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Performance pass to Cloth CPU Skinning

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- Added operator+(Matrix3x4), operator*(float), RetrieveScaleSq and GetReciprocalScaled to Matrix3x4. Used by Cloth CPU Linear Skinning. These operation will be performant as they use SIMD.
- Modified so there are no virtual functions calls at vertex level.
- Caching indices to simplify the loop when applying skinning.
- Caching static variables Matrix3x4 zero and DualQuaternion zero to avoid creating it for every vertex.
- Removing branching to skip joints when the weight is zero, these cases are rarely and this improves performance by removing branching from loops at vertex level.
- Changing skinning influences so it's a continuous block of memory.
- Caching the vector size() if a variable instead of directly using it in a for loop.
This commit is contained in:
Aaron Ruiz Mora
2021-05-04 12:09:56 +01:00
committed by GitHub
parent 83545c0243
commit 70bd3ea0ff
7 changed files with 388 additions and 210 deletions
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Gems/NvCloth/Code/Source/Components/ClothComponentMesh/ClothComponentMesh.cpp
+10 -5
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@@ -184,7 +184,12 @@ namespace NvCloth
m_actorClothColliders = ActorClothColliders::Create(m_entityId);
// It will return a valid instance if it's an actor with skinning data.
m_actorClothSkinning = ActorClothSkinning::Create(m_entityId, m_meshNodeInfo, m_meshClothInfo.m_particles.size());
m_actorClothSkinning = ActorClothSkinning::Create(
m_entityId,
m_meshNodeInfo,
m_meshClothInfo.m_particles.size(),
m_cloth->GetParticles().size(),
m_meshRemappedVertices);
m_numberOfClothSkinningUpdates = 0;
m_clothConstraints = ClothConstraints::Create(
@@ -363,7 +368,7 @@ namespace NvCloth
{
// Update skinning for all particles and apply it to cloth
AZStd::vector<SimParticleFormat> particles = m_cloth->GetParticles();
m_actorClothSkinning->ApplySkinning(m_cloth->GetInitialParticles(), particles, m_meshRemappedVertices);
m_actorClothSkinning->ApplySkinning(m_cloth->GetInitialParticles(), particles);
m_cloth->SetParticles(AZStd::move(particles));
m_cloth->DiscardParticleDelta();
}
@@ -379,8 +384,8 @@ namespace NvCloth
if (m_actorClothSkinning)
{
m_actorClothSkinning->ApplySkinning(m_clothConstraints->GetMotionConstraints(), m_motionConstraints, m_meshRemappedVertices);
m_actorClothSkinning->ApplySkinning(m_clothConstraints->GetSeparationConstraints(), m_separationConstraints, m_meshRemappedVertices);
m_actorClothSkinning->ApplySkinning(m_clothConstraints->GetMotionConstraints(), m_motionConstraints);
m_actorClothSkinning->ApplySkinning(m_clothConstraints->GetSeparationConstraints(), m_separationConstraints);
}
m_cloth->GetClothConfigurator()->SetMotionConstraints(m_motionConstraints);
@@ -404,7 +409,7 @@ namespace NvCloth
if (m_config.m_removeStaticTriangles && m_actorClothSkinning)
{
// Apply skinning to the non-simulated part of the mesh.
m_actorClothSkinning->ApplySkinninOnRemovedVertices(m_meshClothInfo, renderData, m_meshRemappedVertices);
m_actorClothSkinning->ApplySkinningOnNonSimulatedVertices(m_meshClothInfo, renderData);
}
// Calculate normals of the cloth particles (simplified mesh).