GPU Pro 5

3. Volumetric Light Effects in Killzone: Shadow Fall 137

Slice index Depth in meters

0 0.0

1 0.57

2 2.28

3 5.12

··· ···

13 96.14

14 111.50

15 128.0

Tab l e 3 . 1. Depths for depth slices.

The equation calculates the depth (d) for each slice index (i). N defines the

number of depth slices and R defines the depth range we want to cover. C

defines the curvature of the function. C =1.0 will result in depth slices evenly

distributed across the entire depth range. A higher value of C will move slices

near the camera closer to each other and will spread distant slices farther apart.

We use C =2.0 in our implementation to get a nice distribution. Table 3.1 and

Figure