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rose-ash/sexp_effects/effects/contrast.sexp
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Common Lisp

;; Contrast effect - adjusts image contrast
;; Uses vectorized adjust primitive for fast processing
(require-primitives "color_ops")
(define-effect contrast
:params (
(amount :type int :default 1 :range [0.5 3])
)
(color_ops:adjust-contrast frame amount))