Indigo Renderer 4
Multi-GPU rendering performance. Indigo Quality.
Interior by bubs

After an intensive period of development and beta testing, Glare Technologies is proud to announce a revolution in rendering performance and workflow with the Stable release of Indigo 4.0.

What's new?

Brand new multi-GPU engine

Indigo's OpenCL-based GPU engine provides industry leading performance on Nvidia and AMD graphics cards, and on all major operating systems. With a modern GPU, it's approximately 10x faster than the high performance CPU core of Indigo 3.8.

What's more, this performance benefit scales with multiple GPUs in a single computer and multiple computers on a network. Simply add more cards and get the horsepower to quickly render incredible 4K images and animations.

RGB colour curves

RGB colour response curves are a great way to tweak the raw image to get photographic effects. Doing this with Indigo's native RGB curves means it's done in extremely high precision, and doesn't need to be repeatedly added in post-process for several renders.

Fast, flexible region rendering

Region rendering is now a snappy and interactive experience. After enabling it, simply drag over desired area and it'll start rendering. The user can render multiple regions at once by shift + dragging, and enable a transparent background with a single checkbox.


A simple, efficient and realistic material type for creating SSS materials such as skin, plastics and much more.

FastSSS offers various parameters to vary the surface's structure and reflective properties using textures, with a fast and powerful scattering medium below it.

Material preview window

Indigo 4 features a highly customisable material preview window for tweaking the scene materials in a neutral lighting environment. There are multiple sample objects available, and the user can change resolution and render quality of the preview.

Sequence overrides

An useful new tool for rendering batches of images and animations, the render queue overrides allows you to change render settings for all the frames in the queue, on the fly.

Light layer improvements

Light layers are fully supported on GPU. A nifty new feature is the thumbnail to each light layer, making it easier to find a particular layer you're looking for in the stack.

Other additions include the possibility to assign a light source to a light layer directly in Indigo GUI, as well as adding new layers.

Aperture controls

Render the perfect bokeh by controlling the aperture shape with Indigo's generated aperture, or add your own aperture maps. Cover the lens with custom obstacle maps to create beautiful flare effects.

Contribution clamping

A simple, user friendly parameter to eliminate fireflies.

GPU - adaptive resolution

Viewport res adapts when needed, to ensure good realtime performance.

Adjustable light sampling

Optionally change the processing power dedicated to a particular light source.

Filmic tone mapping

Tone mapping with a natural feel and high dynamic range

Measured BDRF support

Indigo now supports rendering of measured BDRF materials.

Improved Subdiv & Disp

Subdivision and displacement has been greatly optimised and improved.

Faster CPU rendering

CPU rendering, MLT and tone-mapping have been optimised.

Trackball navigation

A useful and intuitive new way to move around your scene.

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