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resourceRegistry.cpp
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resourceRegistry.cpp
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//
// Copyright 2016 Pixar
//
// Licensed under the Apache License, Version 2.0 (the "Apache License")
// with the following modification; you may not use this file except in
// compliance with the Apache License and the following modification to it:
// Section 6. Trademarks. is deleted and replaced with:
//
// 6. Trademarks. This License does not grant permission to use the trade
// names, trademarks, service marks, or product names of the Licensor
// and its affiliates, except as required to comply with Section 4(c) of
// the License and to reproduce the content of the NOTICE file.
//
// You may obtain a copy of the Apache License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the Apache License with the above modification is
// distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
// KIND, either express or implied. See the Apache License for the specific
// language governing permissions and limitations under the Apache License.
//
#include "pxr/base/work/loops.h"
#include "pxr/imaging/hd/tokens.h"
#include "pxr/imaging/hdSt/copyComputation.h"
#include "pxr/imaging/hdSt/dispatchBuffer.h"
#include "pxr/imaging/hdSt/glslProgram.h"
#include "pxr/imaging/hdSt/interleavedMemoryManager.h"
#include "pxr/imaging/hdSt/resourceRegistry.h"
#include "pxr/imaging/hdSt/stagingBuffer.h"
#include "pxr/imaging/hdSt/vboMemoryManager.h"
#include "pxr/imaging/hdSt/vboSimpleMemoryManager.h"
#include "pxr/imaging/hdSt/shaderCode.h"
#include "pxr/imaging/hdSt/textureHandleRegistry.h"
#include "pxr/imaging/hdSt/textureObjectRegistry.h"
#include "pxr/imaging/hio/glslfx.h"
#include "pxr/imaging/hgi/hgi.h"
#include "pxr/imaging/hgi/capabilities.h"
#include "pxr/imaging/hgi/computeCmdsDesc.h"
#include "pxr/base/tf/envSetting.h"
#include "pxr/base/tf/hash.h"
#ifdef PXR_MATERIALX_SUPPORT_ENABLED
#include <MaterialXGenShader/Shader.h>
#endif
PXR_NAMESPACE_OPEN_SCOPE
TF_DEFINE_ENV_SETTING(HDST_ENABLE_RESOURCE_INSTANCING, true,
"Enable instance registry deduplication of resource data");
TF_DEFINE_PRIVATE_TOKENS(
_perfTokens,
(numberOfTextureObjects)
(numberOfTextureHandles)
);
static void
_CopyChainedBuffers(HdBufferSourceSharedPtr const& src,
HdBufferArrayRangeSharedPtr const& range)
{
if (src->HasChainedBuffer()) {
HdBufferSourceSharedPtrVector chainedSrcs = src->GetChainedBuffers();
// Traverse the tree in a depth-first fashion.
for(auto& c : chainedSrcs) {
range->CopyData(c);
_CopyChainedBuffers(c, range);
}
}
}
static size_t
_GetChainedStagingSize(HdBufferSourceSharedPtr const& src)
{
size_t size = 0;
if (src->HasChainedBuffer()) {
HdBufferSourceSharedPtrVector chainedSrcs = src->GetChainedBuffers();
// Traverse the tree in a depth-first fashion.
for (auto& c : chainedSrcs) {
const size_t numElements = c->GetNumElements();
if (numElements > 0) {
size += numElements * HdDataSizeOfTupleType(c->GetTupleType());
}
size += _GetChainedStagingSize(c);
}
}
return size;
}
static bool
_IsEnabledResourceInstancing()
{
static bool isResourceInstancingEnabled =
TfGetEnvSetting(HDST_ENABLE_RESOURCE_INSTANCING);
return isResourceInstancingEnabled;
}
template <typename ID, typename T>
HdInstance<T>
_Register(ID id, HdInstanceRegistry<T> ®istry, TfToken const &perfToken)
{
if (_IsEnabledResourceInstancing()) {
HdInstance<T> instance = registry.GetInstance(id);
if (instance.IsFirstInstance()) {
HD_PERF_COUNTER_INCR(perfToken);
}
return instance;
} else {
// Return an instance that is not managed by the registry when
// topology instancing is disabled.
return HdInstance<T>(id);
}
}
HdStResourceRegistry::HdStResourceRegistry(Hgi * const hgi)
: _hgi(hgi)
, _numBufferSourcesToResolve(0)
// default aggregation strategies for varying (vertex, varying) primvars
, _nonUniformAggregationStrategy(
std::make_unique<HdStVBOMemoryManager>(this))
, _nonUniformImmutableAggregationStrategy(
std::make_unique<HdStVBOMemoryManager>(this))
// default aggregation strategy for uniform on UBO (for globals)
, _uniformUboAggregationStrategy(
std::make_unique<HdStInterleavedUBOMemoryManager>(this))
// default aggregation strategy for uniform on SSBO (for primvars)
, _uniformSsboAggregationStrategy(
std::make_unique<HdStInterleavedSSBOMemoryManager>(this))
// default aggregation strategy for single buffers (for nested instancer)
, _singleAggregationStrategy(
std::make_unique<HdStVBOSimpleMemoryManager>(this))
, _textureHandleRegistry(std::make_unique<HdSt_TextureHandleRegistry>(this))
, _stagingBuffer(std::make_unique<HdStStagingBuffer>(this))
{
}
HdStResourceRegistry::~HdStResourceRegistry()
{
// XXX Ideally all the HdInstanceRegistry would get destroy here and
// they cleanup all GPU resources. Since that mechanism isn't in place
// yet, we call GarbageCollect to emulate this behavior.
GarbageCollect();
}
void HdStResourceRegistry::InvalidateShaderRegistry()
{
_geometricShaderRegistry.Invalidate();
_glslfxFileRegistry.Invalidate();
#ifdef PXR_MATERIALX_SUPPORT_ENABLED
_materialXShaderRegistry.Invalidate();
#endif
}
void HdStResourceRegistry::ReloadResource(TfToken const& resourceType,
std::string const& path)
{
// find the file and invalidate it
if (resourceType == HdResourceTypeTokens->shaderFile) {
size_t pathHash = TfHash()(path);
HdInstance<HioGlslfxSharedPtr> glslfxInstance =
RegisterGLSLFXFile(pathHash);
// Reload the glslfx file.
HioGlslfxSharedPtr glslfxSharedPtr = glslfxInstance.GetValue();
glslfxSharedPtr.reset(new HioGlslfx(path));
glslfxInstance.SetValue(glslfxSharedPtr);
} else if (resourceType == HdResourceTypeTokens->texture) {
HdSt_TextureObjectRegistry *const reg =
_textureHandleRegistry->GetTextureObjectRegistry();
reg->MarkTextureFilePathDirty(TfToken(path));
}
}
VtDictionary
HdStResourceRegistry::GetResourceAllocation() const
{
VtDictionary result;
size_t gpuMemoryUsed = 0;
// buffer array allocation
const size_t nonUniformSize =
_nonUniformBufferArrayRegistry.GetResourceAllocation(
_nonUniformAggregationStrategy.get(), result) +
_nonUniformImmutableBufferArrayRegistry.GetResourceAllocation(
_nonUniformImmutableAggregationStrategy.get(), result);
const size_t uboSize =
_uniformUboBufferArrayRegistry.GetResourceAllocation(
_uniformUboAggregationStrategy.get(), result);
const size_t ssboSize =
_uniformSsboBufferArrayRegistry.GetResourceAllocation(
_uniformSsboAggregationStrategy.get(), result);
const size_t singleBufferSize =
_singleBufferArrayRegistry.GetResourceAllocation(
_singleAggregationStrategy.get(), result);
result[HdPerfTokens->nonUniformSize] = VtValue(nonUniformSize);
result[HdPerfTokens->uboSize] = VtValue(uboSize);
result[HdPerfTokens->ssboSize] = VtValue(ssboSize);
result[HdPerfTokens->singleBufferSize] = VtValue(singleBufferSize);
gpuMemoryUsed += nonUniformSize +
uboSize +
ssboSize +
singleBufferSize;
result[HdPerfTokens->gpuMemoryUsed.GetString()] = gpuMemoryUsed;
// Prompt derived registries to tally their resources.
_TallyResourceAllocation(&result);
gpuMemoryUsed =
VtDictionaryGet<size_t>(result, HdPerfTokens->gpuMemoryUsed.GetString(),
VtDefault = 0);
HD_PERF_COUNTER_SET(HdPerfTokens->gpuMemoryUsed, gpuMemoryUsed);
return result;
}
Hgi*
HdStResourceRegistry::GetHgi()
{
return _hgi;
}
/// ------------------------------------------------------------------------
/// BAR allocation API
/// ------------------------------------------------------------------------
HdBufferArrayRangeSharedPtr
HdStResourceRegistry::AllocateNonUniformBufferArrayRange(
TfToken const &role,
HdBufferSpecVector const &bufferSpecs,
HdBufferArrayUsageHint usageHint)
{
return _AllocateBufferArrayRange(
_nonUniformAggregationStrategy.get(),
_nonUniformBufferArrayRegistry,
role,
bufferSpecs,
usageHint);
}
HdBufferArrayRangeSharedPtr
HdStResourceRegistry::AllocateNonUniformImmutableBufferArrayRange(
TfToken const &role,
HdBufferSpecVector const &bufferSpecs,
HdBufferArrayUsageHint usageHint)
{
usageHint |= HdBufferArrayUsageHintBitsImmutable;
return _AllocateBufferArrayRange(
_nonUniformImmutableAggregationStrategy.get(),
_nonUniformImmutableBufferArrayRegistry,
role,
bufferSpecs,
usageHint);
}
HdBufferArrayRangeSharedPtr
HdStResourceRegistry::AllocateUniformBufferArrayRange(
TfToken const &role,
HdBufferSpecVector const &bufferSpecs,
HdBufferArrayUsageHint usageHint)
{
return _AllocateBufferArrayRange(
_uniformUboAggregationStrategy.get(),
_uniformUboBufferArrayRegistry,
role,
bufferSpecs,
usageHint);
}
HdBufferArrayRangeSharedPtr
HdStResourceRegistry::AllocateShaderStorageBufferArrayRange(
TfToken const &role,
HdBufferSpecVector const &bufferSpecs,
HdBufferArrayUsageHint usageHint)
{
return _AllocateBufferArrayRange(
_uniformSsboAggregationStrategy.get(),
_uniformSsboBufferArrayRegistry,
role,
bufferSpecs,
usageHint);
}
HdBufferArrayRangeSharedPtr
HdStResourceRegistry::AllocateSingleBufferArrayRange(
TfToken const &role,
HdBufferSpecVector const &bufferSpecs,
HdBufferArrayUsageHint usageHint)
{
return _AllocateBufferArrayRange(
_singleAggregationStrategy.get(),
_singleBufferArrayRegistry,
role,
bufferSpecs,
usageHint);
}
/// ------------------------------------------------------------------------
/// BAR allocation/migration/update API
/// ------------------------------------------------------------------------
HdBufferArrayRangeSharedPtr
HdStResourceRegistry::UpdateNonUniformBufferArrayRange(
TfToken const &role,
HdBufferArrayRangeSharedPtr const& curRange,
HdBufferSpecVector const &updatedOrAddedSpecs,
HdBufferSpecVector const& removedSpecs,
HdBufferArrayUsageHint usageHint)
{
return _UpdateBufferArrayRange(
_nonUniformAggregationStrategy.get(),
_nonUniformBufferArrayRegistry,
role,
curRange,
updatedOrAddedSpecs, removedSpecs, usageHint);
}
HdBufferArrayRangeSharedPtr
HdStResourceRegistry::UpdateNonUniformImmutableBufferArrayRange(
TfToken const &role,
HdBufferArrayRangeSharedPtr const& curRange,
HdBufferSpecVector const &updatedOrAddedSpecs,
HdBufferSpecVector const& removedSpecs,
HdBufferArrayUsageHint usageHint)
{
usageHint |= HdBufferArrayUsageHintBitsImmutable;
return _UpdateBufferArrayRange(
_nonUniformImmutableAggregationStrategy.get(),
_nonUniformImmutableBufferArrayRegistry,
role,
curRange,
updatedOrAddedSpecs, removedSpecs, usageHint);
}
HdBufferArrayRangeSharedPtr
HdStResourceRegistry::UpdateUniformBufferArrayRange(
TfToken const &role,
HdBufferArrayRangeSharedPtr const& curRange,
HdBufferSpecVector const &updatedOrAddedSpecs,
HdBufferSpecVector const& removedSpecs,
HdBufferArrayUsageHint usageHint)
{
return _UpdateBufferArrayRange(
_uniformUboAggregationStrategy.get(),
_uniformUboBufferArrayRegistry,
role,
curRange,
updatedOrAddedSpecs, removedSpecs, usageHint);
}
HdBufferArrayRangeSharedPtr
HdStResourceRegistry::UpdateShaderStorageBufferArrayRange(
TfToken const &role,
HdBufferArrayRangeSharedPtr const& curRange,
HdBufferSpecVector const &updatedOrAddedSpecs,
HdBufferSpecVector const& removedSpecs,
HdBufferArrayUsageHint usageHint)
{
return _UpdateBufferArrayRange(
_uniformSsboAggregationStrategy.get(),
_uniformSsboBufferArrayRegistry,
role,
curRange,
updatedOrAddedSpecs, removedSpecs, usageHint);
}
/// ------------------------------------------------------------------------
/// Resource update & computation queuing API
/// ------------------------------------------------------------------------
void
HdStResourceRegistry::AddSources(HdBufferArrayRangeSharedPtr const &range,
HdBufferSourceSharedPtrVector &&sources)
{
HD_TRACE_FUNCTION();
HF_MALLOC_TAG_FUNCTION();
if (ARCH_UNLIKELY(sources.empty()))
{
TF_RUNTIME_ERROR("sources list is empty");
return;
}
// range has to be valid
if (ARCH_UNLIKELY(!(range && range->IsValid())))
{
TF_RUNTIME_ERROR("range is null or invalid");
return;
}
// Check that each buffer is valid and if not erase it from the list
// Can not use standard iterators here as erasing invalidates them
// also the vector is unordered, so we can do a quick erase
// by moving the item off the end of the vector.
size_t srcNum = 0;
while (srcNum < sources.size()) {
if (ARCH_LIKELY(sources[srcNum]->IsValid())) {
if (ARCH_UNLIKELY(sources[srcNum]->HasPreChainedBuffer())) {
AddSource(sources[srcNum]->GetPreChainedBuffer());
}
++srcNum;
} else {
TF_RUNTIME_ERROR("Source Buffer for %s is invalid",
sources[srcNum]->GetName().GetText());
// Move the last item in the vector over
// this one. If it is the last item
// it will copy over itself and the pop
// will remove it anyway.
sources[srcNum] = sources.back();
sources.pop_back();
// Don't increment srcNum as it now points
// to the new item or is off the end of the vector
}
}
// Check for no-valid buffer case
if (!sources.empty()) {
_numBufferSourcesToResolve += sources.size();
_pendingSources.emplace_back(
range, std::move(sources));
TF_VERIFY(range.use_count() >=2);
}
}
void
HdStResourceRegistry::AddSource(HdBufferArrayRangeSharedPtr const &range,
HdBufferSourceSharedPtr const &source)
{
HD_TRACE_FUNCTION();
HF_MALLOC_TAG_FUNCTION();
if (ARCH_UNLIKELY((!source) || (!range)))
{
TF_RUNTIME_ERROR("An input pointer is null");
return;
}
// range has to be valid
if (ARCH_UNLIKELY(!range->IsValid()))
{
TF_RUNTIME_ERROR("range is invalid");
return;
}
// Buffer has to be valid
if (ARCH_UNLIKELY(!source->IsValid()))
{
TF_RUNTIME_ERROR("source buffer for %s is invalid",
source->GetName().GetText());
return;
}
if (ARCH_UNLIKELY(source->HasPreChainedBuffer())) {
AddSource(source->GetPreChainedBuffer());
}
_pendingSources.emplace_back(range, source);
++_numBufferSourcesToResolve; // Atomic
}
void
HdStResourceRegistry::AddSource(HdBufferSourceSharedPtr const &source)
{
HD_TRACE_FUNCTION();
HF_MALLOC_TAG_FUNCTION();
if (ARCH_UNLIKELY(!source))
{
TF_RUNTIME_ERROR("source pointer is null");
return;
}
// Buffer has to be valid
if (ARCH_UNLIKELY(!source->IsValid()))
{
TF_RUNTIME_ERROR("source buffer for %s is invalid",
source->GetName().GetText());
return;
}
if (ARCH_UNLIKELY(source->HasPreChainedBuffer())) {
AddSource(source->GetPreChainedBuffer());
}
_pendingSources.emplace_back(HdBufferArrayRangeSharedPtr(), source);
++_numBufferSourcesToResolve; // Atomic
}
void
HdStResourceRegistry::AddComputation(HdBufferArrayRangeSharedPtr const &range,
HdStComputationSharedPtr const &computation,
HdStComputeQueue const queue)
{
HD_TRACE_FUNCTION();
HF_MALLOC_TAG_FUNCTION();
if (TF_VERIFY(queue < HdStComputeQueueCount)) {
_pendingComputations[queue].emplace_back(range, computation);
}
}
/// ------------------------------------------------------------------------
/// Dispatch & misc buffer API
/// ------------------------------------------------------------------------
HdStDispatchBufferSharedPtr
HdStResourceRegistry::RegisterDispatchBuffer(
TfToken const &role, int count, int commandNumUints)
{
HdStDispatchBufferSharedPtr const result =
std::make_shared<HdStDispatchBuffer>(
this, role, count, commandNumUints);
_dispatchBufferRegistry.push_back(result);
return result;
}
HdStBufferResourceSharedPtr
HdStResourceRegistry::RegisterBufferResource(
TfToken const &role,
HdTupleType tupleType,
HgiBufferUsage bufferUsage)
{
HdStBufferResourceSharedPtr const result =
std::make_shared<HdStBufferResource>(
role, tupleType, /*offset*/ 0, /*stride*/ 0);
size_t byteSize = HdDataSizeOfTupleType(tupleType);
HgiBufferDesc bufDesc;
bufDesc.usage = bufferUsage;
bufDesc.byteSize = byteSize;
HgiBufferHandle buffer = _hgi->CreateBuffer(bufDesc);
result->SetAllocation(buffer, byteSize);
_bufferResourceRegistry.push_back(result);
return result;
}
void
HdStResourceRegistry::GarbageCollectDispatchBuffers()
{
HD_TRACE_FUNCTION();
_dispatchBufferRegistry.erase(
std::remove_if(
_dispatchBufferRegistry.begin(), _dispatchBufferRegistry.end(),
std::bind(&HdStDispatchBufferSharedPtr::unique,
std::placeholders::_1)),
_dispatchBufferRegistry.end());
}
void
HdStResourceRegistry::GarbageCollectBufferResources()
{
HD_TRACE_FUNCTION();
_bufferResourceRegistry.erase(
std::remove_if(
_bufferResourceRegistry.begin(), _bufferResourceRegistry.end(),
std::bind(&HdStBufferResourceSharedPtr::unique,
std::placeholders::_1)),
_bufferResourceRegistry.end());
}
/// ------------------------------------------------------------------------
/// Instance Registries
/// ------------------------------------------------------------------------
HdInstance<HdSt_MeshTopologySharedPtr>
HdStResourceRegistry::RegisterMeshTopology(
HdInstance<HdSt_MeshTopologySharedPtr>::ID id)
{
return _Register(id, _meshTopologyRegistry,
HdPerfTokens->instMeshTopology);
}
HdInstance<HdSt_BasisCurvesTopologySharedPtr>
HdStResourceRegistry::RegisterBasisCurvesTopology(
HdInstance<HdSt_BasisCurvesTopologySharedPtr>::ID id)
{
return _Register(id, _basisCurvesTopologyRegistry,
HdPerfTokens->instBasisCurvesTopology);
}
HdInstance<HdSt_VertexAdjacencyBuilderSharedPtr>
HdStResourceRegistry::RegisterVertexAdjacencyBuilder(
HdInstance<HdSt_VertexAdjacencyBuilderSharedPtr>::ID id)
{
return _Register(id, _vertexAdjacencyBuilderRegistry,
HdPerfTokens->instVertexAdjacency);
}
HdInstance<HdBufferArrayRangeSharedPtr>
HdStResourceRegistry::RegisterMeshIndexRange(
HdInstance<HdBufferArrayRangeSharedPtr>::ID id, TfToken const &name)
{
return _Register(id, _meshTopologyIndexRangeRegistry[name],
HdPerfTokens->instMeshTopologyRange);
}
HdInstance<HdBufferArrayRangeSharedPtr>
HdStResourceRegistry::RegisterBasisCurvesIndexRange(
HdInstance<HdBufferArrayRangeSharedPtr>::ID id, TfToken const &name)
{
return _Register(id, _basisCurvesTopologyIndexRangeRegistry[name],
HdPerfTokens->instBasisCurvesTopologyRange);
}
HdInstance<HdBufferArrayRangeSharedPtr>
HdStResourceRegistry::RegisterPrimvarRange(
HdInstance<HdBufferArrayRangeSharedPtr>::ID id)
{
return _Register(id, _primvarRangeRegistry,
HdPerfTokens->instPrimvarRange);
}
HdInstance<HdBufferArrayRangeSharedPtr>
HdStResourceRegistry::RegisterExtComputationDataRange(
HdInstance<HdBufferArrayRangeSharedPtr>::ID id)
{
return _Register(id, _extComputationDataRangeRegistry,
HdPerfTokens->instExtComputationDataRange);
}
HdInstance<HdSt_GeometricShaderSharedPtr>
HdStResourceRegistry::RegisterGeometricShader(
HdInstance<HdSt_GeometricShaderSharedPtr>::ID id)
{
return _geometricShaderRegistry.GetInstance(id);
}
HdInstance<HdStGLSLProgramSharedPtr>
HdStResourceRegistry::RegisterGLSLProgram(
HdInstance<HdStGLSLProgramSharedPtr>::ID id)
{
return _glslProgramRegistry.GetInstance(id);
}
HdInstance<HioGlslfxSharedPtr>
HdStResourceRegistry::RegisterGLSLFXFile(
HdInstance<HioGlslfxSharedPtr>::ID id)
{
return _glslfxFileRegistry.GetInstance(id);
}
#ifdef PXR_MATERIALX_SUPPORT_ENABLED
HdInstance<MaterialX::ShaderPtr>
HdStResourceRegistry::RegisterMaterialXShader(
HdInstance<MaterialX::ShaderPtr>::ID id)
{
return _materialXShaderRegistry.GetInstance(id);
}
#endif
HdInstance<HgiResourceBindingsSharedPtr>
HdStResourceRegistry::RegisterResourceBindings(
HdInstance<HgiResourceBindingsSharedPtr>::ID id)
{
return _resourceBindingsRegistry.GetInstance(id);
}
HdInstance<HgiGraphicsPipelineSharedPtr>
HdStResourceRegistry::RegisterGraphicsPipeline(
HdInstance<HgiGraphicsPipelineSharedPtr>::ID id)
{
return _graphicsPipelineRegistry.GetInstance(id);
}
HdInstance<HgiComputePipelineSharedPtr>
HdStResourceRegistry::RegisterComputePipeline(
HdInstance<HgiComputePipelineSharedPtr>::ID id)
{
return _computePipelineRegistry.GetInstance(id);
}
HdResourceRegistry*
HdStResourceRegistry::FindOrCreateSubResourceRegistry(
const std::string& identifier,
const std::function<std::unique_ptr<HdResourceRegistry>()>& factory)
{
auto it = _subResourceRegistries.find(identifier);
if (it == _subResourceRegistries.end()) {
it = _subResourceRegistries.insert({ identifier, factory() }).first;
}
return it->second.get();
}
std::ostream &operator <<(
std::ostream &out,
const HdStResourceRegistry& self)
{
out << "HdStResourceRegistry " << &self << " :\n";
out << self._nonUniformBufferArrayRegistry;
out << self._nonUniformImmutableBufferArrayRegistry;
out << self._uniformUboBufferArrayRegistry;
out << self._uniformSsboBufferArrayRegistry;
out << self._singleBufferArrayRegistry;
return out;
}
HgiBlitCmds*
HdStResourceRegistry::GetGlobalBlitCmds()
{
if (!_blitCmds) {
_blitCmds = _hgi->CreateBlitCmds();
}
return _blitCmds.get();
}
HgiComputeCmds*
HdStResourceRegistry::GetGlobalComputeCmds(HgiComputeDispatch dispatchMethod)
{
// If the HGI device isn't capable of concurrent dispatch then
// only specify serial.
bool const concurrentDispatchSupported =
_hgi->GetCapabilities()->
IsSet(HgiDeviceCapabilitiesBitsConcurrentDispatch);
if (!concurrentDispatchSupported) {
dispatchMethod = HgiComputeDispatchSerial;
}
if (_computeCmds && _computeCmds->GetDispatchMethod() != dispatchMethod) {
SubmitComputeWork();
_computeCmds.reset();
}
if (!_computeCmds) {
HgiComputeCmdsDesc desc;
desc.dispatchMethod = dispatchMethod;
_computeCmds = _hgi->CreateComputeCmds(desc);
}
return _computeCmds.get();
}
HdStStagingBuffer*
HdStResourceRegistry::GetStagingBuffer()
{
return _stagingBuffer.get();
}
void
HdStResourceRegistry::SubmitBlitWork(HgiSubmitWaitType wait)
{
if (_blitCmds) {
_hgi->SubmitCmds(_blitCmds.get(), wait);
_blitCmds.reset();
}
}
void
HdStResourceRegistry::SubmitComputeWork(HgiSubmitWaitType wait)
{
if (_computeCmds) {
_hgi->SubmitCmds(_computeCmds.get(), wait);
_computeCmds.reset();
}
}
void
HdStResourceRegistry::_CommitTextures()
{
HdStShaderCode::ResourceContext ctx(this);
const std::set<HdStShaderCodeSharedPtr> shaderCodes =
_textureHandleRegistry->Commit();
// Give assoicated HdStShaderCode objects a chance to add buffer
// sources that rely on texture sampler handles (bindless) or
// texture metadata (e.g., sampling transform for volume fields).
for (HdStShaderCodeSharedPtr const & shaderCode : shaderCodes) {
shaderCode->AddResourcesFromTextures(ctx);
}
}
void
HdStResourceRegistry::_Commit()
{
// Process sub resource registries before other resources in
// case they depend on any resources in this resource registry
// being committed.
for (auto& subResourceRegistry : _subResourceRegistries) {
subResourceRegistry.second->Commit();
}
// Process textures before resolving buffer sources since
// some computation buffer sources need meta-data from textures
// (such as the grid transform for an OpenVDB file) or texture
// handles (for bindless textures).
_CommitTextures();
// Staging buffer size uses an atomic in anticipation of the
// Resolve loop being multithreaded.
std::atomic_size_t stagingBufferSize { 0 };
// TODO: requests should be sorted by resource, and range.
{
HD_TRACE_SCOPE("Resolve");
// 1. resolve & resize phase:
// for each pending source, resolve and check if it needs buffer
// reallocation or not.
std::atomic_size_t numBufferSourcesResolved { 0 };
int numIterations = 0;
// iterate until all buffer sources have been resolved.
while (numBufferSourcesResolved < _numBufferSourcesToResolve) {
// iterate over all pending sources
WorkParallelForEach(_pendingSources.begin(), _pendingSources.end(),
[&numBufferSourcesResolved, &stagingBufferSize](
_PendingSource &req) {
for (HdBufferSourceSharedPtr const& source: req.sources) {
// execute computation.
// call IsResolved first since Resolve is virtual and
// could be costly.
if (!source->IsResolved()) {
if (source->Resolve()) {
TF_VERIFY(source->IsResolved(),
"Name = %s", source->GetName().GetText());
++numBufferSourcesResolved;
// Calculate the size of the staging buffer.
if (req.range && req.range->RequiresStaging()) {
const size_t numElements =
source->GetNumElements();
// Avoid calling functions on
// HdNullBufferSources
if (numElements > 0) {
stagingBufferSize += numElements *
HdDataSizeOfTupleType(
source->GetTupleType());
}
stagingBufferSize +=
_GetChainedStagingSize(source);
}
}
}
}
});
if (++numIterations > 100) {
TF_WARN("Too many iterations in resolving buffer source. "
"It's likely due to inconsistent dependency.");
break;
}
}
for (_PendingSource &req: _pendingSources) {
// We resize using the size of the first source in the request
// since all sources for the request will have the same size.
if (req.range && TF_VERIFY(!req.sources.empty())) {
req.range->Resize(req.sources[0]->GetNumElements());
}
}
TF_VERIFY(numBufferSourcesResolved == _numBufferSourcesToResolve);
HD_PERF_COUNTER_ADD(HdPerfTokens->bufferSourcesResolved,
numBufferSourcesResolved);
}
{
HD_TRACE_SCOPE("GPU computation prep");
// 2. GPU computation prep phase:
// for each gpu computation, make sure its destination buffer to be
// allocated.
//
for (_PendingComputationList& compVec : _pendingComputations) {
for (_PendingComputation &pendingComp : compVec) {
HdStComputationSharedPtr const &comp = pendingComp.computation;
HdBufferArrayRangeSharedPtr &dstRange = pendingComp.range;
if (dstRange) {
// ask the size of destination buffer of the gpu computation
int numElements = comp->GetNumOutputElements();
if (numElements > 0) {
// We call BufferArray->Reallocate() later so that
// the reallocation happens only once per BufferArray.
//
// if the range is already larger than the current one,
// leave it as it is (there is a possibility that GPU
// computation generates less data than it was).
int currentNumElements = dstRange->GetNumElements();
if (currentNumElements < numElements) {
dstRange->Resize(numElements);
}
}
}
}
}
}
{
HD_TRACE_SCOPE("Reallocate buffer arrays");
// 3. reallocation phase:
//
_nonUniformBufferArrayRegistry.ReallocateAll(
_nonUniformAggregationStrategy.get());
_nonUniformImmutableBufferArrayRegistry.ReallocateAll(
_nonUniformImmutableAggregationStrategy.get());
_uniformUboBufferArrayRegistry.ReallocateAll(
_uniformUboAggregationStrategy.get());
_uniformSsboBufferArrayRegistry.ReallocateAll(
_uniformSsboAggregationStrategy.get());
_singleBufferArrayRegistry.ReallocateAll(
_singleAggregationStrategy.get());
// APPLE METAL: The above creates a set of GPU to GPU copies. However
// the next phase may create some CPU to GPU copies to the same memory.
// Ideally we wouldn't have requested the GPU copy at all (as it's
// redundant) but we did, so we need to ensure these operations are
// completed before we issue the CPU to GPU updates.
SubmitBlitWork(HgiSubmitWaitTypeWaitUntilCompleted);
}
{
HD_TRACE_SCOPE("Copy");
// 4. copy phase:
//
_stagingBuffer->Resize(stagingBufferSize);
for (_PendingSource &pendingSource : _pendingSources) {
HdBufferArrayRangeSharedPtr &dstRange = pendingSource.range;
// CPU computation may not have a range. (e.g. adjacency)
if (!dstRange) continue;
// CPU computation may result in an empty buffer source
// (e.g. GPU quadrangulation table could be empty for quad only
// mesh)
if (dstRange->GetNumElements() == 0) continue;
for (auto const& src : pendingSource.sources) {// execute copy
dstRange->CopyData(src);
// also copy any chained buffers
_CopyChainedBuffers(src, dstRange);
}
if (TfDebug::IsEnabled(HD_BUFFER_ARRAY_RANGE_CLEANED)) {
std::stringstream ss;
ss << *dstRange;
TF_DEBUG(HD_BUFFER_ARRAY_RANGE_CLEANED).Msg("CLEAN: %s\n",
ss.str().c_str());
}
}
}
{
HD_TRACE_SCOPE("Flush");
// 5. flush phase:
//
// flush consolidated / staging buffer updates
_nonUniformAggregationStrategy->Flush();
_nonUniformImmutableAggregationStrategy->Flush();
_uniformUboAggregationStrategy->Flush();
_uniformSsboAggregationStrategy->Flush();
_singleAggregationStrategy->Flush();
_stagingBuffer->Flush();
// Make sure the writes are visible to computations that follow
if (_blitCmds) {
_blitCmds->InsertMemoryBarrier(HgiMemoryBarrierAll);
}
SubmitBlitWork();
}
{
HD_TRACE_SCOPE("GpuComputation Execute");
// 6. execute GPU computations
//
// note: GPU computations have to be executed in the order that
// they are registered.
// e.g. smooth normals -> quadrangulation.
//
for (_PendingComputationList& compVec : _pendingComputations) {
for (_PendingComputation &pendingComp : compVec) {
HdStComputationSharedPtr const &comp = pendingComp.computation;
HdBufferArrayRangeSharedPtr &dstRange = pendingComp.range;