---
title: "Supported Shaders (Mental Ray)"
url: "https://help.maxon.net/r3d/maya/en-us/Content/html/Supported%2BShaders%2B%28Mental%20Ray%29.html"
section_path: "Shaders > Shader Translation > Supported Shaders (Mental Ray)"
description: "Some Autodesk shaders map directly to Mental Ray shaders. Here is a list of those shaders that are indirectly supported."
---

# Supported Shaders (Mental Ray)

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# Supported Shaders (Mental Ray)

## Introduction

Some Autodesk shaders map directly to Mental Ray shaders. Here is a list of those shaders that are indirectly supported.

## Mental Ray Shaders

### Texture

#### mia_light_surface

The following parameters are not supported:

- use_lights
- lights_multiplier
- lights_eval
- Lights

Internally this is mapped to the Redshift [Incandescent](https://help.maxon.net/r3d/maya/en-us/Content/html/Incandescent.html.md) Material shader.

#### mia_amb_occlusion

The following parameters are not supported:

- falloff
- id_inclexcl
- id_nonself

#### mib_color_alpha

#### mib_color_average

#### mib_color_intensity

#### mib_color_mix

#### mib_twosided

### Material

#### mia_material / mia_material_x / mia_material_x_passes

The following parameters are not supported:

- anisotropy_channel
- ao_do_details
- backface_cull
- bump
- fg_quality
- fg_quality_w
- indirect_multiplier
- intr_grid_density
- intr_refl_ddis
- intr_refl_ddist_on
- intr_refl_samples
- intr_refr_samples
- lights
- mode
- no_diffuse_bump
- no_visible_area_hl
- ref_falloff_dist
- ref_falloff_on
- refl_falloff_color
- refl_falloff_color_on
- refl_interpolate
- refr_interpolate
- single_env_sample

See [Softimage](https://help.maxon.net/r3d/maya/en-us/Content/html/Supported%2BShaders%2B%28Autodesk%29.html.md) Architectural shader for other details.\
The multi-out feature of these shaders is not supported by Redshift.

#### mi_metallic_paint

The following parameters are not supported:

- flake_bump
- Irradiance_weight
- lights
- mode

See [Softimage](https://help.maxon.net/r3d/maya/en-us/Content/html/Supported%2BShaders%2B%28Autodesk%29.html.md) CarPaint for other details.

#### mip_cameramap

The following parameters are not supported:

- multiplier
- digamma (in Softimage – *see notes*)

In Softimage, 'multiplier' and 'degamma' are ignored because Redshift uses the 'Exposure' and 'Color Profile' options of the texture clip to achieve the same result.In Maya, 'multiplier' is ignored. Use the Redshift Camera Map shader instead.

#### mip_matteshadow

The following parameters are not supported:

- no_self_shadow
- catch_indirect (*see notes*)
- multiple_outputs
- illuminators list (*see notes*)

'catch_indirect' is implicitly enabled when 'catch_illuminators' is checked, this is because internally direct lighting and indirect lighting both use the 'Indirect' color to tint diffuse lighting results.To enable 'illuminator' lights to catch CG lighting on the matte surface, check the 'Matte Shadow Illuminator' option of the Redshift Physical Light and Redshift IES Lights.

### Environment

#### mia_physicalsky

The following parameters are not supported:

- background
- diffuse_horizontal_illuminance
- flags
- physically_scaled_sun
- use_background
- visibility_distance

### Light

#### mia_portal_light

The following parameters are not supported:

- cutoff_threshold
- shadow_ray_extension
- use_custom_environment
- visible

#### mia_photometric_light

The following parameters are not supported:

- cm2_factor (*use Redshift Options -> Output -> Photometric Units instead*)
- units_to_meter_scale (*use Redshift Options -> Output -> Photometric Units instead*)

#### mia_physical_sun

The following parameters are not supported:

- direct_normal_illuminance
- Illuminance_mode

#### mib_blackbody / mib_cie_d

Redshift's implementation of mib_blackbody and mib_cie_d use the same approximation algorithm. Meaningful temperature values are in the range 1667 to 25000.