override public bool Reserve(FrameId frameId, ref ShadowData shadowData, ShadowRequest sr, uint[] widths, uint[] heights, ref VectorArray <ShadowData> entries, ref VectorArray <ShadowPayload> payload, VisibleLight[] lights)
{
ShadowData sd = shadowData;
ShadowData dummy = new ShadowData();
if (sr.shadowType != GPUShadowType.Point && sr.shadowType != GPUShadowType.Spot && sr.shadowType != GPUShadowType.Directional)
{
return(false);
}
if (sr.shadowType == GPUShadowType.Directional)
{
for (uint i = 0; i < k_MaxCascadesInShader; ++i)
{
m_TmpSplits[i].Set(0.0f, 0.0f, 0.0f, float.NegativeInfinity);
}
}
Key key;
key.id = sr.instanceId;
key.faceIdx = 0;
key.visibleIdx = (int)sr.index;
key.shadowDataIdx = entries.Count();
uint originalEntryCount = entries.Count();
uint originalPayloadCount = payload.Count();
uint originalActiveEntries = m_ActiveEntriesCount;
uint facecnt = sr.facecount;
uint facemask = sr.facemask;
uint bit = 1;
int resIdx = 0;
entries.Reserve(6);
float nearPlaneOffset = QualitySettings.shadowNearPlaneOffset;
while (facecnt > 0)
{
if ((bit & facemask) != 0)
{
uint width = widths[resIdx];
uint height = heights[resIdx];
uint ceIdx;
if (!Alloc(frameId, key, width, height, out ceIdx, payload))
{
entries.Purge(entries.Count() - originalEntryCount);
payload.Purge(payload.Count() - originalPayloadCount);
uint added = m_ActiveEntriesCount - originalActiveEntries;
for (uint i = originalActiveEntries; i < m_ActiveEntriesCount; ++i)
{
m_EntryCache.Swap(i, m_EntryCache.Count() - i - 1);
}
m_EntryCache.Purge(added, Free);
m_ActiveEntriesCount = originalActiveEntries;
return(false);
}
// read
CachedEntry ce = m_EntryCache[ceIdx];
// modify
Matrix4x4 vp;
if (sr.shadowType == GPUShadowType.Point)
{
vp = ShadowUtils.ExtractPointLightMatrix(lights[sr.index], key.faceIdx, 2.0f, out ce.current.view, out ce.current.proj, out ce.current.lightDir, out ce.current.splitData, m_CullResults, (int)sr.index);
}
else if (sr.shadowType == GPUShadowType.Spot)
{
vp = ShadowUtils.ExtractSpotLightMatrix(lights[sr.index], out ce.current.view, out ce.current.proj, out ce.current.lightDir, out ce.current.splitData);
}
else if (sr.shadowType == GPUShadowType.Directional)
{
vp = ShadowUtils.ExtractDirectionalLightMatrix(lights[sr.index], key.faceIdx, m_CascadeCount, m_CascadeRatios, nearPlaneOffset, width, height, out ce.current.view, out ce.current.proj, out ce.current.lightDir, out ce.current.splitData, m_CullResults, (int)sr.index);
m_TmpSplits[key.faceIdx] = ce.current.splitData.cullingSphere;
m_TmpSplits[key.faceIdx].w *= ce.current.splitData.cullingSphere.w;
}
else
{
vp = Matrix4x4.identity; // should never happen, though
}
// write :(
m_EntryCache[ceIdx] = ce;
sd.worldToShadow = vp.transpose; // apparently we need to transpose matrices that are sent to HLSL
sd.scaleOffset = new Vector4(ce.current.viewport.width * m_WidthRcp, ce.current.viewport.height * m_HeightRcp, ce.current.viewport.x, ce.current.viewport.y);
sd.texelSizeRcp = new Vector2(m_WidthRcp, m_HeightRcp);
sd.PackShadowmapId(m_TexSlot, m_SampSlot, ce.current.slice);
sd.shadowType = sr.shadowType;
sd.payloadOffset = payload.Count();
entries.AddUnchecked(sd);
resIdx++;
facecnt--;
key.shadowDataIdx++;
}
else
{
// we push a dummy face in, otherwise we'd need a mapping from face index to shadowData in the shader as well
entries.AddUnchecked(dummy);
}
key.faceIdx++;
bit <<= 1;
}
if (sr.shadowType == GPUShadowType.Directional)
{
ShadowPayload sp = new ShadowPayload();
payload.Reserve(k_MaxCascadesInShader);
for (uint i = 0; i < k_MaxCascadesInShader; i++)
{
sp.Set(m_TmpSplits[i]);
payload.AddUnchecked(sp);
}
}
return(true);
}