlds using QTNewGWorldFromPtr
(HTML)
QA1014: Using QTNewGWorldFromPtr to create sub GWorlds which reference the pixel data of other GWorlds.
|
QuickTime |
2001-03-20
|
|
Extracting DV Fields using QTNewGWorldFromPtr
(HTML)
QA1017: Describes using QTNewGWorldFromPtr to access individual fields contained within a frame of DV source.
|
QuickTime |
2001-03-20
|
|
LockPixels and DisposeGWorld with QTNewGWorldFromPtr
(HTML)
QA1007: Clarifies some issues surrounding pointer ownership when creating GWorlds with QTNewGWorldFromPtr
|
Carbon, QuickTime |
2001-02-26
|
|
CalcCMask and SeedCFill in Carbon
(HTML)
()
QD62: Explains how to use CalcCMask and SeedCFill in Carbon even though Carbon doesn't support OpenPort.
|
Carbon |
2000-11-08
|
|
GetPortBitMapForCopyBits
(HTML)
()
Deprecated - QD61: Describes the proper usage of GetPortBitMapForCopyBits.
|
Carbon |
2000-11-08
|
|
QDFlushPortBuffer
(HTML)
()
QD65: Describes a possible solution for window update problems under Carbon.
|
Carbon, Games |
2000-11-08
|
|
Legacy Devices
(HTML)
HW84: Discusses why legacy devices with hard-wired I/O addresses may not work properly with Open Firmware.
|
Hardware & Drivers |
2000-03-20
|
|
When to use PCMCIA, PC Card, and CardBus
(HTML)
HW77: Explains the differences between PCMCIA, PC Card, and CardBus.
|
Hardware & Drivers |
1999-11-15
|
|
Missing ColorSync Profiles
(HTML)
()
CS13: Describes ColorSync profiles, focusing on the desc tag of the profile and the results of incorrect tags.
|
ColorSync |
1999-05-03
|
|
Difference between using Restart or Shut Down in the Finder's Special menu in Open Firmware
(HTML)
()
HW47: Explains the differences between using Restart or Shut Down on Open Firmware
|
Hardware & Drivers |
1999-02-15
|
|
Parsing the PICT File Format
(HTML)
()
Deprecated - QD56: Explains where to find information on the PICT file format and warns against parsing a PICT file.
|
Carbon |
1998-02-10
|
|
Creating Gray Scaled Images > 8 bits
(HTML)
()
Deprecated - QD51: Shows how to create gray-scaled images at resolutions greater than 8 bits for display.
|
Carbon |
1997-11-17
|
|
Embedding ICC Profiles
(HTML)
()
CS06: Gives downloads for documents describing embedding ICC profiles in EPS, PICT, and TIFF files.
|
ColorSync |
1996-02-09
|
|
Successful Call to NCWNewColorWorld
(HTML)
()
CS08: Explains the return value of NCWNewColorWorld and the CMWorldRef parameter as a valid return value when successful.
|
ColorSync |
1996-02-09
|
|
Using Embedded EPS Profiles
(HTML)
()
CS09: Gives source on embedding ColorSync profiles in EPS as well as PICT and TIFF formats.
|
ColorSync |
1996-02-09
|
|
Using qd and QDGlobals
(HTML)
()
Deprecated - QD40: Why a sample program compiled with SC may give the link error: undefined entry qd. Provides a solution.
|
Carbon |
1996-02-09
|
|
Using Temporary Memory with OpenPicture
(HTML)
Deprecated - QD20: Provides several techniques of causing OpenPicture to allocate temporary memory for a picture handle.
|
Carbon |
1996-02-01
|
|
Converting RGB Colors to a Palette Index
(HTML)
Deprecated - QD21: Explains how to convert RGB colors into the palette index created by an application.
|
Carbon |
1995-09-15
|
|
Error -151 and NewGWorld
(HTML)
Deprecated - QD18: Explains what the error code -151 means when in NewGWorld.
|
Carbon |
1995-09-15
|
|
Incorrect Inside Macintosh Volume V documentation
(HTML)
Deprecated - QD15: Identifies incorrect documentation in Inside Macintosh Volume V regarding the formats of PnPixPat and BkPixPat opcodes.
|
Carbon |
1995-09-15
|
|
Problem Getting PICTS to Display in Correct Colors
(HTML)
Deprecated - QD24: Using a custom color table to get PICTs to display with the right colors in an offscreen GWorld.
|
Carbon |
1995-09-15
|
|
Problem with PaintRgn on 256-color Screens
(HTML)
Deprecated - QD23: PaintRgn with RGBForeColor and transfer mode addOver doesn't return color to original on 256-color-screens.
|
Carbon |
1995-09-15
|
|
Problems Creating a Mask for a Picture
(HTML)
Deprecated - QD27: Demonstrates creating a mask where the mask is 0 for pure white pixels and 1 everywhere else.
|
Carbon |
1995-09-15
|
|
Spooling in or out of CompressPicture or CompressImage
(HTML)
Deprecated - QD17: Recommends alternatives to spooling the results of CompressPicture or CompressImage to or from disk.
|
Carbon |
1995-09-15
|
|
Window Manager and EraseRect
(HTML)
Deprecated - QD26: Why WindowManager causes a flicker using EraseRect and provides a solution for this problem.
|
Carbon |
1995-09-15
|
|
Special Profile Sizes in ColorSync Manager
(HTML)
CS03: Answers several questions on special profile sizes in ColorSync Manager and other efficiency issues.
|
ColorSync |
1995-05-01
|
