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Blender addon for aligning an object (e.g. a sun) to match the brightest part in a HDRI environment
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Latest commit 790031d Apr 13, 2019
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.gitignore Initial commit Jan 14, 2019
LICENSE Initial commit Jan 14, 2019 Update Feb 4, 2019 Bump version Apr 13, 2019 Resize HDRI if it's large, to improve performance Apr 13, 2019 Update class names Apr 13, 2019

HDRI Sun Aligner

HDRI Sun Aligner is a Blender 2.8 addon for automatically rotating an object (e.g. a sun) to match the brightest point in a HDRI environment texture. Some ideas when this may be useful:

  • Adding a sun to a scene rendered by EEVEE, as EEVEE cannot render shadows from HDRI environment textures
  • Adding any light to enhance a scene, in alignment with direct light from the environment


  • Add a HDRI environment texture (equirectangular projection) to the World in Blender
  • Open both the 3D Viewport and an Image Editor
  • HDRI Sun Aligner is accessed from the panel to the right:

  • Calculate the brightest point in the HDRI used for the environment by clicking on "Calculate sun position"
  • A preview of the calculated position is displayed in the image editor:

  • Updated "Longitude and Latitude" values are displayed in the panel (can be changed manually)
  • Select any object and click "Rotate object" to align it with a vector from the calculated point to origo
  • To add a new sun (rotated in alignment with the current sun position), click "Add new sun"
    • The new sun will be located in a new collection, "HDRI Sun Aligner"

Installation of HDRI Sun Aligner addon

  1. Download latest release from (source as ZIP).
  2. Open Blender preferences -> addons and select "Install from file"...
  3. Activate the addon, "HDRI Sun Aligner"
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