DL-Instant is a fast simulation software of daylit ambiances for architecture and urban projects. It uses a ray-tracing engine called Embree developed by Intel and adapted by French computing laboratory Gaspard Monge and De Luminæ.
It allows as soon as the conception phase to study natural light directly from a SketchUp model.
DL-Instant is a module of DL-light suite and it shares the same general philosophy: " Use the most sophisticated technical tools and hide complexity to give to the user, as early as possible, valid information and chart inside their conception tool. "
3D rendering tools generally aim to generate the nicest possible images, and provide a realism that brings in the user's subjectivity.
On the oppposite, DL-Instant focuses on the scientific validity and fiability of natural light distribution on the model.
We validate the quality of DL-Instant approach by comparison with Radiance imagine system.
Radiance ray-tracing engine is certainly the most reliable platform to calculate quality luminance, illuminance and high-quality images in Daylighting.
In order to validate DL-Instant, we systematically compare our results with those of Radiance generated images. Below is a set of examples to test how DL-Instant distributes natural light on a test scene.
That scene has been designed to ensure multiple boucing accross several materials, various shapes, various sizes.
These images are luminance renderings, hence the values expressed in cd/m². The same validations have been performed on illuminance renderings, hence in Lux.