private void UpdateParameters()
{
// update raytracing scene, in case something moved
_rtas.Build();
// frustum corners for current camera transform
Vector3 bottomLeft = _camera.ViewportToWorldPoint(new Vector3(0, 0, _camera.farClipPlane)).normalized;
Vector3 topLeft = _camera.ViewportToWorldPoint(new Vector3(0, 1, _camera.farClipPlane)).normalized;
Vector3 bottomRight = _camera.ViewportToWorldPoint(new Vector3(1, 0, _camera.farClipPlane)).normalized;
Vector3 topRight = _camera.ViewportToWorldPoint(new Vector3(1, 1, _camera.farClipPlane)).normalized;
// update camera, environment parameters
_rayTracingShader.SetVector("_SkyColor", SkyColor.gamma);
_rayTracingShader.SetVector("_GroundColor", GroundColor.gamma);
_rayTracingShader.SetVector("_TopLeftFrustumDir", topLeft);
_rayTracingShader.SetVector("_TopRightFrustumDir", topRight);
_rayTracingShader.SetVector("_BottomLeftFrustumDir", bottomLeft);
_rayTracingShader.SetVector("_BottomRightFrustumDir", bottomRight);
_rayTracingShader.SetVector("_CameraPos", _camera.transform.position);
_cameraWorldMatrix = _camera.transform.localToWorldMatrix;
// reset accumulation frame counter
_frameIndex = 0;
}
void Update()
{
HDRenderPipeline hdrp = RenderPipelineManager.currentPipeline is HDRenderPipeline ? (HDRenderPipeline)RenderPipelineManager.currentPipeline : null;
if (hdrp != null)
{
// Get the HDCamera for the current camera
var hdCamera = HDCamera.GetOrCreate(GetComponent <Camera>());
// Evaluate the effect params
HDEffectsParameters hdEffectParams = HDRenderPipeline.EvaluateEffectsParameters(hdCamera, true, false);
// Clear the rtas from the previous frame
if (rtas != null)
{
rtas.Dispose();
}
// Create the RTAS
rtas = new RayTracingAccelerationStructure();
// Add all the objects individually
int numGameObjects = gameObjects.Count;
for (int i = 0; i < numGameObjects; ++i)
{
HDRenderPipeline.AddInstanceToRAS(rtas, gameObjects[i].GetComponent <Renderer>(), hdEffectParams, ref hdCamera.transformsDirty, ref hdCamera.materialsDirty);
}
// Build the RTAS
rtas.Build(transform.position);
// Assign it to the camera
hdCamera.rayTracingAccelerationStructure = rtas;
}
}
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);
// not necessary in automatic mode
// 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();
}
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 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 OnRenderImage(RenderTexture src, RenderTexture dest)
{
if (!SystemInfo.supportsRayTracing || !rayTracingShader)
{
Debug.Log("The RayTracing API is not supported by this GPU or by the current graphics API.");
Graphics.Blit(src, dest);
return;
}
if (rayTracingAccelerationStructure == null)
{
return;
}
if (prevCameraMatrix != Camera.main.cameraToWorldMatrix)
{
convergenceStep = 0;
}
if (prevBounceCountOpaque != bounceCountOpaque)
{
convergenceStep = 0;
}
if (prevBounceCountTransparent != bounceCountTransparent)
{
convergenceStep = 0;
}
// Not really needed per frame if the scene is static.
rayTracingAccelerationStructure.Build();
rayTracingShader.SetShaderPass("PathTracing");
Shader.SetGlobalInt(Shader.PropertyToID("g_BounceCountOpaque"), (int)bounceCountOpaque);
Shader.SetGlobalInt(Shader.PropertyToID("g_BounceCountTransparent"), (int)bounceCountTransparent);
// Input
rayTracingShader.SetAccelerationStructure(Shader.PropertyToID("g_AccelStruct"), rayTracingAccelerationStructure);
rayTracingShader.SetFloat(Shader.PropertyToID("g_Zoom"), Mathf.Tan(Mathf.Deg2Rad * Camera.main.fieldOfView * 0.5f));
rayTracingShader.SetFloat(Shader.PropertyToID("g_AspectRatio"), cameraWidth / (float)cameraHeight);
rayTracingShader.SetInt(Shader.PropertyToID("g_ConvergenceStep"), convergenceStep);
rayTracingShader.SetInt(Shader.PropertyToID("g_FrameIndex"), Time.frameCount);
rayTracingShader.SetTexture(Shader.PropertyToID("g_EnvTex"), envTexture);
// Output
rayTracingShader.SetTexture(Shader.PropertyToID("g_Radiance"), rayTracingOutput);
rayTracingShader.Dispatch("MainRayGenShader", (int)cameraWidth, (int)cameraHeight, 1, Camera.main);
Graphics.Blit(rayTracingOutput, dest);
convergenceStep++;
prevCameraMatrix = Camera.main.cameraToWorldMatrix;
prevBounceCountOpaque = bounceCountOpaque;
prevBounceCountTransparent = bounceCountTransparent;
}
private void InitRTMannager()
{
InfinityRenderPipelineAsset PipelineAsset = (InfinityRenderPipelineAsset)GraphicsSettings.currentRenderPipeline;
if (TracingAccelerationStructure == null && PipelineAsset.EnableRayTracing == true)
{
RayTracingAccelerationStructure.RASSettings TracingAccelerationStructureSetting = new RayTracingAccelerationStructure.RASSettings(RayTracingAccelerationStructure.ManagementMode.Automatic, RayTracingAccelerationStructure.RayTracingModeMask.Everything, -1 ^ (1 << 9));
TracingAccelerationStructure = new RayTracingAccelerationStructure(TracingAccelerationStructureSetting);
TracingAccelerationStructure.Build();//
}
}
private void DoRayTracingOutline(CustomPassContext ctx)
{
ctx.cmd.SetRayTracingShaderPass(rayTracingOutlineShader, "JTRPRayTracingOutline");
if (ShaderConfig.s_CameraRelativeRendering != 0)
_outlineRAS.Build(ctx.hdCamera.camera.transform.position);
else
_outlineRAS.Build();
if (outlineRenderers != null)
foreach (var renderer in outlineRenderers)
if (renderer != null)
_outlineRAS.UpdateInstanceTransform(renderer);
ctx.cmd.SetRayTracingAccelerationStructure(rayTracingOutlineShader, "_RaytracingAccelerationStructure",
_outlineRAS);
ctx.cmd.SetRayTracingTextureParam(rayTracingOutlineShader, "RenderTarget", ctx.cameraColorBuffer);
ctx.cmd.SetRayTracingTextureParam(rayTracingOutlineShader, "_DepthTexture", ctx.cameraDepthBuffer);
ctx.cmd.SetRayTracingTextureParam(rayTracingOutlineShader, "_OutlineMask", _outlineMask);
ctx.cmd.DispatchRays(rayTracingOutlineShader, "RayTracingOutlineRaygen",
(uint)ctx.cameraColorBuffer.rt.width,
(uint)ctx.cameraColorBuffer.rt.height, 1);
}
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();
}
//build the ray tracing acceleration structure.
private void BuildAccelerationStructure()
{
if (null == SceneManager.Instance || !SceneManager.Instance._isDirty)
{
return;
}
_rayTracingAccelerationStructure.Dispose();
_rayTracingAccelerationStructure = new RayTracingAccelerationStructure();
SceneManager.Instance.FillAccelerationStructure(ref _rayTracingAccelerationStructure);
_rayTracingAccelerationStructure.Build();
SceneManager.Instance._isDirty = false;
}
/// <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 OnRenderImage(RenderTexture src, RenderTexture dest)
{
var cam = Camera.main;
if (!CheckResources(cam))
{
Graphics.Blit(src, dest);
return;
}
//-- shader pass "RTPass" in material shaders
rtShader.SetShaderPass("RTPass");
//- set global variables, used in all material shaders
Shader.SetGlobalVector(ShaderID._T_minmax, new Vector2(tMin, tMax));
//-- set local RT raygen shader variables
_rtAccStructure.Build();
rtShader.SetAccelerationStructure(ShaderID._SceneAccelerationStructure, _rtAccStructure);
rtShader.SetTexture(ShaderID._RenderTarget, _rtTargetTexture);
rtShader.SetMatrix(ShaderID._InvViewMatrix, cam.cameraToWorldMatrix);
rtShader.SetTexture(ShaderID._EnvironmentTex, environmentCubemap);
rtShader.SetFloat(ShaderID._EnvironmentGamma, Mathf.GammaToLinearSpace(environmentExposure));
rtShader.SetFloat(ShaderID._ShadowBrightness, shadowBrightness);
var camOrigin = cam.transform.position;
var frustumBottomLeftDirWS = (cam.ViewportToWorldPoint(new Vector3(0, 0, cam.nearClipPlane)) - camOrigin).normalized;
var frustumBottomRightDirWS = (cam.ViewportToWorldPoint(new Vector3(1, 0, cam.nearClipPlane)) - camOrigin).normalized;
var frustumTopLeftDirWS = (cam.ViewportToWorldPoint(new Vector3(0, 1, cam.nearClipPlane)) - camOrigin).normalized;
rtShader.SetVector(ShaderID._FrustumBottomLeftDirWS, frustumBottomLeftDirWS);
rtShader.SetVector(ShaderID._FrustumHorizDirWS, frustumBottomRightDirWS - frustumBottomLeftDirWS);
rtShader.SetVector(ShaderID._FrustumVertDirWS, frustumTopLeftDirWS - frustumBottomLeftDirWS);
//-- dispatch ray tracing
rtShader.Dispatch("RaygenShader", cam.pixelWidth, cam.pixelHeight, 1);
Graphics.Blit(_rtTargetTexture, dest);
}
internal void BuildRayTracingAccelerationStructure(HDCamera hdCamera)
{
// Clear all the per frame-data
m_RayTracingRendererReference.Clear();
m_RayTracingLights.hdDirectionalLightArray.Clear();
m_RayTracingLights.hdPointLightArray.Clear();
m_RayTracingLights.hdLineLightArray.Clear();
m_RayTracingLights.hdRectLightArray.Clear();
m_RayTracingLights.hdLightArray.Clear();
m_RayTracingLights.reflectionProbeArray.Clear();
m_RayTracingLights.lightCount = 0;
m_CurrentRAS.Dispose();
m_CurrentRAS = new RayTracingAccelerationStructure();
m_ValidRayTracingState = false;
m_ValidRayTracingCluster = false;
bool rayTracedShadow = false;
// fetch all the lights in the scene
HDAdditionalLightData[] hdLightArray = UnityEngine.GameObject.FindObjectsOfType <HDAdditionalLightData>();
for (int lightIdx = 0; lightIdx < hdLightArray.Length; ++lightIdx)
{
HDAdditionalLightData hdLight = hdLightArray[lightIdx];
if (hdLight.enabled)
{
// Check if there is a ray traced shadow in the scene
rayTracedShadow |= (hdLight.useRayTracedShadows || (hdLight.useContactShadow.@override && hdLight.rayTraceContactShadow));
switch (hdLight.type)
{
case HDLightType.Directional:
m_RayTracingLights.hdDirectionalLightArray.Add(hdLight);
break;
case HDLightType.Point:
case HDLightType.Spot:
m_RayTracingLights.hdPointLightArray.Add(hdLight);
break;
case HDLightType.Area:
switch (hdLight.areaLightShape)
{
case AreaLightShape.Rectangle:
m_RayTracingLights.hdRectLightArray.Add(hdLight);
break;
case AreaLightShape.Tube:
m_RayTracingLights.hdLineLightArray.Add(hdLight);
break;
//TODO: case AreaLightShape.Disc:
}
break;
}
}
}
m_RayTracingLights.hdLightArray.AddRange(m_RayTracingLights.hdPointLightArray);
m_RayTracingLights.hdLightArray.AddRange(m_RayTracingLights.hdLineLightArray);
m_RayTracingLights.hdLightArray.AddRange(m_RayTracingLights.hdRectLightArray);
HDAdditionalReflectionData[] reflectionProbeArray = UnityEngine.GameObject.FindObjectsOfType <HDAdditionalReflectionData>();
for (int reflIdx = 0; reflIdx < reflectionProbeArray.Length; ++reflIdx)
{
HDAdditionalReflectionData reflectionProbe = reflectionProbeArray[reflIdx];
// Add it to the list if enabled
if (reflectionProbe.enabled)
{
m_RayTracingLights.reflectionProbeArray.Add(reflectionProbe);
}
}
m_RayTracingLights.lightCount = m_RayTracingLights.hdPointLightArray.Count
+ m_RayTracingLights.hdLineLightArray.Count
+ m_RayTracingLights.hdRectLightArray.Count
+ m_RayTracingLights.reflectionProbeArray.Count;
AmbientOcclusion aoSettings = hdCamera.volumeStack.GetComponent <AmbientOcclusion>();
ScreenSpaceReflection reflSettings = hdCamera.volumeStack.GetComponent <ScreenSpaceReflection>();
GlobalIllumination giSettings = hdCamera.volumeStack.GetComponent <GlobalIllumination>();
RecursiveRendering recursiveSettings = hdCamera.volumeStack.GetComponent <RecursiveRendering>();
PathTracing pathTracingSettings = hdCamera.volumeStack.GetComponent <PathTracing>();
LODGroup[] lodGroupArray = UnityEngine.GameObject.FindObjectsOfType <LODGroup>();
for (var i = 0; i < lodGroupArray.Length; i++)
{
// Grab the current LOD group
LODGroup lodGroup = lodGroupArray[i];
// Get the set of LODs
LOD[] lodArray = lodGroup.GetLODs();
for (int lodIdx = 0; lodIdx < lodArray.Length; ++lodIdx)
{
LOD currentLOD = lodArray[lodIdx];
// We only want to push to the acceleration structure the lod0, we do not have defined way to select the right LOD at the moment
if (lodIdx == 0)
{
for (int rendererIdx = 0; rendererIdx < currentLOD.renderers.Length; ++rendererIdx)
{
// Fetch the renderer that we are interested in
Renderer currentRenderer = currentLOD.renderers[rendererIdx];
// This objects should but included into the RAS
AddInstanceToRAS(currentRenderer,
rayTracedShadow,
aoSettings.rayTracing.value, aoSettings.layerMask.value,
reflSettings.rayTracing.value, reflSettings.layerMask.value,
giSettings.rayTracing.value, giSettings.layerMask.value,
recursiveSettings.enable.value, recursiveSettings.layerMask.value,
pathTracingSettings.enable.value, pathTracingSettings.layerMask.value);
}
}
// Add them to the processed set so that they are not taken into account when processing all the renderers
for (int rendererIdx = 0; rendererIdx < currentLOD.renderers.Length; ++rendererIdx)
{
Renderer currentRenderer = currentLOD.renderers[rendererIdx];
// Add this fella to the renderer list
m_RayTracingRendererReference.Add(currentRenderer.GetInstanceID(), 1);
}
}
}
// Grab all the renderers from the scene
var rendererArray = UnityEngine.GameObject.FindObjectsOfType <Renderer>();
for (var i = 0; i < rendererArray.Length; i++)
{
// Fetch the current renderer
Renderer currentRenderer = rendererArray[i];
// If it is not active skip it
if (currentRenderer.enabled == false)
{
continue;
}
// Grab the current game object
GameObject gameObject = currentRenderer.gameObject;
// Has this object already been processed, just skip it
if (m_RayTracingRendererReference.ContainsKey(currentRenderer.GetInstanceID()))
{
continue;
}
// Does this object have a reflection probe component? if yes we do not want to have it in the acceleration structure
if (gameObject.TryGetComponent <ReflectionProbe>(out reflectionProbe))
{
continue;
}
// This objects should but included into the RAS
AddInstanceToRAS(currentRenderer,
rayTracedShadow,
aoSettings.rayTracing.value, aoSettings.layerMask.value,
reflSettings.rayTracing.value, reflSettings.layerMask.value,
giSettings.rayTracing.value, giSettings.layerMask.value,
recursiveSettings.enable.value, recursiveSettings.layerMask.value,
pathTracingSettings.enable.value, pathTracingSettings.layerMask.value);
}
// build the acceleration structure
m_CurrentRAS.Build();
// tag the structures as valid
m_ValidRayTracingState = true;
}
internal void BuildRayTracingAccelerationStructure(HDCamera hdCamera)
{
// Clear all the per frame-data
m_RayTracingRendererReference.Clear();
m_RayTracingLights.hdDirectionalLightArray.Clear();
m_RayTracingLights.hdPointLightArray.Clear();
m_RayTracingLights.hdLineLightArray.Clear();
m_RayTracingLights.hdRectLightArray.Clear();
m_RayTracingLights.hdLightArray.Clear();
m_RayTracingLights.reflectionProbeArray.Clear();
m_RayTracingLights.lightCount = 0;
m_CurrentRAS.Dispose();
m_CurrentRAS = new RayTracingAccelerationStructure();
m_ValidRayTracingState = false;
m_ValidRayTracingCluster = false;
m_ValidRayTracingClusterCulling = false;
m_RayTracedShadowsRequired = false;
m_RayTracedContactShadowsRequired = false;
// If the camera does not have a ray tracing frame setting
// or it is a preview camera (due to the fact that the sphere does not exist as a game object we can't create the RTAS)
// we do not want to build a RTAS
if (!hdCamera.frameSettings.IsEnabled(FrameSettingsField.RayTracing) || hdCamera.camera.cameraType == CameraType.Preview)
{
return;
}
// We only support ray traced shadows if the camera supports ray traced shadows
bool screenSpaceShadowsSupported = hdCamera.frameSettings.IsEnabled(FrameSettingsField.ScreenSpaceShadows);
// fetch all the lights in the scene
HDAdditionalLightData[] hdLightArray = UnityEngine.GameObject.FindObjectsOfType <HDAdditionalLightData>();
for (int lightIdx = 0; lightIdx < hdLightArray.Length; ++lightIdx)
{
HDAdditionalLightData hdLight = hdLightArray[lightIdx];
if (hdLight.enabled)
{
// Check if there is a ray traced shadow in the scene
m_RayTracedShadowsRequired |= (hdLight.useRayTracedShadows && screenSpaceShadowsSupported);
m_RayTracedContactShadowsRequired |= (hdLight.useContactShadow.@override && hdLight.rayTraceContactShadow);
switch (hdLight.type)
{
case HDLightType.Directional:
m_RayTracingLights.hdDirectionalLightArray.Add(hdLight);
break;
case HDLightType.Point:
case HDLightType.Spot:
m_RayTracingLights.hdPointLightArray.Add(hdLight);
break;
case HDLightType.Area:
switch (hdLight.areaLightShape)
{
case AreaLightShape.Rectangle:
m_RayTracingLights.hdRectLightArray.Add(hdLight);
break;
case AreaLightShape.Tube:
m_RayTracingLights.hdLineLightArray.Add(hdLight);
break;
//TODO: case AreaLightShape.Disc:
}
break;
}
}
}
// Aggregate the shadow requirement
bool rayTracedShadows = m_RayTracedShadowsRequired || m_RayTracedContactShadowsRequired;
m_RayTracingLights.hdLightArray.AddRange(m_RayTracingLights.hdPointLightArray);
m_RayTracingLights.hdLightArray.AddRange(m_RayTracingLights.hdLineLightArray);
m_RayTracingLights.hdLightArray.AddRange(m_RayTracingLights.hdRectLightArray);
HDAdditionalReflectionData[] reflectionProbeArray = UnityEngine.GameObject.FindObjectsOfType <HDAdditionalReflectionData>();
for (int reflIdx = 0; reflIdx < reflectionProbeArray.Length; ++reflIdx)
{
HDAdditionalReflectionData reflectionProbe = reflectionProbeArray[reflIdx];
// Add it to the list if enabled
if (reflectionProbe.enabled)
{
m_RayTracingLights.reflectionProbeArray.Add(reflectionProbe);
}
}
m_RayTracingLights.lightCount = m_RayTracingLights.hdPointLightArray.Count
+ m_RayTracingLights.hdLineLightArray.Count
+ m_RayTracingLights.hdRectLightArray.Count
+ m_RayTracingLights.reflectionProbeArray.Count;
AmbientOcclusion aoSettings = hdCamera.volumeStack.GetComponent <AmbientOcclusion>();
bool rtAOEnabled = aoSettings.rayTracing.value && hdCamera.frameSettings.IsEnabled(FrameSettingsField.SSAO);
ScreenSpaceReflection reflSettings = hdCamera.volumeStack.GetComponent <ScreenSpaceReflection>();
bool rtREnabled = reflSettings.enabled.value && reflSettings.rayTracing.value && hdCamera.frameSettings.IsEnabled(FrameSettingsField.SSR);
GlobalIllumination giSettings = hdCamera.volumeStack.GetComponent <GlobalIllumination>();
bool rtGIEnabled = giSettings.enable.value && giSettings.rayTracing.value && hdCamera.frameSettings.IsEnabled(FrameSettingsField.SSGI);
RecursiveRendering recursiveSettings = hdCamera.volumeStack.GetComponent <RecursiveRendering>();
bool rrEnabled = recursiveSettings.enable.value;
SubSurfaceScattering sssSettings = hdCamera.volumeStack.GetComponent <SubSurfaceScattering>();
bool rtSSSEnabled = sssSettings.rayTracing.value && hdCamera.frameSettings.IsEnabled(FrameSettingsField.SubsurfaceScattering);
PathTracing pathTracingSettings = hdCamera.volumeStack.GetComponent <PathTracing>();
bool ptEnabled = pathTracingSettings.enable.value;
// We need to check if we should be building the ray tracing acceleration structure (if required by any effect)
bool rayTracingRequired = rtAOEnabled || rtREnabled || rtGIEnabled || rrEnabled || rtSSSEnabled || ptEnabled || rayTracedShadows;
if (!rayTracingRequired)
{
return;
}
// We need to process the emissive meshes of the rectangular area lights
for (var i = 0; i < m_RayTracingLights.hdRectLightArray.Count; i++)
{
// Fetch the current renderer of the rectangular area light (if any)
MeshRenderer currentRenderer = m_RayTracingLights.hdRectLightArray[i].emissiveMeshRenderer;
// If there is none it means that there is no emissive mesh for this light
if (currentRenderer == null)
{
continue;
}
// This objects should be included into the RAS
AddInstanceToRAS(currentRenderer,
rayTracedShadows,
rtAOEnabled, aoSettings.layerMask.value,
rtREnabled, reflSettings.layerMask.value,
rtGIEnabled, giSettings.layerMask.value,
rrEnabled, recursiveSettings.layerMask.value,
ptEnabled, pathTracingSettings.layerMask.value);
}
int matCount = m_MaterialCRCs.Count;
LODGroup[] lodGroupArray = UnityEngine.GameObject.FindObjectsOfType <LODGroup>();
for (var i = 0; i < lodGroupArray.Length; i++)
{
// Grab the current LOD group
LODGroup lodGroup = lodGroupArray[i];
// Get the set of LODs
LOD[] lodArray = lodGroup.GetLODs();
for (int lodIdx = 0; lodIdx < lodArray.Length; ++lodIdx)
{
LOD currentLOD = lodArray[lodIdx];
// We only want to push to the acceleration structure the lod0, we do not have defined way to select the right LOD at the moment
if (lodIdx == 0)
{
for (int rendererIdx = 0; rendererIdx < currentLOD.renderers.Length; ++rendererIdx)
{
// Fetch the renderer that we are interested in
Renderer currentRenderer = currentLOD.renderers[rendererIdx];
// This objects should but included into the RAS
AddInstanceToRAS(currentRenderer,
rayTracedShadows,
aoSettings.rayTracing.value, aoSettings.layerMask.value,
reflSettings.rayTracing.value, reflSettings.layerMask.value,
giSettings.rayTracing.value, giSettings.layerMask.value,
recursiveSettings.enable.value, recursiveSettings.layerMask.value,
pathTracingSettings.enable.value, pathTracingSettings.layerMask.value);
}
}
// Add them to the processed set so that they are not taken into account when processing all the renderers
for (int rendererIdx = 0; rendererIdx < currentLOD.renderers.Length; ++rendererIdx)
{
Renderer currentRenderer = currentLOD.renderers[rendererIdx];
// Add this fella to the renderer list
// Unfortunately, we need to check that this renderer was not already pushed into the list (happens if the user uses the same mesh renderer
// for two LODs)
if (!m_RayTracingRendererReference.ContainsKey(currentRenderer.GetInstanceID()))
{
m_RayTracingRendererReference.Add(currentRenderer.GetInstanceID(), 1);
}
}
}
}
// Grab all the renderers from the scene
var rendererArray = UnityEngine.GameObject.FindObjectsOfType <Renderer>();
for (var i = 0; i < rendererArray.Length; i++)
{
// Fetch the current renderer
Renderer currentRenderer = rendererArray[i];
// If it is not active skip it
if (currentRenderer.enabled == false)
{
continue;
}
// Grab the current game object
GameObject gameObject = currentRenderer.gameObject;
// Has this object already been processed, just skip it
if (m_RayTracingRendererReference.ContainsKey(currentRenderer.GetInstanceID()))
{
continue;
}
// Does this object have a reflection probe component? if yes we do not want to have it in the acceleration structure
if (gameObject.TryGetComponent <ReflectionProbe>(out reflectionProbe))
{
continue;
}
// This objects should be included into the RAS
AddInstanceToRAS(currentRenderer,
rayTracedShadows,
aoSettings.rayTracing.value, aoSettings.layerMask.value,
reflSettings.rayTracing.value, reflSettings.layerMask.value,
giSettings.rayTracing.value, giSettings.layerMask.value,
recursiveSettings.enable.value, recursiveSettings.layerMask.value,
pathTracingSettings.enable.value, pathTracingSettings.layerMask.value);
}
// Check if the amount of materials being tracked has changed
m_MaterialsDirty |= (matCount != m_MaterialCRCs.Count);
// build the acceleration structure
m_CurrentRAS.Build();
// tag the structures as valid
m_ValidRayTracingState = true;
}
private void Update()
{
Render();
_rtas.Build();
DispatchRays();
}
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;
}
}