protected override void AllocateShadows(FrameId frameId, VisibleLight[] lights, uint totalGranted, ref ShadowRequestVector grantedRequests, ref ShadowIndicesVector shadowIndices, ref ShadowDataVector shadowDatas, ref ShadowPayloadVector shadowmapPayload)
{
ShadowData sd = new ShadowData();
shadowDatas.Reserve(totalGranted);
shadowIndices.Reserve(grantedRequests.Count());
for (uint i = 0, cnt = grantedRequests.Count(); i < cnt; ++i)
{
VisibleLight vl = lights[grantedRequests[i].index];
Light l = vl.light;
AdditionalLightData ald = l.GetComponent <AdditionalLightData>();
// set light specific values that are not related to the shadowmap
GPUShadowType shadowtype;
ShadowUtils.MapLightType(ald.archetype, vl.lightType, out sd.lightType, out shadowtype);
sd.bias = l.shadowBias;
sd.quality = 0;
shadowIndices.AddUnchecked((int)shadowDatas.Count());
int smidx = 0;
while (smidx < k_MaxShadowmapPerType)
{
if (m_ShadowmapsPerType[(int)shadowtype, smidx].Reserve(frameId, ref sd, grantedRequests[i], (uint)ald.shadowResolution, (uint)ald.shadowResolution, ref shadowDatas, ref shadowmapPayload, lights))
{
break;
}
smidx++;
}
if (smidx == k_MaxShadowmapPerType)
{
throw new ArgumentException("The requested shadows do not fit into any shadowmap.");
}
}
// final step for shadowmaps that only gather data during the previous loop and do the actual allocation once they have all the data.
foreach (var sm in m_Shadowmaps)
{
if (!sm.ReserveFinalize(frameId, ref shadowDatas, ref shadowmapPayload))
{
throw new ArgumentException("Shadow allocation failed in the ReserveFinalize step.");
}
}
}
protected override void PruneShadowCasters(Camera camera, VisibleLight[] lights, ref VectorArray <int> shadowRequests, ref ShadowRequestVector requestsGranted, out uint totalRequestCount)
{
Debug.Assert(shadowRequests.Count() > 0);
// at this point the array is sorted in order of some importance determined by the prioritize function
requestsGranted.Reserve(shadowRequests.Count());
totalRequestCount = 0;
ShadowmapBase.ShadowRequest sreq = new ShadowmapBase.ShadowRequest();
uint totalSlots = ResetMaxShadows();
// there's a 1:1 mapping between the index in the shadowRequests array and the element in requestsGranted at the same index.
// if the prune function skips requests it must make sure that the array is still compact
m_TmpSortKeys.Reset(shadowRequests.Count());
for (uint i = 0, count = shadowRequests.Count(); i < count && totalSlots > 0; ++i)
{
int requestIdx = shadowRequests[i];
VisibleLight vl = lights[requestIdx];
bool add = false;
int facecount = 0;
GPUShadowType shadowType = GPUShadowType.Point;
switch (vl.lightType)
{
case LightType.Directional: add = m_MaxShadows[(int)GPUShadowType.Directional, 0]-- >= 0; shadowType = GPUShadowType.Directional; facecount = m_ShadowSettings.directionalLightCascadeCount; break;
case LightType.Point: add = m_MaxShadows[(int)GPUShadowType.Point, 0]-- >= 0; shadowType = GPUShadowType.Point; facecount = 6; break;
case LightType.Spot: add = m_MaxShadows[(int)GPUShadowType.Spot, 0]-- >= 0; shadowType = GPUShadowType.Spot; facecount = 1; break;
}
if (add)
{
sreq.instanceId = vl.light.GetInstanceID();
sreq.index = (uint)requestIdx;
sreq.facemask = (uint)(1 << facecount) - 1;
sreq.shadowType = shadowType;
totalRequestCount += (uint)facecount;
requestsGranted.AddUnchecked(sreq);
totalSlots--;
}
else
{
m_TmpSortKeys.AddUnchecked(requestIdx);
}
}
// make sure that shadowRequests contains all light indices that are going to cast a shadow first, then the rest
shadowRequests.Reset();
requestsGranted.ExtractTo(ref shadowRequests, (ShadowmapBase.ShadowRequest request) => { return((int)request.index); });
m_TmpSortKeys.ExtractTo(ref shadowRequests, (long idx) => { return((int)idx); });
}
