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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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Games |
2002-12-02
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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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Games |
2004-10-11
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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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Games |
2002-12-04
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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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Games |
2001-04-11
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Is ColorSync thread safe?
(HTML)
()
QA1261: Discusses ColorSync thread-safety issues.
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Games |
2003-04-17
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QDFlushPortBuffer
(HTML)
()
QD65: Describes a possible solution for window update problems under Carbon.
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Games |
2000-11-08
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Requirements for Quartz GL
(HTML)
QA1536: Describes the requirements for enabling Quartz GL.
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Games |
2008-08-08
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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 |
2007-07-16
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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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Games |
2003-06-19
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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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Games |
2002-12-19
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Requirements for Quartz GL
(HTML)
QA1536: Describes the requirements for enabling Quartz GL.
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Hardware |
2008-08-08
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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
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Hardware & Drivers |
1999-02-15
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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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Is ColorSync thread safe?
(HTML)
()
QA1261: Discusses ColorSync thread-safety issues.
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Hardware & Drivers |
2003-04-17
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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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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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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 |
2005-08-16
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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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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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OpenGL |
2008-01-04
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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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Context Sharing Tips
(HTML)
()
QA1248: How to correctly share OpenGL contexts and what the limits on this sharing are.
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OpenGL |
2005-02-07
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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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Driving OpenGL Rendering Loops
(HTML)
QA1385: Using Core Video display links (CVDisplayLink) or Cocoa timers (NSTimer) to drive an OpenGL rendering loop
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OpenGL |
2009-05-01
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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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OpenGL |
2007-07-18
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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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OpenGL |
2002-11-25
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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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OpenGL |
2004-10-11
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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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OpenGL |
2002-12-04
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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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OpenGL |
2004-12-03
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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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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 |
2007-09-18
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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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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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OpenGL |
2007-07-16
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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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OpenGL |
2003-06-19
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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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OpenGL |
2002-12-19
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Using GLUT and OpenGL on Mac OS X
(HTML)
QA1613: States the required steps to add GLUT and OpenGL to an Xcode project.
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OpenGL |
2008-10-13
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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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OpenGL |
2004-10-28
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Disabling Processor Cores on a Multi-Core System
(HTML)
()
QA1141: Describes how to disable processor cores on a multi-core system for testing purposes.
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Performance |
2008-09-16
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Driving OpenGL Rendering Loops
(HTML)
QA1385: Using Core Video display links (CVDisplayLink) or Cocoa timers (NSTimer) to drive an OpenGL rendering loop
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Performance |
2009-05-01
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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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Performance |
2005-06-01
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Is ColorSync thread safe?
(HTML)
()
QA1261: Discusses ColorSync thread-safety issues.
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Performance |
2003-04-17
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Quartz 2D Thread Safety
(HTML)
()
QA1238: Explains the thread-safety issues for the Quartz 2D API.
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Performance |
2003-02-25
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Requirements for Quartz GL
(HTML)
QA1536: Describes the requirements for enabling Quartz GL.
|
Performance |
2008-08-08
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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.
|
Performance |
2005-08-16
|
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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
|
Performance |
2007-07-16
|
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CGContext Bounds
(HTML)
QA1048: Explains how to determine the bounds of a CGContext.
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Printing |
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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Printing |
2001-07-02
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CGContextClosePath
(HTML)
QA1046: Explains when you should call CGContextClosePath.
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Printing |
2001-10-02
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Drawing a Path Multiple Times
(HTML)
QA1047: Explains that path drawing operations consume the path.
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Printing |
2001-07-02
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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 |
2008-08-08
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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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Printing |
2003-02-25
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How to measure CG text
(HTML)
QA1051: Explains how to measure Core Graphics text.
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Printing |
2007-08-02
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Quartz 2D Interpolation
(HTML)
()
QA1186: Explains how to control Quartz 2D's image interpolation.
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Printing |
2002-10-29
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Quartz 2D Thread Safety
(HTML)
()
QA1238: Explains the thread-safety issues for the Quartz 2D API.
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Printing |
2003-02-25
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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 |
2008-09-24
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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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Printing |
2001-10-02
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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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Turning Off Core Graphics Clipping
(HTML)
QA1050: Explains how to clear the clipping path for a CGContext.
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Printing |
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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Printing |
2001-07-02
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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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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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Animating the frame of a CALayer.
(HTML)
QA1620: Explains how the frame property of a layer interacts with animations.
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Quartz |
2008-10-24
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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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Quartz |
2007-03-05
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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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Quartz |
2007-07-18
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CGContext Bounds
(HTML)
QA1048: Explains how to determine the bounds of a CGContext.
|
Quartz |
2001-07-02
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CGContextAddLineToPoint, CGContextAddCurveToPoint, et. al.
(HTML)
QA1049: Explains why the CGContextAddXYZ APIs don't draw anything immediately.
|
Quartz |
2001-07-02
|
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CGContextClosePath
(HTML)
QA1046: Explains when you should call CGContextClosePath.
|
Quartz |
2001-10-02
|
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CGImageRef contents are immutable
(HTML)
()
QA1276: Explains that CGImageRef contents are considered immutable once created.
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Quartz |
2003-07-17
|
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Core Animation properties and Reference Counting
(HTML)
QA1565: Describes a discrepancy between the property declarations in Core Animation and the actual behavior.
|
Quartz |
2008-11-24
|
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Creating color spaces that ensure color matching.
(HTML)
QA1396: How to create color spaces that ensure color matching.
|
Quartz |
2005-10-04
|
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Debugging Graphics with QuartzDebug
(HTML)
()
QA1236: Explains how to use QuartzDebug to debug graphics issues.
|
Quartz |
2006-01-12
|
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Drawing a Path Multiple Times
(HTML)
QA1047: Explains that path drawing operations consume the path.
|
Quartz |
2001-07-02
|
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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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Quartz |
2005-03-08
|
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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
|
Quartz |
2008-08-27
|
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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.
|
Quartz |
2005-06-01
|
|
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.
|
Quartz |
2002-12-02
|
|
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.
|
Quartz |
2004-10-11
|
|
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.
|
Quartz |
2002-12-04
|
|
How do I use QuickDraw with CGDirectDisplay?
(HTML)
QA1011: Explains how to draw to a CGDirectDisplay-captured display using QuickDraw.
|
Quartz |
2001-04-11
|
|
How to measure CG text
(HTML)
QA1051: Explains how to measure Core Graphics text.
|
Quartz |
2007-08-02
|
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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
|
|
Quartz 2D Interpolation
(HTML)
()
QA1186: Explains how to control Quartz 2D's image interpolation.
|
Quartz |
2002-10-29
|
|
Quartz 2D Thread Safety
(HTML)
()
QA1238: Explains the thread-safety issues for the Quartz 2D API.
|
Quartz |
2003-02-25
|
|
Requirements for Quartz GL
(HTML)
QA1536: Describes the requirements for enabling Quartz GL.
|
Quartz |
2008-08-08
|
|
Saving the current Core Graphics Path
(HTML)
QA1056: Explains that the Core Graphics save and restore GState APIs do not affect the path.
|
Quartz |
2001-10-02
|
|
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.
|
Quartz |
2004-01-29
|
|
SyncCGContextOriginWithPort
(HTML)
QA1010: Describes how to use SyncCGContextOriginWithPort.
|
Quartz |
2001-04-11
|
|
Turning Off Core Graphics Clipping
(HTML)
QA1050: Explains how to clear the clipping path for a CGContext.
|
Quartz |
2001-07-02
|
|
Unexpected CG state changes
(HTML)
QA1045: Explains why the Core Graphics drawing state sometimes changes for no apparent reason.
|
Quartz |
2001-07-02
|
|
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 |
2005-06-15
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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.
|
Quartz |
2005-06-24
|
|
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
|
|
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
|
|
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
|
|
Compression Sessions - Configuring codec quality settings
(HTML)
QA1444: Discusses how to set encoding quality for a Compression Sequence
|
QuickTime |
2005-10-17
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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.
|
QuickTime |
2007-01-23
|
|
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
|
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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.
|
QuickTime |
2006-01-12
|
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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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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
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Implementing a CVFillExtendedPixelsCallBack
(HTML)
QA1440: Discusses how you implement a Core Video custom extended pixel fill callback function.
|
QuickTime |
2005-09-06
|
|
Is ColorSync thread safe?
(HTML)
()
QA1261: Discusses ColorSync thread-safety issues.
|
QuickTime |
2003-04-17
|
|
LockPixels and DisposeGWorld with QTNewGWorldFromPtr
(HTML)
QA1007: Clarifies some issues surrounding pointer ownership when creating GWorlds with QTNewGWorldFromPtr
|
QuickTime |
2001-02-26
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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.
|
QuickTime |
2007-09-18
|
|
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
|
|
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
|
|
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
|
|
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.
|
Tools |
2005-06-15
|
|
Improving ATSUI Text Drawing Performance
(HTML)
QA1027: Talks about one way of improving ATSUI text drawing performance.
|
Typography |
2001-04-17
|
