Composite: don't write to null pixels (#1226)

jimp-dev · May 11, 2023 · aec79d0 · aec79d0
1 parent 16ee71c
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diff --git a/packages/core/src/composite/index.js b/packages/core/src/composite/index.js
@@ -68,6 +68,12 @@ export default function composite(src, x, y, options = {}, cb) {
         y + sy,
         constants.EDGE_CROP
       );
+
+      if (dstIdx === -1) {
+        // Skip target pixels outside of dst
+        return;
+      }
+
       const blended = blendmode(
         {
           r: this.bitmap.data[idx + 0] / 255,

diff --git a/packages/jimp/test/images/cops-composited.jpg b/packages/jimp/test/images/cops-composited.jpg