When you have a Reflection Vector plugged into a Cubemap and applied to the Emissive Channel of an Unlit Material, the Cubemap will not render on a mobile device with ES2 or in ES2 (Mobile/HTML) Preview.

Also Reproduced in Main Promotable CL-2568226

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Steps to Reproduce
  1. Open QAGame Editor
  2. Create a New Opaque Unlit Material
  3. Add a Texture Cube Parameter with TextureCube'/Engine/MapTemplates/Sky/SunsetAmbientCubemap.SunsetAmbientCubemap' assigned to it
  4. Attach a Reflection Vector WS to the Cube's UV Input
  5. Compile and Save Material
  6. Add a Sphere in the Level
  7. Assign the New Material to the Sphere
  8. In Settings, Change the Preview Rendering Level to Mobile / HTML5

RESULTS: Cubemap is not rendered on Sphere

EXPECTED: Cubemap should be rendered on Sphere

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ComponentUE - Platform - Mobile
Affects Versions4.
Target Fix4.10
Fix Commit2721138
Release Commit2721138
CreatedMay 28, 2015
ResolvedOct 8, 2015
UpdatedSep 16, 2019