public void BeginCull(CullRequest.Set cullRequest)
            {
                Assert.IsNotNull(cullRequest);

                cullRequest.Clear();

                if (m_Material == null)
                {
                    return;
                }
                if (cullRequest.cullingGroup != null)
                {
                    Debug.LogError("Begin/EndCull() called out of sequence for decal projectors.");
                }

                // let the culling group code do some of the heavy lifting for global draw distance
                m_BoundingDistances[0] = DecalSystem.instance.DrawDistance;
                m_NumResults           = 0;
                var cullingGroup = CullingGroupManager.instance.Alloc();

                cullingGroup.targetCamera = instance.CurrentCamera;
                cullingGroup.SetDistanceReferencePoint(cullingGroup.targetCamera.transform.position);
                cullingGroup.SetBoundingDistances(m_BoundingDistances);
                cullingGroup.SetBoundingSpheres(m_BoundingSpheres);
                cullingGroup.SetBoundingSphereCount(m_DecalsCount);

                cullRequest.Initialize(0, cullingGroup);
            }
 public void EndCull(CullRequest.Set request)
 {
     if (m_Material == null)
     {
         return;
     }
     if (request.cullingGroup == null)
     {
         Debug.LogError("Begin/EndCull() called out of sequence for decal projectors.");
     }
     else
     {
         request.Clear();
     }
 }