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UnrealEngineUWP/Engine/Source/Runtime/RenderCore/Private/BuiltInRayTracingShaders.cpp

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Updating copyright for Engine Runtime. #rnx #rb none #ROBOMERGE-OWNER: ryan.durand #ROBOMERGE-AUTHOR: ryan.durand #ROBOMERGE-SOURCE: CL 10869210 via CL 10869511 via CL 10869900 #ROBOMERGE-BOT: (v613-10869866) [CL 10870549 by ryan durand in Main branch]
2019-12-26 14:45:42 -05:00
// Copyright Epic Games, Inc. All Rights Reserved.
Copying //UE4/Dev-Rendering-HLR@4669539 to Dev-Rendering (//UE4/Dev-Rendering) #rb none #lockdown rolando.caloca [CL 4669551 by Marcus Wassmer in Dev-Rendering branch]
2018-12-18 21:41:17 -05:00
#include "BuiltInRayTracingShaders.h"
Implemented support for indirect ray tracing dispatch in D3D12 / DXR 1.1. #rb Kenzo.Terelst #jira UE-106035 [CL 15036968 by Yuriy ODonnell in ue5-main branch]
2021-01-11 09:49:56 -04:00
#include "ShaderParameterUtils.h"
Deprecating RHI*CommandList::SetComputeShader and switching uses to the PSO cache's SetComputePipelineState. This is to get compute shaders in our PSO cache lists as well as move towards ComputePipelineState as the default binding method. #jira none #rb arciel.rekman, mihnea.balta, jeannoe.morissette #preflight 6202a549e85c7a08bbee815f [CL 18905326 by christopher waters in ue5-main branch]
2022-02-08 13:19:37 -05:00
#include "PipelineStateCache.h"
Fix incorrect material appearance on raytracing material with Strata enabled * Add adaptive RT material payload for Strata. * Centralize all Strata settings in RenderCore/RenderUtils.h to ensure consistency #rb chris.kulla #jira none #preflight 63d43bcff626715201a0ed1d [FYI] sebastien.hillaire [CL 23923301 by charles derousiers in ue5-main branch]
2023-01-31 01:12:18 -05:00
#include "RendererInterface.h"
Copying //UE4/Dev-Rendering-HLR@4669539 to Dev-Rendering (//UE4/Dev-Rendering) #rb none #lockdown rolando.caloca [CL 4669551 by Marcus Wassmer in Dev-Rendering branch]
2018-12-18 21:41:17 -05:00
#if RHI_RAYTRACING
Hide unused payload structs from shaders which did not declare them This is meant to help avoid inconsistencies between GetRayTracingPayloadType() and the shader code. As an example of the usage, convert RayTracingDebug related shaders to only enable the payload conditionally. Fix the current incorrect mixing of payload uses in the same shader by introducing a permutation for the material version of the debug shader vs. the one that uses the debug payload (this was previously a runtime shader parameter only which implied two different payloads could theoretically be compiled into one RTPSO). Also conditionaly enable some of the simpler payload types like the niagara and decal ones that are only used in a few places. Other payloads will be handled in future refactors. Split RayTracingDebug.usf into smaller files that only have one raytracing entry in them to reduce the amount of counditional logic needed around payloads. #rb Yuriy.ODonnell #jira none #preflight 635c49e9ae6840072d4df82f [CL 22849513 by chris kulla in ue5-main branch]
2022-10-28 23:28:11 -04:00
#include "RayTracingPayloadType.h"
Substrata - ray tracing material shaders uses fully simplified material for smaller payload. Next would be to have the fully simplified mode disable anisotropy to have an even lower payload size. #rb charles.derousiers #preflight https://horde.devtools.epicgames.com/job/6422ad44973e609670e855c8 [CL 24815921 by Sebastien Hillaire in ue5-main branch]
2023-03-28 05:25:01 -04:00
uint32 GetRaytracingMaterialPayloadSizeFullySimplified()
Fix incorrect material appearance on raytracing material with Strata enabled * Add adaptive RT material payload for Strata. * Centralize all Strata settings in RenderCore/RenderUtils.h to ensure consistency #rb chris.kulla #jira none #preflight 63d43bcff626715201a0ed1d [FYI] sebastien.hillaire [CL 23923301 by charles derousiers in ue5-main branch]
2023-01-31 01:12:18 -05:00
{
Lof elements that were not renamed yet. - MSM_Substrate - MCT_Substrate - FStrataMaterialInput #rb charles.derousiers [CL 27563163 by marc audy in ue5-main branch]
2023-09-01 15:06:19 -04:00
if (Substrate::IsSubstrateEnabled())
Substrate - updated / clarified ray tracing common payload byte count to really reflect what is shader dependent and what is Subsutrate dependent. #rb none #preflight none #fyi charles.derousiers [CL 24801328 by Sebastien Hillaire in ue5-main branch]
2023-03-27 08:31:19 -04:00
{
Lof elements that were not renamed yet. - MSM_Substrate - MCT_Substrate - FStrataMaterialInput #rb charles.derousiers [CL 27563163 by marc audy in ue5-main branch]
2023-09-01 15:06:19 -04:00
// All the data from FPackedMaterialClosestHitPayload except FSubstrateRaytracingPayload (see RayTracingCommon.ush)
Substrate - updated / clarified ray tracing common payload byte count to really reflect what is shader dependent and what is Subsutrate dependent. #rb none #preflight none #fyi charles.derousiers [CL 24801328 by Sebastien Hillaire in ue5-main branch]
2023-03-27 08:31:19 -04:00
uint32 PayloadSizeBytes = 6 * sizeof(uint32);
Lof elements that were not renamed yet. - MSM_Substrate - MCT_Substrate - FStrataMaterialInput #rb charles.derousiers [CL 27563163 by marc audy in ue5-main branch]
2023-09-01 15:06:19 -04:00
// The remaining data from FSubstrateRaytracingPayload.
Substrata - ray tracing material shaders uses fully simplified material for smaller payload. Next would be to have the fully simplified mode disable anisotropy to have an even lower payload size. #rb charles.derousiers #preflight https://horde.devtools.epicgames.com/job/6422ad44973e609670e855c8 [CL 24815921 by Sebastien Hillaire in ue5-main branch]
2023-03-28 05:25:01 -04:00
const bool bFullySimplifiedMaterial = true; // This is needed because ERayTracingPayloadType::RayTracingMaterial will be fully simplified, see FShaderType::ModifyCompilationEnvironment.
Lof elements that were not renamed yet. - MSM_Substrate - MCT_Substrate - FStrataMaterialInput #rb charles.derousiers [CL 27563163 by marc audy in ue5-main branch]
2023-09-01 15:06:19 -04:00
PayloadSizeBytes += Substrate::GetRayTracingMaterialPayloadSizeInBytes(bFullySimplifiedMaterial);
Substrate - updated / clarified ray tracing common payload byte count to really reflect what is shader dependent and what is Subsutrate dependent. #rb none #preflight none #fyi charles.derousiers [CL 24801328 by Sebastien Hillaire in ue5-main branch]
2023-03-27 08:31:19 -04:00
return PayloadSizeBytes;
}
return 64u;
Fix incorrect material appearance on raytracing material with Strata enabled * Add adaptive RT material payload for Strata. * Centralize all Strata settings in RenderCore/RenderUtils.h to ensure consistency #rb chris.kulla #jira none #preflight 63d43bcff626715201a0ed1d [FYI] sebastien.hillaire [CL 23923301 by charles derousiers in ue5-main branch]
2023-01-31 01:12:18 -05:00
}
Ray Tracing: Compute the maximum payload size from the shader's payload type Serialize the payload size as part of the raytracing shader so it can be examined in the RHI layer. Validate that the RTPSO is configured with the appropriate payload size. Add macros to ensure the payloads have the expected size Ensure that all raytracing pipelines explicitly bind a miss shader Add a shared shader header to implement static asserts for those shader compilers that support them (like dxc). Fix payload type on main deferred reflection raygen shader Fix incorrect raygen shader included in the deferred RTPSO list for RTGI Don't add builtin shaders to the RTPSO from the RHI layer as these are unlikely to ever match the required payload type Add new method to register payload types so that plugins can more easily describe custom payloads they may be using (up to a maximum of 32 unique payload types since we use a bitmask to represent payload sets). #rb Yuriy.ODonnell #jira UE-157946 #preflight 636aff4363037c102679f13a #preflight 63869dde170bc34a93e8c90e [CL 23337139 by chris kulla in ue5-main branch]
2022-11-30 13:53:00 -05:00
IMPLEMENT_RT_PAYLOAD_TYPE(ERayTracingPayloadType::Default, 24);
Substrata - ray tracing material shaders uses fully simplified material for smaller payload. Next would be to have the fully simplified mode disable anisotropy to have an even lower payload size. #rb charles.derousiers #preflight https://horde.devtools.epicgames.com/job/6422ad44973e609670e855c8 [CL 24815921 by Sebastien Hillaire in ue5-main branch]
2023-03-28 05:25:01 -04:00
IMPLEMENT_RT_PAYLOAD_TYPE_FUNCTION(ERayTracingPayloadType::RayTracingMaterial, GetRaytracingMaterialPayloadSizeFullySimplified);
Ray Tracing: Compute the maximum payload size from the shader's payload type Serialize the payload size as part of the raytracing shader so it can be examined in the RHI layer. Validate that the RTPSO is configured with the appropriate payload size. Add macros to ensure the payloads have the expected size Ensure that all raytracing pipelines explicitly bind a miss shader Add a shared shader header to implement static asserts for those shader compilers that support them (like dxc). Fix payload type on main deferred reflection raygen shader Fix incorrect raygen shader included in the deferred RTPSO list for RTGI Don't add builtin shaders to the RTPSO from the RHI layer as these are unlikely to ever match the required payload type Add new method to register payload types so that plugins can more easily describe custom payloads they may be using (up to a maximum of 32 unique payload types since we use a bitmask to represent payload sets). #rb Yuriy.ODonnell #jira UE-157946 #preflight 636aff4363037c102679f13a #preflight 63869dde170bc34a93e8c90e [CL 23337139 by chris kulla in ue5-main branch]
2022-11-30 13:53:00 -05:00
Redesign the raytracing payload type tagging to use a function instead of a hardcoded field This allows the raytracing payload type to vary according to shader permutation parameters which is more flexible and simplifies the code for complex cases like Lumen or deferred reflections #rb Yuriy.ODonnell #jira none #preflight 635a8ba96a2a692f5d720eb3 [CL 22809506 by chris kulla in ue5-main branch]
2022-10-27 10:21:14 -04:00
IMPLEMENT_GLOBAL_SHADER( FDefaultPayloadMS, "/Engine/Private/RayTracing/RayTracingBuiltInShaders.usf", "DefaultPayloadMS", SF_RayMiss);
IMPLEMENT_GLOBAL_SHADER( FPackedMaterialClosestHitPayloadMS, "/Engine/Private/RayTracing/RayTracingBuiltInShaders.usf", "PackedMaterialClosestHitPayloadMS", SF_RayMiss);
Implemented support for indirect ray tracing dispatch in D3D12 / DXR 1.1. #rb Kenzo.Terelst #jira UE-106035 [CL 15036968 by Yuriy ODonnell in ue5-main branch]
2021-01-11 09:49:56 -04:00
IMPLEMENT_GLOBAL_SHADER(FRayTracingDispatchDescCS, "/Engine/Private/RayTracing/RayTracingDispatchDesc.usf", "RayTracingDispatchDescCS", SF_Compute);
Hide unused payload structs from shaders which did not declare them This is meant to help avoid inconsistencies between GetRayTracingPayloadType() and the shader code. As an example of the usage, convert RayTracingDebug related shaders to only enable the payload conditionally. Fix the current incorrect mixing of payload uses in the same shader by introducing a permutation for the material version of the debug shader vs. the one that uses the debug payload (this was previously a runtime shader parameter only which implied two different payloads could theoretically be compiled into one RTPSO). Also conditionaly enable some of the simpler payload types like the niagara and decal ones that are only used in a few places. Other payloads will be handled in future refactors. Split RayTracingDebug.usf into smaller files that only have one raytracing entry in them to reduce the amount of counditional logic needed around payloads. #rb Yuriy.ODonnell #jira none #preflight 635c49e9ae6840072d4df82f [CL 22849513 by chris kulla in ue5-main branch]
2022-10-28 23:28:11 -04:00
ERayTracingPayloadType FDefaultPayloadMS::GetRayTracingPayloadType(const int32 PermutationId)
{
return ERayTracingPayloadType::Default;
}
ERayTracingPayloadType FPackedMaterialClosestHitPayloadMS::GetRayTracingPayloadType(const int32 PermutationId)
{
return ERayTracingPayloadType::RayTracingMaterial;
}
Implemented support for indirect ray tracing dispatch in D3D12 / DXR 1.1. #rb Kenzo.Terelst #jira UE-106035 [CL 15036968 by Yuriy ODonnell in ue5-main branch]
2021-01-11 09:49:56 -04:00
void FRayTracingDispatchDescCS::Dispatch(FRHICommandList& RHICmdList,
const void* DispatchDescInput, uint32 DispatchDescSize, uint32 DispatchDescDimensionsOffset,
FRHIShaderResourceView* DispatchDimensionsSRV, uint32 DimensionsBufferOffset,
FRHIUnorderedAccessView* DispatchDescOutputUAV)
{
const uint32 DispatchDescSizeDwords = DispatchDescSize / 4;
const uint32 DispatchDescDimensionsOffsetDwords = DispatchDescDimensionsOffset / 4;
checkf(DimensionsBufferOffset % 4 == 0, TEXT("Dispatch dimensions buffer offset must be DWORD-aligned"));
const uint32 DimensionsBufferOffsetDwords = DimensionsBufferOffset / 4;
check(DispatchDescSizeDwords <= DispatchDescMaxSizeDwords);
TShaderMapRef<FRayTracingDispatchDescCS> ComputeShader(GetGlobalShaderMap(GMaxRHIFeatureLevel));
FRHIComputeShader* ShaderRHI = ComputeShader.GetComputeShader();
Deprecating RHI*CommandList::SetComputeShader and switching uses to the PSO cache's SetComputePipelineState. This is to get compute shaders in our PSO cache lists as well as move towards ComputePipelineState as the default binding method. #jira none #rb arciel.rekman, mihnea.balta, jeannoe.morissette #preflight 6202a549e85c7a08bbee815f [CL 18905326 by christopher waters in ue5-main branch]
2022-02-08 13:19:37 -05:00
SetComputePipelineState(RHICmdList, ShaderRHI);
Implemented support for indirect ray tracing dispatch in D3D12 / DXR 1.1. #rb Kenzo.Terelst #jira UE-106035 [CL 15036968 by Yuriy ODonnell in ue5-main branch]
2021-01-11 09:49:56 -04:00
static_assert(DispatchDescMaxSizeDwords % 4 == 0, "DispatchDescMaxSizeDwords must be a multiple of 4");
static constexpr uint32 DispatchDescMaxSizeUint4s = DispatchDescMaxSizeDwords / 4;
FUintVector4 DispatchDescData[DispatchDescMaxSizeUint4s] = {};
FMemory::Memcpy(DispatchDescData, DispatchDescInput, DispatchDescSize);
Adding more widespread use of FRHIBatchedShaderParameters - RHI Command lists now have their own "scratch" batched parameters for code setting parameters to use. The parameters are reset when the scratch is returned so it's up to the callers to actually set them on the command list. - Enabling Uniform Buffers in batched shader parameters from shader parameter structs. - Changing MeshPassProcessor to use FRHIBatchedShaderParameters instead of its own type. - Updating BasePassRendering to use FRHIBatchedShaderParameters. #rb zach.bethel #preflight 63dd54a34d25c400b7c040a6 [CL 23996881 by christopher waters in ue5-main branch]
2023-02-03 15:45:12 -05:00
FRHIBatchedShaderParameters& BatchedParameters = RHICmdList.GetScratchShaderParameters();
Implemented support for indirect ray tracing dispatch in D3D12 / DXR 1.1. #rb Kenzo.Terelst #jira UE-106035 [CL 15036968 by Yuriy ODonnell in ue5-main branch]
2021-01-11 09:49:56 -04:00
Starting to convert shader classes to use FRHIBatchedShaderParameters to set parameters instead of setting them on the RHICommandList themselves. #rb luke.thatcher #preflight 63dd4092c2257e56f4a125cf [CL 23993657 by christopher waters in ue5-main branch]
2023-02-03 13:03:11 -05:00
SetShaderValueArray(BatchedParameters, ComputeShader->DispatchDescInputParam, DispatchDescData, DispatchDescMaxSizeUint4s);
SetShaderValue(BatchedParameters, ComputeShader->DispatchDescSizeDwordsParam, DispatchDescSizeDwords);
SetShaderValue(BatchedParameters, ComputeShader->DispatchDescDimensionsOffsetDwordsParam, DispatchDescDimensionsOffsetDwords);
SetShaderValue(BatchedParameters, ComputeShader->DimensionsBufferOffsetDwordsParam, DimensionsBufferOffsetDwords);
SetSRVParameter(BatchedParameters, ComputeShader->DispatchDimensionsParam, DispatchDimensionsSRV);
SetUAVParameter(BatchedParameters, ComputeShader->DispatchDescOutputParam, DispatchDescOutputUAV);
RHICmdList.SetBatchedShaderParameters(ComputeShader.GetComputeShader(), BatchedParameters);
Implemented support for indirect ray tracing dispatch in D3D12 / DXR 1.1. #rb Kenzo.Terelst #jira UE-106035 [CL 15036968 by Yuriy ODonnell in ue5-main branch]
2021-01-11 09:49:56 -04:00
RHICmdList.DispatchComputeShader(1, 1, 1);
Don't add unbind commands if the RHI doesn't do anything with them. - Discovered that a number of RHISetShaderResourceViewParameter and RHISetUAVParameter implementations do nothing with null resources, meaning that RHISetShaderUnbinds calls end up doing zero work with all the overhead. - Adding GRHIGlobals::NeedsShaderUnbinds for RHIs to signal they need/handle unbind commands. - RHIs that actually do work with RHISetShaderUnbinds now set NeedsShaderUnbinds on startup. - Removed RHISetShaderUnbinds implementations that did zero work. #rb luke.thatcher [CL 27554898 by christopher waters in ue5-main branch]
2023-09-01 10:28:05 -04:00
if (RHICmdList.NeedsShaderUnbinds())
{
FRHIBatchedShaderUnbinds& BatchedUnbinds = RHICmdList.GetScratchShaderUnbinds();
Starting to convert shader classes to use FRHIBatchedShaderParameters to set parameters instead of setting them on the RHICommandList themselves. #rb luke.thatcher #preflight 63dd4092c2257e56f4a125cf [CL 23993657 by christopher waters in ue5-main branch]
2023-02-03 13:03:11 -05:00
Don't add unbind commands if the RHI doesn't do anything with them. - Discovered that a number of RHISetShaderResourceViewParameter and RHISetUAVParameter implementations do nothing with null resources, meaning that RHISetShaderUnbinds calls end up doing zero work with all the overhead. - Adding GRHIGlobals::NeedsShaderUnbinds for RHIs to signal they need/handle unbind commands. - RHIs that actually do work with RHISetShaderUnbinds now set NeedsShaderUnbinds on startup. - Removed RHISetShaderUnbinds implementations that did zero work. #rb luke.thatcher [CL 27554898 by christopher waters in ue5-main branch]
2023-09-01 10:28:05 -04:00
UnsetSRVParameter(BatchedUnbinds, ComputeShader->DispatchDimensionsParam);
UnsetUAVParameter(BatchedUnbinds, ComputeShader->DispatchDescOutputParam);
RHICmdList.SetBatchedShaderUnbinds(ComputeShader.GetComputeShader(), BatchedUnbinds);
}
Implemented support for indirect ray tracing dispatch in D3D12 / DXR 1.1. #rb Kenzo.Terelst #jira UE-106035 [CL 15036968 by Yuriy ODonnell in ue5-main branch]
2021-01-11 09:49:56 -04:00
}
Copying //UE4/Dev-Rendering-HLR@4669539 to Dev-Rendering (//UE4/Dev-Rendering) #rb none #lockdown rolando.caloca [CL 4669551 by Marcus Wassmer in Dev-Rendering branch]
2018-12-18 21:41:17 -05:00
#endif // RHI_RAYTRACING
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