internal void UpdateSettings(PostProcessLayer postProcessLayer)
{
var volumeTrigger = postProcessLayer.volumeTrigger;
if (volumeTrigger == null)
{
return;
}
// Reset to base state
postProcessLayer.OverrideSettings(m_BaseSettings, 1f);
var volumeLayer = postProcessLayer.volumeLayer;
int mask = volumeLayer.value;
// Optimize me
for (int i = 0; i < k_MaxLayerCount; i++)
{
// Skip layers not in the mask
if ((mask & (1 << i)) == 0)
{
continue;
}
// Skip empty layers
var volumes = m_Volumes[i];
if (volumes == null)
{
return;
}
// Sort the volume list if needed
if (m_SortNeeded[i])
{
SortByPriority(volumes);
m_SortNeeded[i] = false;
}
// Traverse all volumes
var triggerPos = volumeTrigger.position;
foreach (var volume in volumes)
{
if (!volume.enabled)
{
continue;
}
// Global volume always have influence
if (volume.isGlobal)
{
postProcessLayer.OverrideSettings(volume.settings, 1f);
continue;
}
// If volume isn't global and has no collider, skip it as it's useless
//var colliders = volume.colliders;
var colliders = m_TempColliders;
volume.GetComponents(colliders);
if (colliders.Count == 0)
{
continue;
}
// Find closest distance to volume, 0 means it's inside it
float closestDistanceSqr = float.PositiveInfinity;
foreach (var collider in colliders)
{
if (!collider.enabled)
{
continue;
}
var closestPoint = collider.ClosestPoint(triggerPos); // 5.6-only API
var d = ((closestPoint - triggerPos) / 2).sqrMagnitude;
if (d < closestDistanceSqr)
{
closestDistanceSqr = d;
}
}
colliders.Clear();
float blendDistSqr = volume.blendDistance * volume.blendDistance;
// Volume has no influence, ignore it
// Note: Volume doesn't do anything when `closestDistanceSqr = blendDistSqr` but
// we can't use a >= comparison as blendDistSqr could be set to 0 in which
// case volume would have total influence
if (closestDistanceSqr > blendDistSqr)
{
continue;
}
// Volume has influence
float interpFactor = 1f;
if (blendDistSqr > 0f)
{
interpFactor = 1f - (closestDistanceSqr / blendDistSqr);
}
// No need to clamp01 the interpolation factor as it'll always be in [0;1[ range
postProcessLayer.OverrideSettings(volume.settings, interpFactor);
}
}
}
// Gets a list of all volumes currently affecting the given layer. Results aren't sorted.
// Volume with weight of 0 or no profile set will be skipped. Results list won't be cleared.
public void GetActiveVolumes(PostProcessLayer layer, List <PostProcessVolume> results)
{
// If no trigger is set, only global volumes will have influence
int mask = layer.volumeLayer.value;
var volumeTrigger = layer.volumeTrigger;
bool onlyGlobal = volumeTrigger == null;
var triggerPos = onlyGlobal ? Vector3.zero : volumeTrigger.position;
for (int i = 0; i < k_MaxLayerCount; i++)
{
// Skip layers not in the mask
if ((mask & (1 << i)) == 0)
{
continue;
}
// Skip empty layers
var volumes = m_Volumes[i];
if (volumes == null)
{
continue;
}
// Traverse all volumes
foreach (var volume in volumes)
{
// Skip disabled volumes and volumes without any data or weight
if (!volume.enabled || volume.profileRef == null || volume.weight <= 0f)
{
continue;
}
// Global volume always have influence
if (volume.isGlobal)
{
results.Add(volume);
continue;
}
if (onlyGlobal)
{
continue;
}
// If volume isn't global and has no collider, skip it as it's useless
var colliders = m_TempColliders;
volume.GetComponents(colliders);
if (colliders.Count == 0)
{
continue;
}
// Find closest distance to volume, 0 means it's inside it
float closestDistanceSqr = float.PositiveInfinity;
foreach (var collider in colliders)
{
if (!collider.enabled)
{
continue;
}
var closestPoint = collider.ClosestPoint(triggerPos); // 5.6-only API
var d = ((closestPoint - triggerPos) / 2f).sqrMagnitude;
if (d < closestDistanceSqr)
{
closestDistanceSqr = d;
}
}
colliders.Clear();
float blendDistSqr = volume.blendDistance * volume.blendDistance;
// Check for influence
if (closestDistanceSqr <= blendDistSqr)
{
results.Add(volume);
}
}
}
}
