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Light Engine releases Light Tracer Render 2.3 | CGBucket

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Originally posted on 5 November 2021. Scroll down for news of the Light Tracer Render 2.3 update.

Light Engine has released Light Tracer Render 2.0, the latest version of its physically based GPU renderer, available as a both commercial product for Windows and macOS, and as a free browser-based service.

The update adds support for IES lights, mesh lights, transparent shadows, and a new caustic mode; adds shadow and reflection catchers for product renders; and reworks the software’s handling of coated materials.

A phyically based GPU ray tracer for web and desktop
First released in 2019 as an experimental browser-based renderer, and pitched as the “world’s first physically based GPU renderer for web”, Light Tracer Render is an unbiased GPU ray tracer.

Over the past two years, it has acquired a standalone desktop edition, which runs on Windows and macOS, and grown steadily in functionality, particularly for architectural and product visualisation.

Light Tracer Render imports models in standard 3D formats including OBJ, FBX, Collada and glTF, and CAD data in STEP/IGES format and Rhino’s 3DM format.

The software supports the Disney Principled material model widely used in other DCC software, and comes with a library of over 300 readymade PBR materials.

Although initially designed for HDRI-based lighting, it is increasingly supporting other lighting workflows. Render features include render passes, post effects, filmic tonemapping, and CPU and GPU denoising.

Being based on WebGL 2.0, the software is hardware-agnostic, working with both AMD and Nvidia GPUs: Light Engine says that it will run on “almost on any GPU produced after 2012-2013”.

New in version 2.0: IES and mesh lights, shadow and reflection catchers, and accurate caustics
Key changes in Light Tracer Render 2.0 include support for IES and mesh lights, increasing its usability in architectural visualisation workflows.

For product visualisation, the update introduces shadow and reflection catchers, to help integrate rendered 3D objects into photographic backplates or solid-colour backgrounds.

Other changes include a new mode for rendering caustics effects based on path guiding, and better handling of shadows cast by transparent and translucent objects, as discussed in this blog post.

Handling of coated materials like car paint and varnished wood has also been reworked, with the old clear coat model replaced by a new physically correct layered model.

Workflow improvements include the options to store and switch between camera views; to hide objects from the render camera, but allow them to continue to contribute to scene illumination; and a new modelling widget for adding 3D primitives to a scene, primarily intended for mesh lights.


Updated 24 December 2021: Light Engine has released Light Tracer Render 2.2.

New features in the update include a physical sun and sky system based on the Hosek-Wilkie model, also supported in render engines like OctaneRender and Blender’s Cycles renderer.

Light Tracer Render also now supports PBR materials following the specular-glossiness workflow, as well as the more common metallic-roughness workflow, automatically converting parameters on import.

In addition, the update adds support for material layers and a new physically plausible bloom post effect.


Updated 5 March 2022: Light Engine has released Light Tracer Render 2.3.

The update reworks the software’s animation toolset, with users now able to loop or retime imported animation tracks from a dedicated Animation tab, or apply readymade camera animations.

Users can also now import and export skeletal animations in glTF format, as well as FBX format.

In addition, it is now possible to import models in PLY format and SketchUp’s SKP format; and to import vertex colour data – for example, surface colours from ZBrush’s PolyPaint toolset – in glTF and PLY files.

Other changes include new built-in libraries of studio light set-ups and PBR materials – the latter from online CC0 material library ambientCG – and a new Color Correction widget for grading rendered output.

Pricing and system requirements
The desktop version of Light Tracer Render 2.3 is available for Windows 10+ and macOS 10.15+. New perpetual floating licences cost $99; rental costs $9/month or $84/year $72/year.

The online version is free and works in any browser that supports WebGL 2.0: Light Engine recommends Chromium-based browsers like Chrome or Edge.

Read more about the new features in Light Tracer Render 2.3 on Light Engine’s blog

Read more about the new features in Light Tracer Render 2.0 on Light Engine’s blog

Read more about Light Tracer Render on the product website

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