Simplified low-precision ray intersection through accelerated hierarchy structure precomputation

A processing device for rendering objects in a scene using ray tracing, the processing device comprising:

• memory;
• and
• a processor configured to:
• during a build time:
• generate an accelerated hierarchy structure comprising data representing an approximate volume bounding a group of geometric shapes representing the objects in the scene and data representing the geometric shapes;
• and
• generate additional data to transform rays, to be cast in the scene from a high precision space to a low precision space, wherein the additional data is different from the data representing the approximate volume;
• and
• during a render time occurring after the build time:
• perform ray intersection tests, using the additional data generated during the build time, for the rays in the scene;
• and
• render the scene based on the ray intersection tests.

A non-transitory computer readable medium comprising instructions thereon for causing a computer to execute a method for rendering objects in a scene using ray tracing, the instructions comprising:

• during a build time:
• generating an accelerated hierarchy structure comprising data representing an approximate volume bounding a group of geometric shapes representing the objects in the scene and data representing the geometric shapes;
• and
• generating additional data to transform rays, to be cast in the scene from a high precision space to a low precision space, wherein the additional data is different from the data representing the approximate volume;
• and
• during a render time occurring after the build time:
• performing ray intersection tests, using the additional data generated during the build time, for the rays in the scene;
• and
• rendering the scene based on the ray intersection tests.