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Super Cool Rain & Water Effect Experiments With jQuery

Created 3 years ago   Views 13351   downloads 3109    Author tympanus
Super Cool Rain & Water Effect Experiments With jQuery
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Some experimental rain and water drop effects made with WebGL and shown in different demo scenarios.

We'll share some WebGL experiments with you. The idea is to create a very realistic looking rain effect and put it in different scenarios. In this article, we’ll give an overview of the general tricks and techniques used to make this effect.

Getting Started

If we want to make an effect based on the real world, the first step is to dissect how it actually looks, so we can make it look convincing.
If you look up pictures of water drops on a window in detail (or, of course, observed them in real life already), you will notice that, due to refraction, the raindrops appear to turn the image behind them upside down.

You’ll also see that drops that are close to each other get merged – and if it gets past a certain size, it falls down, leaving a small trail.
To simulate this behavior, we’ll have to render a lot of drops, and update the refraction on them on every frame, and do all this with a decent frame rate, we’ll need a pretty good performance – so, to be able to use hardware accelerated graphics, we’ll use WebGL.


WebGL is a JavaScript API for rendering 2D and 3D graphics, allowing the use of the GPU for better performance. It is based on OpenGL ES, and the shaders aren’t written in JS at all, but rather in a language called GLSL.

All in all, that makes it look difficult to use if you’re coming from exclusively web development — it’s not only a new language, but new concepts as well — but once you grasp some key concepts it will become much easier.

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Tag: sildeshow