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// Copyright 2009 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
// ospray
#include "Data.h"
#include "ospray/ospray.h"
#include "rkcommon/utility/getEnvVar.h"
#include "rkcommon/utility/multidim_index_sequence.h"
namespace ospray {
Data::Data(api::ISPCDevice &device,
const void *sharedData,
OSPDataType type,
const vec3ul &numItems,
const vec3l &byteStride,
OSPDeleterCallback freeFunction,
const void *userData)
: ISPCDeviceObject(device),
appSharedPtr((char *)sharedData),
shared(true),
type(type),
numItems(numItems),
byteStride(byteStride),
freeFunction(freeFunction),
userData(userData)
{
if (sharedData == nullptr) {
throw std::runtime_error("OSPData: shared buffer is NULL");
}
addr = appSharedPtr;
init();
if (isObjectType(type)) {
for (auto &&child : as<ManagedObject *, 3>()) {
if (child)
child->refInc();
}
}
}
Data::Data(api::ISPCDevice &device, OSPDataType type, const vec3ul &numItems)
: ISPCDeviceObject(device),
shared(false),
type(type),
numItems(numItems),
byteStride(0)
{
// TODO: is this pad out by 16 still needed?
view = devicert::make_buffer_shared_unique<char>(
device.getDRTDevice(), size() * sizeOf(type) + 16);
addr = view->data();
init();
if (isObjectType(type)) // XXX initialize always? or never?
memset(addr, 0, size() * sizeOf(type));
}
Data::~Data()
{
if (isObjectType(type)) {
for (auto &&child : as<ManagedObject *, 3>()) {
if (child)
child->refDec();
}
}
if (freeFunction) {
freeFunction(userData, appSharedPtr);
}
}
ispc::Data1D Data::emptyData1D;
void Data::init()
{
managedObjectType = OSP_DATA;
if (reduce_min(numItems) == 0)
throw std::out_of_range("OSPData: all numItems must be positive");
dimensions =
std::max(1, (numItems.x > 1) + (numItems.y > 1) + (numItems.z > 1));
// compute strides if requested
if (byteStride.x == 0)
byteStride.x = sizeOf(type);
if (byteStride.y == 0)
byteStride.y = numItems.x * byteStride.x;
if (byteStride.z == 0)
byteStride.z = numItems.y * byteStride.y;
#ifdef OSPRAY_TARGET_SYCL
// Check if the shared data the app gave is actually in USM, if not we still
// need to make a copy of it internally so it's accessible on the GPU
if (shared) {
devicert::Device &device = getISPCDevice().getDRTDevice();
const size_t sizeBytes = byteStride.z * numItems.z;
auto memType = device.getPointerType(addr);
switch (memType) {
case devicert::Alloc::Host:
default:
// std::cerr << "HOST..COPYING" << std::endl;
shared = false;
view = devicert::make_buffer_shared_unique<char>(device, sizeBytes);
addr = view->data();
std::memcpy(addr, appSharedPtr, sizeBytes);
break;
case devicert::Alloc::Shared:
// std::cerr << "SHARED..USE IN PLACE" << std::endl;
break;
case devicert::Alloc::Device:
static bool useDeviceMemory =
(rkcommon::utility::getEnvVar<int>("OSPRAY_ALLOW_DEVICE_MEMORY")
.value_or(0)
!= 0);
if (useDeviceMemory) {
// std::cerr << "DEVICE..USE IN PLACE" << std::endl;
addr = appSharedPtr;
} else {
// std::cerr << "DEVICE..COPYING" << std::endl;
shared = false;
// make ospray's shared buffer
view = devicert::make_buffer_shared_unique<char>(device, sizeBytes);
// copy to it
device.memcpy(view->sharedPtr(), appSharedPtr, sizeBytes);
addr = view->data();
}
break;
}
}
#endif
// precompute dominant axis and set at ispc-side proxy
if (dimensions != 1)
return;
ispc.byteStride = byteStride.x;
size_t numItems1D = numItems.x;
if (numItems.y > 1) {
ispc.byteStride = byteStride.y;
numItems1D = numItems.y;
} else if (numItems.z > 1) {
ispc.byteStride = byteStride.z;
numItems1D = numItems.z;
}
// finalize ispc-side
ispc.addr = reinterpret_cast<decltype(ispc.addr)>(addr);
ispc.huge = std::abs(ispc.byteStride) * numItems1D
> (size_t)std::numeric_limits<int32_t>::max();
ispc.numItems = (uint32_t)numItems1D;
}
bool Data::compact() const
{
return data() + sizeOf(type) * (size() - 1) == data(numItems - 1);
}
void Data::copy(const Data &source, const vec3ul &destinationIndex)
{
if (type != source.type
&& !(type == OSP_OBJECT && isObjectType(source.type))) {
throw std::runtime_error(toString()
+ "::copy: types must match (cannot copy '" + stringFor(source.type)
+ "' into '" + stringFor(type) + "')");
}
if (shared && !source.shared) {
throw std::runtime_error(
"OSPData::copy: cannot copy opaque (non-shared) data into shared "
"data");
}
if (anyLessThan(numItems, destinationIndex + source.numItems)) {
throw std::out_of_range(
"OSPData::copy: source does not fit into destination");
}
if (byteStride == source.byteStride
&& data(destinationIndex) == source.data()) {
// NoOP, no need to copy identical region
// TODO markDirty(destinationIndex, destinationIndex + source.numItems);
return;
}
index_sequence_3D srcIndices(source.numItems);
for (auto srcIdx : srcIndices) {
char *dst = data(srcIdx + destinationIndex);
const char *src = source.data(srcIdx);
if (isObjectType(type)) {
const ManagedObject **srcO = (const ManagedObject **)src;
if (*srcO)
(*srcO)->refInc();
const ManagedObject **dstO = (const ManagedObject **)dst;
if (*dstO)
(*dstO)->refDec();
*dstO = *srcO;
} else {
memcpy(dst, src, sizeOf(type));
}
}
}
#ifdef OSPRAY_TARGET_SYCL
void Data::commit()
{
// If we were passed "shared" data that was not actually in USM we made a USM
// copy of it, and need to update that copy on commit
if (appSharedPtr && addr != appSharedPtr) {
// FIXME: handle ISPCRT_ALLOC_TYPE_DEVICE memory (needs device copy)
const size_t sizeBytes = byteStride.z * numItems.z;
std::memcpy(addr, appSharedPtr, sizeBytes);
}
}
#endif
bool Data::isShared() const
{
return shared;
}
std::string Data::toString() const
{
return "ospray::Data";
}
OSPTYPEFOR_DEFINITION(Data *);
} // namespace ospray
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