Squashed 'test/' content from commit f2edc20

git-subtree-dir: test
git-subtree-split: f2edc20cba865a6ef67ca807c2ed6cee8e6c2836

sexp_effects/effects/saturation.sexp

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+;; Saturation effect - adjusts color saturation
+;; Uses vectorized shift-hsv primitive for fast processing
+(require-primitives "color_ops")
+
+(define-effect saturation
+  :params (
+    (amount :type int :default 1 :range [0 3])
+  )
+  (color_ops:adjust-saturation frame amount))