2013-03-07 16:46:55 +00:00
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void main()
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2011-01-31 00:08:06 +00:00
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{
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2014-07-29 17:08:57 +00:00
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float4 c0 = Sample();
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2018-12-04 19:39:56 +00:00
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// Info: https://web.archive.org/web/20040101053504/http://www.oreillynet.com:80/cs/user/view/cs_msg/8691
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2013-03-07 16:46:55 +00:00
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float avg = (0.222 * c0.r) + (0.707 * c0.g) + (0.071 * c0.b);
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2014-07-29 17:08:57 +00:00
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SetOutput(float4(avg, avg, avg, c0.a));
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2011-01-31 00:08:06 +00:00
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}
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