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Maxwell Render 2.5 User Manual

Chapter 7. Setting up environment lighting | 31

used for IBL should be in the Latitude/ Longitude format (the width should be twice the

height). Images in “strobes” or “cross” formats will not work correctly.

Note: There are several available channels for specifying MXI/ HDR/ EXR maps. This

is a powerful feature as it allows the user to have more control over the effects of the

environment on the scene. For example, you can use one MXI/ HDR/ EXR map for the

illumination of the scene, and another map for the reections.

• Background channel: Allows the addition of an MXI/ HDR/ EXR map as a background

environment, supplying a background image in the scene. Screen mapping can be

used to map the MXI/ HDR/ EXR image to screen coordinates. This channel does not

provide any scene illumination or reections.

• Reection channel: Add an MXI/ HDR/ EXR map for reections on scene objects.

• Refraction channel: Add an MXI/ HDR/ EXR map for refractions on scene objects.

• Illumination channel: Add an MXI/ HDR/ EXR map for scene illumination.

Each channel can be edited separately. The following options are available for each

channel:

• Disable: The map will not be used for rendering.

• Same as Background: The same map and settings will be used as for the

Background channel

• Map: Select the MXI/ HDR/ EXR map.

• Intensity: Adjust the intensity of the map to increase or decrease its contribution to

scene illumination/ reections/ refractions.

• Scale: Scale the current map.

• Offset: Rotate the spherical environment in the X and Y axis. 0 - 100 represents

rotation from 0 to 360°.

• Use for Disabled: This option adds an extra control over the environment. If any

of the MXI/ HDR channels are disabled, you have the option to use the Sky Dome,

Physical Sky or None to replace the disabled channels. For example, if you disable the

IBL Illumination channel and set “Use for Disabled” to Physical Sky, it will provide the

illumination for the scene.

• Interpolation: This option can be useful when you have a low resolution HDR

map and you see pixelisation in the HDR map when it is seen in the background,

in reective objects or through transparent objects. The pixels in the map will be

interpolated to try and “blend” the pixels together to avoid the pixelated look.

F.01 IBL settings

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Arrow Group Industries LM86 Bedienungsanleitung Seite 31