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// Copyright 2009-2021 Intel Corporation
// SPDX-License-Identifier: Apache-2.0
#include "scene_triangle_mesh.h"
#include "scene.h"
namespace embree
{
#if defined(EMBREE_LOWEST_ISA)
TriangleMesh::TriangleMesh (Device* device)
: Geometry(device,GTY_TRIANGLE_MESH,0,1)
{
vertices.resize(numTimeSteps);
}
void TriangleMesh::setMask (unsigned mask)
{
this->mask = mask;
Geometry::update();
}
void TriangleMesh::setNumTimeSteps (unsigned int numTimeSteps)
{
vertices.resize(numTimeSteps);
Geometry::setNumTimeSteps(numTimeSteps);
}
void TriangleMesh::setVertexAttributeCount (unsigned int N)
{
vertexAttribs.resize(N);
Geometry::update();
}
void TriangleMesh::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->getPtr()) + 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_INDEX)
{
if (slot != 0)
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid buffer slot");
if (format != RTC_FORMAT_UINT3)
throw_RTCError(RTC_ERROR_INVALID_OPERATION, "invalid index buffer format");
triangles.set(buffer, offset, stride, num, format);
setNumPrimitives(num);
}
else
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "unknown buffer type");
}
void* TriangleMesh::getBuffer(RTCBufferType type, unsigned int slot)
{
if (type == RTC_BUFFER_TYPE_INDEX)
{
if (slot != 0)
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid buffer slot");
return triangles.getPtr();
}
else if (type == RTC_BUFFER_TYPE_VERTEX)
{
if (slot >= vertices.size())
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid buffer slot");
return vertices[slot].getPtr();
}
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();
}
else
{
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "unknown buffer type");
return nullptr;
}
}
void TriangleMesh::updateBuffer(RTCBufferType type, unsigned int slot)
{
if (type == RTC_BUFFER_TYPE_INDEX)
{
if (slot != 0)
throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid buffer slot");
triangles.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 TriangleMesh::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");
Geometry::commit();
}
void TriangleMesh::addElementsToCount (GeometryCounts & counts) const
{
if (numTimeSteps == 1) counts.numTriangles += numPrimitives;
else counts.numMBTriangles += numPrimitives;
}
bool TriangleMesh::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 triangle indices */
for (size_t i=0; i<size(); i++) {
if (triangles[i].v[0] >= numVertices()) return false;
if (triangles[i].v[1] >= numVertices()) return false;
if (triangles[i].v[2] >= 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 TriangleMesh::interpolate(const RTCInterpolateArguments* const args) {
interpolate_impl<4>(args);
}
#endif
namespace isa
{
TriangleMesh* createTriangleMesh(Device* device) {
return new TriangleMeshISA(device);
}
}
}
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