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Specializing Shaders
August 1, 1995
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Authors

Brian Guenter

Todd B. Knoblock

Erik Ruf
Publication Type
Inproceedings
Pages
8
Number
MSR-TR-95-49
Publisher
Association for Computing Machinery, Inc.
Copyright © 1995 by the Association for Computing Machinery, Inc. Permission to make
digital or hard copies of part or all of this work for personal or classroom use is granted without
fee provided that copies are not made or distributed for profit or commercial advantage and that
copies bear this notice and the full citation on the first page. Copyrights for components of this
work owned by others than ACM must be honored. Abstracting with credit is permitted. To copy
otherwise, to republish, to post on servers, or to redistribute to lists, requires prior specific
permission and/or a fee. Request permissions from Publications Dept, ACM Inc., fax +1 (212)
869-0481, or permissions@acm.org. The definitive version of this paper can be found at
ACM’s Digital Library –http://www.acm.org/dl/.
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Abstract
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Abstract
We have developed a system for interactive manipulation of shading parameters for three
dimensional rendering. The system takes as input user-defined shaders, written in a subset of C,
which are then specialized for interactive use. Since users typically experiment with different
values of a single shader parameter while leaving the others constant, we can benefit by
automatically generating a specialized shader that performs only those computations depending
on the parameter being varied; all other values needed by the shader can be precomputed and
cached. The specialized shaders are as much as 95 times faster than the original user defined
shader. This dramatic improvement in speed makes it possible to interactively view parameter
changes for relatively complex shading models, such as procedural solid texturing.
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