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// Copyright 2009-2021 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
#include "scene_line_segments.h"
#include "scene.h"
namespace embree
{
#if defined(EMBREE_LOWEST_ISA)
LineSegments::LineSegments (Device* device, Geometry::GType gtype)
: Geometry(device,gtype,0,1), tessellationRate(4)
{
vertices.resize(numTimeSteps);
}
void LineSegments::setMask (unsigned mask)
{
this->mask = mask;
Geometry::update();
}
void LineSegments::setNumTimeSteps (unsigned int numTimeSteps)
{
vertices.resize(numTimeSteps);
if (getCurveType() == GTY_SUBTYPE_ORIENTED_CURVE)
normals.resize(numTimeSteps);
Geometry::setNumTimeSteps(numTimeSteps);
}
void LineSegments::setVertexAttributeCount (unsigned int N)
{
vertexAttribs.resize(N);
Geometry::update();
}
void LineSegments::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 ((type != RTC_BUFFER_TYPE_FLAGS) && (((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_FLOAT4)
throw_RTCError(RTC_ERROR_INVALID_OPERATION, "invalid vertex buffer format");
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();
}
else if (type == RTC_BUFFER_TYPE_NORMAL)
{
if (getCurveType() != GTY_SUBTYPE_ORIENTED_CURVE)
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "unknown buffer type");
if (format != RTC_FORMAT_FLOAT3)
throw_RTCError(RTC_ERROR_INVALID_OPERATION, "invalid normal buffer format");
if (slot >= normals.size())
throw_RTCError(RTC_ERROR_INVALID_OPERATION, "invalid normal buffer slot");
normals[slot].set(buffer, offset, stride, num, format);
normals[slot].checkPadding16();
}
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_INDEX)
{
if (slot != 0)
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid buffer slot");
if (format != RTC_FORMAT_UINT)
throw_RTCError(RTC_ERROR_INVALID_OPERATION, "invalid index buffer format");
segments.set(buffer, offset, stride, num, format);
setNumPrimitives(num);
}
else if (type == RTC_BUFFER_TYPE_FLAGS)
{
if (slot != 0)
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid buffer slot");
if (format != RTC_FORMAT_UCHAR)
throw_RTCError(RTC_ERROR_INVALID_OPERATION, "invalid flag buffer format");
flags.set(buffer, offset, stride, num, format);
flags.userData = 1; // to encode that app manages this buffer
}
else
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "unknown buffer type");
}
void* LineSegments::getBufferData(RTCBufferType type, unsigned int slot, BufferDataPointerType pointerType)
{
if (type == RTC_BUFFER_TYPE_INDEX)
{
if (slot != 0)
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid buffer slot");
return segments.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_NORMAL)
{
if (slot >= normals.size())
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid buffer slot");
return normals[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 if (type == RTC_BUFFER_TYPE_FLAGS)
{
if (slot != 0)
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid buffer slot");
return flags.getPtr(pointerType);
}
else
{
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "unknown buffer type");
return nullptr;
}
}
void LineSegments::updateBuffer(RTCBufferType type, unsigned int slot)
{
if (type == RTC_BUFFER_TYPE_INDEX)
{
if (slot != 0)
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid buffer slot");
segments.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_NORMAL)
{
if (slot >= normals.size())
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid buffer slot");
normals[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 if (type == RTC_BUFFER_TYPE_FLAGS)
{
if (slot != 0)
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid buffer slot");
flags.setModified();
}
else
{
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "unknown buffer type");
}
Geometry::update();
}
void LineSegments::setTessellationRate(float N) {
tessellationRate = clamp((int)N,1,16);
}
void LineSegments::setMaxRadiusScale(float s) {
maxRadiusScale = s;
}
void LineSegments::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");
vertices[t].buffer->commitIfNeeded();
}
for (auto& buffer : normals) {
if (buffer.getStride() != normals[0].getStride())
throw_RTCError(RTC_ERROR_INVALID_OPERATION,"stride of normal buffers have to be identical for each time step");
buffer.buffer->commitIfNeeded();
}
vertices0 = vertices[0];
if (getCurveType() == GTY_SUBTYPE_ORIENTED_CURVE)
normals0 = normals[0];
/* if no flags buffer is specified we manage and calculate the flags buffer */
if (!flags.buffer) flags.userData = 0; // to encode that we manage this buffer
bool recompute_flags_buffer = segments.isLocalModified();
/* resize flags buffer if number of primitives changed */
if (!flags.userData && (!flags.buffer || flags.size() != numPrimitives))
{
Ref<Buffer> buffer = new Buffer(device, numPrimitives*sizeof(char), nullptr, nullptr);
flags.set(buffer, 0, sizeof(char), numPrimitives, RTC_FORMAT_UCHAR);
recompute_flags_buffer = true;
}
/* recalculate the flags buffer if index buffer got modified */
if (!flags.userData && recompute_flags_buffer)
{
bool hasLeft = false;
for (size_t i=0; i<numPrimitives; i++) {
bool hasRight = (i==numPrimitives-1) ? false : segment(i+1) == segment(i)+1;
flags[i] = hasLeft * RTC_CURVE_FLAG_NEIGHBOR_LEFT;
flags[i] |= hasRight * RTC_CURVE_FLAG_NEIGHBOR_RIGHT;
hasLeft = hasRight;
}
flags.buffer->commit();
}
if (recompute_flags_buffer) {
segments.buffer->commit();
}
segments.clearLocalModified();
Geometry::commit();
}
void LineSegments::addElementsToCount (GeometryCounts & counts) const
{
if (numTimeSteps == 1) counts.numLineSegments += numPrimitives;
else counts.numMBLineSegments += numPrimitives;
}
bool LineSegments::verify ()
{
/*! verify consistent size of vertex arrays */
if (vertices.size() == 0)
return false;
for (const auto& buffer : vertices)
if (buffer.size() != numVertices())
return false;
for (const auto& buffer : normals)
if (vertices[0].size() != buffer.size())
return false;
/*! verify segment indices */
for (unsigned int i=0; i<size(); i++) {
if (segments[i]+1 >= numVertices()) return false;
}
/*! verify vertices */
for (const auto& buffer : vertices) {
for (size_t i=0; i<buffer.size(); i++) {
if (!isvalid(buffer[i].x)) return false;
if (!isvalid(buffer[i].y)) return false;
if (!isvalid(buffer[i].z)) return false;
if (!isvalid(buffer[i].w)) return false;
}
}
return true;
}
void LineSegments::interpolate(const RTCInterpolateArguments* const args) {
interpolate_impl<4>(args);
}
size_t LineSegments::getGeometryDataDeviceByteSize() const {
size_t byte_size = sizeof(LineSegments);
if (vertices.size() > 0)
byte_size += numTimeSteps * sizeof(BufferView<Vec3ff>);
if (normals.size() > 0)
byte_size += numTimeSteps * sizeof(BufferView<Vec3fa>);
return 16 * ((byte_size + 15) / 16);
}
void LineSegments::convertToDeviceRepresentation(size_t offset, char* data_host, char* data_device) const {
LineSegments* geom = (LineSegments*)(data_host + offset);
std::memcpy(data_host + offset, (void*)this, sizeof(LineSegments));
offset += sizeof(LineSegments);
if (vertices.size() > 0) {
const size_t offsetVertices = offset;
for (size_t t = 0; t < numTimeSteps; ++t) {
std::memcpy(data_host + offset, &(vertices[t]), sizeof(BufferView<Vec3ff>));
offset += sizeof(BufferView<Vec3ff>);
}
geom->vertices.setDataPtr((BufferView<Vec3ff>*)(data_device + offsetVertices));
}
if (normals.size() > 0) {
const size_t offsetNormals = offset;
for (size_t t = 0; t < numTimeSteps; ++t) {
std::memcpy(data_host + offset, &(normals[t]), sizeof(BufferView<Vec3fa>));
offset += sizeof(BufferView<Vec3fa>);
}
geom->normals.setDataPtr((BufferView<Vec3fa>*)(data_device + offsetNormals));
}
}
#endif
namespace isa
{
LineSegments* createLineSegments(Device* device, Geometry::GType gtype) {
return new LineSegmentsISA(device,gtype);
}
}
}
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