GPU Pro 5

424 VI Compute

1

st

pass

Ray

Marching

Intersection

Testing

Intersection found,

ray terminated

Intersection found,

ray terminated

2

nd

pass

3

rd

pass

Figure 2.5. Three-pass intersection testing. Each pass builds a different partial ray grid

(ray links are marked in the color of the rays). The red ray intersects a triangle in the

first pass and is no longer considered afterward (grayed-out). The voxel representation

of the scene is underlaid in grey to improve readability.

2.4 Implementation

In the following, we provide details on the implementation of our method. While

some remarks may be specific to DirectX 11, everything that is required has its

counterparts in other ...