- See also
- References
- External links
In computer graphics, swizzling means rearranging the elements of a vector.[1] For example, if A = {1,2,3,4}, where the components are x, y, z, and w respectively, you could compute B = A.wwxy, whereupon B would equal {4,4,1,2}. This is common in GPGPU applications{{Examples|date=March 2010}}.
In terms of linear algebra, this is equivalent to multiplying by a matrix whose rows are standard basis vectors. If 
, then swizzling 
as above looks like
.
See also
- morton order
References
1. ^{{cite web | url=http://www.cs.uaf.edu/2005/fall/cs301/support/glfp/ | title=OpenGL ARB_fragment_program Quick Reference ("Cheat Sheet") | publisher=University of Alaska Fairbanks | accessdate=21 January 2014 | author=Lawlor, Orion}}
External links
- OpenGL Vertex Program documentation
1 : Computer graphics
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