Squashed 'l1/' content from commit 670aa58

git-subtree-dir: l1
git-subtree-split: 670aa582df99e87fca7c247b949baf452e8c234f

sexp_effects/effects/posterize.sexp

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+;; Posterize effect - reduces color levels
+(require-primitives "color_ops")
+
+(define-effect posterize
+  :params (
+    (levels :type int :default 8 :range [2 32])
+  )
+  (color_ops:posterize frame levels))