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Rendering artifactReflections

Screen-Space Reflection Edge Leaking

Recognize reflection cutoffs caused by missing off-screen scene data.

SSRreflectionswaterscreen spacematerials

What you're seeing

Reflected objects fade, leak, or disappear near screen boundaries or when the source leaves the camera view.

Likely causes

  • Screen Space Reflections can only trace against information in the current screen image.
  • A smooth mirror-like surface makes the screen-space cutoff easy to see.

Check in this order

  1. 01Open Reflections view and confirm that the artifact follows the screen boundary.
  2. 02Disable or fade SSR in the Post Process Volume long enough to confirm the source.
  3. 03Decide whether the surface can use more roughness or reflection captures.
  4. 04Use Planar Reflections or Lumen Reflections when off-screen reflection coverage is required and the target budget supports it.

Views and commands

Reflections view

View Mode > Reflections

Replaces materials with mirror-like surfaces to expose reflection coverage.

SSR intensity

Post Process Volume > Reflections > Screen Space Reflections > Intensity

Fades or disables SSR for an A/B comparison.

SSR roughness cutoff

Post Process Volume > Reflections > Screen Space Reflections > Max Roughness

Controls which surface roughness values receive SSR.

Epic documentation

Related guides

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