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// Copyright 2009-2021 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
#include "scene_grid_mesh.h"
#include "scene.h"
namespace embree
{
#if defined(EMBREE_LOWEST_ISA)
GridMesh::GridMesh (Device* device)
: Geometry(device,GTY_GRID_MESH,0,1)
{
vertices.resize(numTimeSteps);
}
void GridMesh::setMask (unsigned mask)
{
this->mask = mask;
Geometry::update();
}
void GridMesh::setNumTimeSteps (unsigned int numTimeSteps)
{
vertices.resize(numTimeSteps);
Geometry::setNumTimeSteps(numTimeSteps);
}
void GridMesh::setVertexAttributeCount (unsigned int N)
{
vertexAttribs.resize(N);
Geometry::update();
}
void GridMesh::setBuffer(RTCBufferType type, unsigned int slot, RTCFormat format, const Ref<Buffer>& buffer, size_t offset, size_t stride, unsigned int num)
{
/* verify that all accesses are 4 bytes aligned */
if (((size_t(buffer->getHostPtr()) + offset) & 0x3) || (stride & 0x3))
throw_RTCError(RTC_ERROR_INVALID_OPERATION, "data must be 4 bytes aligned");
if (type == RTC_BUFFER_TYPE_VERTEX)
{
if (format != RTC_FORMAT_FLOAT3)
throw_RTCError(RTC_ERROR_INVALID_OPERATION, "invalid vertex buffer format");
/* if buffer is larger than 16GB the premultiplied index optimization does not work */
if (stride*num > 16ll*1024ll*1024ll*1024ll)
throw_RTCError(RTC_ERROR_INVALID_OPERATION, "vertex buffer can be at most 16GB large");
if (slot >= vertices.size())
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid vertex buffer slot");
vertices[slot].set(buffer, offset, stride, num, format);
vertices[slot].checkPadding16();
vertices0 = vertices[0];
}
else if (type == RTC_BUFFER_TYPE_VERTEX_ATTRIBUTE)
{
if (format < RTC_FORMAT_FLOAT || format > RTC_FORMAT_FLOAT16)
throw_RTCError(RTC_ERROR_INVALID_OPERATION, "invalid vertex attribute buffer format");
if (slot >= vertexAttribs.size())
throw_RTCError(RTC_ERROR_INVALID_OPERATION, "invalid vertex attribute buffer slot");
vertexAttribs[slot].set(buffer, offset, stride, num, format);
vertexAttribs[slot].checkPadding16();
}
else if (type == RTC_BUFFER_TYPE_GRID)
{
if (slot != 0)
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid buffer slot");
if (format != RTC_FORMAT_GRID)
throw_RTCError(RTC_ERROR_INVALID_OPERATION, "invalid index buffer format");
grids.set(buffer, offset, stride, num, format);
setNumPrimitives(num);
}
else
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "unknown buffer type");
}
void* GridMesh::getBufferData(RTCBufferType type, unsigned int slot, BufferDataPointerType pointerType)
{
if (type == RTC_BUFFER_TYPE_GRID)
{
if (slot != 0)
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid buffer slot");
return grids.getPtr(pointerType);
}
else if (type == RTC_BUFFER_TYPE_VERTEX)
{
if (slot >= vertices.size())
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid buffer slot");
return vertices[slot].getPtr(pointerType);
}
else if (type == RTC_BUFFER_TYPE_VERTEX_ATTRIBUTE)
{
if (slot >= vertexAttribs.size())
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid buffer slot");
return vertexAttribs[slot].getPtr(pointerType);
}
else
{
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "unknown buffer type");
return nullptr;
}
}
void GridMesh::updateBuffer(RTCBufferType type, unsigned int slot)
{
if (type == RTC_BUFFER_TYPE_GRID)
{
if (slot != 0)
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid buffer slot");
grids.setModified();
}
else if (type == RTC_BUFFER_TYPE_VERTEX)
{
if (slot >= vertices.size())
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid buffer slot");
vertices[slot].setModified();
}
else if (type == RTC_BUFFER_TYPE_VERTEX_ATTRIBUTE)
{
if (slot >= vertexAttribs.size())
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid buffer slot");
vertexAttribs[slot].setModified();
}
else
{
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "unknown buffer type");
}
Geometry::update();
}
void GridMesh::commit()
{
/* verify that stride of all time steps are identical */
for (unsigned int t=0; t<numTimeSteps; t++) {
if (vertices[t].getStride() != vertices[0].getStride())
throw_RTCError(RTC_ERROR_INVALID_OPERATION,"stride of vertex buffers have to be identical for each time step");
if (vertices[t]) vertices[t].buffer->commitIfNeeded();
}
if (grids) grids.buffer->commitIfNeeded();
#if defined(EMBREE_SYCL_SUPPORT)
/* build quadID_to_primID_xy mapping when hardware ray tracing is supported */
DeviceGPU* gpu_device = dynamic_cast<DeviceGPU*>(device);
if (gpu_device)
{
const size_t numQuads = getNumTotalQuads();
quadID_to_primID_xy.resize(numQuads);
for (uint32_t primID=0, quadID=0; primID<size(); primID++)
{
const Grid& g = grid(primID);
for (ssize_t y=0; y<ssize_t(g.resY)-1; y++)
for (ssize_t x=0; x<ssize_t(g.resX)-1; x++)
quadID_to_primID_xy[quadID++] = { primID, (uint16_t) x, (uint16_t) y };
}
}
#endif
Geometry::commit();
}
void GridMesh::addElementsToCount (GeometryCounts& counts) const
{
if (numTimeSteps == 1) {
counts.numGrids += numPrimitives;
for (size_t primID=0; primID<numPrimitives; primID++)
counts.numSubGrids += getNumSubGrids(primID);
}
else {
counts.numMBGrids += numPrimitives;
for (size_t primID=0; primID<numPrimitives; primID++)
counts.numMBSubGrids += getNumSubGrids(primID);
}
}
bool GridMesh::verify()
{
/*! verify size of vertex arrays */
if (vertices.size() == 0) return false;
for (const auto& buffer : vertices)
if (buffer.size() != numVertices())
return false;
/*! verify size of user vertex arrays */
for (const auto& buffer : vertexAttribs)
if (buffer.size() != numVertices())
return false;
/*! verify vertices */
for (const auto& buffer : vertices)
for (size_t i=0; i<buffer.size(); i++)
if (!isvalid(buffer[i]))
return false;
return true;
}
void GridMesh::interpolate(const RTCInterpolateArguments* const args) {
interpolate_impl<4>(args);
}
#if defined(EMBREE_SYCL_SUPPORT)
size_t GridMesh::getGeometryDataDeviceByteSize() const {
size_t byte_size = sizeof(GridMesh);
byte_size += numTimeSteps * sizeof(BufferView<Vec3fa>);
byte_size += quadID_to_primID_xy.size() * sizeof(PrimID_XY);
return 16 * ((byte_size + 15) / 16);
}
void GridMesh::convertToDeviceRepresentation(size_t offset, char* data_host, char* data_device) const {
GridMesh* mesh = (GridMesh*)(data_host + offset);
std::memcpy(data_host + offset, (void*)this, sizeof(GridMesh));
offset += sizeof(GridMesh);
// store offset for overriding vertices pointer with device pointer after copying
const size_t offsetVertices = offset;
// copy vertices BufferViews for each time step
for (size_t t = 0; t < numTimeSteps; ++t) {
std::memcpy(data_host + offset, &(vertices[t]), sizeof(BufferView<Vec3fa>));
offset += sizeof(BufferView<Vec3fa>);
}
// override vertices pointer with device ptr
mesh->vertices.setDataPtr((BufferView<Vec3fa>*)(data_device + offsetVertices));
std::memcpy(data_host + offset, quadID_to_primID_xy.data(), quadID_to_primID_xy.size() * sizeof(PrimID_XY));
mesh->quadID_to_primID_xy.setDataPtr((PrimID_XY*)(data_device + offset));
}
#endif
#endif
namespace isa
{
GridMesh* createGridMesh(Device* device) {
return new GridMeshISA(device);
}
}
}
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