WO2006007251A2 - Display updates in a windowing system using a programmable graphics processing unit. - Google Patents
Display updates in a windowing system using a programmable graphics processing unit. Download PDFInfo
- Publication number
- WO2006007251A2 WO2006007251A2 PCT/US2005/019108 US2005019108W WO2006007251A2 WO 2006007251 A2 WO2006007251 A2 WO 2006007251A2 US 2005019108 W US2005019108 W US 2005019108W WO 2006007251 A2 WO2006007251 A2 WO 2006007251A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- buffer
- effects
- location
- display layer
- act
- Prior art date
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Classifications
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/36—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators characterised by the display of a graphic pattern, e.g. using an all-points-addressable [APA] memory
- G09G5/39—Control of the bit-mapped memory
- G09G5/393—Arrangements for updating the contents of the bit-mapped memory
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/14—Display of multiple viewports
Definitions
- each application e.g., applications 105 and 110
- each application has associated with it one or
- window buffers or backing stores e.g., buffers 115 and 120 - only one for
- Apps produce a visual effect (e.g., blurring or
- compositor 125 combines each application's backing store (in a
- compositor 125 As indicated in FIG. 1, compositor 125
- CPU system central processing unit
- One method in accordance with the invention includes:
- an output region associated with a top-most display layer e.g., an
- each of the one or more filters is associated with a display layer and has an
- a buffer e.g., an assembly buffer having a size
- the acts of identifying, determining and establishing are
- Figure 1 shows a prior art buffered window computer system.
- Figure 2 shows a buffered window computer system in accordance
- Figures 3A and 3B show a below-effect in accordance with one
- Figures 4A and 4B show an on-effect in accordance with one
- Figures 5A and 5B show an on-effect in accordance with another
- Figures 6A and 6B show an above-effect in accordance with one
- Figures 7k and 7B show a full-screen effect in accordance with one
- Figure 8 shows, in block diagram form, a display whose visual
- Figure 9 shows, in flowchart form, an event processing technique in
- Figure 10 shows a system in which a partial display update in
- Figure 11 shows, in flowchart format, a partial display update
- Figure 12 shows an illustrative system in accordance with the invention
- buffered window system is interrogated to determine which regions within each
- backing stores only one of which is shown for clarity and convenience (e.g., buffers
- Compositor 225 one component in an OS-level “window server"
- GPU processing unit
- frame buffer 245 which is then used to drive display unit 250.
- compositer 225/GPU 230 may also manipulate a data stream as it
- fragment program is a collection of program
- on-effects visual effects are applied to a target window as it is being
- full- screen effects/' visual effects are applied to the system's assembly buffer as it is
- target window (e.g., contained in backing store 220) are filtered before the target
- GPU 230 (block 305 in FIG. 3A and (1) in FIG. 3B). GPU 230 then filters the
- target window to determine the region that is to be filtered.
- on-effect 400 in accordance with one
- a target window e.g., a target window
- backing store 220 contains a system's assembly buffer. As shown, the contents of window buffer 220 are filtered by GPU
- a target window e.g., contained in backing
- the invention include, but are not limited to, window distortions and color correction
- effects such as grey-scale and sepia tone effects.
- window (e.g., contained in backing store 220) is composited into the system's
- the target window may be affected by the visual effect. As shown, the
- target window is first composited into assembly buffer 235 by GPU 230 (block 605
- assembly buffer is filtered as it is transferred to the system's frame buffer.
- assembly buffer 235 the contents of assembly buffer 235 are filtered by GPU 230 (block 705 in
- programmable GPU 230 is used to apply the visual
- LCDs liquid crystal displays
- effects in accordance with 700 include those effects in which GPU 230 generates
- application 210 may write into window buffer 220 such that
- window 800 includes button 805 at a particular location. After being modified in
- display 250 may be any one or more of effects 300, 400, 600 and 700.
- button 805 modified to display as 810. Accordingly, if a user (the
- buttons 810 the system (i.e., the operating
- fragment programs implementing a desired visual effect operate by calculating a
- destination pixel location i.e., x d , y d ) based on one or more source pixels.
- the filters used to generate the effects may also be used to determine
- event routing 900 in
- the last applied filter is used to determine a first tentative
- Processing loop 915-920 is repeated for each filter applied to clicked location (x cUck ,
- windowing subsystem identified by the windowing subsystem as needed to be updated (e.g., because a
- each layer overlapping region 1030 e.g., regions 1035, 1040 and
- a specified top-layer region comprising (a x b) pixels may, because of that layer's associated filter,
- magnification type filter pixels from the layer below it.
- the top-most layer by the windowing subsystem as needing to be updated may not
- assembly buffer extent size and location
- Illustrative output display filters include below, on and above filters as
- the filter's region of interest (“ROI") is used to determine the size of the ROI
- a filter's ROI is the input region needed to generate a specified output region. For example, if the output
- region identified in accordance with block 1110 comprises a region (a x b) pixels
- the filter's ROI identifies a region (x x y) pixels, then the identified (x x y) pixel
- extent of the AB is then updated to be equal to the combination (via the set union
- acts in accordance with blocks 1150 and 1155 may be performed by one or more
- ROI extent is shown as 1235, (ii) layer L3 1220 has a filter whose ROI extent is
- layer L2 1225 has a filter whose ROI extent is shown as 1255,
- layer Ll 1210 has a filter whose ROI extent is shown as 1265.
- region 1230 is used to establish an
- region 1240 in layer L3 1220 is also recorded.
- layer L4 1225 uses region 1240 from layer L3 1220 to compute or calculate its
- AB extent is adjusted to include region 1240.
- a similar process is used to identify
- L3 1220 does not perturb the extent/size of the needed assembly buffer. This may
- the filter is the NULL filter (i.e., no applied filter) or because the filter
- pixels from layer L2 1215 does not require more, or fewer, pixels from layer L2 1215 (e.g., a color correction
- region 1260 is smaller than region 1250 and so the size (extent) of the AB is
- region 1270 is determined based on layer Li's filter ROI
- region 1270 covers some portion of background layer LO 1205 not yet
- size and location (extent) 1275 represents the union of the regions identified for
- region 1230 may then be transferred into display 1200's frame buffer (at a
- the invention may incorporate substantially any known visual effects. These include
- regions identified in accordance with block 1125 need not overlap. That is, regions
- identified in accordance with the process of FIG. 11 may be disjoint or discontinuous. In such a case, the union of disjoint regions is simply the individual
- regions may be done in any suitable manner. For example, regions may be recorded
- FIGS. 3A, 4A, 6A, 7A and 9 may be performed by two or more cooperatively coupled
- GPUs may, further, receive input from one or more system processing units
- optical media such as CD-ROMs and digital video disks (“DVDs"); and
- EPROM Electrically Erasable Programmable Read-Only Memory
- EEPROM Electrically erasable read-only memory
- EEPROM Electrically erasable read-only memory
- Flash devices Programmable Gate Arrays and flash devices.
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Image Processing (AREA)
- Controls And Circuits For Display Device (AREA)
- Image Generation (AREA)
- Digital Computer Display Output (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2005262676A AU2005262676B2 (en) | 2004-06-25 | 2005-06-01 | Display updates in a windowing system using a programmable graphics processing unit. |
EP05755126.9A EP1759381B1 (en) | 2004-06-25 | 2005-06-01 | Display updates in a windowing system using a programmable graphics processing unit |
CA2558013A CA2558013C (en) | 2004-06-25 | 2005-06-01 | Display updates in a windowing system using a programmable graphics processing unit. |
AU2008207617A AU2008207617B2 (en) | 2004-06-25 | 2008-08-29 | Display updates in a windowing system using a programmable graphics processing unit |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/877,358 US20050285866A1 (en) | 2004-06-25 | 2004-06-25 | Display-wide visual effects for a windowing system using a programmable graphics processing unit |
US10/877,358 | 2004-06-25 | ||
US10/957,557 | 2004-10-01 | ||
US10/957,557 US7652678B2 (en) | 2004-06-25 | 2004-10-01 | Partial display updates in a windowing system using a programmable graphics processing unit |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2006007251A2 true WO2006007251A2 (en) | 2006-01-19 |
WO2006007251A3 WO2006007251A3 (en) | 2006-06-01 |
Family
ID=34971412
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2005/019108 WO2006007251A2 (en) | 2004-06-25 | 2005-06-01 | Display updates in a windowing system using a programmable graphics processing unit. |
Country Status (5)
Country | Link |
---|---|
US (4) | US7652678B2 (en) |
EP (1) | EP1759381B1 (en) |
AU (2) | AU2005262676B2 (en) |
CA (2) | CA2765087C (en) |
WO (1) | WO2006007251A2 (en) |
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- 2005-06-01 EP EP05755126.9A patent/EP1759381B1/en not_active Not-in-force
- 2005-06-01 WO PCT/US2005/019108 patent/WO2006007251A2/en not_active Application Discontinuation
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2007
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Also Published As
Publication number | Publication date |
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EP1759381B1 (en) | 2018-12-26 |
CA2558013C (en) | 2012-11-13 |
US20110216079A1 (en) | 2011-09-08 |
US8144159B2 (en) | 2012-03-27 |
US20070257925A1 (en) | 2007-11-08 |
US20070182749A1 (en) | 2007-08-09 |
US20050285867A1 (en) | 2005-12-29 |
CA2765087C (en) | 2013-09-03 |
AU2005262676B2 (en) | 2008-11-13 |
WO2006007251A3 (en) | 2006-06-01 |
CA2765087A1 (en) | 2006-01-19 |
US7652678B2 (en) | 2010-01-26 |
AU2008207617B2 (en) | 2010-09-30 |
AU2005262676A1 (en) | 2006-01-19 |
AU2008207617A1 (en) | 2008-09-25 |
US7969453B2 (en) | 2011-06-28 |
CA2558013A1 (en) | 2006-01-19 |
EP1759381A2 (en) | 2007-03-07 |
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