CA2236071A1 - Texture compositing apparatus and method - Google Patents

Texture compositing apparatus and method

Info

Publication number
CA2236071A1
CA2236071A1 CA002236071A CA2236071A CA2236071A1 CA 2236071 A1 CA2236071 A1 CA 2236071A1 CA 002236071 A CA002236071 A CA 002236071A CA 2236071 A CA2236071 A CA 2236071A CA 2236071 A1 CA2236071 A1 CA 2236071A1
Authority
CA
Canada
Prior art keywords
clocal
cin
texture
tcu
data signal
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002236071A
Other languages
French (fr)
Other versions
CA2236071C (en
Inventor
Gary Tarolli
Scott Sellers
James E. Margeson, Iii
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nvidia Corp
Original Assignee
Individual
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 as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of CA2236071A1 publication Critical patent/CA2236071A1/en
Application granted granted Critical
Publication of CA2236071C publication Critical patent/CA2236071C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T15/00—3D [Three Dimensional] image rendering
    • G06T15/50—Lighting effects
    • G06T15/503—Blending, e.g. for anti-aliasing
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T15/00—3D [Three Dimensional] image rendering
    • G06T15/04—Texture mapping

Abstract

A texture compositing apparatus (figure 6) and method for combining multiple independent texture colors in a variety of ways in a single execution pass using a single texture compositing unit (TCU) (304) per texture. The TCU (30 4) receives a control signal, (216) a blend factor (320), a local data signal (Clocal/Alocal) (226C, 228C), and an output data signal (Cin/Ain) (218B, 220 B) generated by another TCU, the local data signal and the ouput data signal represent a texture color in a RGBA format. Based upon the control signal (216), the TCU (304) can generate an output signal (218C, 220C) based on a variety of functions. The outputs that can be generated include but are not limited to: (1) zero; (2) one; (3) Cin; (4) Clocal; (5) Cin + Clocal; (6) Ci n - Clocal; (7) Cin * Clocal; (8) Cin * Clocal + Alocal; (9) Cin * Alocal + Clocal; (10) (Cin - Clocal) * Fblend + Clocal; and (11) (Cin - Clocal) * (1- Fblend) + Clocal. Another feature of the invention is that multiple TCUs can be serially coupled to enable addition texture colors to be combined in a single execution path.
CA002236071A 1995-11-03 1996-11-01 Texture compositing apparatus and method Expired - Fee Related CA2236071C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/552,740 1995-11-03
US08/552,740 US5740343A (en) 1995-11-03 1995-11-03 Texture compositing apparatus and method
PCT/US1996/017401 WO1997016803A1 (en) 1995-11-03 1996-11-01 Texture compositing apparatus and method

Publications (2)

Publication Number Publication Date
CA2236071A1 true CA2236071A1 (en) 1997-05-09
CA2236071C CA2236071C (en) 2002-06-18

Family

ID=24206605

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002236071A Expired - Fee Related CA2236071C (en) 1995-11-03 1996-11-01 Texture compositing apparatus and method

Country Status (6)

Country Link
US (2) US5740343A (en)
EP (1) EP0858642A4 (en)
JP (1) JP3103118B2 (en)
AU (1) AU714006B2 (en)
CA (1) CA2236071C (en)
WO (1) WO1997016803A1 (en)

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Also Published As

Publication number Publication date
JPH11501428A (en) 1999-02-02
EP0858642A4 (en) 1999-10-06
WO1997016803A1 (en) 1997-05-09
AU714006B2 (en) 1999-12-16
US5740343A (en) 1998-04-14
EP0858642A1 (en) 1998-08-19
JP3103118B2 (en) 2000-10-23
CA2236071C (en) 2002-06-18
US5870102A (en) 1999-02-09
AU7483696A (en) 1997-05-22

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