Thea Render Features

Thea Render is the most versatile renderer featuring state-of-the-art unbiasedbiased and GPUengines. All the engines operate within the same framework and switching from one to another is just a click away. Check out the supported features per engine.



With our engine running on both the GPU+CPU, interactive photorealistic rendering was never better.


The unbiased core of Thea produces the most accurate results and stunning photorealistic images.


When it comes to faster and higher quality rendering or walkthrough animations, the biased engine is the real deal.



High Accuracy & Performance

In Thea Render, we introduced innovative techniques and algorithmic optimizations to achieve superior performance. All possible paths of lighting transfer are explored, delivering the highest accuracy.

Light Simulation

A strong mathematical framework that has led to a very robust unbiased core. It can be also considered as a light simulation tool, performing calculations in the full visible spectral space and including advanced phenomena like volumetric scattering and spectral 



Zero Setup Time

One of the great advantages of using the unbiased core is that no effort is needed to set up the engine. Realistic results are produced without any artifacts. This way, the artist and designer can focus exclusively on bringing their ideas to life, without fiddling with any engine parameters.

Unique Material Editor

The material system with Physically Based material primitives and Advanced Layering System is at the heart of the render engine. These features lead to the most realistic and convincing renders.


Fast Interactive Rendering

Presto is great fun to work with, especially since you can get immediate feedback with production quality due to its fast, interactive response.



Millions of instanced polygons can be rendered without an issue due to our geometric compression techniques. And even if scene cannot fit in GPU, Presto can still run entirely on the CPU.


Volumetrics & SSS

Participating media and Sub-Surface Scattering are resolved with full accuracy utilizing our optimized volumetric scattering techniques.



There are two denoising methods to choose from. NVIDIA® OptiX™ delivers fast unsurpassed denoised renders. And in case that NVIDIA GPU graphic card is not available our built-in denoiser can still be used to accelerate production rendering.



Split Frame

Systems with multiple GPUs can use the Split Frame option to vertically divide the rendered image into as many parts as there are devices on the machine, for faster interactive refresh rate.


Custom Component Evaluation

Custom Material and Light Evaluation allows the user to select which components (such as Diffuse, Translucent, Reflectance, Transmittance, and SSS) will be evaluated for a given material and light, thus removing unwanted contributions and accelerating render times.

Back-Face Material

A separate material can be assigned to the back face of a surface. This is very useful for models without thickness like labels, leaves, etc.


Tone Mapping

Two new Tone Mapping operators have been added in Thea Render. Filmic allows the user to have complete control over Highlights and Shadows while Reinhard provides a robust way to automatically compress high dynamic range renders.


Resume/Merge Render

The user can stop a rendering and resume later without losing any progress. This is ideal when resources are limited or render job needs to be transferred to other workstations.


AMD Open CL Support

Support for AMD Graphic Cards rendering has been added through OpenCL. Please note that this feature is Windows only and under continuous improvements.


More features…

  • Linearized Roughness
  • Blackbody & Full Spectral Color support for Presto
  • IOR sampled files support for Presto
  • Adaptation for many light sources
  • Optimized GPU Kernels
  • Interactive Position Updates

Cuda 9 Support

Thea Render supports Cuda 9 making it possible to use High-End GPUs like Titan-V.


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