31 lines
1.4 KiB
Plaintext
31 lines
1.4 KiB
Plaintext
From rssfeeds@jmason.org Thu Sep 26 16:41:50 2002
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<jm@jmason.org>; Thu, 26 Sep 2002 16:29:31 +0100
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To: yyyy@spamassassin.taint.org
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From: guardian <rssfeeds@spamassassin.taint.org>
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Subject: A Non-Integer Power Function on the Pixel Shader
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Date: Thu, 26 Sep 2002 15:29:31 -0000
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Content-Type: text/plain; encoding=utf-8
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URL: http://www.newsisfree.com/click/-4,6436947,159/
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Date: 2002-08-01T09:04:55+01:00
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This feature, excerpted from Wolfgang Engel's ShaderX book from Wordware
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Publishing, presents a simple shader trick that performs a good per pixel
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approximation of a non-integer power function. The technique works for input
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values between 0 and 1 and supports large exponents. The presented shader does
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not require any texture look-up and is scalable, making it possible to spend
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more instructions in order to decrease the error or to reach greater exponents.
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