Intel announced today that it has been working with Funcom to enhance the visual effects in its Windows* and Android* versions of LEGO* Minifigures Online, a fun-packed online game. The companies used the unique pixel synchronization capabilities of Intel® Iris™ graphics to enable more realistic smoke, clouds, and shadows. The game can also run in a low power mode extending play time by more than 80% when running on Intel devices.
We introduce adaptive volumetric shadow maps (AVSM), a real-time shadow algorithm that supports high-quality shadowing from dynamic volumetric media such as hair and smoke. The key contribution of AVSM is the introduction of a streaming simplification algorithm that generates an accurate volumetric light attenuation function using a small fixed memory footprint. This compression strategy leads to high performance because the visibility data can remain in on-chip memory during simplification and can be efficiently sampled during rendering. We demonstrate that AVSM compression closely approximates the ground-truth correct solution and performs competitively to existing real-time rendering techniques while providing higher quality volumetric shadows.