Nvidia Iray

Simulate Your Reality

NVIDIA® Iray® is an intuitive physically based rendering technology that generates photorealistic imagery for interactive and batch rendering workflows. Leveraging AI denoising, CUDA®, NVIDIA OptiX, and Material Definition Language (MDL), Iray delivers world-class performance and impeccable visuals—in record time—when paired with the newest NVIDIA RTX-based hardware.

Using the Latest NVIDIA Technology

The latest version of Iray adds support for RTX, which includes dedicated ray-tracing-acceleration hardware support (RT Cores) and an advanced acceleration structure to enable real-time ray tracing in your graphics applications.

SOLIDWORKS Visualize render


In the 2019 release of the Iray SDK, all render modes utilize NVIDIA RTX technology. In combination with AI denoising, this enables you to create photorealistic rendering in seconds instead of minutes.

AI Denoising

Using Tensor Cores on the newest NVIDIA hardware brings the power of deep learning to both final-frame and interactive photorealistic renderings. This unique capability speeds the completion of final images and smooths interactive rendering for a more rapid understanding of your scene’s composition and lighting.

Interactive image showing an image with AI denoising on and off
Image of NVIDIA Materials Definition Language

NVIDIA Material Definition Language

NVIDIA Material Definition Language (MDL) defines the properties of materials, ranging from the color of surfaces to their reflection or refraction properties to the light emission of surfaces. They even include additional surface geometric properties that are not commonly modeled in the primary geometric description of surfaces, such as cut-outs, displacements, or bump maps.

Multi-GPU and Multi-Machine Setup

Iray supports any number or combination of GPUs and CPUs running within the same machine and gives you control over which ones are being used for rendering. This makes multi-GPU systems the preferred choice for Iray applications, even on cloud-based systems.

Multi-GPU and Multi-Machine Setup

NVIDIA Iray Features

NVIDIA is continually evolving the Iray feature set to improve the physically based 3D and VR rendering workflows of designers and digital artists.

  • Lighting
  • Simulation
  • Advanced
  • Camera
  • Materials
  • Compositing

Light Path Expressions

Separation of different types of light paths into different frame buffers.

Emissive Geometry

Realistic, physically-based lighting model which produces desirable effects, such as soft shadows; simple and natural to set up.

Luminance Distribution

Render color coded image to determine luminance.


Rendering algorithms which can simulate very complex light paths, such as those which create caustics.

Spectral Rendering

Full spectral rendering including lights, textures and output.

OpenVDB Support

Render any OpenVDB file created in 3rd party applications.

Measured Materials

Easy drop in usage of measured materials via MDL.

Photometric Lights

Realistic lighting based on measured data.


Memory savings, and immediate updates of animated objects.

Rounded Corners

Show highlights even if chamfers or filets are not explicitly modelled.

Section Planes

Multiple cross section planes, optionally closed with caps.


Place multiple double sided stickers on objects.

Depth of Field

Efficient implementation of depth-of-field, optimized for each rendering mode.

Motion Blur

Provides an idea of motion in still images, and of fluidity in rendered animations.

Stereo Viewing

Separate camera settings for right and left eye to achieve a 3D stereo output.

Panoramic Snapshots

Render out cylindrical or spherical maps.


Render spline based fur/hair geometry with MDL based material description.

Volume Rendering

Simulation of interactions that occur within a volume.

Subsurface Scattering

Simulation of material interactions that occur below the surface.


Easy access to hundreds of verified  materials with high quality textures.

Matte Objects

Matte objects can be defined as stand-ins for already existing elements in the environment or backplate.

AOV Output

Support for the output of buffers which store various additional image information.

Line/Toon Renderer

Render any scene in a toon and/or hidden line style.


Post process to add bloom and glare.

How to Get Iray

Image created using Iray plug-in

Iray Plug-Ins

Several integration partners have already created state-of-the-art integrations that give you access to Iray within these popular 3D content creation applications: Autodesk Maya, Autodesk 3ds Max, and McNeel Rhinoceros.

Image created using SOLIDWORKS Visualize with Iray SDK integration

Iray SDK Integration

NVIDIA Iray is designed for seamless integration into any application with the need for easy-to-use but convincing rendering. The Iray SDK is available through our partners who provide the professional support you may need during your integration phase.

Software Applications with Iray Integrated

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