private void InitRaytracingAccelerationStructure()
{
RayTracingAccelerationStructure.RASSettings settings = new RayTracingAccelerationStructure.RASSettings();
// include default layer, not lights
settings.layerMask = -1;
// enable automatic updates
settings.managementMode = RayTracingAccelerationStructure.ManagementMode.Manual;
// include all renderer types
settings.rayTracingModeMask = RayTracingAccelerationStructure.RayTracingModeMask.Everything;
_accelerationStructure = new RayTracingAccelerationStructure(settings);
// collect all objects in scene and add them to raytracing scene
Renderer[] renderers = FindObjectsOfType <Renderer>();
foreach (Renderer r in renderers)
{
if (r.CompareTag("Light"))
{
// mask for lights is 0x10 (for shadow rays - dont want to check for intersection in some cases)
_accelerationStructure.AddInstance(r, null, null, true, false, 0x10);
}
else
{
_accelerationStructure.AddInstance(r, null, null, true, false, 0x01);
}
}
// build raytracing AS
_accelerationStructure.Build();
}
void Start()
{
if (!SystemInfo.supportsRayTracing)
{
Debug.Log("Ray Tracing not supported !");
}
_Camera = GetComponent <Camera>();
_RenderTarget0 = new RenderTexture(_Camera.pixelWidth, _Camera.pixelHeight, 0, RenderTextureFormat.ARGBFloat);
_RenderTarget0.enableRandomWrite = true;
_RenderTarget0.Create();
_RenderTarget1 = new RenderTexture(_RenderTarget0);
_RenderTarget2 = new RenderTexture(_RenderTarget0);
RayTracingAccelerationStructure.RASSettings settings = new RayTracingAccelerationStructure.RASSettings();
settings.layerMask = ~0;
settings.managementMode = RayTracingAccelerationStructure.ManagementMode.Automatic;
settings.rayTracingModeMask = RayTracingAccelerationStructure.RayTracingModeMask.Everything;
_AccelerationStructure = new RayTracingAccelerationStructure(settings);
Renderer[] renderers = FindObjectsOfType <Renderer>();
for (int i = 0; i < renderers.Length; i++)
{
Material[] materials = renderers[i].sharedMaterials;
for (int j = 0; j < materials.Length; j++)
{
materials[j] = new Material(IndirectDiffuseShader);
}
renderers[i].sharedMaterials = materials;
_AccelerationStructure.AddInstance(renderers[i]);
}
_AccelerationStructure.Build();
PathTracingShader.SetAccelerationStructure("_AccelerationStructure", _AccelerationStructure);
PathTracingShader.SetTexture("_RenderTarget", _RenderTarget0);
PathTracingShader.SetShaderPass("PathTracingRTX");
_Material = new Material(ProgressiveShader);
Reset();
}
private void InitRaytracingAccelerationStructure()
{
RayTracingAccelerationStructure.RASSettings settings = new RayTracingAccelerationStructure.RASSettings();
// include all layers
settings.layerMask = ~0;
// enable automatic updates
settings.managementMode = RayTracingAccelerationStructure.ManagementMode.Automatic;
// include all renderer types
settings.rayTracingModeMask = RayTracingAccelerationStructure.RayTracingModeMask.Everything;
_rtas = new RayTracingAccelerationStructure(settings);
// collect all objects in scene and add them to raytracing scene
Renderer[] renderers = FindObjectsOfType <Renderer>();
foreach (Renderer r in renderers)
{
_rtas.AddInstance(r);
}
// build raytracing scene
_rtas.Build();
// RTAS could also be the one from (internal)
// HDRenderPipeline.RequestAccelerationStructure();
// reset with
// HDRenderPipeline.ResetPathTracing();
}
public void FillAccelerationStructure(ref RayTracingAccelerationStructure vRayTracingAccelerationStructure)
{
foreach (var r in _renderers)
{
if (r)
{
vRayTracingAccelerationStructure.AddInstance(r, _subMeshFlagArray, _subMeshCutoffArray);
}
}
}
protected override void Setup(ScriptableRenderContext ctx, CommandBuffer cmd)
{
if (!enableRayTracingOutline) return;
_outlineRAS = new RayTracingAccelerationStructure();
if (outlineRenderers != null)
foreach (var renderer in outlineRenderers)
if (renderer != null)
_outlineRAS.AddInstance(renderer);
_outlineMask = RTHandles.Alloc(Vector2.one, TextureXR.slices, colorFormat: GraphicsFormat.R8_SNorm,
dimension: TextureXR.dimension, enableRandomWrite: true,
useDynamicScale: true, useMipMap: false,
name: "JTRP Ray Tracing Outline Mask");
}
private void InitRaytracingAccelerationStructure()
{
_rtas = new RayTracingAccelerationStructure();
// collect all objects in scene and add them to raytracing scene
Renderer[] renderers = FindObjectsOfType <Renderer>();
foreach (Renderer r in renderers)
{
_rtas.AddInstance(r);
}
// build raytrasing scene
_rtas.Build();
}
/// <summary>
/// build acceleration structure.
/// </summary>
public void BuildAccelerationStructure()
{
accelerationStructure?.Dispose();
accelerationStructure = new RayTracingAccelerationStructure();
var subMeshFlagArray = new bool[32];
var subMeshCutoffArray = new bool[32];
for (var i = 0; i < 32; ++i)
{
subMeshFlagArray[i] = true;
subMeshCutoffArray[i] = false;
}
foreach (var r in colliders)
{
accelerationStructure.AddInstance(r, subMeshFlagArray, subMeshCutoffArray);
}
accelerationStructure.Build();
}
void CreateRTAS()
{
RayTracingAccelerationStructure.RASSettings settings = new RayTracingAccelerationStructure.RASSettings();
settings.layerMask = ~0;
settings.managementMode = RayTracingAccelerationStructure.ManagementMode.Automatic;
settings.rayTracingModeMask = RayTracingAccelerationStructure.RayTracingModeMask.Everything;
_RTAS = new RayTracingAccelerationStructure(settings);
renderers = FindObjectsOfType <Renderer>();
for (int i = 0; i < renderers.Length; i++)
{
_RTAS.AddInstance(renderers[i]);
}
_RTAS.Build();
}
private void InitRaytracingAccelerationStructure()
{
RayTracingAccelerationStructure.RASSettings settings = new RayTracingAccelerationStructure.RASSettings();
// include all layers
settings.layerMask = ~0;
// enable automatic updates
settings.managementMode = RayTracingAccelerationStructure.ManagementMode.Automatic;
// include all renderer types
settings.rayTracingModeMask = RayTracingAccelerationStructure.RayTracingModeMask.Everything;
_rtas = new RayTracingAccelerationStructure(settings);
// collect all objects in scene and add them to raytracing scene
Renderer[] renderers = FindObjectsOfType <Renderer>();
foreach (Renderer r in renderers)
{
_rtas.AddInstance(r);
}
// build raytrasing scene
_rtas.Build();
}
public void Update()
{
// if loading world is not enabled, build AS and return
if (!Settings.Instance.loadWorld)
{
if (_accelerationStructure != null)
{
_accelerationStructure.UpdateInstanceTransform(sun.GetComponent <Renderer>());
_accelerationStructure.Build();
}
return;
}
_radius = Settings.Instance.WorldRadius;
if (runningJobs > 0)
{
runningJobs = 0;
JobHandle.CompleteAll(_jobHandles);
}
if (_jobHandlesAlocated)
{
_jobHandles.Dispose();
}
_jobHandles = new NativeList <JobHandle>(Allocator.Persistent);
_jobHandlesAlocated = true;
// If camera moved to another chunk, generate new chunks in multiple phases
Vector3Int chunkWherePlayerStands = ChunkWherePlayerStands();
if ((!chunkWherePlayerStands.Equals(_chunkWherePlayerStood) || _prevRadius != _radius) && phase == Phase.Resting)
{
_chunkWherePlayerStood = chunkWherePlayerStands;
int radiusInChunks = _chunkSize * _radius;
FindMissingChunks(chunkWherePlayerStands, radiusInChunks);
if (_toGenerate.Count > 0)
{
_iter = _toGenerate.Count - 1;
phase = Phase.GeneratingBlocks;
}
else if (_prevRadius != _radius)
{
phase = Phase.RemovingChunks;
}
else
{
phase = Phase.Resting;
}
_prevRadius = _radius;
}
else if (phase == Phase.GeneratingBlocks)
{
for (; _iter >= 0 && runningJobs < _maxJobsAtOnce * 5; _iter--)
{
_jobHandles.Add(_toGenerate[_iter].GenerateBlocks(centroids));
runningJobs++;
}
if (_iter < 0)
{
phase = Phase.GeneratingMeshData;
_iter = _toGenerate.Count - 1;
}
}
else if (phase == Phase.GeneratingMeshData)
{
for (; _iter >= 0 && runningJobs <= _maxJobsAtOnce * 4; _iter--)
{
if (!_toGenerate[_iter].IsEmpty())
{
_jobHandles.Add(_toGenerate[_iter].GenerateMeshData());
_toGenerate[_iter].PrepareMesh();
runningJobs++;
}
}
if (_iter < 0)
{
phase = Phase.GeneratingFlora;
_iter = _toGenerate.Count - 1;
}
}
else if (phase == Phase.GeneratingFlora)
{
for (; _iter >= 0 && runningJobs <= _maxJobsAtOnce * 4; _iter--)
{
if (_toGenerate[_iter].AreTrees())
{
_jobHandles.Add(_toGenerate[_iter].GenerateTrees());
runningJobs++;
}
}
if (_iter < 0)
{
phase = Phase.FillingMeshes;
_iter = _toGenerate.Count - 1;
}
}
else if (phase == Phase.FillingMeshes)
{
int runningFinishes = 0;
for (; _iter >= 0 && runningFinishes < 2; _iter--)
{
if (!_toGenerate[_iter].IsEmpty())
{
runningFinishes += _toGenerate[_iter].FinishCreatingChunk();
_accelerationStructure.AddInstance(_toGenerate[_iter].chunk.GetComponent <Renderer>(), null, null, true, false, 0x01);
}
}
if (_iter < 0)
{
phase = Phase.RemovingChunks;
_toGenerate.Clear();
}
}
else if (phase == Phase.RemovingChunks)
{
int radiusInChunks = _chunkSize * _radius;
RemoveChunks(chunkWherePlayerStands, radiusInChunks);
phase = Phase.Resting;
}
else
{
phase = Phase.Resting;
}
// Update sun transform and build AS
if (_accelerationStructure != null)
{
_accelerationStructure.UpdateInstanceTransform(sun.GetComponent <Renderer>());
_accelerationStructure.Build();
}
if (phase == Phase.Resting)
{
Settings.Instance.reprojectWithIDs = true;
}
else
{
Settings.Instance.reprojectWithIDs = false;
}
}
AccelerationStructureStatus AddInstanceToRAS(Renderer currentRenderer,
bool rayTracedShadow,
bool aoEnabled, int aoLayerValue,
bool reflEnabled, int reflLayerValue,
bool giEnabled, int giLayerValue,
bool recursiveEnabled, int rrLayerValue,
bool pathTracingEnabled, int ptLayerValue)
{
// Get all the materials of the mesh renderer
currentRenderer.GetSharedMaterials(materialArray);
// If the array is null, we are done
if (materialArray == null)
{
return(AccelerationStructureStatus.NullMaterial);
}
// For every sub-mesh/sub-material let's build the right flags
int numSubMeshes = 1;
if (!(currentRenderer.GetType() == typeof(SkinnedMeshRenderer)))
{
currentRenderer.TryGetComponent(out MeshFilter meshFilter);
if (meshFilter == null || meshFilter.sharedMesh == null)
{
return(AccelerationStructureStatus.MissingMesh);
}
numSubMeshes = meshFilter.sharedMesh.subMeshCount;
}
else
{
SkinnedMeshRenderer skinnedMesh = (SkinnedMeshRenderer)currentRenderer;
if (skinnedMesh.sharedMesh == null)
{
return(AccelerationStructureStatus.MissingMesh);
}
numSubMeshes = skinnedMesh.sharedMesh.subMeshCount;
}
// Get the layer of this object
int objectLayerValue = 1 << currentRenderer.gameObject.layer;
// We need to build the instance flag for this renderer
uint instanceFlag = 0x00;
bool singleSided = false;
bool materialIsOnlyTransparent = true;
bool hasTransparentSubMaterial = false;
for (int meshIdx = 0; meshIdx < numSubMeshes; ++meshIdx)
{
// Initially we consider the potential mesh as invalid
bool validMesh = false;
if (materialArray.Count > meshIdx)
{
// Grab the material for the current sub-mesh
Material currentMaterial = materialArray[meshIdx];
// The material is transparent if either it has the requested keyword or is in the transparent queue range
if (currentMaterial != null)
{
// Mesh is valid given that all requirements are ok
validMesh = true;
subMeshFlagArray[meshIdx] = true;
// Is the sub material transparent?
subMeshTransparentArray[meshIdx] = currentMaterial.IsKeywordEnabled("_SURFACE_TYPE_TRANSPARENT") ||
(HDRenderQueue.k_RenderQueue_Transparent.lowerBound <= currentMaterial.renderQueue &&
HDRenderQueue.k_RenderQueue_Transparent.upperBound >= currentMaterial.renderQueue);
// aggregate the transparency info
materialIsOnlyTransparent &= subMeshTransparentArray[meshIdx];
hasTransparentSubMaterial |= subMeshTransparentArray[meshIdx];
// Is the material alpha tested?
subMeshCutoffArray[meshIdx] = currentMaterial.IsKeywordEnabled("_ALPHATEST_ON") ||
(HDRenderQueue.k_RenderQueue_OpaqueAlphaTest.lowerBound <= currentMaterial.renderQueue &&
HDRenderQueue.k_RenderQueue_OpaqueAlphaTest.upperBound >= currentMaterial.renderQueue);
// Force it to be non single sided if it has the keyword if there is a reason
bool doubleSided = currentMaterial.doubleSidedGI || currentMaterial.IsKeywordEnabled("_DOUBLESIDED_ON");
singleSided |= !doubleSided;
// Check if the material has changed since last time we were here
if (!m_MaterialsDirty)
{
int matId = currentMaterial.GetInstanceID();
int matPrevCRC, matCurCRC = currentMaterial.ComputeCRC();
if (m_MaterialCRCs.TryGetValue(matId, out matPrevCRC))
{
m_MaterialCRCs[matId] = matCurCRC;
m_MaterialsDirty |= (matCurCRC != matPrevCRC);
}
else
{
m_MaterialCRCs.Add(matId, matCurCRC);
}
}
}
}
// If the mesh was not valid, exclude it
if (!validMesh)
{
subMeshFlagArray[meshIdx] = false;
subMeshCutoffArray[meshIdx] = false;
singleSided = true;
}
}
// If the material is considered opaque, but has some transparent sub-materials
if (!materialIsOnlyTransparent && hasTransparentSubMaterial)
{
for (int meshIdx = 0; meshIdx < numSubMeshes; ++meshIdx)
{
subMeshCutoffArray[meshIdx] = subMeshTransparentArray[meshIdx] ? true : subMeshCutoffArray[meshIdx];
}
}
// Propagate the opacity mask only if all sub materials are opaque
bool isOpaque = !hasTransparentSubMaterial;
if (isOpaque)
{
instanceFlag |= (uint)(RayTracingRendererFlag.Opaque);
}
if (rayTracedShadow || pathTracingEnabled)
{
if (hasTransparentSubMaterial)
{
// Raise the shadow casting flag if needed
instanceFlag |= ((currentRenderer.shadowCastingMode != ShadowCastingMode.Off) ? (uint)(RayTracingRendererFlag.CastShadowTransparent) : 0x00);
}
else
{
// Raise the shadow casting flag if needed
instanceFlag |= ((currentRenderer.shadowCastingMode != ShadowCastingMode.Off) ? (uint)(RayTracingRendererFlag.CastShadowOpaque) : 0x00);
}
}
// We consider a mesh visible by reflection, gi, etc if it is not in the shadow only mode.
bool meshIsVisible = currentRenderer.shadowCastingMode != ShadowCastingMode.ShadowsOnly;
if (aoEnabled && !materialIsOnlyTransparent && meshIsVisible)
{
// Raise the Ambient Occlusion flag if needed
instanceFlag |= ((aoLayerValue & objectLayerValue) != 0) ? (uint)(RayTracingRendererFlag.AmbientOcclusion) : 0x00;
}
if (reflEnabled && !materialIsOnlyTransparent && meshIsVisible)
{
// Raise the Screen Space Reflection if needed
instanceFlag |= ((reflLayerValue & objectLayerValue) != 0) ? (uint)(RayTracingRendererFlag.Reflection) : 0x00;
}
if (giEnabled && !materialIsOnlyTransparent && meshIsVisible)
{
// Raise the Global Illumination if needed
instanceFlag |= ((giLayerValue & objectLayerValue) != 0) ? (uint)(RayTracingRendererFlag.GlobalIllumination) : 0x00;
}
if (recursiveEnabled && meshIsVisible)
{
// Raise the Global Illumination if needed
instanceFlag |= ((rrLayerValue & objectLayerValue) != 0) ? (uint)(RayTracingRendererFlag.RecursiveRendering) : 0x00;
}
if (pathTracingEnabled && meshIsVisible)
{
// Raise the Global Illumination if needed
instanceFlag |= ((ptLayerValue & objectLayerValue) != 0) ? (uint)(RayTracingRendererFlag.PathTracing) : 0x00;
}
// If the object was not referenced
if (instanceFlag == 0)
{
return(AccelerationStructureStatus.Added);
}
// Add it to the acceleration structure
m_CurrentRAS.AddInstance(currentRenderer, subMeshMask: subMeshFlagArray, subMeshTransparencyFlags: subMeshCutoffArray, enableTriangleCulling: singleSided, mask: instanceFlag);
// return the status
return((!materialIsOnlyTransparent && hasTransparentSubMaterial) ? AccelerationStructureStatus.TransparencyIssue : AccelerationStructureStatus.Added);
}
AccelerationStructureStatus AddInstanceToRAS(Renderer currentRenderer,
bool rayTracedShadow,
bool aoEnabled, int aoLayerValue,
bool reflEnabled, int reflLayerValue,
bool giEnabled, int giLayerValue,
bool recursiveEnabled, int rrLayerValue,
bool pathTracingEnabled, int ptLayerValue)
{
// Get all the materials of the mesh renderer
currentRenderer.GetSharedMaterials(materialArray);
// If the array is null, we are done
if (materialArray == null)
{
return(AccelerationStructureStatus.NullMaterial);
}
// For every sub-mesh/sub-material let's build the right flags
int numSubMeshes = 1;
if (!(currentRenderer.GetType() == typeof(SkinnedMeshRenderer)))
{
currentRenderer.TryGetComponent(out MeshFilter meshFilter);
if (meshFilter == null || meshFilter.sharedMesh == null)
{
return(AccelerationStructureStatus.MissingMesh);
}
numSubMeshes = meshFilter.sharedMesh.subMeshCount;
}
else
{
SkinnedMeshRenderer skinnedMesh = (SkinnedMeshRenderer)currentRenderer;
if (skinnedMesh.sharedMesh == null)
{
return(AccelerationStructureStatus.MissingMesh);
}
numSubMeshes = skinnedMesh.sharedMesh.subMeshCount;
}
// Let's clamp the number of sub-meshes to avoid throwing an unwated error
numSubMeshes = Mathf.Min(numSubMeshes, maxNumSubMeshes);
// Get the layer of this object
int objectLayerValue = 1 << currentRenderer.gameObject.layer;
// We need to build the instance flag for this renderer
uint instanceFlag = 0x00;
bool doubleSided = false;
bool materialIsOnlyTransparent = true;
bool hasTransparentSubMaterial = false;
// We disregard the ray traced shadows option when in Path Tracing
rayTracedShadow &= !pathTracingEnabled;
// Deactivate Path Tracing if the object does not belong to the path traced layer(s)
pathTracingEnabled &= (bool)((ptLayerValue & objectLayerValue) != 0);
for (int meshIdx = 0; meshIdx < numSubMeshes; ++meshIdx)
{
// Initially we consider the potential mesh as invalid
bool validMesh = false;
if (materialArray.Count > meshIdx)
{
// Grab the material for the current sub-mesh
Material currentMaterial = materialArray[meshIdx];
// Make sure that the material is HDRP's and non-decal
if (IsValidRayTracedMaterial(currentMaterial))
{
// Mesh is valid given that all requirements are ok
validMesh = true;
// First mark the thing as valid
subMeshFlagArray[meshIdx] = RayTracingSubMeshFlags.Enabled;
// Evaluate what kind of materials we are dealing with
bool alphaTested = IsAlphaTestedMaterial(currentMaterial);
bool transparentMaterial = IsTransparentMaterial(currentMaterial);
// Aggregate the transparency info
materialIsOnlyTransparent &= transparentMaterial;
hasTransparentSubMaterial |= transparentMaterial;
// Append the additional flags depending on what kind of sub mesh this is
if (!transparentMaterial && !alphaTested)
{
subMeshFlagArray[meshIdx] |= RayTracingSubMeshFlags.ClosestHitOnly;
}
else if (transparentMaterial)
{
subMeshFlagArray[meshIdx] |= RayTracingSubMeshFlags.UniqueAnyHitCalls;
}
// Check if we want to enable double-sidedness for the mesh
// (note that a mix of single and double-sided materials will result in a double-sided mesh in the AS)
doubleSided |= currentMaterial.doubleSidedGI || currentMaterial.IsKeywordEnabled("_DOUBLESIDED_ON");
// Check if the material has changed since last time we were here
if (!m_MaterialsDirty)
{
int matId = currentMaterial.GetInstanceID();
int matPrevCRC, matCurCRC = currentMaterial.ComputeCRC();
if (m_MaterialCRCs.TryGetValue(matId, out matPrevCRC))
{
m_MaterialCRCs[matId] = matCurCRC;
m_MaterialsDirty |= (matCurCRC != matPrevCRC);
}
else
{
m_MaterialCRCs.Add(matId, matCurCRC);
}
}
}
}
// If the mesh was not valid, exclude it (without affecting sidedness)
if (!validMesh)
{
subMeshFlagArray[meshIdx] = RayTracingSubMeshFlags.Disabled;
}
}
// If the material is considered opaque, every sub-mesh has to be enabled and with unique any hit calls
if (!materialIsOnlyTransparent && hasTransparentSubMaterial)
{
for (int meshIdx = 0; meshIdx < numSubMeshes; ++meshIdx)
{
subMeshFlagArray[meshIdx] = RayTracingSubMeshFlags.Enabled | RayTracingSubMeshFlags.UniqueAnyHitCalls;
}
}
// Propagate the opacity mask only if all sub materials are opaque
bool isOpaque = !hasTransparentSubMaterial;
if (isOpaque)
{
instanceFlag |= (uint)(RayTracingRendererFlag.Opaque);
}
if (rayTracedShadow || pathTracingEnabled)
{
if (hasTransparentSubMaterial)
{
// Raise the shadow casting flag if needed
instanceFlag |= ((currentRenderer.shadowCastingMode != ShadowCastingMode.Off) ? (uint)(RayTracingRendererFlag.CastShadowTransparent) : 0x00);
}
else
{
// Raise the shadow casting flag if needed
instanceFlag |= ((currentRenderer.shadowCastingMode != ShadowCastingMode.Off) ? (uint)(RayTracingRendererFlag.CastShadowOpaque) : 0x00);
}
}
// We consider a mesh visible by reflection, gi, etc if it is not in the shadow only mode.
bool meshIsVisible = currentRenderer.shadowCastingMode != ShadowCastingMode.ShadowsOnly;
if (aoEnabled && !materialIsOnlyTransparent && meshIsVisible)
{
// Raise the Ambient Occlusion flag if needed
instanceFlag |= ((aoLayerValue & objectLayerValue) != 0) ? (uint)(RayTracingRendererFlag.AmbientOcclusion) : 0x00;
}
if (reflEnabled && !materialIsOnlyTransparent && meshIsVisible)
{
// Raise the Screen Space Reflection flag if needed
instanceFlag |= ((reflLayerValue & objectLayerValue) != 0) ? (uint)(RayTracingRendererFlag.Reflection) : 0x00;
}
if (giEnabled && !materialIsOnlyTransparent && meshIsVisible)
{
// Raise the Global Illumination flag if needed
instanceFlag |= ((giLayerValue & objectLayerValue) != 0) ? (uint)(RayTracingRendererFlag.GlobalIllumination) : 0x00;
}
if (recursiveEnabled && meshIsVisible)
{
// Raise the Recursive Rendering flag if needed
instanceFlag |= ((rrLayerValue & objectLayerValue) != 0) ? (uint)(RayTracingRendererFlag.RecursiveRendering) : 0x00;
}
if (pathTracingEnabled && meshIsVisible)
{
// Raise the Path Tracing flag if needed
instanceFlag |= (uint)(RayTracingRendererFlag.PathTracing);
}
// If the object was not referenced
if (instanceFlag == 0)
{
return(AccelerationStructureStatus.Added);
}
// Add it to the acceleration structure
m_CurrentRAS.AddInstance(currentRenderer, subMeshFlags: subMeshFlagArray, enableTriangleCulling: !doubleSided, mask: instanceFlag);
// Indicates that a transform has changed in our scene (mesh or light)
m_TransformDirty |= currentRenderer.transform.hasChanged;
currentRenderer.transform.hasChanged = false;
// return the status
return((!materialIsOnlyTransparent && hasTransparentSubMaterial) ? AccelerationStructureStatus.TransparencyIssue : AccelerationStructureStatus.Added);
}
void AddInstanceToRAS(Renderer currentRenderer,
bool rayTracedShadow,
bool aoEnabled, int aoLayerValue,
bool reflEnabled, int reflLayerValue,
bool giEnabled, int giLayerValue,
bool recursiveEnabled, int rrLayerValue,
bool pathTracingEnabled, int ptLayerValue)
{
currentRenderer.GetSharedMaterials(materialArray);
if (materialArray != null)
{
// For every sub-mesh/sub-material let's build the right flags
int numSubMeshes = materialArray.Count;
// Get the layer of this object
int objectLayerValue = 1 << currentRenderer.gameObject.layer;
// We need to build the instance flag for this renderer
uint instanceFlag = 0x00;
bool singleSided = false;
bool materialIsTransparent = false;
for (int meshIdx = 0; meshIdx < numSubMeshes; ++meshIdx)
{
Material currentMaterial = materialArray[meshIdx];
// The material is transparent if either it has the requested keyword or is in the transparent queue range
if (currentMaterial != null)
{
subMeshFlagArray[meshIdx] = true;
// Is the material transparent?
materialIsTransparent |= currentMaterial.IsKeywordEnabled("_SURFACE_TYPE_TRANSPARENT") ||
(HDRenderQueue.k_RenderQueue_Transparent.lowerBound <= currentMaterial.renderQueue &&
HDRenderQueue.k_RenderQueue_Transparent.upperBound >= currentMaterial.renderQueue) ||
(HDRenderQueue.k_RenderQueue_AllTransparentRaytracing.lowerBound <= currentMaterial.renderQueue &&
HDRenderQueue.k_RenderQueue_AllTransparentRaytracing.upperBound >= currentMaterial.renderQueue);
// Is the material alpha tested?
subMeshCutoffArray[meshIdx] = currentMaterial.IsKeywordEnabled("_ALPHATEST_ON") ||
(HDRenderQueue.k_RenderQueue_OpaqueAlphaTest.lowerBound <= currentMaterial.renderQueue &&
HDRenderQueue.k_RenderQueue_OpaqueAlphaTest.upperBound >= currentMaterial.renderQueue);
// Force it to be non single sided if it has the keyword if there is a reason
bool doubleSided = currentMaterial.doubleSidedGI || currentMaterial.IsKeywordEnabled("_DOUBLESIDED_ON");
singleSided |= !doubleSided;
}
else
{
subMeshFlagArray[meshIdx] = false;
subMeshCutoffArray[meshIdx] = false;
singleSided = true;
}
}
// Propagate the right mask
instanceFlag |= materialIsTransparent ? (uint)(1 << 1) : (uint)(1 << 0);
if (rayTracedShadow)
{
// Raise the shadow casting flag if needed
instanceFlag |= ((currentRenderer.shadowCastingMode == ShadowCastingMode.On) ? (uint)(RayTracingRendererFlag.CastShadow) : 0x00);
}
if (aoEnabled && !materialIsTransparent)
{
// Raise the Ambient Occlusion flag if needed
instanceFlag |= ((aoLayerValue & objectLayerValue) != 0) ? (uint)(RayTracingRendererFlag.AmbientOcclusion) : 0x00;
}
if (reflEnabled && !materialIsTransparent)
{
// Raise the Screen Space Reflection if needed
instanceFlag |= ((reflLayerValue & objectLayerValue) != 0) ? (uint)(RayTracingRendererFlag.Reflection) : 0x00;
}
if (giEnabled && !materialIsTransparent)
{
// Raise the Global Illumination if needed
instanceFlag |= ((giLayerValue & objectLayerValue) != 0) ? (uint)(RayTracingRendererFlag.GlobalIllumination) : 0x00;
}
if (recursiveEnabled)
{
// Raise the Global Illumination if needed
instanceFlag |= ((rrLayerValue & objectLayerValue) != 0) ? (uint)(RayTracingRendererFlag.RecursiveRendering) : 0x00;
}
if (pathTracingEnabled)
{
// Raise the Global Illumination if needed
instanceFlag |= ((ptLayerValue & objectLayerValue) != 0) ? (uint)(RayTracingRendererFlag.PathTracing) : 0x00;
}
if (instanceFlag == 0)
{
return;
}
// Add it to the acceleration structure
m_CurrentRAS.AddInstance(currentRenderer, subMeshMask: subMeshFlagArray, subMeshTransparencyFlags: subMeshCutoffArray, enableTriangleCulling: singleSided, mask: instanceFlag);
}
}
AccelerationStructureStatus AddInstanceToRAS(Renderer currentRenderer,
bool rayTracedShadow,
bool aoEnabled, int aoLayerValue,
bool reflEnabled, int reflLayerValue,
bool giEnabled, int giLayerValue,
bool recursiveEnabled, int rrLayerValue,
bool pathTracingEnabled, int ptLayerValue)
{
// Get all the materials of the mesh renderer
currentRenderer.GetSharedMaterials(materialArray);
// If the array is null, we are done
if (materialArray == null)
{
return(AccelerationStructureStatus.NullMaterial);
}
// For every sub-mesh/sub-material let's build the right flags
currentRenderer.TryGetComponent(out MeshFilter meshFilter);
if (meshFilter == null || meshFilter.sharedMesh == null)
{
return(AccelerationStructureStatus.MissingMesh);
}
int numSubMeshes = meshFilter.sharedMesh.subMeshCount;
// Get the layer of this object
int objectLayerValue = 1 << currentRenderer.gameObject.layer;
// We need to build the instance flag for this renderer
uint instanceFlag = 0x00;
bool singleSided = false;
bool materialIsOnlyTransparent = true;
bool hasTransparentSubMaterial = false;
for (int meshIdx = 0; meshIdx < numSubMeshes; ++meshIdx)
{
// Intially we consider the potential mesh as invalid
bool validMesh = false;
if (materialArray.Count > meshIdx)
{
// Grab the material for the current sub-mesh
Material currentMaterial = materialArray[meshIdx];
// The material is transparent if either it has the requested keyword or is in the transparent queue range
if (currentMaterial != null)
{
// Mesh is valid given that all requirements are ok
validMesh = true;
subMeshFlagArray[meshIdx] = true;
// Is the sub material transparent?
subMeshTransparentArray[meshIdx] = currentMaterial.IsKeywordEnabled("_SURFACE_TYPE_TRANSPARENT") ||
(HDRenderQueue.k_RenderQueue_Transparent.lowerBound <= currentMaterial.renderQueue &&
HDRenderQueue.k_RenderQueue_Transparent.upperBound >= currentMaterial.renderQueue) ||
(HDRenderQueue.k_RenderQueue_AllTransparentRaytracing.lowerBound <= currentMaterial.renderQueue &&
HDRenderQueue.k_RenderQueue_AllTransparentRaytracing.upperBound >= currentMaterial.renderQueue);
// aggregate the transparency info
materialIsOnlyTransparent &= subMeshTransparentArray[meshIdx];
hasTransparentSubMaterial |= subMeshTransparentArray[meshIdx];
// Is the material alpha tested?
subMeshCutoffArray[meshIdx] = currentMaterial.IsKeywordEnabled("_ALPHATEST_ON") ||
(HDRenderQueue.k_RenderQueue_OpaqueAlphaTest.lowerBound <= currentMaterial.renderQueue &&
HDRenderQueue.k_RenderQueue_OpaqueAlphaTest.upperBound >= currentMaterial.renderQueue);
// Force it to be non single sided if it has the keyword if there is a reason
bool doubleSided = currentMaterial.doubleSidedGI || currentMaterial.IsKeywordEnabled("_DOUBLESIDED_ON");
singleSided |= !doubleSided;
}
}
// If the mesh was not valid, exclude it
if (!validMesh)
{
subMeshFlagArray[meshIdx] = false;
subMeshCutoffArray[meshIdx] = false;
singleSided = true;
}
}
// If the material is considered opaque, but has some transparent sub-materials
if (!materialIsOnlyTransparent && hasTransparentSubMaterial)
{
for (int meshIdx = 0; meshIdx < numSubMeshes; ++meshIdx)
{
subMeshCutoffArray[meshIdx] = subMeshTransparentArray[meshIdx] ? true : subMeshCutoffArray[meshIdx];
}
}
// Propagate the right mask
instanceFlag |= materialIsOnlyTransparent ? (uint)(1 << 1) : (uint)(1 << 0);
if (rayTracedShadow)
{
// Raise the shadow casting flag if needed
instanceFlag |= ((currentRenderer.shadowCastingMode == ShadowCastingMode.On) ? (uint)(RayTracingRendererFlag.CastShadow) : 0x00);
}
if (aoEnabled && !materialIsOnlyTransparent)
{
// Raise the Ambient Occlusion flag if needed
instanceFlag |= ((aoLayerValue & objectLayerValue) != 0) ? (uint)(RayTracingRendererFlag.AmbientOcclusion) : 0x00;
}
if (reflEnabled && !materialIsOnlyTransparent)
{
// Raise the Screen Space Reflection if needed
instanceFlag |= ((reflLayerValue & objectLayerValue) != 0) ? (uint)(RayTracingRendererFlag.Reflection) : 0x00;
}
if (giEnabled && !materialIsOnlyTransparent)
{
// Raise the Global Illumination if needed
instanceFlag |= ((giLayerValue & objectLayerValue) != 0) ? (uint)(RayTracingRendererFlag.GlobalIllumination) : 0x00;
}
if (recursiveEnabled)
{
// Raise the Global Illumination if needed
instanceFlag |= ((rrLayerValue & objectLayerValue) != 0) ? (uint)(RayTracingRendererFlag.RecursiveRendering) : 0x00;
}
if (pathTracingEnabled)
{
// Raise the Global Illumination if needed
instanceFlag |= ((ptLayerValue & objectLayerValue) != 0) ? (uint)(RayTracingRendererFlag.PathTracing) : 0x00;
}
// If the object was not referenced
if (instanceFlag == 0)
{
return(AccelerationStructureStatus.Added);
}
// Add it to the acceleration structure
m_CurrentRAS.AddInstance(currentRenderer, subMeshMask: subMeshFlagArray, subMeshTransparencyFlags: subMeshCutoffArray, enableTriangleCulling: singleSided, mask: instanceFlag);
// return the status
return((!materialIsOnlyTransparent && hasTransparentSubMaterial) ? AccelerationStructureStatus.TransparencyIssue : AccelerationStructureStatus.Added);
}