388 lines
17 KiB
C#
388 lines
17 KiB
C#
|
using System;
|
||
|
|
using UnityEngine.Assertions;
|
||
|
|
using Unity.Collections;
|
||
|
|
using Unity.Jobs;
|
||
|
|
using Unity.Collections.LowLevel.Unsafe;
|
||
|
|
using Unity.Burst;
|
||
|
|
using Unity.Mathematics;
|
||
|
|
|
||
|
|
namespace UnityEngine.Rendering
|
||
|
|
{
|
||
|
|
internal unsafe struct LODGroupData
|
||
|
|
{
|
||
|
|
public const int k_MaxLODLevelsCount = 8;
|
||
|
|
|
||
|
|
public bool valid;
|
||
|
|
public int lodCount;
|
||
|
|
public int rendererCount;
|
||
|
|
public fixed float screenRelativeTransitionHeights[k_MaxLODLevelsCount];
|
||
|
|
public fixed float fadeTransitionWidth[k_MaxLODLevelsCount];
|
||
|
|
}
|
||
|
|
|
||
|
|
internal unsafe struct LODGroupCullingData
|
||
|
|
{
|
||
|
|
public float3 worldSpaceReferencePoint;
|
||
|
|
public int lodCount;
|
||
|
|
public fixed float sqrDistances[LODGroupData.k_MaxLODLevelsCount]; // we use square distance to get rid of a sqrt in gpu culling..
|
||
|
|
public fixed float transitionDistances[LODGroupData.k_MaxLODLevelsCount]; // todo - make this a separate data struct (CPUOnly, as we do not support dithering on GPU..)
|
||
|
|
public float worldSpaceSize;// SpeedTree crossfade.
|
||
|
|
public fixed bool percentageFlags[LODGroupData.k_MaxLODLevelsCount];// SpeedTree crossfade.
|
||
|
|
}
|
||
|
|
|
||
|
|
[BurstCompile(DisableSafetyChecks = true, OptimizeFor = OptimizeFor.Performance)]
|
||
|
|
internal struct UpdateLODGroupTransformJob : IJobParallelFor
|
||
|
|
{
|
||
|
|
public const int k_BatchSize = 256;
|
||
|
|
|
||
|
|
[ReadOnly] public NativeParallelHashMap<int, GPUInstanceIndex> lodGroupDataHash;
|
||
|
|
[ReadOnly] public NativeArray<int> lodGroupIDs;
|
||
|
|
[ReadOnly] public NativeArray<Vector3> worldSpaceReferencePoints;
|
||
|
|
[ReadOnly] public NativeArray<float> worldSpaceSizes;
|
||
|
|
[ReadOnly] public bool requiresGPUUpload;
|
||
|
|
[ReadOnly] public bool supportDitheringCrossFade;
|
||
|
|
|
||
|
|
[NativeDisableContainerSafetyRestriction, NoAlias, ReadOnly] public NativeList<LODGroupData> lodGroupData;
|
||
|
|
|
||
|
|
[NativeDisableContainerSafetyRestriction, NoAlias, WriteOnly] public NativeList<LODGroupCullingData> lodGroupCullingData;
|
||
|
|
|
||
|
|
[NativeDisableUnsafePtrRestriction] public UnsafeAtomicCounter32 atomicUpdateCount;
|
||
|
|
|
||
|
|
public unsafe void Execute(int index)
|
||
|
|
{
|
||
|
|
int lodGroupID = lodGroupIDs[index];
|
||
|
|
|
||
|
|
if (lodGroupDataHash.TryGetValue(lodGroupID, out var lodGroupInstance))
|
||
|
|
{
|
||
|
|
var worldSpaceSize = worldSpaceSizes[index];
|
||
|
|
|
||
|
|
LODGroupData* lodGroup = (LODGroupData*)lodGroupData.GetUnsafePtr() + lodGroupInstance.index;
|
||
|
|
LODGroupCullingData* lodGroupTransformResult = (LODGroupCullingData*)lodGroupCullingData.GetUnsafePtr() + lodGroupInstance.index;
|
||
|
|
lodGroupTransformResult->worldSpaceSize = worldSpaceSize;
|
||
|
|
lodGroupTransformResult->worldSpaceReferencePoint = worldSpaceReferencePoints[index];
|
||
|
|
|
||
|
|
for (int i = 0; i < lodGroup->lodCount; ++i)
|
||
|
|
{
|
||
|
|
float lodHeight = lodGroup->screenRelativeTransitionHeights[i];
|
||
|
|
|
||
|
|
var lodDist = LODGroupRenderingUtils.CalculateLODDistance(lodHeight, worldSpaceSize);
|
||
|
|
lodGroupTransformResult->sqrDistances[i] = lodDist * lodDist;
|
||
|
|
|
||
|
|
if (supportDitheringCrossFade && !lodGroupTransformResult->percentageFlags[i])
|
||
|
|
{
|
||
|
|
float prevLODHeight = i != 0 ? lodGroup->screenRelativeTransitionHeights[i - 1] : 1.0f;
|
||
|
|
float transitionHeight = lodHeight + lodGroup->fadeTransitionWidth[i] * (prevLODHeight - lodHeight);
|
||
|
|
var transitionDistance = lodDist - LODGroupRenderingUtils.CalculateLODDistance(transitionHeight, worldSpaceSize);
|
||
|
|
transitionDistance = Mathf.Max(0.0f, transitionDistance);
|
||
|
|
lodGroupTransformResult->transitionDistances[i] = transitionDistance;
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
lodGroupTransformResult->transitionDistances[i] = 0f;
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
[BurstCompile(DisableSafetyChecks = true, OptimizeFor = OptimizeFor.Performance)]
|
||
|
|
internal unsafe struct AllocateOrGetLODGroupDataInstancesJob : IJob
|
||
|
|
{
|
||
|
|
[ReadOnly] public NativeArray<int> lodGroupsID;
|
||
|
|
|
||
|
|
public NativeList<LODGroupData> lodGroupsData;
|
||
|
|
public NativeList<LODGroupCullingData> lodGroupCullingData;
|
||
|
|
public NativeParallelHashMap<int, GPUInstanceIndex> lodGroupDataHash;
|
||
|
|
public NativeList<GPUInstanceIndex> freeLODGroupDataHandles;
|
||
|
|
|
||
|
|
[WriteOnly] public NativeArray<GPUInstanceIndex> lodGroupInstances;
|
||
|
|
|
||
|
|
[NativeDisableUnsafePtrRestriction] public int* previousRendererCount;
|
||
|
|
|
||
|
|
public void Execute()
|
||
|
|
{
|
||
|
|
int freeHandlesCount = freeLODGroupDataHandles.Length;
|
||
|
|
int lodDataLength = lodGroupsData.Length;
|
||
|
|
|
||
|
|
for (int i = 0; i < lodGroupsID.Length; ++i)
|
||
|
|
{
|
||
|
|
int lodGroupID = lodGroupsID[i];
|
||
|
|
|
||
|
|
if (!lodGroupDataHash.TryGetValue(lodGroupID, out var lodGroupInstance))
|
||
|
|
{
|
||
|
|
if (freeHandlesCount == 0)
|
||
|
|
lodGroupInstance = new GPUInstanceIndex() { index = lodDataLength++ };
|
||
|
|
else
|
||
|
|
lodGroupInstance = freeLODGroupDataHandles[--freeHandlesCount];
|
||
|
|
|
||
|
|
lodGroupDataHash.TryAdd(lodGroupID, lodGroupInstance);
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
*previousRendererCount += lodGroupsData.ElementAt(lodGroupInstance.index).rendererCount;
|
||
|
|
}
|
||
|
|
|
||
|
|
lodGroupInstances[i] = lodGroupInstance;
|
||
|
|
}
|
||
|
|
|
||
|
|
freeLODGroupDataHandles.ResizeUninitialized(freeHandlesCount);
|
||
|
|
lodGroupsData.ResizeUninitialized(lodDataLength);
|
||
|
|
lodGroupCullingData.ResizeUninitialized(lodDataLength);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
[BurstCompile(DisableSafetyChecks = true, OptimizeFor = OptimizeFor.Performance)]
|
||
|
|
internal unsafe struct UpdateLODGroupDataJob : IJobParallelFor
|
||
|
|
{
|
||
|
|
public const int k_BatchSize = 256;
|
||
|
|
|
||
|
|
[ReadOnly] public NativeArray<GPUInstanceIndex> lodGroupInstances;
|
||
|
|
[ReadOnly] public GPUDrivenLODGroupData inputData;
|
||
|
|
[ReadOnly] public bool supportDitheringCrossFade;
|
||
|
|
|
||
|
|
public NativeArray<LODGroupData> lodGroupsData;
|
||
|
|
public NativeArray<LODGroupCullingData> lodGroupsCullingData;
|
||
|
|
|
||
|
|
[NativeDisableUnsafePtrRestriction] public UnsafeAtomicCounter32 rendererCount;
|
||
|
|
|
||
|
|
public void Execute(int index)
|
||
|
|
{
|
||
|
|
var lodGroupInstance = lodGroupInstances[index];
|
||
|
|
var fadeMode = inputData.fadeMode[index];
|
||
|
|
var lodOffset = inputData.lodOffset[index];
|
||
|
|
var lodCount = inputData.lodCount[index];
|
||
|
|
var renderersCount = inputData.renderersCount[index];
|
||
|
|
var worldReferencePoint = inputData.worldSpaceReferencePoint[index];
|
||
|
|
var worldSpaceSize = inputData.worldSpaceSize[index];
|
||
|
|
var lastLODIsBillboard = inputData.lastLODIsBillboard[index];
|
||
|
|
var useDitheringCrossFade = fadeMode != LODFadeMode.None && supportDitheringCrossFade;
|
||
|
|
var useSpeedTreeCrossFade = fadeMode == LODFadeMode.SpeedTree;
|
||
|
|
|
||
|
|
LODGroupData* lodGroupData = (LODGroupData*)lodGroupsData.GetUnsafePtr() + lodGroupInstance.index;
|
||
|
|
LODGroupCullingData* lodGroupCullingData = (LODGroupCullingData*)lodGroupsCullingData.GetUnsafePtr() + lodGroupInstance.index;
|
||
|
|
|
||
|
|
lodGroupData->valid = true;
|
||
|
|
lodGroupData->lodCount = lodCount;
|
||
|
|
lodGroupData->rendererCount = useDitheringCrossFade ? renderersCount : 0;
|
||
|
|
lodGroupCullingData->worldSpaceSize = worldSpaceSize;
|
||
|
|
lodGroupCullingData->worldSpaceReferencePoint = worldReferencePoint;
|
||
|
|
lodGroupCullingData->lodCount = lodCount;
|
||
|
|
|
||
|
|
rendererCount.Add(lodGroupData->rendererCount);
|
||
|
|
|
||
|
|
var crossFadeLODBegin = 0;
|
||
|
|
|
||
|
|
if (useSpeedTreeCrossFade)
|
||
|
|
{
|
||
|
|
var lastLODIndex = lodOffset + (lodCount - 1);
|
||
|
|
var hasBillboardLOD = lodCount > 0 && inputData.lodRenderersCount[lastLODIndex] == 1 && lastLODIsBillboard;
|
||
|
|
|
||
|
|
if (lodCount == 0)
|
||
|
|
crossFadeLODBegin = 0;
|
||
|
|
else if (hasBillboardLOD)
|
||
|
|
crossFadeLODBegin = Math.Max(lodCount, 2) - 2;
|
||
|
|
else
|
||
|
|
crossFadeLODBegin = lodCount - 1;
|
||
|
|
}
|
||
|
|
|
||
|
|
for (int i = 0; i < lodCount; ++i)
|
||
|
|
{
|
||
|
|
var lodIndex = lodOffset + i;
|
||
|
|
var lodHeight = inputData.lodScreenRelativeTransitionHeight[lodIndex];
|
||
|
|
var lodDist = LODGroupRenderingUtils.CalculateLODDistance(lodHeight, worldSpaceSize);
|
||
|
|
|
||
|
|
lodGroupData->screenRelativeTransitionHeights[i] = lodHeight;
|
||
|
|
lodGroupData->fadeTransitionWidth[i] = 0.0f;
|
||
|
|
lodGroupCullingData->sqrDistances[i] = lodDist * lodDist;
|
||
|
|
lodGroupCullingData->percentageFlags[i] = false;
|
||
|
|
lodGroupCullingData->transitionDistances[i] = 0.0f;
|
||
|
|
|
||
|
|
if (useSpeedTreeCrossFade && i < crossFadeLODBegin)
|
||
|
|
{
|
||
|
|
lodGroupCullingData->percentageFlags[i] = true;
|
||
|
|
}
|
||
|
|
else if (useDitheringCrossFade && i >= crossFadeLODBegin)
|
||
|
|
{
|
||
|
|
var fadeTransitionWidth = inputData.lodFadeTransitionWidth[lodIndex];
|
||
|
|
var prevLODHeight = i != 0 ? inputData.lodScreenRelativeTransitionHeight[lodIndex - 1] : 1.0f;
|
||
|
|
var transitionHeight = lodHeight + fadeTransitionWidth * (prevLODHeight - lodHeight);
|
||
|
|
var transitionDistance = lodDist - LODGroupRenderingUtils.CalculateLODDistance(transitionHeight, worldSpaceSize);
|
||
|
|
transitionDistance = Mathf.Max(0.0f, transitionDistance);
|
||
|
|
|
||
|
|
lodGroupData->fadeTransitionWidth[i] = fadeTransitionWidth;
|
||
|
|
lodGroupCullingData->transitionDistances[i] = transitionDistance;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
[BurstCompile(DisableSafetyChecks = true, OptimizeFor = OptimizeFor.Performance)]
|
||
|
|
internal unsafe struct FreeLODGroupDataJob : IJob
|
||
|
|
{
|
||
|
|
[ReadOnly] public NativeArray<int> destroyedLODGroupsID;
|
||
|
|
|
||
|
|
public NativeList<LODGroupData> lodGroupsData;
|
||
|
|
public NativeParallelHashMap<int, GPUInstanceIndex> lodGroupDataHash;
|
||
|
|
public NativeList<GPUInstanceIndex> freeLODGroupDataHandles;
|
||
|
|
|
||
|
|
[NativeDisableUnsafePtrRestriction] public int* removedRendererCount;
|
||
|
|
|
||
|
|
public void Execute()
|
||
|
|
{
|
||
|
|
foreach (int lodGroupID in destroyedLODGroupsID)
|
||
|
|
{
|
||
|
|
if (lodGroupDataHash.TryGetValue(lodGroupID, out var lodGroupInstance))
|
||
|
|
{
|
||
|
|
Assert.IsTrue(lodGroupInstance.valid);
|
||
|
|
|
||
|
|
lodGroupDataHash.Remove(lodGroupID);
|
||
|
|
freeLODGroupDataHandles.Add(lodGroupInstance);
|
||
|
|
|
||
|
|
ref LODGroupData lodGroupData = ref lodGroupsData.ElementAt(lodGroupInstance.index);
|
||
|
|
Assert.IsTrue(lodGroupData.valid);
|
||
|
|
|
||
|
|
*removedRendererCount += lodGroupData.rendererCount;
|
||
|
|
lodGroupData.valid = false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
internal class LODGroupDataPool : IDisposable
|
||
|
|
{
|
||
|
|
private NativeList<LODGroupData> m_LODGroupData;
|
||
|
|
private NativeParallelHashMap<int, GPUInstanceIndex> m_LODGroupDataHash;
|
||
|
|
public NativeParallelHashMap<int, GPUInstanceIndex> lodGroupDataHash => m_LODGroupDataHash;
|
||
|
|
|
||
|
|
private NativeList<LODGroupCullingData> m_LODGroupCullingData;
|
||
|
|
private NativeList<GPUInstanceIndex> m_FreeLODGroupDataHandles;
|
||
|
|
|
||
|
|
private int m_CrossfadedRendererCount;
|
||
|
|
private bool m_SupportDitheringCrossFade;
|
||
|
|
|
||
|
|
public NativeList<LODGroupCullingData> lodGroupCullingData => m_LODGroupCullingData;
|
||
|
|
public int crossfadedRendererCount => m_CrossfadedRendererCount;
|
||
|
|
|
||
|
|
public int activeLodGroupCount => m_LODGroupData.Length;
|
||
|
|
|
||
|
|
private static class LodGroupShaderIDs
|
||
|
|
{
|
||
|
|
public static readonly int _SupportDitheringCrossFade = Shader.PropertyToID("_SupportDitheringCrossFade");
|
||
|
|
public static readonly int _LodGroupCullingDataGPUByteSize = Shader.PropertyToID("_LodGroupCullingDataGPUByteSize");
|
||
|
|
public static readonly int _LodGroupCullingDataStartOffset = Shader.PropertyToID("_LodGroupCullingDataStartOffset");
|
||
|
|
public static readonly int _LodCullingDataQueueCount = Shader.PropertyToID("_LodCullingDataQueueCount");
|
||
|
|
public static readonly int _InputLodCullingDataIndices = Shader.PropertyToID("_InputLodCullingDataIndices");
|
||
|
|
public static readonly int _InputLodCullingDataBuffer = Shader.PropertyToID("_InputLodCullingDataBuffer");
|
||
|
|
public static readonly int _LodGroupCullingData = Shader.PropertyToID("_LodGroupCullingData");
|
||
|
|
}
|
||
|
|
|
||
|
|
public LODGroupDataPool(GPUResidentDrawerResources resources, int initialInstanceCount, bool supportDitheringCrossFade)
|
||
|
|
{
|
||
|
|
m_LODGroupData = new NativeList<LODGroupData>(Allocator.Persistent);
|
||
|
|
m_LODGroupDataHash = new NativeParallelHashMap<int, GPUInstanceIndex>(64, Allocator.Persistent);
|
||
|
|
|
||
|
|
m_LODGroupCullingData = new NativeList<LODGroupCullingData>(Allocator.Persistent);
|
||
|
|
m_FreeLODGroupDataHandles = new NativeList<GPUInstanceIndex>(Allocator.Persistent);
|
||
|
|
|
||
|
|
m_SupportDitheringCrossFade = supportDitheringCrossFade;
|
||
|
|
}
|
||
|
|
|
||
|
|
public void Dispose()
|
||
|
|
{
|
||
|
|
m_LODGroupData.Dispose();
|
||
|
|
m_LODGroupDataHash.Dispose();
|
||
|
|
|
||
|
|
m_LODGroupCullingData.Dispose();
|
||
|
|
m_FreeLODGroupDataHandles.Dispose();
|
||
|
|
}
|
||
|
|
|
||
|
|
public unsafe void UpdateLODGroupTransformData(in GPUDrivenLODGroupData inputData)
|
||
|
|
{
|
||
|
|
var lodGroupCount = inputData.lodGroupID.Length;
|
||
|
|
|
||
|
|
var updateCount = 0;
|
||
|
|
|
||
|
|
var jobData = new UpdateLODGroupTransformJob()
|
||
|
|
{
|
||
|
|
lodGroupDataHash = m_LODGroupDataHash,
|
||
|
|
lodGroupIDs = inputData.lodGroupID,
|
||
|
|
worldSpaceReferencePoints = inputData.worldSpaceReferencePoint,
|
||
|
|
worldSpaceSizes = inputData.worldSpaceSize,
|
||
|
|
lodGroupData = m_LODGroupData,
|
||
|
|
lodGroupCullingData = m_LODGroupCullingData,
|
||
|
|
supportDitheringCrossFade = m_SupportDitheringCrossFade,
|
||
|
|
atomicUpdateCount = new UnsafeAtomicCounter32(&updateCount),
|
||
|
|
};
|
||
|
|
|
||
|
|
if (lodGroupCount >= UpdateLODGroupTransformJob.k_BatchSize)
|
||
|
|
jobData.Schedule(lodGroupCount, UpdateLODGroupTransformJob.k_BatchSize).Complete();
|
||
|
|
else
|
||
|
|
jobData.Run(lodGroupCount);
|
||
|
|
}
|
||
|
|
|
||
|
|
public unsafe void UpdateLODGroupData(in GPUDrivenLODGroupData inputData)
|
||
|
|
{
|
||
|
|
FreeLODGroupData(inputData.invalidLODGroupID);
|
||
|
|
|
||
|
|
var lodGroupInstances = new NativeArray<GPUInstanceIndex>(inputData.lodGroupID.Length, Allocator.TempJob, NativeArrayOptions.UninitializedMemory);
|
||
|
|
|
||
|
|
int previousRendererCount = 0;
|
||
|
|
|
||
|
|
new AllocateOrGetLODGroupDataInstancesJob
|
||
|
|
{
|
||
|
|
lodGroupsID = inputData.lodGroupID,
|
||
|
|
lodGroupsData = m_LODGroupData,
|
||
|
|
lodGroupCullingData = m_LODGroupCullingData,
|
||
|
|
lodGroupDataHash = m_LODGroupDataHash,
|
||
|
|
freeLODGroupDataHandles = m_FreeLODGroupDataHandles,
|
||
|
|
lodGroupInstances = lodGroupInstances,
|
||
|
|
previousRendererCount = &previousRendererCount
|
||
|
|
}.Run();
|
||
|
|
|
||
|
|
m_CrossfadedRendererCount -= previousRendererCount;
|
||
|
|
Assert.IsTrue(m_CrossfadedRendererCount >= 0);
|
||
|
|
|
||
|
|
int rendererCount = 0;
|
||
|
|
|
||
|
|
var updateLODGroupDataJobData = new UpdateLODGroupDataJob
|
||
|
|
{
|
||
|
|
lodGroupInstances = lodGroupInstances,
|
||
|
|
inputData = inputData,
|
||
|
|
supportDitheringCrossFade = m_SupportDitheringCrossFade,
|
||
|
|
lodGroupsData = m_LODGroupData.AsArray(),
|
||
|
|
lodGroupsCullingData = m_LODGroupCullingData.AsArray(),
|
||
|
|
rendererCount = new UnsafeAtomicCounter32(&rendererCount),
|
||
|
|
};
|
||
|
|
|
||
|
|
if (lodGroupInstances.Length >= UpdateLODGroupTransformJob.k_BatchSize)
|
||
|
|
updateLODGroupDataJobData.Schedule(lodGroupInstances.Length, UpdateLODGroupTransformJob.k_BatchSize).Complete();
|
||
|
|
else
|
||
|
|
updateLODGroupDataJobData.Run(lodGroupInstances.Length);
|
||
|
|
|
||
|
|
m_CrossfadedRendererCount += rendererCount;
|
||
|
|
|
||
|
|
lodGroupInstances.Dispose();
|
||
|
|
}
|
||
|
|
|
||
|
|
public unsafe void FreeLODGroupData(NativeArray<int> destroyedLODGroupsID)
|
||
|
|
{
|
||
|
|
if (destroyedLODGroupsID.Length == 0)
|
||
|
|
return;
|
||
|
|
|
||
|
|
int removedRendererCount = 0;
|
||
|
|
|
||
|
|
new FreeLODGroupDataJob
|
||
|
|
{
|
||
|
|
destroyedLODGroupsID = destroyedLODGroupsID,
|
||
|
|
lodGroupsData = m_LODGroupData,
|
||
|
|
lodGroupDataHash = m_LODGroupDataHash,
|
||
|
|
freeLODGroupDataHandles = m_FreeLODGroupDataHandles,
|
||
|
|
removedRendererCount = &removedRendererCount
|
||
|
|
}.Run();
|
||
|
|
|
||
|
|
m_CrossfadedRendererCount -= removedRendererCount;
|
||
|
|
Assert.IsTrue(m_CrossfadedRendererCount >= 0);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|