Realtime, volumetric, dynamic clouds are now possible on current games hardware. Available for PC and major console platforms, the Simul Weather SDK is the most advanced and reliable sky system available.

See it working now!

Simul Weather is a C++ library which generates weather system data and updates it in real time. Simul Weather creates volumetric cloud data, and provides realtime access to that data via a lightweight API. The cloud system generates pure volumetric data, it is cross-platform and renderer-independent. The sample applications that come with the SDK show how realtime clouds can be rendered using the generated cloud data, in various graphics API’s.

Features

• Live, realtime volumetric clouds
• Eye-wateringly fast: light on CPU, GPU, and memory.
• Physics-based cloud generation
• Multi-core calculation with Intel® Threading Building Blocks.
• Realtime weather-changes
• Industry-leading time-of-day effects
• Atmospherics for distance fading
• Thunder and lightning
• Clouds you can fly through
• Clouds that mix with the landscape
• Simple C++ API
• Windows and console versions
• Renderer-independent
• Drop-in sample rendering source code and shaders for OpenGL, DirectX, Ogre, OpenSceneGraph
• Works with any 3D API or engine
• Built-in binary and XML data streaming

Simul Weather can generate live, moving, animated skyscapes. The SDK is now available to developers wanting to incorporate realistic live weather in the next generation of games.

For more details, and to evaluate the SDK, contact Simul on enquiries@simul.co.uk.

For licensing information, visit www.simul.co.uk/weather/licensing.

Demo

System requirements: Shader-model 3.0 video card with floating-point texture support (16-bit floats for best performance).

The demo shows how the clouds move and animate as time passes, along with atmospheric effects on the landscape. You can play with wind speed, wind direction, cloud density and a few other factors representative of the API. Vertical sync is disabled in order to show the performance: download.

Simul HDR sky, fast to calculate, fast to render.

3D, moving clouds animate at minimal cost to CPU/GPU.

Volumetric clouds can move between features in the landscape.

HDR support is built-in.

Skies can be recalculated instantly for changes in time, altitude or weather.