MaterialPhysicalStandard

MaterialPhysicalStandard#

(Standard)

Category: /Material/Physical
Default object name: standard
Inherits from: ProjectItem > Material > MaterialPhysical

Description#

A surface material based on the interface of the Al Surface shader : http://www.anderslanglands.com/alshaders/alSurface.html.

Public Attributes#

Type	Name	Visual Hint	Description
`bool`	`fresnel_energy_conservation`	`VISUAL_HINT_DEFAULT`	If enabled it will compute the Fresnel using the microfacet normals.
`double[3]`	`diffuse_front_color`	`VISUAL_HINT_COLOR`	Define the diffuse albedo. The diffuse layer sits underneath both specular layers and so its intensity is scaled according to the Fresnel transmission of both the specular lobes.
`double`	`diffuse_front_strength`	`VISUAL_HINT_PERCENTAGE`	Strength of the diffuse color.
`double`	`diffuse_roughness`	`VISUAL_HINT_PERCENTAGE`	Roughness of the diffuse lobe. A zero value yields the actual Lambertian model, whereas greater values increase backward scattering phenomena.
`double[3]`	`diffuse_back_color`	`VISUAL_HINT_COLOR`	Amount of light transmitted by the translucent surface.
`double`	`diffuse_back_strength`	`VISUAL_HINT_PERCENTAGE`	strength of the back color.
`double`	`diffuse_sss_mix`	`VISUAL_HINT_PERCENTAGE`	Mix between the SSS and the diffuse. 0 means no SSS, full diffuse. 1 means full SSS, no diffuse. The SSS lobe sits underneath both specular layers and so its intensity is scaled according to the Fresnel transmission of both specular lobes.
`long`	`diffuse_sss_mode`	`VISUAL_HINT_DEFAULT`	Diffusion profile used to model the attenuation of light with distance due to subsurface scattering. The Gaussian profile is a blurry phenomenological model. The cubic profile is a sharper and more efficient approximation. The empirical profile is a good fit to actual SSS measurements.
`double`	`diffuse_sss_density_scale`	`VISUAL_HINT_SCALE`	Global density of the material, effectively dividing the mean subsurface scattering distance of all layers.
`double[3]`	`diffuse_sss_color_1`	`VISUAL_HINT_COLOR`	Wavelength-dependent mean subsurface scattering distance of SSS layer 1.
`double`	`diffuse_sss_distance_1`	`VISUAL_HINT_DISTANCE`	Scaling factor of the mean subsurface scattering distance of layer 1 at all wavelengths.
`double`	`diffuse_sss_weight_1`	`VISUAL_HINT_PERCENTAGE`	Weight of layer 1 relative to that of all SSS layers.
`double[3]`	`diffuse_sss_color_2`	`VISUAL_HINT_COLOR`	Wavelength-dependent mean subsurface scattering distance of SSS layer 2.
`double`	`diffuse_sss_distance_2`	`VISUAL_HINT_DISTANCE`	Scaling factor of the mean subsurface scattering distance of layer 2 at all wavelengths.
`double`	`diffuse_sss_weight_2`	`VISUAL_HINT_PERCENTAGE`	Weight of layer 2 relative to that of all SSS layers.
`double[3]`	`diffuse_sss_color_3`	`VISUAL_HINT_COLOR`	Wavelength-dependent mean subsurface scattering distance of SSS layer 3.
`double`	`diffuse_sss_distance_3`	`VISUAL_HINT_DISTANCE`	Scaling factor of the mean subsurface scattering distance of layer 3 at all wavelengths.
`double`	`diffuse_sss_weight_3`	`VISUAL_HINT_PERCENTAGE`	Weight of layer 3 relative to that of all SSS layers.
`string`	`diffuse_sss_group`	`VISUAL_HINT_TAG`	Name of the group among which illumination propagates between SSS materials.
`long`	`diffuse_normal_mode`	`VISUAL_HINT_DEFAULT`	Define which geometric normal to use for the shading.
`double`	`diffuse_normal_input`	`VISUAL_HINT_PERCENTAGE`	Override the shading normal by the one given as input. The value controls the blending with the original normal.
`double[3]`	`specular_1_color`	`VISUAL_HINT_COLOR`	Reflection color of the specular 1 lobe. The specular 1 lobe sits on top of all the others and so both receives all the light and attenuates the light reaching all other lobes.
`double`	`specular_1_strength`	`VISUAL_HINT_PERCENTAGE`	Reflection strength of the specular lobe.
`double`	`specular_1_roughness`	`VISUAL_HINT_PERCENTAGE`	Roughness of the specular lobe.
`double`	`specular_1_anisotropy`	`VISUAL_HINT_PERCENTAGE`	Anisotropy of the specular lobe.
`double`	`specular_1_anisotropy_rotation`	`VISUAL_HINT_PERCENTAGE`	Rotates the anisotropy direction of the specular lobe around the normal (100% equates to 180 degrees).
`long`	`specular_1_fresnel_preset`	`VISUAL_HINT_DEFAULT`	Set of measured Fresnel presets for well-known materials.
`long`	`specular_1_fresnel_mode`	`VISUAL_HINT_DEFAULT`	Dielectric is appropriate for non-conductive materials such as most organics, plastic, glass and water etc. Metallic is appropriate for metals.
`double`	`specular_1_index_of_refraction`	`VISUAL_HINT_DEFAULT`	Set the index of refraction.
`double[3]`	`specular_1_fresnel_reflectivity`	`VISUAL_HINT_COLOR`	Reflectance color at normal incidence (aka F0).
`double[3]`	`specular_1_fresnel_edge_tint`	`VISUAL_HINT_COLOR`	Color bias as the viewing direction becomes parallel to the surface.
`long`	`specular_1_brdf`	`VISUAL_HINT_DEFAULT`	BRDF used for the specular lobe.
`double[3]`	`specular_1_exit_color`	`VISUAL_HINT_COLOR`	Set the reflection color when there is no more bounce along the path.
`long`	`specular_1_normal_mode`	`VISUAL_HINT_DEFAULT`	Define which geometric normal to use for the shading.
`double`	`specular_1_normal_input`	`VISUAL_HINT_PERCENTAGE`	Override the shading normal by the one given as input. The value controls the blending with the original normal.
`double[3]`	`specular_2_color`	`VISUAL_HINT_COLOR`	Reflection color of the second specular 2 lobe. The specular 2 lobe sits underneath the specular 1 lobe and so is attenuated by it and attenuates the light reaching all other lobes
`double`	`specular_2_strength`	`VISUAL_HINT_PERCENTAGE`	Reflection strength of the specular lobe.
`double`	`specular_2_roughness`	`VISUAL_HINT_PERCENTAGE`	Roughness of the specular lobe.
`double`	`specular_2_anisotropy`	`VISUAL_HINT_PERCENTAGE`	Anisotropy of the specular lobe.
`double`	`specular_2_anisotropy_rotation`	`VISUAL_HINT_PERCENTAGE`	Rotates the anisotropy direction of the specular lobe around the normal (100% equates to 180 degrees).
`long`	`specular_2_fresnel_preset`	`VISUAL_HINT_DEFAULT`	Set of measured Fresnel presets for well-known materials.
`long`	`specular_2_fresnel_mode`	`VISUAL_HINT_DEFAULT`	Selects which mode to use for the fresnel. Dielectric is appropriate for non-conductive materials such as most organics, plastic, glass and water etc. Metallic is appropriate for metals.
`double`	`specular_2_index_of_refraction`	`VISUAL_HINT_DEFAULT`	Set the index of refraction.
`double[3]`	`specular_2_fresnel_reflectivity`	`VISUAL_HINT_COLOR`	Reflectance color at normal incidence (aka F0).
`double[3]`	`specular_2_fresnel_edge_tint`	`VISUAL_HINT_COLOR`	Color bias as the viewing direction becomes parallel to the surface.
`long`	`specular_2_brdf`	`VISUAL_HINT_DEFAULT`	BRDF used for the specular lobe.
`double[3]`	`specular_2_exit_color`	`VISUAL_HINT_COLOR`	Set the reflection color when there is no more bounce along the path.
`long`	`specular_2_normal_mode`	`VISUAL_HINT_DEFAULT`	Define which geometric normal to use for the shading.
`double`	`specular_2_normal_input`	`VISUAL_HINT_PERCENTAGE`	Override the shading normal by the one given as input. The value controls the blending with the original normal.
`double[3]`	`transmission_color`	`VISUAL_HINT_COLOR`	Set the refraction color of the material.
`double`	`transmission_strength`	`VISUAL_HINT_PERCENTAGE`	strength of the refraction color. The transmission lobe sits underneath the two specular layers and is attenuated by both.
`bool`	`transmission_link_to_specular`	`VISUAL_HINT_DEFAULT`	The roughness and the ior will be the same as the specular lobe choose in Transmission Linked To.
`long`	`transmission_linked_to`	`VISUAL_HINT_DEFAULT`	Choose which specular will be linked to the transmission
`double`	`transmission_index_of_refraction`	`VISUAL_HINT_DEFAULT`	Set the index of refraction.
`double`	`transmission_roughness`	`VISUAL_HINT_PERCENTAGE`	Roughness of the refraction surface.
`double[3]`	`transmittance_color`	`VISUAL_HINT_COLOR`	Set the transmittance color of the material.
`double`	`transmittance_density`	`VISUAL_HINT_DEFAULT`	Set the transmittance density of the material.
`double[3]`	`transmission_scatter`	`VISUAL_HINT_COLOR`	Color of the scattering
`double`	`transmission_scatter_anisotropy`	`VISUAL_HINT_PERCENTAGE`	Anisotropy of the scattering.
`double[3]`	`transmission_exit_color`	`VISUAL_HINT_COLOR`	Set the refraction color when there is no more bounce along the path.
`long`	`transmission_normal_mode`	`VISUAL_HINT_DEFAULT`	Define which geometric normal to use for the shading.
`double`	`transmission_normal_input`	`VISUAL_HINT_PERCENTAGE`	Override the shading normal by the one given as input. The value controls the blending with the original normal.
`double[3]`	`emission_color`	`VISUAL_HINT_COLOR`	Define the emission color.
`double`	`emission_weight`	`VISUAL_HINT_PERCENTAGE`	strength of the emission color

Inherited Public Attributes#

Type	Name	Visual Hint	Description
`bool`	`export_aovs`	`VISUAL_HINT_DEFAULT`	Compute and write Aovs defined in the shading graph
`reference` (`AovStore`)	`arbitrary_output_variables`	`VISUAL_HINT_DEFAULT`	Set the list of extra channels to write to the image.
`string`	`light_path_expression_label`	`VISUAL_HINT_DEFAULT`	Set the material label in light path expressions.
`long`	`material_sample_count`	`VISUAL_HINT_SAMPLE_PER_PIXEL`	Material sample count per pixel.
`double`	`diffuse_sampling_multiplier`	`VISUAL_HINT_SCALE`	Material diffuse sample count multiplier.
`double`	`glossy_reflection_sampling_multiplier`	`VISUAL_HINT_SCALE`	Material glossy reflection sample count multiplier.
`double`	`glossy_transmission_sampling_multiplier`	`VISUAL_HINT_SCALE`	Material glossy transmission sample count multiplier.
`double`	`subsurface_sampling_multiplier`	`VISUAL_HINT_SCALE`	Material subsurface sample count multiplier.
`double`	`volume_sampling_multiplier`	`VISUAL_HINT_SCALE`	Material volume sample count multiplier.
`double`	`russian_roulette`	`VISUAL_HINT_PERCENTAGE`	Amount of Russian roulette used on the material samples.
`double`	`roughness_noise_optimization`	`VISUAL_HINT_PERCENTAGE`	Noise reduction strategy along rough light path.
`double`	`multiple_scattering_strength`	`VISUAL_HINT_PERCENTAGE`	Strength of compensation for energy lost by multiple scattering.
`long`	`diffuse_depth`	`VISUAL_HINT_DEFAULT`	Maximum diffuse depth.
`long`	`specular_reflection_depth`	`VISUAL_HINT_DEFAULT`	Maximum specular reflection depth.
`long`	`glossy_reflection_depth`	`VISUAL_HINT_DEFAULT`	Maximum glossy reflection depth.
`long`	`specular_transmission_depth`	`VISUAL_HINT_DEFAULT`	Maximum specular transmission depth.
`long`	`glossy_transmission_depth`	`VISUAL_HINT_DEFAULT`	Maximum glossy transmission depth.
`long`	`volume_depth`	`VISUAL_HINT_DEFAULT`	Maximum volume depth.
`double[3]`	`opacity`	`VISUAL_HINT_COLOR`	Opacity of the material.
`long`	`normal_mode`	`VISUAL_HINT_DEFAULT`	Define which geometric normal to use for the shading.
`double`	`normal_input`	`VISUAL_HINT_PERCENTAGE`	Override the shading normal by the one given as input. The value controls the blending with the original normal.
`long`	`sidedness`	`VISUAL_HINT_DEFAULT`	Sidedness of this surface used for this material. 'Single' keeps the original normals no matter what. 'Double' may flip the normal to be oriented toward the incomming direction. 'Invert' flips the original normal no matter what.
`long`	`shadow_casting_mode`	`VISUAL_HINT_DEFAULT`	Defines the properties of the material when casting shadows: fully opaque (regardless of the actual value of the opacity of the material), artistic (user-defined opacity and coloring), pseudo-caustics (cheaply emulating actual refractive caustics) or physical (intrinsic transparency of the material), where the last three are modulated by the opacity of the material.
`double`	`shadow_opacity`	`VISUAL_HINT_PERCENTAGE`	Defines how dark the shadows cast by this material are.
`double`	`shadow_coloring`	`VISUAL_HINT_PERCENTAGE`	Defines how much refraction and absorption colors affect shadowing.
`long`	`reflective_caustics`	`VISUAL_HINT_DEFAULT`	Reflective caustics computation mode.
`long`	`refractive_caustics`	`VISUAL_HINT_DEFAULT`	Refractive caustics computation mode.

CID#

class "MaterialPhysicalStandard" "MaterialPhysical" {
    #version 0.97
    doc "A surface material based on the interface of the Al Surface shader : http://www.anderslanglands.com/alshaders/alSurface.html."
    attribute_group "energy conservation" {
        bool "fresnel_energy_conservation" {
            doc "If enabled it will compute the Fresnel using the microfacet normals."
            value yes
        }
    }
    attribute_group "diffuse" {
        color "diffuse_front_color" {
            doc "Define the diffuse albedo. The diffuse layer sits underneath both specular layers and so its intensity is scaled according to the Fresnel transmission of both the specular lobes."
            texturable yes
            animatable yes
            value 0.5 0.5 0.5
        }
        percentage "diffuse_front_strength" {
            doc "Strength of the diffuse color."
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 0.0 10
            ui_range yes 0.0 1
            value 1
        }
        percentage "diffuse_roughness" {
            doc "Roughness of the diffuse lobe. A zero value yields the actual Lambertian model, whereas greater values increase backward scattering phenomena."
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 0.0 100
            ui_range yes 0.0 1
            value 0.0
        }
    }
    attribute_group "diffuse>backlight" {
        collapsed yes
        color "diffuse_back_color" {
            doc "Amount of light transmitted by the translucent surface."
            texturable yes
            animatable yes
            read_only yes
            value 0.18 0.18 0.18
        }
        percentage "diffuse_back_strength" {
            doc "strength of the back color."
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 0.0 10
            ui_range yes 0.0 1
            value 0.0
        }
    }
    attribute_group "diffuse>subsurface" {
        collapsed yes
        percentage "diffuse_sss_mix" {
            doc "Mix between the SSS and the diffuse. 0 means no SSS, full diffuse. 1 means full SSS, no diffuse. The SSS lobe sits underneath both specular layers and so its intensity is scaled according to the Fresnel transmission of both specular lobes."
            texturable yes
            slider yes
            numeric_range yes 0.0 1
            ui_range yes 0.0 1
            value 0.0
        }
        long "diffuse_sss_mode" {
            doc "Diffusion profile used to model the attenuation of light with distance due to subsurface scattering. The Gaussian profile is a blurry phenomenological model. The cubic profile is a sharper and more efficient approximation. The empirical profile is a good fit to actual SSS measurements."
            read_only yes
            preset "Gaussian" "1"
            preset "Cubic" "2"
            preset "Empirical" "0"
            value 2
        }
        scale "diffuse_sss_density_scale" {
            doc "Global density of the material, effectively dividing the mean subsurface scattering distance of all layers."
            texturable yes
            animatable yes
            numeric_range yes 0.0001 1.79769313486232e+308
            ui_range yes 0.0001 1.79769313486232e+308
            read_only yes
            value 1
        }
        color "diffuse_sss_color_1" {
            doc "Wavelength-dependent mean subsurface scattering distance of SSS layer 1."
            texturable yes
            animatable yes
            read_only yes
            value 0.439 0.156 0.078
        }
        distance "diffuse_sss_distance_1" {
            doc "Scaling factor of the mean subsurface scattering distance of layer 1 at all wavelengths."
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 0.0001 1.79769313486232e+308
            ui_range yes 0.0001 0.1
            read_only yes
            value 1.5
        }
        percentage "diffuse_sss_weight_1" {
            doc "Weight of layer 1 relative to that of all SSS layers."
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 0.0 10
            ui_range yes 0.0 1
            read_only yes
            value 1
        }
        color "diffuse_sss_color_2" {
            doc "Wavelength-dependent mean subsurface scattering distance of SSS layer 2."
            texturable yes
            animatable yes
            read_only yes
            value 0.439 0.08 0.018
        }
        distance "diffuse_sss_distance_2" {
            doc "Scaling factor of the mean subsurface scattering distance of layer 2 at all wavelengths."
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 0.0001 1.79769313486232e+308
            ui_range yes 0.0001 0.1
            read_only yes
            value 4
        }
        percentage "diffuse_sss_weight_2" {
            doc "Weight of layer 2 relative to that of all SSS layers."
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 0.0 10
            ui_range yes 0.0 1
            read_only yes
            value 0.0
        }
        color "diffuse_sss_color_3" {
            doc "Wavelength-dependent mean subsurface scattering distance of SSS layer 3."
            texturable yes
            animatable yes
            read_only yes
            value 0.523 0.637 0.667
        }
        distance "diffuse_sss_distance_3" {
            doc "Scaling factor of the mean subsurface scattering distance of layer 3 at all wavelengths."
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 0.0001 1.79769313486232e+308
            ui_range yes 0.0001 0.1
            read_only yes
            value 0.75
        }
        percentage "diffuse_sss_weight_3" {
            doc "Weight of layer 3 relative to that of all SSS layers."
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 0.0 10
            ui_range yes 0.0 1
            read_only yes
            value 0.0
        }
        tag "diffuse_sss_group" {
            doc "Name of the group among which illumination propagates between SSS materials."
            read_only yes
            value ""
        }
    }
    attribute_group "diffuse>advanced" {
        collapsed yes
        ui_weight 1000
        long "diffuse_normal_mode" {
            doc "Define which geometric normal to use for the shading."
            preset "Flat" "0"
            preset "Smooth" "1"
            value 1
        }
        percentage "diffuse_normal_input" {
            doc "Override the shading normal by the one given as input. The value controls the blending with the original normal."
            texturable yes
            animatable yes
            numeric_range yes 0.0 1
            ui_range yes 0.0 1
            value 1
        }
    }
    attribute_group "specular_1" {
        color "specular_1_color" {
            doc "Reflection color of the specular 1 lobe. The specular 1 lobe sits on top of all the others and so both receives all the light and attenuates the light reaching all other lobes."
            texturable yes
            animatable yes
            value 1 1 1
        }
        percentage "specular_1_strength" {
            doc "Reflection strength of the specular lobe."
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 0.0 10
            ui_range yes 0.0 1
            value 1
        }
        percentage "specular_1_roughness" {
            doc "Roughness of the specular lobe."
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 0.0 1
            ui_range yes 0.0 1
            value 0.3
        }
        percentage "specular_1_anisotropy" {
            doc "Anisotropy of the specular lobe."
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 0.0 1
            ui_range yes 0.0 1
            value 0.5
        }
        percentage "specular_1_anisotropy_rotation" {
            doc "Rotates the anisotropy direction of the specular lobe around the normal (100% equates to 180 degrees)."
            texturable yes
            animatable yes
            slider yes
            ui_range yes 0.0 1
            read_only yes
            value 0.0
        }
    }
    attribute_group "specular_1>fresnel" {
        collapsed yes
        long "specular_1_fresnel_preset" {
            doc "Set of measured Fresnel presets for well-known materials."
            preset "Custom" "-1"
            preset "Polyurethane" "0"
            preset "Water" "1"
            preset "Aluminium" "2"
            preset "Chromium" "3"
            preset "Copper" "4"
            preset "Gold" "5"
            preset "Silver" "6"
            preset "Titanium" "7"
            value -1
        }
        long "specular_1_fresnel_mode" {
            doc "Dielectric is appropriate for non-conductive materials such as most organics, plastic, glass and water etc. Metallic is appropriate for metals."
            preset "Dielectric" "0"
            preset "Metallic" "1"
            value 0
        }
        double "specular_1_index_of_refraction" {
            doc "Set the index of refraction."
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 1e-06 1000000000
            ui_range yes 0.001 5
            value 1.4
        }
        color "specular_1_fresnel_reflectivity" {
            doc "Reflectance color at normal incidence (aka F0)."
            texturable yes
            animatable yes
            read_only yes
            value 0.04 0.04 0.04
        }
        color "specular_1_fresnel_edge_tint" {
            doc "Color bias as the viewing direction becomes parallel to the surface."
            texturable yes
            animatable yes
            read_only yes
            value 0.0 0.0 0.0
        }
    }
    attribute_group "specular_1>advanced" {
        collapsed yes
        ui_weight 1000
        long "specular_1_brdf" {
            doc "BRDF used for the specular lobe."
            preset "GGX" "0"
            preset "Ward" "1"
            preset "Beckmann" "2"
            value 0
        }
        color "specular_1_exit_color" {
            doc "Set the reflection color when there is no more bounce along the path."
            texturable yes
            animatable yes
            value 0.0 0.0 0.0
        }
        long "specular_1_normal_mode" {
            doc "Define which geometric normal to use for the shading."
            preset "Flat" "0"
            preset "Smooth" "1"
            value 1
        }
        percentage "specular_1_normal_input" {
            doc "Override the shading normal by the one given as input. The value controls the blending with the original normal."
            texturable yes
            animatable yes
            numeric_range yes 0.0 1
            ui_range yes 0.0 1
            value 1
        }
    }
    attribute_group "specular_2" {
        collapsed yes
        color "specular_2_color" {
            doc "Reflection color of the second specular 2 lobe. The specular 2 lobe sits underneath the specular 1 lobe and so is attenuated by it and attenuates the light reaching all other lobes"
            texturable yes
            animatable yes
            read_only yes
            value 1 1 1
        }
        percentage "specular_2_strength" {
            doc "Reflection strength of the specular lobe."
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 0.0 10
            ui_range yes 0.0 1
            value 0.0
        }
        percentage "specular_2_roughness" {
            doc "Roughness of the specular lobe."
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 0.0 1
            ui_range yes 0.0 1
            read_only yes
            value 0.5
        }
        percentage "specular_2_anisotropy" {
            doc "Anisotropy of the specular lobe."
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 0.0 1
            ui_range yes 0.0 1
            read_only yes
            value 0.5
        }
        percentage "specular_2_anisotropy_rotation" {
            doc "Rotates the anisotropy direction of the specular lobe around the normal (100% equates to 180 degrees)."
            texturable yes
            animatable yes
            slider yes
            ui_range yes 0.0 1
            read_only yes
            value 0.0
        }
    }
    attribute_group "specular_2>fresnel" {
        collapsed yes
        long "specular_2_fresnel_preset" {
            doc "Set of measured Fresnel presets for well-known materials."
            read_only yes
            preset "Custom" "-1"
            preset "Polyurethane" "0"
            preset "Water" "1"
            preset "Aluminium" "2"
            preset "Chromium" "3"
            preset "Copper" "4"
            preset "Gold" "5"
            preset "Silver" "6"
            preset "Titanium" "7"
            value -1
        }
        long "specular_2_fresnel_mode" {
            doc "Selects which mode to use for the fresnel. Dielectric is appropriate for non-conductive materials such as most organics, plastic, glass and water etc. Metallic is appropriate for metals."
            read_only yes
            preset "Dielectric" "0"
            preset "Metallic" "1"
            value 0
        }
        double "specular_2_index_of_refraction" {
            doc "Set the index of refraction."
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 1e-06 1000000000
            ui_range yes 0.001 5
            read_only yes
            value 1.4
        }
        color "specular_2_fresnel_reflectivity" {
            doc "Reflectance color at normal incidence (aka F0)."
            texturable yes
            animatable yes
            read_only yes
            value 0.548 0.549 0.57
        }
        color "specular_2_fresnel_edge_tint" {
            doc "Color bias as the viewing direction becomes parallel to the surface."
            texturable yes
            animatable yes
            read_only yes
            value 0.579 0.598 0.62
        }
    }
    attribute_group "specular_2>advanced" {
        collapsed yes
        ui_weight 1000
        long "specular_2_brdf" {
            doc "BRDF used for the specular lobe."
            read_only yes
            preset "GGX" "0"
            preset "Ward" "1"
            preset "Beckmann" "2"
            value 0
        }
        color "specular_2_exit_color" {
            doc "Set the reflection color when there is no more bounce along the path."
            texturable yes
            animatable yes
            read_only yes
            value 0.0 0.0 0.0
        }
        long "specular_2_normal_mode" {
            doc "Define which geometric normal to use for the shading."
            preset "Flat" "0"
            preset "Smooth" "1"
            value 1
        }
        percentage "specular_2_normal_input" {
            doc "Override the shading normal by the one given as input. The value controls the blending with the original normal."
            texturable yes
            animatable yes
            numeric_range yes 0.0 1
            ui_range yes 0.0 1
            value 1
        }
    }
    attribute_group "transmission" {
        collapsed yes
        color "transmission_color" {
            doc "Set the refraction color of the material."
            texturable yes
            animatable yes
            read_only yes
            value 1 1 1
        }
        percentage "transmission_strength" {
            doc "strength of the refraction color. The transmission lobe sits underneath the two specular layers and is attenuated by both."
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 0.0 10
            ui_range yes 0.0 1
            value 0.0
        }
        bool "transmission_link_to_specular" {
            doc "The roughness and the ior will be the same as the specular lobe choose in Transmission Linked To."
            read_only yes
            value yes
        }
        long "transmission_linked_to" {
            doc "Choose which specular will be linked to the transmission"
            read_only yes
            preset "Specular 1" "0"
            preset "Specular 2" "1"
            value 0
        }
        double "transmission_index_of_refraction" {
            doc "Set the index of refraction."
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 1e-06 1000000000
            ui_range yes 0.001 5
            read_only yes
            value 1.4
        }
        percentage "transmission_roughness" {
            doc "Roughness of the refraction surface."
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 0.0 1
            ui_range yes 0.0 1
            read_only yes
            value 0.0
        }
    }
    attribute_group "transmission>attenuation" {
        collapsed yes
        color "transmittance_color" {
            doc "Set the transmittance color of the material."
            texturable yes
            animatable yes
            value 1 1 1
        }
        double "transmittance_density" {
            doc "Set the transmittance density of the material."
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 0.0 10000000
            ui_range yes 0.0 10
            value 0.0
        }
        color "transmission_scatter" {
            doc "Color of the scattering"
            texturable yes
            animatable yes
            value 0.0 0.0 0.0
        }
        percentage "transmission_scatter_anisotropy" {
            doc "Anisotropy of the scattering."
            texturable yes
            animatable yes
            slider yes
            ui_range yes -1 1
            value 0.0
        }
    }
    attribute_group "transmission>advanced" {
        collapsed yes
        ui_weight 1000
        color "transmission_exit_color" {
            doc "Set the refraction color when there is no more bounce along the path."
            texturable yes
            animatable yes
            read_only yes
            value 0.0 0.0 0.0
        }
        long "transmission_normal_mode" {
            doc "Define which geometric normal to use for the shading."
            preset "Flat" "0"
            preset "Smooth" "1"
            value 1
        }
        percentage "transmission_normal_input" {
            doc "Override the shading normal by the one given as input. The value controls the blending with the original normal."
            texturable yes
            animatable yes
            numeric_range yes 0.0 1
            ui_range yes 0.0 1
            value 1
        }
    }
    attribute_group "emission" {
        collapsed yes
        color "emission_color" {
            doc "Define the emission color."
            texturable yes
            animatable yes
            read_only yes
            value 1 1 1
        }
        percentage "emission_weight" {
            doc "strength of the emission color"
            texturable yes
            animatable yes
            slider yes
            numeric_range yes 0.0 10000000
            ui_range yes 0.0 1
            value 0.0
        }
    }
    set "shadow_casting_mode" {
        private no
        hidden no
        saveable yes
        texturable no
        animatable no
        slider no
        numeric_range no 0.0 1
        ui_range no 0.0 1
        dg_active yes
        dg_cyclic no
        dirtiness_pass_through no
        read_only no
        shading_variable no
        experimental no
        advanced no
        overriden no
        promote_attribute no
        allow_expression yes
        localizable yes
        preset "Opaque" "0"
        preset "Artistic" "1"
        preset "Physical" "3"
        preset "Pseudo-Caustics" "2"
        value 2
    }
}