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<EFBFBD><EFBFBD>s h a d e r O _ R E D A H S _ S E N T H G I R B _ T O O R _ E B U C _ O _ C U B E _ R O O T _ B R I G H T N E S _ S H A D E R _ O
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f l o a t O _ R E D A H S _ T N E I D A R G _ R A E N I L _ O _ L I N E A R _ G R A D I E N T _ S H A D E R _ O = ( - s q r t ( c o s ( . 5 * ( 4 . * a t a n ( 1 . ) ) * ( d o t ( N , I ) ) ) ) + 1 . ) ,
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f l o a t O _ S E N T H G I R B _ T O O R _ E B U C _ O _ C U B E _ R O O T _ B R I G H T N E S _ O = 4 . 6 8 7 5 ,
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o u t p u t f l o a t O _ R E D A H S _ O _ S H A D E R _ O = 0 . 0
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O _ R E D A H S _ O _ S H A D E R _ O =
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c l a m p ( p o w ( ( c o s ( . 5 * ( 4 . * a t a n ( 1 . ) ) * ( O _ R E D A H S _ T N E I D A R G _ R A E N I L _ O _ L I N E A R _ G R A D I E N T _ S H A D E R _ O - 1 . ) ) ) , 1 . / ( 3 ) ) , 0 . 0 , 1 . 0 )
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*
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( ( 1 . / O _ S E N T H G I R B _ T O O R _ E B U C _ O _ C U B E _ R O O T _ B R I G H T N E S _ O ) ) + ( 1 . - ( 1 . / O _ S E N T H G I R B _ T O O R _ E B U C _ O _ C U B E _ R O O T _ B R I G H T N E S _ O ) )
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)
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;
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}
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