public void DenoiseIndirectDiffuseBuffer(HDCamera hdCamera, CommandBuffer cmd, GlobalIllumination settings)
{
// Grab the high frequency history buffer
RTHandle indirectDiffuseHistoryHF = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedIndirectDiffuseHF)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedIndirectDiffuseHF, IndirectDiffuseHistoryBufferAllocatorFunction, 1);
// Apply the temporal denoiser
HDTemporalFilter temporalFilter = GetTemporalFilter();
temporalFilter.DenoiseBuffer(cmd, hdCamera, m_IDIntermediateBuffer0, indirectDiffuseHistoryHF, m_IDIntermediateBuffer1, singleChannel: false);
// Apply the first pass of our denoiser
HDDiffuseDenoiser diffuseDenoiser = GetDiffuseDenoiser();
diffuseDenoiser.DenoiseBuffer(cmd, hdCamera, m_IDIntermediateBuffer1, m_IDIntermediateBuffer0, settings.denoiserRadius.value, singleChannel: false, halfResolutionFilter: settings.halfResolutionDenoiser.value);
// If the second pass is requested, do it otherwise blit
if (settings.secondDenoiserPass.value)
{
// Grab the low frequency history buffer
RTHandle indirectDiffuseHistoryLF = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedIndirectDiffuseLF)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedIndirectDiffuseLF, IndirectDiffuseHistoryBufferAllocatorFunction, 1);
temporalFilter.DenoiseBuffer(cmd, hdCamera, m_IDIntermediateBuffer0, indirectDiffuseHistoryLF, m_IDIntermediateBuffer1, singleChannel: false);
diffuseDenoiser.DenoiseBuffer(cmd, hdCamera, m_IDIntermediateBuffer1, m_IDIntermediateBuffer0, settings.secondDenoiserRadius.value, singleChannel: false, halfResolutionFilter: settings.halfResolutionDenoiser.value);
}
}
public void DenoiseAO(CommandBuffer cmd, HDCamera hdCamera, RTHandle outputTexture)
{
var aoSettings = hdCamera.volumeStack.GetComponent <AmbientOcclusion>();
if (aoSettings.denoise)
{
// Evaluate the history's validity
float historyValidity = historyValidity = HDRenderPipeline.ValidRayTracingHistory(hdCamera) ? 1.0f : 0.0f;
// Grab the history buffer
RTHandle aoHistory = RequestAmbientOcclusionHistoryTexture(hdCamera);
// Prepare and execute the temporal filter
HDTemporalFilter temporalFilter = m_RenderPipeline.GetTemporalFilter();
TemporalFilterParameters tfParameters = temporalFilter.PrepareTemporalFilterParameters(hdCamera, true, historyValidity);
RTHandle validationBuffer = m_RenderPipeline.GetRayTracingBuffer(InternalRayTracingBuffers.R0);
TemporalFilterResources tfResources = temporalFilter.PrepareTemporalFilterResources(hdCamera, validationBuffer, m_AOIntermediateBuffer0, aoHistory, m_AOIntermediateBuffer1);
HDTemporalFilter.DenoiseBuffer(cmd, tfParameters, tfResources);
// Apply the diffuse denoiser
HDDiffuseDenoiser diffuseDenoiser = m_RenderPipeline.GetDiffuseDenoiser();
DiffuseDenoiserParameters ddParams = diffuseDenoiser.PrepareDiffuseDenoiserParameters(hdCamera, true, aoSettings.denoiserRadius, false, false);
RTHandle intermediateBuffer = m_RenderPipeline.GetRayTracingBuffer(InternalRayTracingBuffers.RGBA0);
DiffuseDenoiserResources ddResources = diffuseDenoiser.PrepareDiffuseDenoiserResources(m_AOIntermediateBuffer1, intermediateBuffer, outputTexture);
HDDiffuseDenoiser.DenoiseBuffer(cmd, ddParams, ddResources);
}
else
{
HDUtils.BlitCameraTexture(cmd, m_AOIntermediateBuffer0, outputTexture);
}
}
void DenoiseIndirectDiffuseBuffer(HDCamera hdCamera, CommandBuffer cmd, GlobalIllumination settings)
{
// Grab the high frequency history buffer
RTHandle indirectDiffuseHistoryHF = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedIndirectDiffuseHF)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedIndirectDiffuseHF, IndirectDiffuseHistoryBufferAllocatorFunction, 1);
// Request the intermediate texture we will be using
RTHandle intermediateBuffer1 = GetRayTracingBuffer(InternalRayTracingBuffers.RGBA1);
float historyValidity = 1.0f;
#if UNITY_HDRP_DXR_TESTS_DEFINE
if (Application.isPlaying)
{
historyValidity = 0.0f;
}
else
#endif
// We need to check if something invalidated the history buffers
historyValidity *= ValidRayTracingHistory(hdCamera) ? 1.0f : 0.0f;
// Apply the temporal denoiser
HDTemporalFilter temporalFilter = GetTemporalFilter();
temporalFilter.DenoiseBuffer(cmd, hdCamera, m_IndirectDiffuseBuffer, indirectDiffuseHistoryHF, intermediateBuffer1, singleChannel: false, historyValidity: historyValidity);
// Apply the first pass of our denoiser
HDDiffuseDenoiser diffuseDenoiser = GetDiffuseDenoiser();
diffuseDenoiser.DenoiseBuffer(cmd, hdCamera, intermediateBuffer1, m_IndirectDiffuseBuffer, settings.denoiserRadius.value, singleChannel: false, halfResolutionFilter: settings.halfResolutionDenoiser.value);
// If the second pass is requested, do it otherwise blit
if (settings.secondDenoiserPass.value)
{
// Grab the low frequency history buffer
RTHandle indirectDiffuseHistoryLF = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedIndirectDiffuseLF)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedIndirectDiffuseLF, IndirectDiffuseHistoryBufferAllocatorFunction, 1);
temporalFilter.DenoiseBuffer(cmd, hdCamera, m_IndirectDiffuseBuffer, indirectDiffuseHistoryLF, intermediateBuffer1, singleChannel: false, historyValidity: historyValidity);
diffuseDenoiser.DenoiseBuffer(cmd, hdCamera, intermediateBuffer1, m_IndirectDiffuseBuffer, settings.secondDenoiserRadius.value, singleChannel: false, halfResolutionFilter: settings.halfResolutionDenoiser.value);
}
}
void DenoiseIndirectDiffuseBuffer(HDCamera hdCamera, CommandBuffer cmd, GlobalIllumination settings)
{
// Grab the high frequency history buffer
RTHandle indirectDiffuseHistoryHF = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedIndirectDiffuseHF)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedIndirectDiffuseHF, IndirectDiffuseHistoryBufferAllocatorFunction, 1);
// Request the intermediate textures we will be using
RTHandle intermediateBuffer1 = GetRayTracingBuffer(InternalRayTracingBuffers.RGBA1);
RTHandle validationBuffer = GetRayTracingBuffer(InternalRayTracingBuffers.R0);
// Evaluate the history validity
float historyValidity0 = EvaluateIndirectDiffuseHistoryValidity0(hdCamera, settings.fullResolution, true);
// Grab the temporal denoiser
HDTemporalFilter temporalFilter = GetTemporalFilter();
// Temporal denoising
TemporalFilterParameters tfParameters = temporalFilter.PrepareTemporalFilterParameters(hdCamera, false, historyValidity0);
TemporalFilterResources tfResources = temporalFilter.PrepareTemporalFilterResources(hdCamera, validationBuffer, m_IndirectDiffuseBuffer0, indirectDiffuseHistoryHF, intermediateBuffer1);
HDTemporalFilter.DenoiseBuffer(cmd, tfParameters, tfResources);
// Apply the first pass of our denoiser
HDDiffuseDenoiser diffuseDenoiser = GetDiffuseDenoiser();
DiffuseDenoiserParameters ddParams = diffuseDenoiser.PrepareDiffuseDenoiserParameters(hdCamera, false, settings.denoiserRadius, settings.halfResolutionDenoiser, settings.secondDenoiserPass);
RTHandle intermediateBuffer = GetRayTracingBuffer(InternalRayTracingBuffers.RGBA0);
DiffuseDenoiserResources ddResources = diffuseDenoiser.PrepareDiffuseDenoiserResources(intermediateBuffer1, intermediateBuffer, m_IndirectDiffuseBuffer0);
HDDiffuseDenoiser.DenoiseBuffer(cmd, ddParams, ddResources);
// If the second pass is requested, do it otherwise blit
if (settings.secondDenoiserPass)
{
float historyValidity1 = EvaluateIndirectDiffuseHistoryValidity1(hdCamera, settings.fullResolution, true);
// Grab the low frequency history buffer
RTHandle indirectDiffuseHistoryLF = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedIndirectDiffuseLF)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedIndirectDiffuseLF, IndirectDiffuseHistoryBufferAllocatorFunction, 1);
// Run the temporal denoiser
tfParameters = temporalFilter.PrepareTemporalFilterParameters(hdCamera, false, historyValidity1);
tfResources = temporalFilter.PrepareTemporalFilterResources(hdCamera, validationBuffer, m_IndirectDiffuseBuffer0, indirectDiffuseHistoryLF, intermediateBuffer1);
HDTemporalFilter.DenoiseBuffer(cmd, tfParameters, tfResources);
// Run the spatial denoiser
ddParams = diffuseDenoiser.PrepareDiffuseDenoiserParameters(hdCamera, false, settings.denoiserRadius * 0.5f, settings.halfResolutionDenoiser, false);
ddResources = diffuseDenoiser.PrepareDiffuseDenoiserResources(intermediateBuffer1, intermediateBuffer, m_IndirectDiffuseBuffer0);
HDDiffuseDenoiser.DenoiseBuffer(cmd, ddParams, ddResources);
PropagateIndirectDiffuseHistoryValidity1(hdCamera, settings.fullResolution, true);
}
// Propagate the history
PropagateIndirectDiffuseHistoryValidity0(hdCamera, settings.fullResolution, true);
}
public void DenoiseAO(CommandBuffer cmd, HDCamera hdCamera, AmbientOcclusionDenoiseParameters aoDenoiseParameters, AmbientOcclusionDenoiseResources aoDenoiseResources)
{
if (aoDenoiseParameters.denoise)
{
// Apply the temporal denoiser
HDTemporalFilter temporalFilter = m_RenderPipeline.GetTemporalFilter();
temporalFilter.DenoiseBuffer(cmd, hdCamera, aoDenoiseResources.inputTexture, aoDenoiseResources.ambientOcclusionHistory, aoDenoiseResources.intermediateBuffer, historyValidity: aoDenoiseParameters.historyValidity);
// Apply the diffuse denoiser
HDDiffuseDenoiser diffuseDenoiser = m_RenderPipeline.GetDiffuseDenoiser();
diffuseDenoiser.DenoiseBuffer(cmd, hdCamera, aoDenoiseResources.intermediateBuffer, aoDenoiseResources.outputTexture, aoDenoiseParameters.denoiserRadius);
}
else
{
HDUtils.BlitCameraTexture(cmd, aoDenoiseResources.inputTexture, aoDenoiseResources.outputTexture);
}
}
public void DenoiseAO(CommandBuffer cmd, HDCamera hdCamera, AmbientOcclusionDenoiseParameters aoDenoiseParameters, AmbientOcclusionDenoiseResources aoDenoiseResources)
{
if (aoDenoiseParameters.denoise)
{
// Prepare and execute the temporal filter
HDTemporalFilter temporalFilter = m_RenderPipeline.GetTemporalFilter();
TemporalFilterParameters tfParameters = temporalFilter.PrepareTemporalFilterParameters(hdCamera, true, aoDenoiseParameters.historyValidity);
RTHandle validationBuffer = m_RenderPipeline.GetRayTracingBuffer(InternalRayTracingBuffers.R0);
TemporalFilterResources tfResources = temporalFilter.PrepareTemporalFilterResources(hdCamera, validationBuffer, aoDenoiseResources.inputTexture, aoDenoiseResources.ambientOcclusionHistory, aoDenoiseResources.intermediateBuffer);
HDTemporalFilter.DenoiseBuffer(cmd, tfParameters, tfResources);
// Apply the diffuse denoiser
HDDiffuseDenoiser diffuseDenoiser = m_RenderPipeline.GetDiffuseDenoiser();
DiffuseDenoiserParameters ddParams = diffuseDenoiser.PrepareDiffuseDenoiserParameters(hdCamera, true, aoDenoiseParameters.denoiserRadius, false);
RTHandle intermediateBuffer = m_RenderPipeline.GetRayTracingBuffer(InternalRayTracingBuffers.RGBA0);
DiffuseDenoiserResources ddResources = diffuseDenoiser.PrepareDiffuseDenoiserResources(aoDenoiseResources.intermediateBuffer, intermediateBuffer, aoDenoiseResources.outputTexture);
HDDiffuseDenoiser.DenoiseBuffer(cmd, ddParams, ddResources);
}
else
{
HDUtils.BlitCameraTexture(cmd, aoDenoiseResources.inputTexture, aoDenoiseResources.outputTexture);
}
}
public void RenderAO(HDCamera hdCamera, CommandBuffer cmd, RTHandle outputTexture, ScriptableRenderContext renderContext, int frameCount)
{
// Let's check all the resources
HDRaytracingEnvironment rtEnvironment = m_RaytracingManager.CurrentEnvironment();
BlueNoise blueNoise = m_RaytracingManager.GetBlueNoiseManager();
// Check if the state is valid for evaluating ambient occlusion
bool invalidState = rtEnvironment == null;
// If any of the previous requirements is missing, the effect is not requested or no acceleration structure, set the default one and leave right away
if (invalidState)
{
SetDefaultAmbientOcclusionTexture(cmd);
return;
}
RayTracingShader aoShader = m_PipelineRayTracingResources.aoRaytracing;
var aoSettings = VolumeManager.instance.stack.GetComponent <AmbientOcclusion>();
// Grab the acceleration structure for the target camera
RayTracingAccelerationStructure accelerationStructure = m_RaytracingManager.RequestAccelerationStructure(rtEnvironment.aoLayerMask);
// Define the shader pass to use for the reflection pass
cmd.SetRayTracingShaderPass(aoShader, "VisibilityDXR");
// Set the acceleration structure for the pass
cmd.SetRayTracingAccelerationStructure(aoShader, HDShaderIDs._RaytracingAccelerationStructureName, accelerationStructure);
// Inject the ray generation data
cmd.SetRayTracingFloatParams(aoShader, HDShaderIDs._RaytracingRayBias, rtEnvironment.rayBias);
cmd.SetRayTracingFloatParams(aoShader, HDShaderIDs._RaytracingRayMaxLength, aoSettings.rayLength.value);
cmd.SetRayTracingIntParams(aoShader, HDShaderIDs._RaytracingNumSamples, aoSettings.sampleCount.value);
// Set the data for the ray generation
cmd.SetRayTracingTextureParam(aoShader, HDShaderIDs._DepthTexture, m_SharedRTManager.GetDepthStencilBuffer());
cmd.SetRayTracingTextureParam(aoShader, HDShaderIDs._NormalBufferTexture, m_SharedRTManager.GetNormalBuffer());
int frameIndex = hdCamera.IsTAAEnabled() ? hdCamera.taaFrameIndex : (int)frameCount % 8;
cmd.SetGlobalInt(HDShaderIDs._RaytracingFrameIndex, frameIndex);
// Inject the ray-tracing sampling data
blueNoise.BindDitheredRNGData8SPP(cmd);
// Value used to scale the ao intensity
cmd.SetRayTracingFloatParam(aoShader, HDShaderIDs._RaytracingAOIntensity, aoSettings.intensity.value);
cmd.SetRayTracingIntParam(aoShader, HDShaderIDs._RayCountEnabled, m_RaytracingManager.rayCountManager.RayCountIsEnabled());
cmd.SetRayTracingTextureParam(aoShader, HDShaderIDs._RayCountTexture, m_RaytracingManager.rayCountManager.GetRayCountTexture());
// Set the output textures
cmd.SetRayTracingTextureParam(aoShader, HDShaderIDs._AmbientOcclusionTextureRW, m_AOIntermediateBuffer0);
// Run the computation
cmd.DispatchRays(aoShader, m_RayGenShaderName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, (uint)hdCamera.viewCount);
using (new ProfilingSample(cmd, "Filter Ambient Occlusion", CustomSamplerId.RaytracingAmbientOcclusion.GetSampler()))
{
if (aoSettings.denoise.value)
{
// Grab the history buffer
RTHandle ambientOcclusionHistory = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedAmbientOcclusion)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedAmbientOcclusion, AmbientOcclusionHistoryBufferAllocatorFunction, 1);
// Apply the temporal denoiser
HDTemporalFilter temporalFilter = m_RaytracingManager.GetTemporalFilter();
temporalFilter.DenoiseBuffer(cmd, hdCamera, m_AOIntermediateBuffer0, ambientOcclusionHistory, m_AOIntermediateBuffer1);
// Apply the diffuse denoiser
HDDiffuseDenoiser diffuseDenoiser = m_RaytracingManager.GetDiffuseDenoiser();
diffuseDenoiser.DenoiseBuffer(cmd, hdCamera, m_AOIntermediateBuffer1, outputTexture, aoSettings.denoiserRadius.value);
}
else
{
HDUtils.BlitCameraTexture(cmd, m_AOIntermediateBuffer0, outputTexture);
}
}
// Bind the textures and the params
cmd.SetGlobalTexture(HDShaderIDs._AmbientOcclusionTexture, outputTexture);
cmd.SetGlobalVector(HDShaderIDs._AmbientOcclusionParam, new Vector4(0f, 0f, 0f, VolumeManager.instance.stack.GetComponent <AmbientOcclusion>().directLightingStrength.value));
// TODO: All the push-debug stuff should be centralized somewhere
(RenderPipelineManager.currentPipeline as HDRenderPipeline).PushFullScreenDebugTexture(hdCamera, cmd, outputTexture, FullScreenDebugMode.SSAO);
}
public void RenderAO(HDCamera hdCamera, CommandBuffer cmd, RTHandle outputTexture, ShaderVariablesRaytracing globalCB, ScriptableRenderContext renderContext, int frameCount)
{
// If any of the previous requirements is missing, the effect is not requested or no acceleration structure, set the default one and leave right away
if (!m_RenderPipeline.GetRayTracingState())
{
SetDefaultAmbientOcclusionTexture(cmd);
return;
}
RayTracingShader aoShader = m_PipelineRayTracingResources.aoRaytracing;
var aoSettings = hdCamera.volumeStack.GetComponent <AmbientOcclusion>();
RayCountManager rayCountManager = m_RenderPipeline.GetRayCountManager();
using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.RaytracingAmbientOcclusion)))
{
// Grab the acceleration structure for the target camera
RayTracingAccelerationStructure accelerationStructure = m_RenderPipeline.RequestAccelerationStructure();
// Define the shader pass to use for the reflection pass
cmd.SetRayTracingShaderPass(aoShader, "VisibilityDXR");
// Set the acceleration structure for the pass
cmd.SetRayTracingAccelerationStructure(aoShader, HDShaderIDs._RaytracingAccelerationStructureName, accelerationStructure);
// Inject the ray generation data (be careful of the global constant buffer limitation)
globalCB._RaytracingRayMaxLength = aoSettings.rayLength;
globalCB._RaytracingNumSamples = aoSettings.sampleCount;
ConstantBuffer.PushGlobal(cmd, globalCB, HDShaderIDs._ShaderVariablesRaytracing);
// Set the data for the ray generation
cmd.SetRayTracingTextureParam(aoShader, HDShaderIDs._DepthTexture, m_RenderPipeline.sharedRTManager.GetDepthStencilBuffer());
cmd.SetRayTracingTextureParam(aoShader, HDShaderIDs._NormalBufferTexture, m_RenderPipeline.sharedRTManager.GetNormalBuffer());
// Inject the ray-tracing sampling data
BlueNoise blueNoise = m_RenderPipeline.GetBlueNoiseManager();
blueNoise.BindDitheredRNGData8SPP(cmd);
// Value used to scale the ao intensity
cmd.SetRayTracingFloatParam(aoShader, HDShaderIDs._RaytracingAOIntensity, aoSettings.intensity.value);
// Set the output textures
cmd.SetRayTracingTextureParam(aoShader, HDShaderIDs._RayCountTexture, rayCountManager.GetRayCountTexture());
cmd.SetRayTracingTextureParam(aoShader, HDShaderIDs._AmbientOcclusionTextureRW, m_AOIntermediateBuffer0);
// Run the computation
cmd.DispatchRays(aoShader, m_RayGenShaderName, (uint)hdCamera.actualWidth, (uint)hdCamera.actualHeight, (uint)hdCamera.viewCount);
}
using (new ProfilingScope(cmd, ProfilingSampler.Get(HDProfileId.RaytracingFilterAmbientOcclusion)))
{
if (aoSettings.denoise)
{
// Grab the history buffer
RTHandle ambientOcclusionHistory = hdCamera.GetCurrentFrameRT((int)HDCameraFrameHistoryType.RaytracedAmbientOcclusion)
?? hdCamera.AllocHistoryFrameRT((int)HDCameraFrameHistoryType.RaytracedAmbientOcclusion, AmbientOcclusionHistoryBufferAllocatorFunction, 1);
float historyValidity = 1.0f;
#if UNITY_HDRP_DXR_TESTS_DEFINE
if (Application.isPlaying)
{
historyValidity = 0.0f;
}
else
#endif
// We need to check if something invalidated the history buffers
historyValidity = m_RenderPipeline.ValidRayTracingHistory(hdCamera) ? 1.0f : 0.0f;
// Apply the temporal denoiser
HDTemporalFilter temporalFilter = m_RenderPipeline.GetTemporalFilter();
temporalFilter.DenoiseBuffer(cmd, hdCamera, m_AOIntermediateBuffer0, ambientOcclusionHistory, m_AOIntermediateBuffer1, historyValidity: historyValidity);
// Apply the diffuse denoiser
HDDiffuseDenoiser diffuseDenoiser = m_RenderPipeline.GetDiffuseDenoiser();
diffuseDenoiser.DenoiseBuffer(cmd, hdCamera, m_AOIntermediateBuffer1, outputTexture, aoSettings.denoiserRadius);
}
else
{
HDUtils.BlitCameraTexture(cmd, m_AOIntermediateBuffer0, outputTexture);
}
}
// Bind the textures and the params
cmd.SetGlobalTexture(HDShaderIDs._AmbientOcclusionTexture, outputTexture);
// TODO: All the push-debug stuff should be centralized somewhere
(RenderPipelineManager.currentPipeline as HDRenderPipeline).PushFullScreenDebugTexture(hdCamera, cmd, outputTexture, FullScreenDebugMode.SSAO);
}