Squashed 'test/' content from commit f2edc20

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

sexp_effects/effects/brightness.sexp

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+;; Brightness effect - adjusts overall brightness
+;; Uses vectorized adjust primitive for fast processing
+(require-primitives "color_ops")
+
+(define-effect brightness
+  :params (
+    (amount :type int :default 0 :range [-255 255])
+  )
+  (color_ops:adjust-brightness frame amount))