forked from BilalY/Rasagar
28 lines
2.6 KiB
Markdown
28 lines
2.6 KiB
Markdown
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# IES importer reference
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The High Definition Render Pipeline (HDRP) includes an importer to handle the .ies file format. When you add an [IES profile](IES-Profile.md) to your project, the IES importer Inspector provides information and customization options for the internally used textures.
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When you apply the import settings, the importer generates a [Light](Light-Component.md) Prefab as a sub-asset of the IED profile. You can drag the Prefab into the Scene view or Hierarchy to create an instance of a Light that uses the IES profile.
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### Properties
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| **Property** | **Description** |
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| --------------- | ------------------------------------------------------------ |
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| **File Format Version** | The internal format of the IES file. |
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| **Photometric Type** | The type of the photometric information the IES file stores. |
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| **Maximum Intensity** | The intensity the importer uses to generate Light Prefab. |
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| **Manufacturer** | Metadata about the manufacturer of the luminaire. |
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| **Luminaire Catalog Number** | Metadata about the catalog number of the manufacturer of the luminaire. |
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| **Luminaire Description** | Metadata about the luminaire. |
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| **Lamp Catalog Number** | Metadata about the catalog number of the manufacturer of the Lamp. |
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| **Lamp Description** | Metadata about the Lamp. |
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| **Light Type** | The [Light](Light-Component.md) type the importer uses to generate the Light Prefab. |
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| **Spot Angle** | The distribution of pixels in the projection of spot Light IES profiles. Spot Lights require a 2D texture and, to project the IES in 2D, HDRP uses an angle on the upper hemisphere for a proper projection (specifically, HDRP uses a [Gnomonic projection](https://en.wikipedia.org/wiki/Gnomonic_projection)). |
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| **IES Size** | The size of the texture generated. For spot and area Lights, this is the size of the 2D texture. For point Lights, this is the size of the Cubemap. |
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| **Apply Light Attenuation** | Specifies whether to take the distance to the light source into account for spot Lights to have correct light attenuation. |
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| **IES Compression** | The compression Unity uses for the internal texture. |
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| **Use IES Maximum Intensity** | Specifies whether to use the intensity stored in the IES File for the Prefab the importer generates. |
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| **Aim Axis Rotation** | You can use this parameter to determine which orientation Unity projects the IES in the texture. This is particularly useful for an IES that is less symmetrical. |
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