The User Interface Introduction of IBL

1

IBL Images

  • Activate IBL: Under normal circumstances, PBR should use IBL (EXR or HDR formats are recommended for optimal results).
  • GI Indirect Light: Activate this box in order that the IBL lights can bounce between different surfaces in the projects when the GI effect is turned on.
  • IBL Image:This is where you load the HDRI image, we recommend .hdr or .exr formats. You can directly drag in a .hdr or .exr image to this area to change the IBL image. Using other aforementioned formats such as .jpg or .png can create undesirable results.

  • Baking IBL with Initial Source: Activate this box to use the loaded IBL Image for HDRI baking.

  • Use sRGB:If you are using HDR or EXR formats, do not check this box because the these formats are in linear color-space.
  • Add New IBL Clip: Use this to insert a new IBL image clip at the current frame in the timeline. Every IBL clip has one IBL image and a blend region at the head of the clip that can be adjusted in the timeline track.
2

Sky Settings

  • Visualize Sky: These two buttons are used to show / hide the Sky entity.
  • Sync Sky: By activating the Image and Rotation boxes, you are able to synchronously adjust the IBL and Sky image or angle.
  • Sky Softness: This slider can blur the Sky while keep the diffuse image of the sky untouched.
  • Sky Setting: Click this button to open the Modify panel > Sky section for further adjustments.
3

Baking IBL

  • Bake Image Size: Set the desired resolution for the image after baking.
  • Auto Load HDRI: Activate this box to automatically load the baked IBL images once it has finished calculating.
  • Bake IBL: Bakes an HDRI image in .hdr format from the pivot of the selected object in the scene.
4

IBL Transformation

To transform the IBL sphere.

  1. Rotate IBL: Click this button to toggle the IBL rotation gizmo On / Off; the keyboard shortcut is Shift + I.
  2. Transformation Field: In addition to use the gizmo for transforming the IBL sphere, you are able to use these fields to type the desired values.
  3. Reset: Click this button to retrieve the initial transformation values of the IBL sphere.