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Diffstat (limited to 'intern/cycles/kernel/svm')
| -rw-r--r-- | intern/cycles/kernel/svm/svm_voronoi.h | 15 |
1 files changed, 7 insertions, 8 deletions
diff --git a/intern/cycles/kernel/svm/svm_voronoi.h b/intern/cycles/kernel/svm/svm_voronoi.h index f0fc0068fa2..10d17403f65 100644 --- a/intern/cycles/kernel/svm/svm_voronoi.h +++ b/intern/cycles/kernel/svm/svm_voronoi.h @@ -144,14 +144,13 @@ ccl_device void voronoi_distance_to_edge_1d(float w, float randomness, float *ou float cellPosition = floorf(w); float localPosition = w - cellPosition; - float minDistance = 8.0f; - for (int i = -1; i <= 1; i++) { - float cellOffset = i; - float pointPosition = cellOffset + hash_float_to_float(cellPosition + cellOffset) * randomness; - float distanceToPoint = fabsf(pointPosition - localPosition); - minDistance = min(distanceToPoint, minDistance); - } - *outDistance = minDistance; + float midPointPosition = hash_float_to_float(cellPosition) * randomness; + float leftPointPosition = -1.0f + hash_float_to_float(cellPosition - 1.0f) * randomness; + float rightPointPosition = 1.0f + hash_float_to_float(cellPosition + 1.0f) * randomness; + float distanceToMidLeft = fabsf((midPointPosition + leftPointPosition) / 2.0f - localPosition); + float distanceToMidRight = fabsf((midPointPosition + rightPointPosition) / 2.0f - localPosition); + + *outDistance = min(distanceToMidLeft, distanceToMidRight); } ccl_device void voronoi_n_sphere_radius_1d(float w, float randomness, float *outRadius) |