Motion blur cursor download pdf#

Assignors: KERR, DUNCAN R., KING, NICHOLAS V. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.) Filing date Publication date Application filed by Apple Inc filed Critical Apple Inc Priority to US12/122,192 priority Critical patent/US20090284532A1/en Assigned to APPLE INC. Original Assignee Apple Inc Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.) King Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Abandoned Application number US12/122,192 Inventor Duncan R.

Motion blur cursor download pdf#

See the Graphics Hardware Capabilities and Emulation page for further details and a list of compliant hardware.- Google Patents US20090284532A1 - Cursor motion blurringДownload PDF Info Publication number US20090284532A1 US20090284532A1 US12/122,192 US12219208A US2009284532A1 US 20090284532 A1 US20090284532 A1 US 20090284532A1 US 12219208 A US12219208 A US 12219208A US 2009284532 A1 US2009284532 A1 US 2009284532A1 Authority US United States Prior art keywords cursor trail electronic positions curve Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. The opacity of the preceding frames are determined from this coefficient and time differences. Whilst this effect will work on all platforms, as it does not require Motion Vector or Depth texture support, it requires storing two history buffers (luma and chroma) of the last four frames which uses memory. The Multiple Frame Blending effect simply multiplies the previous four frames over the current frame, weighted towards the more recent frames. See the Graphics Hardware Capabilities and Emulation page for further details and a list of compliant hardware. The amount of sample points, which affects quality and performances. Larger values give longer exposure therefore a stronger blur effect. This buffer is then used to blur pixels based on the distance they have moved since the last frame was drawn. This effect approximates Motion Blur by storing the motion of pixels on screen in a Velocity buffer. It is the recommended technique for desktop and console platforms. However, as it requires Motion Vector support it is more expensive and not supported on some platforms.

Shutter Speed Simulation provides a more accurate representation of a cameraвЂ™s blur properties.

The Motion Blur techniques supplied in the post-processing stack are: Motion Blur is used to subtle effect in most types of games but exaggerated in some genres, such as racing games. This can be caused by rapidly moving objects or a long exposure time. Motion Blur is a common post-processing effect that simulates the blurring of an image when objects filmed by a camera are moving faster than the cameraвЂ™s exposure time. The effect descriptions on this page refer to the default effects found within the post-processing stack.