giles
1a74d811f7
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Merges full history from art-dag/mono.git into the monorepo under the artdag/ directory. Contains: core (DAG engine), l1 (Celery rendering server), l2 (ActivityPub registry), common (shared templates/middleware), client (CLI), test (e2e). Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com> git-subtree-dir: artdag git-subtree-mainline:1a179de547git-subtree-split:4c2e716558
20 lines
728 B
Common Lisp
20 lines
728 B
Common Lisp
;; Film Grain effect - adds film grain texture
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(require-primitives "core")
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(define-effect film_grain
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:params (
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(intensity :type float :default 0.2 :range [0 1])
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(colored :type bool :default false)
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)
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(let ((grain-amount (* intensity 50)))
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(map-pixels frame
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(lambda (x y c)
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(if colored
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(rgb (clamp (+ (red c) (gaussian 0 grain-amount)) 0 255)
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(clamp (+ (green c) (gaussian 0 grain-amount)) 0 255)
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(clamp (+ (blue c) (gaussian 0 grain-amount)) 0 255))
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(let ((n (gaussian 0 grain-amount)))
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(rgb (clamp (+ (red c) n) 0 255)
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(clamp (+ (green c) n) 0 255)
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(clamp (+ (blue c) n) 0 255))))))))
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