diff --git a/Hydrogent/include/Computations/HnSkinningComputation.hpp b/Hydrogent/include/Computations/HnSkinningComputation.hpp index c3218062..4faf5f11 100644 --- a/Hydrogent/include/Computations/HnSkinningComputation.hpp +++ b/Hydrogent/include/Computations/HnSkinningComputation.hpp @@ -59,7 +59,7 @@ class HnSkinningComputation final : public HnExtComputationImpl static bool IsCompatible(const HnExtComputation& Owner); const pxr::VtMatrix4fArray& GetXforms() const { return m_Xforms[m_CurrXformsIdx]; } - const pxr::VtMatrix4fArray& GetLastFrameXforms() const { return m_Xforms[1 - m_CurrXformsIdx]; } + const pxr::VtMatrix4fArray& GetPrevFrameXforms(Uint32 FrameNumber) const; size_t GetXformsHash() const { return m_XformsHash; } const float4x4& GetPrimWorldToLocal() const { return m_PrimWorldToLocal; } @@ -75,6 +75,8 @@ class HnSkinningComputation final : public HnExtComputationImpl float4x4 m_PrimWorldToLocal = float4x4::Identity(); float4x4 m_SkelLocalToWorld = float4x4::Identity(); float4x4 m_SkelLocalToPrimLocal = float4x4::Identity(); + + Uint32 m_LastXformSyncFrameNumber = 0; }; } // namespace USD diff --git a/Hydrogent/interface/HnMesh.hpp b/Hydrogent/interface/HnMesh.hpp index 1e942ca4..8eaf048b 100644 --- a/Hydrogent/interface/HnMesh.hpp +++ b/Hydrogent/interface/HnMesh.hpp @@ -56,7 +56,7 @@ namespace USD { class HnRenderDelegate; -class HnExtComputation; +class HnSkinningComputation; /// Hydra mesh implementation in Hydrogent. class HnMesh final : public pxr::HdMesh @@ -112,12 +112,11 @@ class HnMesh final : public pxr::HdMesh struct Skinning { - const pxr::VtMatrix4fArray* Xforms = nullptr; - const pxr::VtMatrix4fArray* LastFrameXforms = nullptr; - size_t XformsHash = 0; - float4x4 GeomBindXform = float4x4::Identity(); + const HnSkinningComputation* Computation = nullptr; - explicit operator bool() const { return Xforms != nullptr; } + float4x4 GeomBindXform = float4x4::Identity(); + + explicit operator bool() const { return Computation != nullptr; } }; }; diff --git a/Hydrogent/interface/HnRenderPass.hpp b/Hydrogent/interface/HnRenderPass.hpp index 395bed33..f9246957 100644 --- a/Hydrogent/interface/HnRenderPass.hpp +++ b/Hydrogent/interface/HnRenderPass.hpp @@ -47,6 +47,7 @@ namespace USD class HnDrawItem; class HnRenderPassState; class HnMaterial; +class HnSkinningComputation; struct HnRenderPassParams { @@ -165,17 +166,27 @@ class HnRenderPass final : public pxr::HdRenderPass PBR_Renderer::PSO_FLAGS PSOFlags = PBR_Renderer::PSO_FLAG_NONE; - const pxr::VtMatrix4fArray* PrevXforms = nullptr; - float4x4 PrevTransform = float4x4::Identity(); + float4x4 PrevTransform = float4x4::Identity(); // Primitive attributes shader data size computed from the value of PSOFlags. // Note: unshaded (aka wireframe/point) rendering modes don't use any textures, so the shader data // is smaller than that for the shaded mode. - Uint32 ShaderAttribsDataSize = 0; + Uint16 ShaderAttribsDataSize = 0; // Primitive attributes buffer range used to set the cbPrimitiveAttribs buffer // in the material's SRB. - Uint32 PrimitiveAttribsBufferRange = 0; + Uint16 PrimitiveAttribsBufferRange = 0; + + // Joints data index in m_DrawItemJoints. + // Mutiple draw items can share the same joints data. + // + // Draw Items [ 0 ][ 0 ][ -1 ][ 1 ][ 1 ] + // | | | | + // |.----' .-----------'------' + // V V + // Joints Data [ ][ ] + // + Uint32 JointsIdx = ~0u; IBuffer* IndexBuffer = nullptr; @@ -190,9 +201,11 @@ class HnRenderPass final : public pxr::HdRenderPass }; void UpdateDrawList(const pxr::TfTokenVector& RenderTags); + void UpdateDrawListJoints(HnRenderDelegate& RenderDelegate); void UpdateDrawListGPUResources(RenderState& State); void UpdateDrawListItemGPUResources(DrawListItem& ListItem, RenderState& State, DRAW_LIST_ITEM_DIRTY_FLAGS DirtyFlags); + void WriteJointsDataBatch(RenderState& State, Uint32 BatchIdx, PBR_Renderer::PSO_FLAGS PSOFlags); void RenderPendingDrawItems(RenderState& State); GraphicsPipelineDesc GetGraphicsDesc(const HnRenderPassState& RPState, bool UseStripTopology) const; @@ -226,6 +239,24 @@ class HnRenderPass final : public pxr::HdRenderPass // Rendering order of the draw list items sorted by the PSO. std::vector m_RenderOrder; + struct DrawItemJointsData + { + Uint32 BatchIdx = ~0u; + Uint32 BufferOffset = ~0u; + Uint32 JointCount = 0; + Uint32 FirstJoint = 0; + Uint32 DataSize = 0; + + const HnSkinningComputation* SkinComp = nullptr; + + constexpr operator bool() const noexcept + { + return BatchIdx != ~0u; + } + }; + std::vector m_DrawItemJoints; + size_t m_CurrDrawItemJointIdx = 0; + // Scratch space to prepare data for the primitive attributes buffer. std::vector m_PrimitiveAttribsData; diff --git a/Hydrogent/src/Computations/HnSkinningComputation.cpp b/Hydrogent/src/Computations/HnSkinningComputation.cpp index 8d987de0..b8f7cef7 100644 --- a/Hydrogent/src/Computations/HnSkinningComputation.cpp +++ b/Hydrogent/src/Computations/HnSkinningComputation.cpp @@ -27,6 +27,7 @@ #include "Computations/HnSkinningComputation.hpp" #include "HnExtComputation.hpp" #include "HnTokens.hpp" +#include "HnRenderParam.hpp" #include "DebugUtilities.hpp" #include "GfTypeConversions.hpp" #include "HnRenderDelegate.hpp" @@ -74,17 +75,15 @@ void HnSkinningComputation::Sync(pxr::HdSceneDelegate* SceneDelegate, pxr::VtValue SkinningXformsVal = SceneDelegate->GetExtComputationInput(Id, HnSkinningComputationPrivateTokens->skinningXforms); if (SkinningXformsVal.IsHolding()) { - pxr::VtMatrix4fArray& LastXforms = m_Xforms[m_CurrXformsIdx]; VERIFY_EXPR(m_Xforms.size() == 2); m_CurrXformsIdx = 1 - m_CurrXformsIdx; pxr::VtMatrix4fArray& Xforms = m_Xforms[m_CurrXformsIdx]; - Xforms = SkinningXformsVal.UncheckedGet(); - if (LastXforms.empty()) - LastXforms = Xforms; - + Xforms = SkinningXformsVal.UncheckedGet(); m_XformsHash = pxr::TfHash{}(Xforms); + m_LastXformSyncFrameNumber = static_cast(RenderParam)->GetFrameNumber(); + const HnRenderDelegate* RenderDelegate = static_cast(SceneDelegate->GetRenderIndex().GetRenderDelegate()); const USD_Renderer& USDRenderer = *RenderDelegate->GetUSDRenderer(); const Uint32 MaxJointCount = USDRenderer.GetSettings().MaxJointCount; @@ -151,6 +150,22 @@ bool HnSkinningComputation::IsCompatible(const HnExtComputation& Owner) return Outputs.size() == 1 && Outputs[0].name == HnSkinningComputationPrivateTokens->skinnedPoints; } +const pxr::VtMatrix4fArray& HnSkinningComputation::GetPrevFrameXforms(Uint32 FrameNumber) const +{ + // Frame number is incremented by HnBeginFrameTask after all computations have been synced. + if (FrameNumber == m_LastXformSyncFrameNumber + 1) + { + const pxr::VtMatrix4fArray& PrevXforms = m_Xforms[1 - m_CurrXformsIdx]; + return !PrevXforms.empty() ? PrevXforms : m_Xforms[m_CurrXformsIdx]; + } + else + { + // Skinning xforms have not been updated for the current frame, so + // they are the same as the previous frame. + return m_Xforms[m_CurrXformsIdx]; + } +} + } // namespace USD } // namespace Diligent diff --git a/Hydrogent/src/HnMesh.cpp b/Hydrogent/src/HnMesh.cpp index 5df9f613..40a4372a 100644 --- a/Hydrogent/src/HnMesh.cpp +++ b/Hydrogent/src/HnMesh.cpp @@ -915,9 +915,7 @@ void HnMesh::UpdateSkinningPrimvars(pxr::HdSceneDelegate& if (const HnSkinningComputation* SkinningCompImpl = SkinningComp->GetImpl()) { - SkinningData.Xforms = &SkinningCompImpl->GetXforms(); - SkinningData.LastFrameXforms = &SkinningCompImpl->GetLastFrameXforms(); - SkinningData.XformsHash = SkinningCompImpl->GetXformsHash(); + SkinningData.Computation = SkinningCompImpl; const float4x4& SkelLocalToPrimLocal = SkinningCompImpl->GetSkelLocalToPrimLocal(); if (SkelLocalToPrimLocal != m_SkelLocalToPrimLocal) diff --git a/Hydrogent/src/HnRenderPass.cpp b/Hydrogent/src/HnRenderPass.cpp index 0f943494..edf754e2 100644 --- a/Hydrogent/src/HnRenderPass.cpp +++ b/Hydrogent/src/HnRenderPass.cpp @@ -32,6 +32,7 @@ #include "HnDrawItem.hpp" #include "HnTypeConversions.hpp" #include "HnRenderParam.hpp" +#include "Computations/HnSkinningComputation.hpp" #include #include @@ -280,6 +281,91 @@ void HnRenderPass::_Execute(const pxr::HdRenderPassStateSharedPtr& RPState, Execute(*static_cast(RPState.get()), Tags); } +void HnRenderPass::WriteJointsDataBatch(RenderState& State, Uint32 BatchIdx, PBR_Renderer::PSO_FLAGS PSOFlags) +{ + IBuffer* const pJointsCB = State.USDRenderer.GetJointsBuffer(); + if (pJointsCB == nullptr) + { + UNEXPECTED("Joints buffer must not be null"); + return; + } + + if (m_CurrDrawItemJointIdx >= m_DrawItemJoints.size()) + { + UNEXPECTED("All joints data has been written"); + return; + } + VERIFY(BatchIdx >= m_DrawItemJoints[m_CurrDrawItemJointIdx].BatchIdx, "Batch indices must be monotonically increasing"); + while (m_CurrDrawItemJointIdx < m_DrawItemJoints.size() && BatchIdx > m_DrawItemJoints[m_CurrDrawItemJointIdx].BatchIdx) + { + ++m_CurrDrawItemJointIdx; + } + if (m_CurrDrawItemJointIdx == m_DrawItemJoints.size()) + { + UNEXPECTED("Unable to find batch index ", BatchIdx); + return; + } + VERIFY(m_DrawItemJoints[m_CurrDrawItemJointIdx].BatchIdx == BatchIdx, "Unexpected batch index"); + VERIFY(m_DrawItemJoints[m_CurrDrawItemJointIdx].BufferOffset == 0, "Joint data batch must start at offset 0"); + + const BufferDesc& JointsBuffDesc = pJointsCB->GetDesc(); + + Uint32 FrameNumber = static_cast(State.RenderDelegate.GetRenderParam())->GetFrameNumber(); + + Uint8* pJointsData = nullptr; + if (JointsBuffDesc.Usage == USAGE_DYNAMIC) + { + State.pCtx->MapBuffer(pJointsCB, MAP_WRITE, MAP_FLAG_DISCARD, reinterpret_cast(pJointsData)); + if (pJointsData == nullptr) + { + LOG_ERROR_MESSAGE("Failed to map joints data buffer '", JointsBuffDesc.Name, "'."); + return; + } + } + else + { + m_JointsData.resize(static_cast(JointsBuffDesc.Size)); + pJointsData = m_JointsData.data(); + } + + Uint32 JointsDataSize = 0; + while (m_CurrDrawItemJointIdx < m_DrawItemJoints.size()) + { + DrawItemJointsData& Joints = m_DrawItemJoints[m_CurrDrawItemJointIdx]; + VERIFY(Joints.BatchIdx != ~0u && Joints.BufferOffset != ~0u, "Joint data is not initialized"); + if (Joints.BatchIdx != BatchIdx) + { + VERIFY(Joints.BatchIdx == BatchIdx + 1, "Batch indices must be monotonically increasing"); + break; + } + + USD_Renderer::WriteSkinningDataAttribs WriteSkinningAttribs{ + PSOFlags, + Joints.JointCount, + reinterpret_cast(Joints.SkinComp->GetXforms().data()), + reinterpret_cast(Joints.SkinComp->GetPrevFrameXforms(FrameNumber).data()), + }; + + JointsDataSize = Joints.BufferOffset + Joints.DataSize; + VERIFY_EXPR(JointsDataSize <= JointsBuffDesc.Size); + void* pDataEnd = State.USDRenderer.WriteSkinningData(pJointsData + Joints.BufferOffset, WriteSkinningAttribs); + VERIFY_EXPR(JointsDataSize >= static_cast(static_cast(pDataEnd) - pJointsData)); + + ++m_CurrDrawItemJointIdx; + } + + if (JointsBuffDesc.Usage == USAGE_DYNAMIC) + { + State.pCtx->UnmapBuffer(pJointsCB, MAP_WRITE); + } + else + { + State.pCtx->UpdateBuffer(pJointsCB, 0, JointsDataSize, m_JointsData.data(), RESOURCE_STATE_TRANSITION_MODE_TRANSITION); + StateTransitionDesc Barrier{pJointsCB, RESOURCE_STATE_UNKNOWN, RESOURCE_STATE_CONSTANT_BUFFER, STATE_TRANSITION_FLAG_UPDATE_STATE}; + State.pCtx->TransitionResourceStates(1, &Barrier); + } +} + HnRenderPass::EXECUTE_RESULT HnRenderPass::Execute(HnRenderPassState& RPState, const pxr::TfTokenVector& Tags) { UpdateDrawList(Tags); @@ -405,82 +491,42 @@ HnRenderPass::EXECUTE_RESULT HnRenderPass::Execute(HnRenderPassState& RPState, c IBuffer* const pPrimitiveAttribsCB = State.RenderDelegate.GetPrimitiveAttribsCB(); VERIFY_EXPR(pPrimitiveAttribsCB != nullptr); - IBuffer* const pJointsCB = State.USDRenderer.GetJointsBuffer(); - const Uint32 MaxJointCount = State.RendererSettings.MaxJointCount; - const bool PackMatrixRowMajor = State.RendererSettings.PackMatrixRowMajor; - - const Uint32 JointsBufferOffsetAlignment = (State.RendererSettings.JointsBufferMode == USD_Renderer::JOINTS_BUFFER_MODE_UNIFORM) ? - State.ConstantBufferOffsetAlignment : - sizeof(float4x4); + const bool PackMatrixRowMajor = State.RendererSettings.PackMatrixRowMajor; const BufferDesc& AttribsBuffDesc = pPrimitiveAttribsCB->GetDesc(); - const BufferDesc& JointsBuffDesc = pJointsCB != nullptr ? pJointsCB->GetDesc() : BufferDesc{}; m_PendingDrawItems.clear(); m_PendingDrawItems.reserve(m_DrawList.size()); void* pMappedPrimitiveData = nullptr; Uint32 AttribsBufferOffset = 0; - void* pMappedJointsData = nullptr; - Uint32 JointsBufferOffset = 0; - Uint32 TotalJointsDataSize = 0; - size_t XformsHash = 0; - Uint32 JointCount = 0; - Uint32 JointsDataRange = 0; - Uint32 JointsDataSize = 0; + Uint32 CurrJointDataBatch = ~0u; + Uint32 CurrJointsBufferOffset = ~0u; + m_CurrDrawItemJointIdx = 0; if (AttribsBuffDesc.Usage != USAGE_DYNAMIC) { m_PrimitiveAttribsData.resize(static_cast(AttribsBuffDesc.Size)); } - if (JointsBuffDesc.Usage != USAGE_DYNAMIC) - { - m_JointsData.resize(static_cast(JointsBuffDesc.Size)); - } auto FlushPendingDraws = [&]() { - auto UnmapOrUpdateBuffer = [pCtx = State.pCtx](IBuffer* pBuffer, - const BufferDesc& BuffDesc, - void*& pMappedData, - const void* pStagingData, - size_t DataSize) { - if (BuffDesc.Usage == USAGE_DYNAMIC) - { - if (pMappedData != nullptr) - { - pCtx->UnmapBuffer(pBuffer, MAP_WRITE); - } - pMappedData = nullptr; - } - else - { - pCtx->UpdateBuffer(pBuffer, 0, DataSize, pStagingData, RESOURCE_STATE_TRANSITION_MODE_TRANSITION); - StateTransitionDesc Barrier{pBuffer, RESOURCE_STATE_UNKNOWN, RESOURCE_STATE_CONSTANT_BUFFER, STATE_TRANSITION_FLAG_UPDATE_STATE}; - pCtx->TransitionResourceStates(1, &Barrier); - } - }; - VERIFY_EXPR(AttribsBufferOffset > 0); VERIFY_EXPR(AttribsBuffDesc.Usage == USAGE_DYNAMIC || AttribsBufferOffset <= m_PrimitiveAttribsData.size()); - UnmapOrUpdateBuffer(pPrimitiveAttribsCB, AttribsBuffDesc, pMappedPrimitiveData, - m_PrimitiveAttribsData.data(), AttribsBufferOffset); - AttribsBufferOffset = 0; - - if (TotalJointsDataSize > 0) + if (AttribsBuffDesc.Usage == USAGE_DYNAMIC) + { + if (pMappedPrimitiveData != nullptr) + { + State.pCtx->UnmapBuffer(pPrimitiveAttribsCB, MAP_WRITE); + } + pMappedPrimitiveData = nullptr; + } + else { - VERIFY_EXPR(JointsBuffDesc.Usage == USAGE_DYNAMIC || TotalJointsDataSize <= m_JointsData.size()); - UnmapOrUpdateBuffer(pJointsCB, JointsBuffDesc, pMappedJointsData, - m_JointsData.data(), TotalJointsDataSize); + State.pCtx->UpdateBuffer(pPrimitiveAttribsCB, 0, AttribsBufferOffset, m_PrimitiveAttribsData.data(), RESOURCE_STATE_TRANSITION_MODE_TRANSITION); + StateTransitionDesc Barrier{pPrimitiveAttribsCB, RESOURCE_STATE_UNKNOWN, RESOURCE_STATE_CONSTANT_BUFFER, STATE_TRANSITION_FLAG_UPDATE_STATE}; + State.pCtx->TransitionResourceStates(1, &Barrier); } - JointsBufferOffset = 0; - TotalJointsDataSize = 0; - // Reset the hash to force updating the joint transforms for the next draw item. - // NB: we can't reuse the transforms at the existing offset because they may be - // overwritten by the next draw item. - XformsHash = 0; - - // NB: do NOT zero-out JointCount, JointsDataRange, and JointsDataSize as they - // are set before FlushPendingDraws() is called. + AttribsBufferOffset = 0; RenderPendingDrawItems(State); VERIFY_EXPR(m_PendingDrawItems.empty()); @@ -529,9 +575,17 @@ HnRenderPass::EXECUTE_RESULT HnRenderPass::Execute(HnRenderPassState& RPState, c const bool MeshVisibile = std::get<2>(MeshAttribs).Val; const PBR_Renderer::PSO_FLAGS PSOFlags = m_UseFallbackPSO ? GetFallbackPSOFlags() : ListItem.PSOFlags; - const HnMesh::Components::Skinning* pSkinningData = ((PSOFlags & PBR_Renderer::PSO_FLAG_USE_JOINTS) && pJointsCB != nullptr) ? + const HnMesh::Components::Skinning* pSkinningData = (PSOFlags & PBR_Renderer::PSO_FLAG_USE_JOINTS) ? &MeshAttribsView.get(ListItem.MeshEntity) : nullptr; + VERIFY(pSkinningData == nullptr || ListItem.JointsIdx != ~0u, "Joints index must be valid if skinning data is present"); + + const DrawItemJointsData& Joints = (PSOFlags & PBR_Renderer::PSO_FLAG_USE_JOINTS) != 0 && ListItem.JointsIdx != ~0u ? + m_DrawItemJoints[ListItem.JointsIdx] : + DrawItemJointsData{}; + VERIFY(((pSkinningData != nullptr ? pSkinningData->Computation->GetXformsHash() : 0) == + (Joints.SkinComp != nullptr ? Joints.SkinComp->GetXformsHash() : 0)), + "Skinning xforms must match the joints data"); if (!MeshVisibile) continue; @@ -539,48 +593,29 @@ HnRenderPass::EXECUTE_RESULT HnRenderPass::Execute(HnRenderPassState& RPState, c if (MultiDrawCount == PrimitiveArraySize) MultiDrawCount = 0; - if (pSkinningData && pSkinningData->XformsHash != XformsHash) + if (Joints) { - // Restart batch when the joint transforms change - MultiDrawCount = 0; - - JointCount = std::min(static_cast(pSkinningData->Xforms->size()), MaxJointCount); - JointsDataSize = State.USDRenderer.GetJointsDataSize(JointCount, PSOFlags); - if (State.RendererSettings.JointsBufferMode == USD_Renderer::JOINTS_BUFFER_MODE_UNIFORM) - { - // RenderPBR.vsh - // - // struct SkinnigData - // { - // # if COMPUTE_MOTION_VECTORS - // float4x4 Joints[MAX_JOINT_COUNT * 2]; - // # else - // float4x4 Joints[MAX_JOINT_COUNT]; - // # endif - // }; - // - // Joints data range is the size of the entire structure with the maximum number of joints. - JointsDataRange = State.USDRenderer.GetJointsDataSize(MaxJointCount, PSOFlags); - } - else if (State.RendererSettings.JointsBufferMode == USD_Renderer::JOINTS_BUFFER_MODE_STRUCTURED) + if (State.RendererSettings.JointsBufferMode == USD_Renderer::JOINTS_BUFFER_MODE_UNIFORM && + Joints.BufferOffset != CurrJointsBufferOffset) { - // RenderPBR.vsh - // - // StructuredBuffer g_JointTransforms; - // - // Joints data range is the size of the actual data. - JointsDataRange = JointsDataSize; - } - else - { - UNEXPECTED("Unexpected joints buffer mode"); + // Start a new multi-draw batch if the joints buffer offset changes + MultiDrawCount = 0; + CurrJointsBufferOffset = Joints.BufferOffset; } - if (TotalJointsDataSize + JointsDataRange > JointsBuffDesc.Size) + if (Joints.BatchIdx != CurrJointDataBatch) { - // There is not enough space for the new joint transforms. - // Flush pending draws to start filling the joints buffer from the beginning. - AttribsBufferOffset = AttribsBuffDesc.Size; + VERIFY(CurrJointDataBatch == ~0u || Joints.BatchIdx > CurrJointDataBatch, "Joint data batch indices must be increasing"); + if (CurrJointDataBatch != ~0u) + { + // Joints buffer needs to be updated - flush pending draws + MultiDrawCount = 0; + AttribsBufferOffset = AttribsBuffDesc.Size; + } + else + { + // Joints buffer needs to be updated, but previous draw items do not use it. + } } } @@ -623,91 +658,41 @@ HnRenderPass::EXECUTE_RESULT HnRenderPass::Execute(HnRenderPassState& RPState, c } } - auto GetBufferDataPtr = [pCtx = State.pCtx](IBuffer* pBuffer, - const BufferDesc& BuffDesc, - void*& pMappedData, - Uint32 Offset, - std::vector& StagingData, - Uint32 DataRange) -> void* { - if (BuffDesc.Usage == USAGE_DYNAMIC) - { - if (pMappedData == nullptr) - { - pCtx->MapBuffer(pBuffer, MAP_WRITE, MAP_FLAG_DISCARD, pMappedData); - if (pMappedData == nullptr) - { - LOG_DVP_ERROR_MESSAGE("Failed to map buffer '", BuffDesc.Name, "'."); - return nullptr; - } - } - return reinterpret_cast(pMappedData) + Offset; - } - else - { - VERIFY_EXPR(Offset + DataRange <= StagingData.size()); - return &StagingData[Offset]; - } - }; + if (Joints && Joints.BatchIdx != CurrJointDataBatch) + { + // Write next joints data batch after flushing pending draws + WriteJointsDataBatch(State, Joints.BatchIdx, PSOFlags); + VERIFY(CurrJointDataBatch == ~0u || Joints.BatchIdx > CurrJointDataBatch, "Joint data batch indices must be increasing"); + CurrJointDataBatch = Joints.BatchIdx; + } - if (pSkinningData) + void* pCurrPrimitive = nullptr; + if (AttribsBuffDesc.Usage == USAGE_DYNAMIC) { - if (pSkinningData->XformsHash != XformsHash) + if (pMappedPrimitiveData == nullptr) { - VERIFY(TotalJointsDataSize + JointsDataRange <= JointsBuffDesc.Size, - "There must be enough space for the new joint transforms as we flush the pending draw if there is not enough space."); - - JointsBufferOffset = TotalJointsDataSize; - - void* pJointsData = GetBufferDataPtr(pJointsCB, JointsBuffDesc, pMappedJointsData, JointsBufferOffset, m_JointsData, JointsDataRange); - if (pJointsData == nullptr) + State.pCtx->MapBuffer(pPrimitiveAttribsCB, MAP_WRITE, MAP_FLAG_DISCARD, pMappedPrimitiveData); + if (pMappedPrimitiveData == nullptr) + { + LOG_ERROR_MESSAGE("Failed to map primitive attribs buffer '", AttribsBuffDesc.Name, "'."); break; - - // Write new joint transforms - const pxr::VtMatrix4fArray* PrevXforms = ListItem.PrevXforms != nullptr ? ListItem.PrevXforms : pSkinningData->Xforms; - USD_Renderer::WriteSkinningDataAttribs WriteSkinningAttribs{PSOFlags, JointCount}; - WriteSkinningAttribs.JointMatrices = reinterpret_cast(pSkinningData->Xforms->data()); - WriteSkinningAttribs.PrevJointMatrices = reinterpret_cast(PrevXforms->data()); - - void* pDataEnd = State.USDRenderer.WriteSkinningData(pJointsData, WriteSkinningAttribs); - VERIFY_EXPR(JointsDataSize == static_cast(reinterpret_cast(pDataEnd) - reinterpret_cast(pJointsData))); - (void)pDataEnd; - TotalJointsDataSize = AlignUp(JointsBufferOffset + JointsDataSize, JointsBufferOffsetAlignment); - - XformsHash = pSkinningData->XformsHash; - - VERIFY(MultiDrawCount == 0, "The batch must be reset when the joint transforms change."); - } - -#ifdef DILIGENT_DEBUG - if (MultiDrawCount > 0) - { - auto& FirstMultiDrawItem = m_PendingDrawItems[m_PendingDrawItems.size() - MultiDrawCount]; - VERIFY(FirstMultiDrawItem.JointsBufferOffset == JointsBufferOffset, - "All items in the batch must have the same joints buffer offset since we reset the batch when the joint transforms change."); + } } -#endif - - ListItem.PrevXforms = pSkinningData->Xforms; + pCurrPrimitive = reinterpret_cast(pMappedPrimitiveData) + AttribsBufferOffset; + } + else + { + VERIFY_EXPR(AttribsBufferOffset + ListItem.ShaderAttribsDataSize <= m_PrimitiveAttribsData.size()); + pCurrPrimitive = &m_PrimitiveAttribsData[AttribsBufferOffset]; } - - void* pCurrPrimitive = GetBufferDataPtr(pPrimitiveAttribsCB, AttribsBuffDesc, pMappedPrimitiveData, AttribsBufferOffset, m_PrimitiveAttribsData, ListItem.ShaderAttribsDataSize); - if (pCurrPrimitive == nullptr) - break; // Write current primitive attributes - - // In structured buffer mode, we use the first joint index. - // In uniform buffer mode, we use the joint buffer offset. - const Uint32 FirstJoint = (State.RendererSettings.JointsBufferMode == USD_Renderer::JOINTS_BUFFER_MODE_STRUCTURED) ? - JointsBufferOffset / sizeof(float4x4) : - 0; - GLTF_PBR_Renderer::PBRPrimitiveShaderAttribsData AttribsData{ PSOFlags, &Transform.Matrix, &ListItem.PrevTransform, - JointCount, - FirstJoint, + Joints.JointCount, + Joints.FirstJoint, &Transform.PosScale, &Transform.PosBias, pSkinningData ? reinterpret_cast(pSkinningData->GeomBindXform.Data()) : nullptr, @@ -725,7 +710,7 @@ HnRenderPass::EXECUTE_RESULT HnRenderPass::Execute(HnRenderPassState& RPState, c m_PendingDrawItems.push_back(PendingDrawItem{ ListItem, AttribsBufferOffset, - pSkinningData != nullptr ? JointsBufferOffset : ~0u, + Joints.BufferOffset, }); AttribsBufferOffset += ListItem.ShaderAttribsDataSize; @@ -857,6 +842,134 @@ void HnRenderPass::UpdateDrawList(const pxr::TfTokenVector& RenderTags) m_GlobalAttribVersions.GeomSubsetDrawItems = GeomSubsetDrawItemsVersion; } +void HnRenderPass::UpdateDrawListJoints(HnRenderDelegate& RenderDelegate) +{ + // Each skinned draw item references joints data. + // Joints data is organized in batches that fit into the joints buffer. + // + // | Batch 0 | | Batch 1 | + // | | | | + // Draw Items [ 0 ][ 0 ][ -1 ][ 1 ][ 1 ] [ 0 ][ 0 ][ -1 ][ 1 ] + // | | | | | | | + // |.----' .-----------'------' | | | + // | | .--------------------'------' | + // | | | .-----------------------------------' + // V V V V + // Joints Data [ ][ ][ ][ ] + // | upload 0 || upload 1 | + + m_DrawItemJoints.clear(); + + const USD_Renderer& USDRenderer = *RenderDelegate.GetUSDRenderer(); + const PBR_Renderer::CreateInfo& RendererSettings = USDRenderer.GetSettings(); + + if (RendererSettings.MaxJointCount == 0) + return; + + IBuffer* pJointsCB = USDRenderer.GetJointsBuffer(); + if (pJointsCB == nullptr) + { + UNEXPECTED("Joints buffer must not be null"); + return; + } + const BufferDesc& JointsBuffDesc = pJointsCB->GetDesc(); + + const Uint32 JointsBufferOffsetAlignment = (RendererSettings.JointsBufferMode == USD_Renderer::JOINTS_BUFFER_MODE_UNIFORM) ? + RenderDelegate.GetDevice()->GetAdapterInfo().Buffer.ConstantBufferOffsetAlignment : + sizeof(float4x4); + + auto MeshSkinningView = RenderDelegate.GetEcsRegistry().view(); + + Uint32 CurrBufferOffset = 0; + Uint32 CurrBatchIdx = 0; + std::unordered_map XformsHashToJointDataIdx; + for (DrawListItem& ListItem : m_DrawList) + { + if (!ListItem.DrawItem.IsValid() || !ListItem.DrawItem.GetGeometryData().Joints) + continue; + + const HnMesh::Components::Skinning& Skinning = MeshSkinningView.get(ListItem.MeshEntity); + const HnSkinningComputation* SkinComp = Skinning.Computation; + if (SkinComp == nullptr) + continue; + + size_t XformsHash = SkinComp->GetXformsHash(); + VERIFY_EXPR(XformsHash != 0); + + // Note that we rely on the XformsHash computed at the time when the draw list is updated. + // In theory it is possible that different xforms have the same hash at one time and + // different hashes at another time, but this is highly unlikely. + auto XformsHashIt = XformsHashToJointDataIdx.find(XformsHash); + if (XformsHashIt != XformsHashToJointDataIdx.end()) + { + ListItem.JointsIdx = XformsHashIt->second; + continue; + } + + DrawItemJointsData Joints; + + Joints.JointCount = std::min(static_cast(SkinComp->GetXforms().size()), RendererSettings.MaxJointCount); + // Reserve max space that may be needed for the joints data. + Joints.DataSize = USDRenderer.GetJointsDataSize(Joints.JointCount, PBR_Renderer::PSO_FLAG_ALL); + + Uint32 JointsDataRange = 0; + if (RendererSettings.JointsBufferMode == USD_Renderer::JOINTS_BUFFER_MODE_UNIFORM) + { + // RenderPBR.vsh + // + // struct SkinnigData + // { + // # if COMPUTE_MOTION_VECTORS + // float4x4 Joints[MAX_JOINT_COUNT * 2]; + // # else + // float4x4 Joints[MAX_JOINT_COUNT]; + // # endif + // }; + // + // Joints data range is the size of the entire structure with the maximum number of joints. + JointsDataRange = USDRenderer.GetJointsDataSize(RendererSettings.MaxJointCount, PBR_Renderer::PSO_FLAG_ALL); + } + else if (RendererSettings.JointsBufferMode == USD_Renderer::JOINTS_BUFFER_MODE_STRUCTURED) + { + // RenderPBR.vsh + // + // StructuredBuffer g_JointTransforms; + // + // Joints data range is the size of the actual data. + JointsDataRange = Joints.DataSize; + } + else + { + UNEXPECTED("Unexpected joints buffer mode"); + } + + if (CurrBufferOffset + JointsDataRange > JointsBuffDesc.Size) + { + // There is not enough space for the new joint transforms - start new batch. + CurrBufferOffset = 0; + ++CurrBatchIdx; + XformsHashToJointDataIdx.clear(); + } + + Joints.BatchIdx = CurrBatchIdx; + Joints.BufferOffset = CurrBufferOffset; + + // In structured buffer mode, we use the first joint index. + // In uniform buffer mode, we use the joint buffer offset. + Joints.FirstJoint = (RendererSettings.JointsBufferMode == USD_Renderer::JOINTS_BUFFER_MODE_STRUCTURED) ? + CurrBufferOffset / sizeof(float4x4) : + 0; + + Joints.SkinComp = SkinComp; + + ListItem.JointsIdx = static_cast(m_DrawItemJoints.size()); + XformsHashToJointDataIdx.emplace(XformsHash, ListItem.JointsIdx); + m_DrawItemJoints.push_back(Joints); + + CurrBufferOffset = AlignUp(CurrBufferOffset + Joints.DataSize, JointsBufferOffsetAlignment); + } +} + PBR_Renderer::PSO_FLAGS HnRenderPass::GetFallbackPSOFlags() const { return (m_RenderMode == HN_RENDER_MODE_SOLID ? @@ -1032,6 +1145,8 @@ void HnRenderPass::UpdateDrawListGPUResources(RenderState& State) } #endif } + + UpdateDrawListJoints(State.RenderDelegate); } m_DrawListItemsDirtyFlags = DRAW_LIST_ITEM_DIRTY_FLAG_NONE; @@ -1189,8 +1304,8 @@ void HnRenderPass::UpdateDrawListItemGPUResources(DrawListItem& ListItem, Render UNEXPECTED("Unexpected render mode"); } - ListItem.ShaderAttribsDataSize = State.USDRenderer.GetPBRPrimitiveAttribsSize(PSOFlags); - ListItem.PrimitiveAttribsBufferRange = pMaterial->GetPBRPrimitiveAttribsBufferRange(); + ListItem.ShaderAttribsDataSize = StaticCast(State.USDRenderer.GetPBRPrimitiveAttribsSize(PSOFlags)); + ListItem.PrimitiveAttribsBufferRange = StaticCast(pMaterial->GetPBRPrimitiveAttribsBufferRange()); VERIFY(ListItem.ShaderAttribsDataSize <= ListItem.PrimitiveAttribsBufferRange, "Attribs data size (", ListItem.ShaderAttribsDataSize, ") computed from the PSO flags exceeds the attribs buffer range (", ListItem.PrimitiveAttribsBufferRange, ") computed from material PSO flags. The latter is used by HnMaterial to set the buffer range.");