how to do transparent glass with corona renderer

3) In intense light, the 'shadow' from the glass is colored in the third tint. 2) Objects behind glass have a different tint than the first one. Reference analysisĪnalyzing the references above, we can note that there are only 4 main observable properties that are typical for most examples: 1) Objects in glass reflection have a color tint. With this approach, it is very important to have at hand as many references as possible of what we need to recreate, so when you work with an object with such elements, be sure to request references for a specific type of coating (film name, manufacturer's website, etc.). Corona Renderer simply doesn't have the proper shaders to mimic the nuances of thin-film optics.Īnd since we cannot use a reliable model, we will imitate obvious properties, because our viewers will perceive the result empirically. The specific type of production does not matter to us, since we will not be able to completely physically recreate (in a form suitable for production) any of them. Technically, this is either glass with a multi-layer coating of metal oxides, where each layer has its own precisely calculated IOR and thickness, or glass covered with a special semi-mirror film, which gives the desired effect. In simple terms, the substance changes color in response to lighting conditions / the position of the observer. Since absorption also depends on the wavelength, dichroic substances turn out to be differently colored when observed in different directions, hence the name (from the Greek δίχροος - two-color)

Dichroism is the various absorption of light by an anisotropic substance depending on its polarization (absorption anisotropy). To begin with, let's deal with the very concept of dichroism. In this article, I will not cover all my attempts, I will focus only on what really worked for me (even if it may not seem very logical to you) and what I myself will use in the future when solving similar tasks. In the course of my little 'research' I tried all sorts of options for creating such a shader, trying to implement various scenarios from references. Sooner or later, almost all visualizers are faced with the need to create such materials, such glass is often used in the design of modern offices, it is also used to make stained-glass windows, decor and installations for interiors.

Dichroic glass in Corona Renderer (EN) JDichroic glass in Corona Renderer in text format, we'll talk about dichroic glass and how to simulate it in our photorealistic renderings without too much headache (well, maybe a little).

How to do transparent glass with corona renderer