Revision control
++ // 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->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_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::getBuffer(RTCBufferType type, unsigned int slot)
++ {
++ if (type == RTC_BUFFER_TYPE_GRID)
++ {
++ if (slot != 0)
++ throw_RTCError(RTC_ERROR_INVALID_ARGUMENT, "invalid buffer slot");
++ return grids.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 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");
++
++ Geometry::commit();
++ }
++
++ void GridMesh::addElementsToCount (GeometryCounts & counts) const
++ {
++ if (numTimeSteps == 1) counts.numGrids += numPrimitives;
++ else counts.numMBGrids += numPrimitives;
++ }
++
++ 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);
++ }
++
++ #endif
++
++ namespace isa
++ {
++ GridMesh* createGridMesh(Device* device) {
++ return new GridMeshISA(device);
++ }
++ }
++ }