PowerVR Ray Tracing

PowerVR Ray Tracing is a revolutionary technology that enables lightning-fast ray tracing for GPUs and SoCs.

The PowerVR Ray Tracing graphics architecture enables more immersive games and apps with real-life dynamic lighting models that produce advanced lighting effects, dynamic soft shadows, and life-like reflections and transparencies.

PowerVR Ray Tracing provides support for the open standard OpenGL ES™ and Vulkan® APIs, so developers can use ray tracing without extensive new learning.

Ray tracing is a powerful tool that offers an innate understanding of light. Therefore, some effects are more efficiently computed with ray tracing than using state-of-the-art raster techniques.

Furthermore, it is possible to create a hybrid rendering system where an incremental scanline algorithm is used for visibility determination, with PowerVR Ray Tracing selectively added in order to implement specific effects.

PowerVR Ray Tracing features a Scene Hierarchy Generator (SHG) in hardware. This generates a Bounding Volume Hierarchy data structure designed to greatly improve the efficiency of detecting which triangles intersect with which rays.

The Scene Hierarchy Generator splits the scene into a hierarchical tree of bounding boxes – a hierarchical approach that cuts down the number of tests by checking ray box intersections and then drilling down inside it until the correct triangle is located.

Only Imagination has the Scene Hierarchy Generator (SGH) in hardware, which means PowerVR Ray Tracing can support dynamic geometry much more efficiently.

PowerVR also features an optional block called the Ray Coherency Engine. The Coherency Engine finds commonality between rays and then groups them together, increasing efficiency.

PowerVR Ray Tracing’s proven silicon has over 220 associated patents to date, either granted or pending.

The Scene Hierarchy Generator splits the scene into a hierarchical tree of bounding boxes – a hierarchical approach that cuts down the number of tests by checking ray box intersections and then drilling down inside it until the correct triangle is located.

Ray Tracing News from Imagination

Series8XT AR/VR Banner

Imagination Technologies: the ray tracing pioneers

After a period out of the spotlight, ray tracing technology has recently come back into focus, taking up a lot of column inches in the tech press. The primary reason is because graphics cards for the PC gaming market have

ray tracing wizard

Video: ray tracing with the PowerVR Wizard architecture

Imagination is known for its chip IP for mobile devices such as smartphones and tablets and has a strong reputation as a market leader with regards to performance, power and area. Complementing this, Imagination also has IP related to ray