Arnold for 3ds max – Render objects as volumes (volume shading)

Software:
3ds max 2019 | Arnold 5

In-order for objects in 3ds max to be rendered as volumes with Arnold, the object mesh has to be converted to a volume, and a Standard Volume material assigned to the object:

  1. Add an Arnold Properties modifier to the object.
  2. Under Volume set the Step Size to a value higher than 0.0.
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  3. Assign a Standard Volume material to the object and set it’s parameters to design the volumetric effect:
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Examples:

* Note that both Density and Depth control the transparency or ‘thickness’ of the volume. (lower Depth setting creates a thicker volume)
* When Scattering is set to 0.0 the volume will have only a absorption effect

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In this example an Arnold Noise map is connected to the Standard Volume‘s Density parameter:
* Note that the Scale values must be set correctly in order to actually get a ‘cloudy’ effect.
* Note that the noise color values are now controlling the Density of the volume.

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Related:
Arnold for 3ds max God Rays

 

Arnold for 3ds max – Volumetric Fog and ‘God Rays’

Software:
3ds max 2019 | Arnold 5

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Adding a ‘Volume Light’ effect in Arnold for 3ds max is fairly simple:

  1. In the Render Setup windows > Arnold Renderer tab, under Environment, Background & Atmosphere:
  2. Click the Scene Atmosphere material slot, add an Arnold Atmosphere Volume material to it,
    And drag it as an instance to the Material Editor to edit it’s parameters.
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  3. Set the Density to a higher than 0.0 value, so the material will have an effect.
  4. You’ll probably need to significantly raise the number of samples in the Atmosphere Volume material, and also the number of Volume samples in the light settings in order to get a clean render.

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Related:
Arnold for 3ds max Volume Shading

Simple Snow Material in VRay for 3ds max

Software:
3ds max 2019 | V-Ray Next

A simple way to create a snow material in V-Ray for 3ds max is to combine a VRayFastSSS2 material with a VRayFlakesMtl using a VRayBlendMtl.
The VRayFastSSS2 creates the soft translucent shading for the snow, and the VRayFlakesMtls adds sparkling highlights.

  • Note that depending on the scene and view scale,
    The VRayFlakesMtls ‘flake glossiness’, ‘flake density’ and ‘flake size’ have to be tweaked to achieve the wanted result.

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Cycles render – Using the Normal Blue channel for top side effects

Software:
Blender 2.8 | Cycles Render

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The shading normal‘s Z component can be easily used as a ready-to-use procedural mask for ‘covering effects’ like dust, snow, and if baked, also as a base for particle effects like debris and vegetation.

This simple shading flow example the shading normal‘s Z component, that represents how much the surface is facing upwards is separated , mixed (multiplied) with a noise textured and than fed into a ColorRamp Converter node for fine tuning the resulting mask:

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This is the full shading flow of the snow effect in the image above:

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Customizable Photo-realistic Car-paint shader for Cycles

Software:
Blender 2.8 | Cycles Render

CGL Car Paint Presets Pack 1.0 is a highly customizable photo-realistic car-paint shader I developed for Blender & the Cycles render engine.
The shader has built-in realistic effects like color blending, metallic flakes, clear-coat etc.
And ships with 32 ready-to-use real world car paint material presets.

CGL Car Paint Presets Pack 1.0 is available on Blender Market:
https://www.blendermarket.com/products/cg-lion-car-paint-presets-pack-1

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Related posts:
Realistic Spotlights for Blender & Cycles
Complex Fresnel texture for Cycles
Optimized Architectural Glazing Shader for Cycles
Procedural Wood Shader for Cycles

V-Ray Next’s PBR’ness

Software:
3ds max 2019 | V-Ray Next

A quick test of V-Ray Next‘s PBR workflow,
Namely designing materials while previewing them using V-Ray,
Defining the material properties using the new (to V-Ray) Metalness attribute, and using Roughness rather than Glossiness, shows good results IMO.

Results are generally consistent through Blender & Cycles, Maya & Arnold, and UE4.

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Related Posts:

  1. V-Ray Next – Metalness
  2. Metal In UE4
  3. Fresnel Reflections

IES Lighting in CG

IES stands for Illuminating Engineering Society, it is the organization responsible for creating and maintaining industrial standards for design and manufacturing of artificial light sources.

In 3D rendering, an IES file or “photo-metric file” is a text file containing a photometric description of a light source’s beam spread , pattern and intensity, allowing for faithful depiction of the light source in 3D renders.
Most modern 3D rendering software support IES lights, that is allow loading IES files into the software and lighting the 3D scene using the light source described in the IES file.

Lighting manufacturers make measurements of their light fixture model’s physical light output and create IES files available for download on their websites.
This allows architects, lighting designers, and interior designers to download the files and realistically visualize the light sources effect on their projects.

CG artists use IES lights to add realistic spotlight beam patterns to their renderings and animations, such that can’t be created using regular simple 3D light sources.

Examples of IES lights rendered with V-Ray for 3ds max:

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Related:
Understanding the photometric light measurement units
IES Spotlights for Blender & Cycles