alexpete
1512 lines
53 KiB
C++
1512 lines
53 KiB
C++
/*
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* All or portions of this file Copyright (c) Amazon.com, Inc. or its affiliates or
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* its licensors.
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*
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* For complete copyright and license terms please see the LICENSE at the root of this
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* distribution (the "License"). All use of this software is governed by the License,
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* or, if provided, by the license below or the license accompanying this file. Do not
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* remove or modify any license notices. This file is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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*
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*/
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// Original file Copyright Crytek GMBH or its affiliates, used under license.
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#include <Cry_Geo.h>
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#include "MeshCompiler.h"
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#include "TangentSpaceCalculation.h"
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#include "ForsythFaceReorderer.h"
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#include "PVRTTriStrip/PVRTTriStrip.h"
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#include <cstring> // memset()
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namespace mesh_compiler
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{
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//////////////////////////////////////////////////////////////////////////
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CMeshCompiler::CMeshCompiler()
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: m_pVertexMap(0)
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, m_pIndexMap(0)
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{
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}
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//////////////////////////////////////////////////////////////////////////
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CMeshCompiler::~CMeshCompiler()
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{
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}
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namespace
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{
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struct VertexLess
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{
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const CMesh& mesh;
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VertexLess(const CMesh& a_mesh)
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: mesh(a_mesh)
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{
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assert(mesh.m_pPositionsF16 == 0);
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}
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bool operator()(int a, int b) const
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{
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if (mesh.m_pTopologyIds && mesh.m_pTopologyIds[a] != mesh.m_pTopologyIds[b])
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{
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return mesh.m_pTopologyIds[a] < mesh.m_pTopologyIds[b];
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}
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int res = memcmp(&mesh.m_pPositions[a], &mesh.m_pPositions[b], sizeof(mesh.m_pPositions[a]));
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if (res)
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{
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return res < 0;
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}
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for (uint streamIndex = 0; streamIndex < CMesh::maxStreamsPerType; ++streamIndex)
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{
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SMeshTexCoord* texCoords = mesh.GetStreamPtr<SMeshTexCoord>(CMesh::TEXCOORDS, streamIndex);
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if (texCoords && (res = memcmp(&texCoords[a], &texCoords[b], sizeof(texCoords[a]))))
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{
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return res < 0;
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}
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}
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if ((mesh.m_pNorms && (res = memcmp(&mesh.m_pNorms[a], &mesh.m_pNorms[b], sizeof(mesh.m_pNorms[a])))) ||
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(mesh.m_pColor0 && (res = memcmp(&mesh.m_pColor0[a], &mesh.m_pColor0[b], sizeof(mesh.m_pColor0[a])))) ||
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(mesh.m_pColor1 && (res = memcmp(&mesh.m_pColor1[a], &mesh.m_pColor1[b], sizeof(mesh.m_pColor1[a])))) ||
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(mesh.m_pVertMats && (res = memcmp(&mesh.m_pVertMats[a], &mesh.m_pVertMats[b], sizeof(mesh.m_pVertMats[a])))) ||
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(mesh.m_pTangents && (res = memcmp(&mesh.m_pTangents[a], &mesh.m_pTangents[b], sizeof(mesh.m_pTangents[a])))))
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{
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return res < 0;
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}
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return false;
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}
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};
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// Copies a vertex from old to new mesh
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inline void CopyMeshVertex(CMesh& newMesh, int newVertex, const CMesh& oldMesh, int oldVertex)
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{
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assert(newVertex < newMesh.GetVertexCount());
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assert(newMesh.m_pPositionsF16 == 0);
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assert(oldMesh.m_pPositionsF16 == 0);
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newMesh.m_pPositions[newVertex] = oldMesh.m_pPositions[oldVertex];
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if (oldMesh.m_pNorms)
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{
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newMesh.m_pNorms[newVertex] = oldMesh.m_pNorms[oldVertex];
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}
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if (oldMesh.m_pTopologyIds)
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{
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newMesh.m_pTopologyIds[newVertex] = oldMesh.m_pTopologyIds[oldVertex];
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}
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for (uint streamIndex = 0; streamIndex < CMesh::maxStreamsPerType; ++streamIndex)
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{
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SMeshTexCoord* oldMeshTexCoords = oldMesh.GetStreamPtr<SMeshTexCoord>(CMesh::TEXCOORDS, streamIndex);
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if (oldMeshTexCoords)
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{
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SMeshTexCoord* newMeshTexCoords = newMesh.GetStreamPtr<SMeshTexCoord>(CMesh::TEXCOORDS, streamIndex);
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newMeshTexCoords[newVertex] = oldMeshTexCoords[oldVertex];
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}
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}
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if (oldMesh.m_pColor0)
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{
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newMesh.m_pColor0[newVertex] = oldMesh.m_pColor0[oldVertex];
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}
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if (oldMesh.m_pColor1)
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{
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newMesh.m_pColor1[newVertex] = oldMesh.m_pColor1[oldVertex];
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}
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if (oldMesh.m_pVertMats)
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{
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newMesh.m_pVertMats[newVertex] = oldMesh.m_pVertMats[oldVertex];
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}
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if (oldMesh.m_pTangents)
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{
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newMesh.m_pTangents[newVertex] = oldMesh.m_pTangents[oldVertex];
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}
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//New since Touch Bending Gem. A Mesh can have boneMappings.
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if (oldMesh.m_pBoneMapping)
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{
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newMesh.m_pBoneMapping[newVertex] = oldMesh.m_pBoneMapping[oldVertex];
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}
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}
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// Modified version of MeshUtils::Mesh::ComputeVertexRemapping()
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// Computes vertexOldToNew and vertexNewToOld by detecting duplicate vertices
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void ComputeVertexRemapping(const CMesh& mesh, std::vector<int>& vertexOldToNew, std::vector<int>& vertexNewToOld)
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{
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const size_t nVerts = mesh.GetVertexCount();
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vertexNewToOld.resize(nVerts);
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for (size_t i = 0; i < nVerts; ++i)
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{
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vertexNewToOld[i] = i;
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}
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VertexLess less(mesh);
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std::sort(vertexNewToOld.begin(), vertexNewToOld.end(), less);
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vertexOldToNew.resize(nVerts);
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int nVertsNew = 0;
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for (size_t i = 0; i < nVerts; ++i)
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{
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if (i == 0 || less(vertexNewToOld[i - 1], vertexNewToOld[i]))
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{
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vertexNewToOld[nVertsNew++] = vertexNewToOld[i];
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}
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vertexOldToNew[vertexNewToOld[i]] = nVertsNew - 1;
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}
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vertexNewToOld.resize(nVertsNew);
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}
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} // namespace
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//////////////////////////////////////////////////////////////////////////
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namespace
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{
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class CMeshInputProxy
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: public ITriangleInputProxy
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{
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struct Index
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{
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int index;
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int origPos;
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};
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template <class TComparator>
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void prepareUniqueIndices(std::vector<int>& outIndices, std::vector<Index>& tmp, const TComparator& comparator)
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{
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const int faceCount = m_mesh.GetFaceCount();
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tmp.resize(faceCount * 3);
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outIndices.resize(faceCount * 3, -1);
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for (int i = 0; i < faceCount; ++i)
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{
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for (int j = 0; j < 3; ++j)
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{
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tmp[i * 3 + j].index = m_mesh.m_pFaces[i].v[j];
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tmp[i * 3 + j].origPos = i * 3 + j;
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}
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}
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std::sort(tmp.begin(), tmp.end(), comparator);
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int curIndex = -1;
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for (int i = 0, n = faceCount * 3; i < n; ++i)
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{
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if (curIndex < 0 || comparator(tmp[i - 1], tmp[i]))
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{
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curIndex = tmp[i].index;
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}
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outIndices[tmp[i].origPos] = curIndex;
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}
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}
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const char* ValidateMesh() const
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{
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if (m_mesh.m_pPositionsF16)
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{
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return "the mesh has 16-bit positions";
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}
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if (!m_mesh.m_pFaces)
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{
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return "the mesh has no stream with faces";
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}
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if (!m_mesh.m_pPositions)
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{
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return "the mesh has no stream with positions";
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}
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if (!m_mesh.m_pNorms)
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{
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return "the mesh has no stream with normals";
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}
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if (!m_mesh.m_pTexCoord)
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{
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return "the mesh has no stream with texture coordinates";
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}
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const int faceCount = m_mesh.GetFaceCount();
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const int vertexCount = m_mesh.GetVertexCount();
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const int texCoordCount = m_mesh.GetTexCoordCount();
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if (faceCount <= 0)
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{
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return "face count in the mesh is 0";
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}
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if (vertexCount <= 0)
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{
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return "vertex count in the mesh is 0";
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}
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if (texCoordCount <= 0)
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{
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return "texture coordinate count in the mesh is 0";
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}
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if (vertexCount != texCoordCount)
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{
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return "mismatch in number of positions and texture coordinates in the mesh";
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}
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for (int i = 0; i < faceCount; ++i)
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{
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for (int j = 0; j < 3; ++j)
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{
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const int vIdx = m_mesh.m_pFaces[i].v[j];
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if (vIdx < 0 || vIdx >= vertexCount)
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{
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return "a face in the mesh has vertex index that is out of range";
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}
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}
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}
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// Trying to trigger a crash if a stream size is not correct
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{
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Vec3 v(0.0f, 0.0f, 0.0f);
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SMeshNormal n(v);
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SMeshTexCoord uv(0, 0);
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v = m_mesh.m_pPositions[0];
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v = m_mesh.m_pPositions[vertexCount - 1];
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n = m_mesh.m_pNorms[0];
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n = m_mesh.m_pNorms[vertexCount - 1];
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uv = m_mesh.m_pTexCoord[0];
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uv = m_mesh.m_pTexCoord[vertexCount - 1];
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}
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return 0;
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}
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public:
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CMeshInputProxy(const CMesh& inMesh)
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: m_mesh(inMesh)
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{
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m_pErrorText = ValidateMesh();
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if (m_pErrorText)
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{
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return;
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}
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assert(m_mesh.m_pPositionsF16 == 0);
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struct PositionComparator
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{
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const Vec3* const pPositions;
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const int* const pTopologyIds;
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PositionComparator(const Vec3* const a_pPositions, const int* const a_pTopologyIds)
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: pPositions(a_pPositions)
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, pTopologyIds(a_pTopologyIds)
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{
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}
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bool operator()(const Index& v0, const Index& v1) const
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{
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if (pTopologyIds)
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{
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const int a = pTopologyIds[v0.index];
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const int b = pTopologyIds[v1.index];
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if (a != b)
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{
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return a < b;
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}
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}
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const Vec3& a = pPositions[v0.index];
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const Vec3& b = pPositions[v1.index];
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if (a.x != b.x)
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{
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return a.x < b.x;
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}
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if (a.y != b.y)
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{
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return a.y < b.y;
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}
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return a.z < b.z;
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}
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};
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struct NormalComparator
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{
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const SMeshNormal* const pNormals;
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NormalComparator(const SMeshNormal* const a_pNormals)
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: pNormals(a_pNormals)
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{
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}
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bool operator()(const Index& v0, const Index& v1) const
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{
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const SMeshNormal& a = pNormals[v0.index];
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const SMeshNormal& b = pNormals[v1.index];
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return a < b;
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}
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};
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struct TexCoordComparator
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{
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const SMeshTexCoord* const pTexCoords;
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TexCoordComparator(const SMeshTexCoord* const a_pTexCoords)
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: pTexCoords(a_pTexCoords)
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{
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}
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bool operator()(const Index& v0, const Index& v1) const
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{
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const SMeshTexCoord& a = pTexCoords[v0.index];
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const SMeshTexCoord& b = pTexCoords[v1.index];
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return a < b;
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}
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};
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std::vector<Index> tmp;
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prepareUniqueIndices(m_posIndx, tmp, PositionComparator(m_mesh.m_pPositions, m_mesh.m_pTopologyIds));
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prepareUniqueIndices(m_normIndx, tmp, NormalComparator(m_mesh.m_pNorms));
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prepareUniqueIndices(m_texCoordIndx, tmp, TexCoordComparator(m_mesh.m_pTexCoord));
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SMeshTexCoord* texCoords = m_mesh.GetStreamPtr<SMeshTexCoord>(CMesh::TEXCOORDS, 1);
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if (texCoords)
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{
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prepareUniqueIndices(m_texCoord2Indx, tmp, TexCoordComparator(texCoords));
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}
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}
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const char* GetErrorText() const
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{
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return m_pErrorText;
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}
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// interface ITriangleInputProxy ----------------------------------------------
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//! /return 0..
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uint32 GetTriangleCount() const
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{
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return m_mesh.GetFaceCount();
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}
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//! /param indwTriNo 0..
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//! /param outdwPos
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//! /param outdwNorm
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//! /param outdwUV
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void GetTriangleIndices(const uint32 indwTriNo, uint32 outdwPos[3], uint32 outdwNorm[3], uint32 outdwUV[3]) const
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{
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const int* const pPosInds = &m_posIndx[indwTriNo * 3];
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const int* const pNormInds = &m_normIndx[indwTriNo * 3];
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const int* const pTexCoordInds = &m_texCoordIndx[indwTriNo * 3];
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for (int j = 0; j < 3; ++j)
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{
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outdwPos[j] = pPosInds[j];
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outdwUV[j] = pTexCoordInds[j];
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outdwNorm[j] = pNormInds[j];
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}
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}
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//! /param indwPos 0..
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//! /param outfPos
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void GetPos(const uint32 indwPos, Vec3& outfPos) const
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{
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assert(!m_pErrorText);
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assert((int)indwPos < m_mesh.GetVertexCount());
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outfPos = m_mesh.m_pPositions[indwPos];
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}
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//! /param indwPos 0..
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//! /param outfUV
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void GetUV(const uint32 indwPos, Vec2& outfUV) const
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{
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assert(!m_pErrorText);
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assert((int)indwPos < m_mesh.GetTexCoordCount());
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outfUV = m_mesh.m_pTexCoord[indwPos].GetUV();
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}
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//! /param indwTriNo 0..
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//! /param indwVertNo 0..
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//! /param outfNorm
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void GetNorm(const uint32 indwTriNo, const uint32 indwVertNo, Vec3& outfNorm) const
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{
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assert(!m_pErrorText);
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assert((int)indwTriNo < m_mesh.GetFaceCount());
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assert((int)indwVertNo < 3);
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const int vIdx = m_mesh.m_pFaces[indwTriNo].v[indwVertNo];
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assert(vIdx < m_mesh.GetVertexCount());
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outfNorm = m_mesh.m_pNorms[vIdx].GetN();
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}
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//-----------------------------------------------------------------------------
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private:
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const CMesh& m_mesh;
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const char* m_pErrorText;
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std::vector<int> m_posIndx; // indices of unique positions (in mesh.m_pPositions) for each corner of each triangle
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std::vector<int> m_normIndx; // indices of unique normals (in mesh.m_pNorms) for each corner of each triangle
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std::vector<int> m_texCoordIndx; // indices of unique texture coordinates normals (in mesh.m_pTexCoord) for each corner of each triangle
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std::vector<int> m_texCoord2Indx; // indices of unique texture coordinates normals (in mesh.m_pTexCoord[1]) for each corner of each triangle for the 2nd uv set
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};
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}
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//do not use vec3 lib to keep it the fallback as it was
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inline static Vec3 CrossProd(const Vec3& a, const Vec3& b)
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{
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Vec3 ret;
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ret.x = a.y * b.z - a.z * b.y;
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ret.y = a.z * b.x - a.x * b.z;
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ret.z = a.x * b.y - a.y * b.x;
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return ret;
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}
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inline static void GetOtherBaseVec(const Vec3& s, Vec3& a, Vec3& b)
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{
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if (fabsf(s.z) > 0.5f)
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{
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a.x = s.z;
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a.y = s.y;
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a.z = -s.x;
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}
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else
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{
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a.x = s.y;
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a.y = -s.x;
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a.z = s.z;
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}
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b = CrossProd(s, a).normalize();
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a = CrossProd(b, s).normalize();
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}
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//check packed tangent space and ensure some useful values, fix always according to normal
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static void VerifyTangentSpace(SMeshTangents& rTangents, const SMeshNormal& rNormal)
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{
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Vec3 normal = rNormal.GetN();
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if (normal.GetLengthSquared() < 0.1f)
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{
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normal = Vec3(0, 0, 1);
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}
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else if (normal.GetLengthSquared() < 0.9f)
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{
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normal.Normalize();
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}
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//unpack first(necessary since the quantization can introduce errors whereas the original float data were different)
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Vec3 tangent, bitangent;
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rTangents.GetTB(tangent, bitangent);
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//check if they are equal
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const bool cIsEqual = (tangent == bitangent);
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//check if they are zero
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const bool cTangentIsZero = (tangent.GetLengthSquared() < 0.01f);
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const bool cBitangentIsZero = (bitangent.GetLengthSquared() < 0.01f);
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const bool cbHasBeenChanged = (cIsEqual || cTangentIsZero || cBitangentIsZero);
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if (cIsEqual)
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{
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//fix case where both vec's are equal
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GetOtherBaseVec(normal, tangent, bitangent);
|
|
}
|
|
else
|
|
if (cTangentIsZero)
|
|
{
|
|
//fix case where tangent is zero
|
|
bitangent.Normalize();//just to make sure
|
|
if (abs(bitangent * normal) > 0.9f)//if angle between both vecs is to low, calc new one for both
|
|
{
|
|
GetOtherBaseVec(normal, tangent, bitangent);
|
|
}
|
|
else
|
|
{
|
|
tangent = CrossProd(normal, bitangent);
|
|
}
|
|
}
|
|
else
|
|
if (cBitangentIsZero)
|
|
{
|
|
//fix case where bitangent is zero
|
|
tangent.Normalize();//just to make sure
|
|
if (abs(tangent * normal) > 0.9f)//if angle between both vecs is to low, calc new one for both
|
|
{
|
|
GetOtherBaseVec(normal, tangent, bitangent);
|
|
}
|
|
else
|
|
{
|
|
bitangent = CrossProd(tangent, normal);
|
|
}
|
|
}
|
|
|
|
//pack altered tangent vecs
|
|
if (cbHasBeenChanged)
|
|
{
|
|
rTangents = SMeshTangents(tangent, bitangent, normal);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
// Optimizes CMesh.
|
|
// IMPLEMENTATION:
|
|
// . Sort|Group faces by materials
|
|
// . Create vertex buffer with sequence of (possibly non-unique) vertices, 3 verts per face
|
|
// . For each (non-unique) vertex calculate the tangent base
|
|
// . Index the mesh (Compact Vertices): detect and delete duplicate vertices
|
|
// . Remove degenerated triangles in the generated mesh (GetIndices())
|
|
// . Sort vertices and indices for GPU cache
|
|
bool CMeshCompiler::Compile(CMesh& mesh, int flags)
|
|
{
|
|
assert(mesh.m_pPositionsF16 == 0);
|
|
|
|
if (mesh.GetFaceCount() == 0)
|
|
{
|
|
// the mesh is either empty or already compiled
|
|
|
|
const int cVertexCount = mesh.GetVertexCount();
|
|
if (cVertexCount == 0)
|
|
{
|
|
// the mesh is empty, nothing to do
|
|
return true;
|
|
}
|
|
|
|
// the mesh is already compiled, likely to have a refresh here: just verify and correct tangent space
|
|
if (mesh.m_pTangents && mesh.m_pNorms)
|
|
{
|
|
for (int i = 0; i < cVertexCount; ++i)
|
|
{
|
|
VerifyTangentSpace(mesh.m_pTangents[i], mesh.m_pNorms[i]);
|
|
}
|
|
}
|
|
|
|
|
|
// Confetti begin: David Srour
|
|
// A CGF is already compiled as soon as a mesh is imported in the editor.
|
|
// Thus, the following code path branch will only get hit if:
|
|
// - RC job is being done outside the editor (eg. when compiling mobile resources via XML file)
|
|
// - Job input is an already compiled CGF file
|
|
// - "Refresh" was specific to force recompile
|
|
// - "OptimizedPrimitiveType = 1" to specify PowerVR stripify algorithm
|
|
if (flags & MESH_COMPILE_PVR_STRIPIFY)
|
|
{
|
|
const bool bOk = StripifyMesh_PVRTriStripList(mesh);
|
|
if (!bOk)
|
|
{
|
|
m_LastError.Format("Mesh compilation failed - stripifier failed. Contact an RC programmer.");
|
|
return false;
|
|
}
|
|
FindVertexRanges(mesh);
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
// the mesh has faces - it means that it's a non-compiled mesh. let's compile it.
|
|
|
|
// Check input data
|
|
{
|
|
if (mesh.GetIndexCount() > 0)
|
|
{
|
|
m_LastError.Format(
|
|
"Mesh compilation failed - input mesh has both indices and faces. Contact an RC programmer.");
|
|
return false;
|
|
}
|
|
|
|
const int vertexCount = mesh.GetVertexCount();
|
|
const int faceCount = mesh.GetFaceCount();
|
|
const int subSetCount = mesh.GetSubSetCount();
|
|
|
|
if (subSetCount >= MAX_SUB_MATERIALS)
|
|
{
|
|
m_LastError.Format(
|
|
"Mesh compilation failed - Number of subsets (%d) exceeds the maximum amount of sub-materials (%d).",
|
|
subSetCount, MAX_SUB_MATERIALS);
|
|
return false;
|
|
}
|
|
|
|
for (int i = 0; i < faceCount; ++i)
|
|
{
|
|
const SMeshFace& face = mesh.m_pFaces[i];
|
|
if (face.nSubset < 0 || face.nSubset >= subSetCount)
|
|
{
|
|
m_LastError.Format(
|
|
"Mesh compilation failed - face %d has bad subset index %d (allowed range is [0;%d]). Contact an RC programmer.",
|
|
i, (int)face.nSubset, subSetCount - 1);
|
|
return false;
|
|
}
|
|
for (int j = 0; j < 3; ++j)
|
|
{
|
|
const int vIdx = mesh.m_pFaces[i].v[j];
|
|
if (vIdx < 0 || vIdx >= vertexCount)
|
|
{
|
|
m_LastError.Format(
|
|
"Mesh compilation failed - face %d has bad vertex index %d (allowed range is [0;%d]). Contact an RC programmer.",
|
|
i, vIdx, vertexCount - 1);
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
// Calculate Tangent Space.
|
|
// Results will be stored in bases[] and m_thash_table[]
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
std::vector<SMeshTangents> bases;
|
|
|
|
// m_thash_table[] contains a std::vector<SBasisFace> per subset.
|
|
// Vector contains faces belonging to the subset.
|
|
// Face contains three indices of elements in bases[].
|
|
COMPILE_TIME_ASSERT(sizeof(m_thash_table) / sizeof(m_thash_table[0]) == MAX_SUB_MATERIALS);
|
|
for (int i = 0; i < MAX_SUB_MATERIALS; ++i)
|
|
{
|
|
m_thash_table[i].clear();
|
|
}
|
|
|
|
if (flags & MESH_COMPILE_TANGENTS)
|
|
{
|
|
// Generate tangent basis vectors before indexing per-material
|
|
|
|
CMeshInputProxy Input(mesh);
|
|
if (Input.GetErrorText())
|
|
{
|
|
m_LastError.Format("Mesh compilation failed - %s. Contact an RC or Editor programmer.", Input.GetErrorText());
|
|
return false;
|
|
}
|
|
|
|
CTangentSpaceCalculation tangents;
|
|
string errorMessage;
|
|
|
|
// calculate the base matrices
|
|
const bool bUseCustomNormals = (flags & MESH_COMPILE_USECUSTOMNORMALS) ? true : false;
|
|
const eCalculateTangentSpaceErrorCode nErrorCode = tangents.CalculateTangentSpace(Input, bUseCustomNormals, errorMessage);
|
|
|
|
if (nErrorCode != CALCULATE_TANGENT_SPACE_NO_ERRORS)
|
|
{
|
|
const char* errorCodeMessage;
|
|
|
|
switch (nErrorCode)
|
|
{
|
|
case VERTICES_SHARING_COORDINATES:
|
|
errorCodeMessage = "Asset contains non-manifold geometry.\nPlease fix the model in your DCC tool to solve this issue.\n";
|
|
break;
|
|
case ALL_VERTICES_ON_THE_SAME_VECTOR:
|
|
errorCodeMessage = "Asset contains non-manifold geometry.\nPlease fix the model in your DCC tool to solve this issue.\n";
|
|
break;
|
|
case BROKEN_TEXTURE_COORDINATES:
|
|
errorCodeMessage = "Texture UV coordinates are not valid.\nCheck that the UV's have space on the UV map in your DCC tool to solve this issue.\n";
|
|
break;
|
|
case MEMORY_ALLOCATION_FAILED:
|
|
errorCodeMessage = "Mesh compiler failed to allocate memory for compilation.\nYou can reduce the size of your mesh to attempt to solve this issue.\n";
|
|
break;
|
|
default:
|
|
AZ_Assert(false, "Unknown error code. Please implement a failure message.");
|
|
errorCodeMessage = "Unknown error code encountered.\nThis happens when a programmer has not implemented a message for an error code.\n";
|
|
break;
|
|
}
|
|
|
|
m_LastError.Format("\n%s%sCalculateTangentSpace() failed - error code: %d", errorCodeMessage, errorMessage.c_str(), nErrorCode);
|
|
return false;
|
|
}
|
|
|
|
const uint32 dwCnt = tangents.GetBaseCount();
|
|
const uint32 dwTris = Input.GetTriangleCount();
|
|
|
|
bases.resize(dwCnt);
|
|
|
|
std::vector<int> basisIndices;
|
|
basisIndices.resize(dwTris * 3);
|
|
|
|
for (uint32 dwTri = 0; dwTri < dwTris; dwTri++)
|
|
{
|
|
uint32 dwBaseIndx[3];
|
|
|
|
tangents.GetTriangleBaseIndices(dwTri, dwBaseIndx);
|
|
|
|
// for every corner of the triangle
|
|
for (uint32 i = 0; i < 3; i++)
|
|
{
|
|
assert(dwBaseIndx[i] < dwCnt);
|
|
basisIndices[dwTri * 3 + i] = dwBaseIndx[i]; // set the base vector
|
|
}
|
|
}
|
|
|
|
for (uint32 i = 0; i < dwCnt; i++)
|
|
{
|
|
Vec3 Tangent, Bitangent, Normal;
|
|
|
|
tangents.GetBase(i, (float*)&Tangent, (float*)&Bitangent, (float*)&Normal);
|
|
|
|
bases[i] = SMeshTangents(Tangent, Bitangent, Normal);
|
|
|
|
VerifyTangentSpace(bases[i], SMeshNormal(Normal));
|
|
}
|
|
|
|
const int faceCount = mesh.GetFaceCount();
|
|
for (int i = 0; i < faceCount; i++)
|
|
{
|
|
SBasisFace fc;
|
|
|
|
fc.v[0] = basisIndices[i * 3 + 0];
|
|
fc.v[1] = basisIndices[i * 3 + 1];
|
|
fc.v[2] = basisIndices[i * 3 + 2];
|
|
|
|
const SMeshFace& face = mesh.m_pFaces[i];
|
|
m_thash_table[face.nSubset].push_back(fc);
|
|
}
|
|
}
|
|
//////////////////////////////////////////////////////////////////////////
|
|
|
|
// Create new mesh that will store non-unique vertices, 3 vertices per face
|
|
|
|
const int max_vert_num = mesh.GetFaceCount() * 3;
|
|
|
|
CMesh outMesh;
|
|
outMesh.Copy(mesh);
|
|
outMesh.SetVertexCount(max_vert_num);
|
|
outMesh.ReallocStream(CMesh::VERT_MATS, 0, max_vert_num);
|
|
if (mesh.m_pTopologyIds)
|
|
{
|
|
outMesh.ReallocStream(CMesh::TOPOLOGY_IDS, 0, max_vert_num);
|
|
}
|
|
if (mesh.m_pTexCoord)
|
|
{
|
|
outMesh.ReallocStream(CMesh::TEXCOORDS, 0, max_vert_num);
|
|
}
|
|
if (mesh.GetStreamPtr<SMeshTexCoord>(CMesh::TEXCOORDS, 1))
|
|
{
|
|
outMesh.ReallocStream(CMesh::TEXCOORDS, 1, max_vert_num);
|
|
}
|
|
if (flags & MESH_COMPILE_TANGENTS)
|
|
{
|
|
outMesh.ReallocStream(CMesh::TANGENTS, 0, max_vert_num);
|
|
}
|
|
if (mesh.m_pColor0)
|
|
{
|
|
outMesh.ReallocStream(CMesh::COLORS, 0, max_vert_num);
|
|
}
|
|
if (mesh.m_pColor1)
|
|
{
|
|
outMesh.ReallocStream(CMesh::COLORS, 1, max_vert_num);
|
|
}
|
|
//New Since Touch Bending Gem. A Touch Bendable Mesh has bone mappings.
|
|
if (mesh.m_pBoneMapping)
|
|
{
|
|
outMesh.ReallocStream(CMesh::BONEMAPPING, 0, max_vert_num);
|
|
}
|
|
|
|
// temporarily store original subset index in subset's nNumVerts
|
|
{
|
|
const uint32 nSubsets = outMesh.GetSubSetCount();
|
|
for (uint32 i = 0; i < nSubsets; i++)
|
|
{
|
|
outMesh.m_subsets[i].nNumVerts = i;
|
|
}
|
|
}
|
|
|
|
// Sort subsets depending on their physicalization type (don't do it for character meshes (with mapping)).
|
|
if (!m_pVertexMap)
|
|
{
|
|
// move normal physicalize subsets to the beginning (needed for breakable objects)
|
|
for (uint32 i = 0; i < (uint32)outMesh.m_subsets.size(); i++)
|
|
{
|
|
const SMeshSubset& outSubset = outMesh.m_subsets[i];
|
|
if (outSubset.nPhysicalizeType == PHYS_GEOM_TYPE_DEFAULT)
|
|
{
|
|
const SMeshSubset tmp = outSubset;
|
|
outMesh.m_subsets.erase(outMesh.m_subsets.begin() + i);
|
|
outMesh.m_subsets.insert(outMesh.m_subsets.begin(), tmp);
|
|
}
|
|
}
|
|
// move physicalize proxy subsets to the end
|
|
for (int nSubset = (int)outMesh.m_subsets.size() - 1; nSubset >= 0; --nSubset)
|
|
{
|
|
const SMeshSubset& outSubset = outMesh.m_subsets[nSubset];
|
|
if (outSubset.nPhysicalizeType != PHYS_GEOM_TYPE_NONE && outSubset.nPhysicalizeType != PHYS_GEOM_TYPE_DEFAULT)
|
|
{
|
|
const SMeshSubset tmp = outSubset;
|
|
outMesh.m_subsets.erase(outMesh.m_subsets.begin() + nSubset);
|
|
outMesh.m_subsets.push_back(tmp);
|
|
}
|
|
}
|
|
}
|
|
|
|
// m_vhash_table[] contains a std::vector<SMeshFace> per subset.
|
|
// Vector contains faces belonging to the subset.
|
|
// Face contains three indices of elements in mesh.m_pVertices[].
|
|
COMPILE_TIME_ASSERT(sizeof(m_vhash_table) / sizeof(m_vhash_table[0]) == MAX_SUB_MATERIALS);
|
|
for (int i = 0; i < MAX_SUB_MATERIALS; ++i)
|
|
{
|
|
m_vhash_table[i].clear();
|
|
}
|
|
for (int i = 0, n = mesh.GetFaceCount(); i < n; ++i)
|
|
{
|
|
const SMeshFace& face = mesh.m_pFaces[i];
|
|
m_vhash_table[face.nSubset].push_back(&face);
|
|
}
|
|
|
|
// Fill the new mesh with vertices
|
|
{
|
|
int buff_vert_count = 0;
|
|
|
|
for (int t = 0; t < outMesh.GetSubSetCount(); t++)
|
|
{
|
|
SMeshSubset& subset = outMesh.m_subsets[t];
|
|
// memorize the starting index of this material's face range
|
|
subset.nFirstIndexId = buff_vert_count;
|
|
|
|
// scan through all the faces using the shader #t.
|
|
// note: subset's nNumVerts contains original subset index
|
|
const size_t nNumFacesInSubset = m_vhash_table[subset.nNumVerts].size();
|
|
for (size_t i = 0; i < nNumFacesInSubset; ++i)
|
|
{
|
|
const SMeshFace* const pFace = m_vhash_table[subset.nNumVerts][i];
|
|
|
|
for (int v = 0; v < 3; ++v)
|
|
{
|
|
CopyMeshVertex(outMesh, buff_vert_count, mesh, pFace->v[v]);
|
|
|
|
if (!bases.empty())
|
|
{
|
|
const SBasisFace& tFace = m_thash_table[subset.nNumVerts][i];
|
|
outMesh.m_pTangents[buff_vert_count] = bases[tFace.v[v]];
|
|
}
|
|
|
|
// store subset id to prevent vertex sharing between materials during re-compacting
|
|
outMesh.m_pVertMats[buff_vert_count] = pFace->nSubset;
|
|
|
|
++buff_vert_count;
|
|
}
|
|
}
|
|
|
|
subset.nNumIndices = buff_vert_count - subset.nFirstIndexId;
|
|
}
|
|
|
|
if (buff_vert_count != max_vert_num)
|
|
{
|
|
m_LastError.Format("Mesh compilation failed - internal error inf handling vertices. Contact an RC programmer.");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (!CreateIndicesAndDeleteDuplicateVertices(outMesh))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (flags & MESH_COMPILE_VALIDATE_FAIL_ON_DEGENERATE_FACES)
|
|
{
|
|
if(CheckForDegenerateFaces(outMesh))
|
|
{
|
|
m_LastError.Format("Mesh contains degenerate faces.");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
if (flags & MESH_COMPILE_OPTIMIZE)
|
|
{
|
|
const bool bOk = StripifyMesh_Forsyth(outMesh);
|
|
if (!bOk)
|
|
{
|
|
m_LastError.Format("Mesh compilation failed - stripifier failed. Contact an RC programmer.");
|
|
return false;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
if (m_pIndexMap || m_pVertexMap)
|
|
{
|
|
m_LastError.Format("Mesh compilation failed - face and/or index maps cannot be requested without OPTIMIZE. Contact an RC programmer.");
|
|
return false;
|
|
}
|
|
}
|
|
|
|
FindVertexRanges(outMesh);
|
|
|
|
// Copy modified mesh back to original one.
|
|
mesh.Copy(outMesh);
|
|
|
|
// Calculate bounding box.
|
|
mesh.m_bbox.Reset();
|
|
for (int i = 0, n = mesh.GetVertexCount(); i < n; ++i)
|
|
{
|
|
mesh.m_bbox.Add(mesh.m_pPositions[i]);
|
|
}
|
|
|
|
if (flags & MESH_COMPILE_VALIDATE)
|
|
{
|
|
const char* pErrorDescription = 0;
|
|
if (!mesh.Validate(&pErrorDescription))
|
|
{
|
|
m_LastError.Format("Internal error in mesh compiling (%s). Contact an RC programmer.", pErrorDescription);
|
|
return false;
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
bool CMeshCompiler::StripifyMesh_Forsyth(CMesh& mesh)
|
|
{
|
|
if (mesh.GetFaceCount() > 0)
|
|
{
|
|
// We don't support stripifying of meshes with explicit faces, we support meshes with index array only
|
|
return false;
|
|
}
|
|
|
|
enum
|
|
{
|
|
kCACHESIZE_GEFORCE3 = 24
|
|
};
|
|
const size_t cacheSize = kCACHESIZE_GEFORCE3;
|
|
enum
|
|
{
|
|
kVerticesPerFace = 3
|
|
};
|
|
|
|
// Prepare mapping buffers
|
|
if (m_pIndexMap)
|
|
{
|
|
const int n = mesh.GetIndexCount();
|
|
m_pIndexMap->resize(n);
|
|
for (int i = 0; i < n; ++i)
|
|
{
|
|
(*m_pIndexMap)[i] = mesh.m_pIndices[i];
|
|
}
|
|
}
|
|
if (m_pVertexMap)
|
|
{
|
|
const int n = mesh.GetVertexCount();
|
|
m_pVertexMap->resize(n, -1);
|
|
}
|
|
|
|
|
|
CMesh newMesh;
|
|
newMesh.Copy(mesh);
|
|
|
|
// TODO: make those variables members of CMeshCompiler so we don't need to allocate memory every time
|
|
ForsythFaceReorderer ffr;
|
|
std::vector<uint32> buffer0;
|
|
std::vector<uint32> buffer1;
|
|
|
|
// Reserve space
|
|
//
|
|
// We will use buffer0 for both subset's indices and for mapping from old vertex indices
|
|
// to new vertex indices (number of vertices decreases in case some vertices are not
|
|
// referenced from indices). In the latter case having size of buffer0 equal to number of
|
|
// indices is not enough if indices refer vertices in a spare fashion. Unfortunately,
|
|
// to compute range of referenced vertices we need to scan all indices in all subsets
|
|
// which is not fast.
|
|
{
|
|
int maxIndexCountInSubset = 0;
|
|
int maxVertexCountInSubset = 0;
|
|
|
|
for (int i = 0; i < newMesh.GetSubSetCount(); i++)
|
|
{
|
|
const SMeshSubset& subset = mesh.m_subsets[i];
|
|
|
|
if (subset.nNumIndices == 0)
|
|
{
|
|
continue;
|
|
}
|
|
if (subset.nNumIndices < 0)
|
|
{
|
|
assert(0);
|
|
return false;
|
|
}
|
|
if (subset.nNumIndices % kVerticesPerFace != 0)
|
|
{
|
|
assert(0);
|
|
return false;
|
|
}
|
|
if (subset.nFirstIndexId % kVerticesPerFace != 0)
|
|
{
|
|
assert(0);
|
|
return false;
|
|
}
|
|
|
|
if (maxIndexCountInSubset < subset.nNumIndices)
|
|
{
|
|
maxIndexCountInSubset = subset.nNumIndices;
|
|
}
|
|
|
|
int subsetMinIndex = mesh.m_pIndices[subset.nFirstIndexId];
|
|
int subsetMaxIndex = subsetMinIndex;
|
|
for (int j = 1; j < subset.nNumIndices; ++j)
|
|
{
|
|
const int idx = mesh.m_pIndices[subset.nFirstIndexId + j];
|
|
if (idx < subsetMinIndex)
|
|
{
|
|
subsetMinIndex = idx;
|
|
}
|
|
else if (idx > subsetMaxIndex)
|
|
{
|
|
subsetMaxIndex = idx;
|
|
}
|
|
}
|
|
|
|
if (maxVertexCountInSubset < subsetMaxIndex - subsetMinIndex + 1)
|
|
{
|
|
maxVertexCountInSubset = subsetMaxIndex - subsetMinIndex + 1;
|
|
}
|
|
}
|
|
|
|
buffer0.resize(max(maxIndexCountInSubset, maxVertexCountInSubset));
|
|
buffer1.resize(maxIndexCountInSubset);
|
|
}
|
|
|
|
int newVertexCount = 0;
|
|
|
|
for (int i = 0; i < newMesh.GetSubSetCount(); i++)
|
|
{
|
|
const SMeshSubset& subset = mesh.m_subsets[i];
|
|
|
|
if (subset.nNumIndices == 0)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
int subsetMinIndex = mesh.m_pIndices[subset.nFirstIndexId];
|
|
int subsetMaxIndex = subsetMinIndex;
|
|
for (int j = 1; j < subset.nNumIndices; ++j)
|
|
{
|
|
const int idx = mesh.m_pIndices[subset.nFirstIndexId + j];
|
|
if (idx < subsetMinIndex)
|
|
{
|
|
subsetMinIndex = idx;
|
|
}
|
|
else if (idx > subsetMaxIndex)
|
|
{
|
|
subsetMaxIndex = idx;
|
|
}
|
|
}
|
|
|
|
for (int j = 0; j < subset.nNumIndices; ++j)
|
|
{
|
|
buffer0[j] = mesh.m_pIndices[subset.nFirstIndexId + j] - subsetMinIndex;
|
|
}
|
|
|
|
const bool bOk = ffr.reorderFaces(
|
|
cacheSize,
|
|
kVerticesPerFace,
|
|
subset.nNumIndices,
|
|
&buffer0[0], // inVertexIndices
|
|
&buffer1[0], // outVertexIndices
|
|
0); // faceToOldFace[] - we don't need it
|
|
|
|
if (!bOk)
|
|
{
|
|
return false;
|
|
}
|
|
|
|
// Reorder vertices
|
|
|
|
SMeshSubset& newSubset = newMesh.m_subsets[i];
|
|
newSubset.nFirstVertId = newVertexCount;
|
|
newSubset.nNumVerts = 0;
|
|
newSubset.nFirstIndexId = subset.nFirstIndexId;
|
|
newSubset.nNumIndices = subset.nNumIndices;
|
|
|
|
const int oldSubsetVertexCount = (int)subsetMaxIndex - (int)subsetMinIndex + 1;
|
|
|
|
assert(buffer0.size() >= (size_t)oldSubsetVertexCount);
|
|
memset(&buffer0[0], -1, sizeof(buffer0[0]) * oldSubsetVertexCount);
|
|
|
|
for (int j = 0; j < subset.nNumIndices; ++j)
|
|
{
|
|
const uint32 idx = buffer1[j];
|
|
const int oldVertexIndex = subsetMinIndex + idx;
|
|
if (buffer0[idx] == -1)
|
|
{
|
|
if (m_pVertexMap)
|
|
{
|
|
(*m_pVertexMap)[oldVertexIndex] = newVertexCount;
|
|
}
|
|
buffer0[idx] = newVertexCount;
|
|
//copy from old -> new vertex buffer
|
|
CopyMeshVertex(newMesh, newVertexCount, mesh, oldVertexIndex);
|
|
++newVertexCount;
|
|
++newSubset.nNumVerts;
|
|
}
|
|
newMesh.m_pIndices[subset.nFirstIndexId + j] = buffer0[idx];
|
|
}
|
|
}
|
|
|
|
newMesh.SetVertexCount(newVertexCount);
|
|
|
|
mesh.Copy(newMesh);
|
|
|
|
return true;
|
|
}
|
|
|
|
// Confetti Begin: Nicholas Baldwin
|
|
bool CMeshCompiler::StripifyMesh_PVRTriStripList(CMesh& mesh)
|
|
{
|
|
if (mesh.GetFaceCount() > 0)
|
|
{
|
|
// We don't support stripifying of meshes with explicit faces, we support meshes with index array only
|
|
return false;
|
|
}
|
|
|
|
enum
|
|
{
|
|
kCACHESIZE_GEFORCE3 = 24
|
|
};
|
|
const size_t cacheSize = kCACHESIZE_GEFORCE3;
|
|
enum
|
|
{
|
|
kVerticesPerFace = 3
|
|
};
|
|
|
|
// Prepare mapping buffers
|
|
if (m_pIndexMap)
|
|
{
|
|
const int n = mesh.GetIndexCount();
|
|
m_pIndexMap->resize(n);
|
|
for (int i = 0; i < n; ++i)
|
|
{
|
|
(*m_pIndexMap)[i] = mesh.m_pIndices[i];
|
|
}
|
|
}
|
|
if (m_pVertexMap)
|
|
{
|
|
const int n = mesh.GetVertexCount();
|
|
m_pVertexMap->resize(n, -1);
|
|
}
|
|
|
|
|
|
CMesh newMesh;
|
|
newMesh.Copy(mesh);
|
|
|
|
// TODO: make those variables members of CMeshCompiler so we don't need to allocate memory every time
|
|
std::vector<uint32> buffer0;
|
|
std::vector<uint32> buffer1;
|
|
|
|
// Reserve space
|
|
//
|
|
// We will use buffer0 for both subset's indices and for mapping from old vertex indices
|
|
// to new vertex indices (number of vertices decreases in case some vertices are not
|
|
// referenced from indices). In the latter case having size of buffer0 equal to number of
|
|
// indices is not enough if indices refer vertices in a spare fashion. Unfortunately,
|
|
// to compute range of referenced vertices we need to scan all indices in all subsets
|
|
// which is not fast.
|
|
{
|
|
int maxIndexCountInSubset = 0;
|
|
int maxVertexCountInSubset = 0;
|
|
|
|
for (int i = 0; i < newMesh.GetSubSetCount(); i++)
|
|
{
|
|
const SMeshSubset& subset = mesh.m_subsets[i];
|
|
|
|
if (subset.nNumIndices == 0)
|
|
{
|
|
continue;
|
|
}
|
|
if (subset.nNumIndices < 0)
|
|
{
|
|
assert(0);
|
|
return false;
|
|
}
|
|
if (subset.nNumIndices % kVerticesPerFace != 0)
|
|
{
|
|
assert(0);
|
|
return false;
|
|
}
|
|
if (subset.nFirstIndexId % kVerticesPerFace != 0)
|
|
{
|
|
assert(0);
|
|
return false;
|
|
}
|
|
|
|
if (maxIndexCountInSubset < subset.nNumIndices)
|
|
{
|
|
maxIndexCountInSubset = subset.nNumIndices;
|
|
}
|
|
|
|
int subsetMinIndex = mesh.m_pIndices[subset.nFirstIndexId];
|
|
int subsetMaxIndex = subsetMinIndex;
|
|
for (int j = 1; j < subset.nNumIndices; ++j)
|
|
{
|
|
const int idx = mesh.m_pIndices[subset.nFirstIndexId + j];
|
|
if (idx < subsetMinIndex)
|
|
{
|
|
subsetMinIndex = idx;
|
|
}
|
|
else if (idx > subsetMaxIndex)
|
|
{
|
|
subsetMaxIndex = idx;
|
|
}
|
|
}
|
|
|
|
if (maxVertexCountInSubset < subsetMaxIndex - subsetMinIndex + 1)
|
|
{
|
|
maxVertexCountInSubset = subsetMaxIndex - subsetMinIndex + 1;
|
|
}
|
|
}
|
|
|
|
buffer0.resize(max(maxIndexCountInSubset, maxVertexCountInSubset));
|
|
}
|
|
|
|
int newVertexCount = 0;
|
|
|
|
for (int i = 0; i < newMesh.GetSubSetCount(); i++)
|
|
{
|
|
const SMeshSubset& subset = mesh.m_subsets[i];
|
|
|
|
if (subset.nNumIndices == 0)
|
|
{
|
|
continue;
|
|
}
|
|
|
|
int subsetMinIndex = mesh.m_pIndices[subset.nFirstIndexId];
|
|
int subsetMaxIndex = subsetMinIndex;
|
|
for (int j = 1; j < subset.nNumIndices; ++j)
|
|
{
|
|
const int idx = mesh.m_pIndices[subset.nFirstIndexId + j];
|
|
if (idx < subsetMinIndex)
|
|
{
|
|
subsetMinIndex = idx;
|
|
}
|
|
else if (idx > subsetMaxIndex)
|
|
{
|
|
subsetMaxIndex = idx;
|
|
}
|
|
}
|
|
|
|
buffer1.clear();
|
|
buffer1.resize(subset.nNumIndices);
|
|
for (int j = 0; j < subset.nNumIndices; ++j)
|
|
{
|
|
buffer0[j] = mesh.m_pIndices[subset.nFirstIndexId + j] - subsetMinIndex;
|
|
buffer1[j] = mesh.m_pIndices[subset.nFirstIndexId + j] - subsetMinIndex;
|
|
}
|
|
|
|
PVRTTriStripList(&buffer1[0], buffer1.size() / kVerticesPerFace);
|
|
|
|
// Reorder vertices
|
|
|
|
SMeshSubset& newSubset = newMesh.m_subsets[i];
|
|
newSubset.nFirstVertId = newVertexCount;
|
|
newSubset.nNumVerts = 0;
|
|
newSubset.nFirstIndexId = subset.nFirstIndexId;
|
|
newSubset.nNumIndices = subset.nNumIndices;
|
|
|
|
const int oldSubsetVertexCount = (int)subsetMaxIndex - (int)subsetMinIndex + 1;
|
|
|
|
assert(buffer0.size() >= (size_t)oldSubsetVertexCount);
|
|
memset(&buffer0[0], -1, sizeof(buffer0[0]) * oldSubsetVertexCount);
|
|
|
|
for (int j = 0; j < subset.nNumIndices; ++j)
|
|
{
|
|
const uint32 idx = buffer1[j];
|
|
const int oldVertexIndex = subsetMinIndex + idx;
|
|
if (buffer0[idx] == -1)
|
|
{
|
|
if (m_pVertexMap)
|
|
{
|
|
(*m_pVertexMap)[oldVertexIndex] = newVertexCount;
|
|
}
|
|
buffer0[idx] = newVertexCount;
|
|
//copy from old -> new vertex buffer
|
|
CopyMeshVertex(newMesh, newVertexCount, mesh, oldVertexIndex);
|
|
++newVertexCount;
|
|
++newSubset.nNumVerts;
|
|
}
|
|
newMesh.m_pIndices[subset.nFirstIndexId + j] = buffer0[idx];
|
|
}
|
|
}
|
|
|
|
newMesh.SetVertexCount(newVertexCount);
|
|
|
|
mesh.Copy(newMesh);
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
//
|
|
// Input:
|
|
// mesh contains mesh.GetVertexCount() vertices (vertex data are stored in
|
|
// m_pPositions[] m_pNorms[] and in other data streams).
|
|
// Face and index streams are ignored.
|
|
// Output:
|
|
// 1) mesh contains unique vertices only.
|
|
// 2) data stream mesh.m_pIndices has "inputMesh.GetVertexCount()"
|
|
// indices (one output index per each input vertex).
|
|
// note that an output index points to an *unique* vertex in the
|
|
// output mesh.
|
|
// 3) data stream mesh.m_pFaces is empty.
|
|
//
|
|
// For example vertices [A, B, B, C, A, D] will be transformed to
|
|
// [A, B, C, D], and index array created will be [0, 1, 1, 2, 0, 3].
|
|
//
|
|
// Note that mesh.subsets[] is neither used nor changed.
|
|
//
|
|
bool CMeshCompiler::CreateIndicesAndDeleteDuplicateVertices(CMesh& mesh)
|
|
{
|
|
assert(mesh.m_pPositionsF16 == 0);
|
|
|
|
const int oldVertexCount = mesh.GetVertexCount();
|
|
if (oldVertexCount <= 0)
|
|
{
|
|
return true;
|
|
}
|
|
|
|
CMesh oldMesh;
|
|
oldMesh.Copy(mesh);
|
|
|
|
std::vector<int> vertexOldToNew;
|
|
std::vector<int> vertexNewToOld;
|
|
ComputeVertexRemapping(oldMesh, vertexOldToNew, vertexNewToOld);
|
|
|
|
const int newVertexCount = (int)vertexNewToOld.size();
|
|
|
|
assert(vertexOldToNew.size() == oldVertexCount);
|
|
const uint maxVertexCount = (sizeof(vtx_idx) == 2 ? 0xffff : 0x7fffffff);
|
|
if (newVertexCount > maxVertexCount)
|
|
{
|
|
m_LastError.Format("Too many vertices in mesh after compilation: %u (limit is %u).", (uint)newVertexCount, (uint)maxVertexCount);
|
|
return false;
|
|
}
|
|
|
|
for (int i = 0; i < newVertexCount; ++i)
|
|
{
|
|
CopyMeshVertex(mesh, i, oldMesh, vertexNewToOld[i]);
|
|
}
|
|
|
|
mesh.SetVertexCount(newVertexCount);
|
|
if (mesh.m_pNorms)
|
|
{
|
|
mesh.ReallocStream(CMesh::NORMALS, 0, newVertexCount);
|
|
}
|
|
if (mesh.m_pTexCoord)
|
|
{
|
|
mesh.ReallocStream(CMesh::TEXCOORDS, 0, newVertexCount);
|
|
}
|
|
if (mesh.GetStreamPtr<SMeshTexCoord>(CMesh::TEXCOORDS, 1))
|
|
{
|
|
mesh.ReallocStream(CMesh::TEXCOORDS, 1, newVertexCount);
|
|
}
|
|
if (mesh.m_pColor0)
|
|
{
|
|
mesh.ReallocStream(CMesh::COLORS, 0, newVertexCount);
|
|
}
|
|
if (mesh.m_pColor1)
|
|
{
|
|
mesh.ReallocStream(CMesh::COLORS, 1, newVertexCount);
|
|
}
|
|
if (mesh.m_pTangents)
|
|
{
|
|
mesh.ReallocStream(CMesh::TANGENTS, 0, newVertexCount);
|
|
}
|
|
//New since Touch Bending Gem. a Tocuh Bendable Mesh has bone mappings.
|
|
if (mesh.m_pBoneMapping)
|
|
{
|
|
mesh.ReallocStream(CMesh::BONEMAPPING, 0, newVertexCount);
|
|
}
|
|
mesh.ReallocStream(CMesh::TOPOLOGY_IDS, 0, 0);
|
|
mesh.ReallocStream(CMesh::VERT_MATS, 0, 0);
|
|
mesh.SetFaceCount(0);
|
|
mesh.SetIndexCount(oldVertexCount);
|
|
for (int i = 0; i < oldVertexCount; ++i)
|
|
{
|
|
mesh.m_pIndices[i] = vertexOldToNew[i];
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
bool CMeshCompiler::CheckForDegenerateFaces(const CMesh& mesh)
|
|
{
|
|
for (int i = 0; i < mesh.GetSubSetCount(); i++)
|
|
{
|
|
const SMeshSubset& subset = mesh.m_subsets[i];
|
|
for (int j = subset.nFirstIndexId; j < subset.nFirstIndexId + subset.nNumIndices; j += 3)
|
|
{
|
|
if (mesh.m_pIndices[j + 0] == mesh.m_pIndices[j + 1] ||
|
|
mesh.m_pIndices[j + 1] == mesh.m_pIndices[j + 2] ||
|
|
mesh.m_pIndices[j + 2] == mesh.m_pIndices[j + 0])
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
void CMeshCompiler::FindVertexRanges(CMesh& mesh)
|
|
{
|
|
assert(mesh.m_pPositionsF16 == 0);
|
|
|
|
const int nNumIndices = mesh.GetIndexCount();
|
|
|
|
// Find vertex range (both index and spacial ranges) for each material (needed for rendering)
|
|
for (int i = 0; i < mesh.GetSubSetCount(); i++)
|
|
{
|
|
SMeshSubset& subset = mesh.m_subsets[i];
|
|
|
|
if (subset.nNumIndices == 0)
|
|
{
|
|
subset.nNumVerts = 0;
|
|
continue;
|
|
}
|
|
|
|
if (subset.nNumIndices + subset.nFirstIndexId > nNumIndices)
|
|
{
|
|
assert(0);
|
|
continue;
|
|
}
|
|
|
|
int nMin = INT_MAX;
|
|
int nMax = INT_MIN;
|
|
Vec3 vMin = SetMaxBB();
|
|
Vec3 vMax = SetMinBB();
|
|
|
|
for (int j = subset.nFirstIndexId; j < subset.nNumIndices + subset.nFirstIndexId; j++)
|
|
{
|
|
int index = mesh.m_pIndices[j];
|
|
Vec3 v = mesh.m_pPositions[index];
|
|
vMin.CheckMin(v);
|
|
vMax.CheckMax(v);
|
|
nMin = min(nMin, index);
|
|
nMax = max(nMax, index);
|
|
}
|
|
subset.vCenter = (vMin + vMax) * 0.5f;
|
|
subset.fRadius = (vMin - subset.vCenter).GetLength();
|
|
subset.nFirstVertId = nMin;
|
|
subset.nNumVerts = nMax - nMin + 1;
|
|
}
|
|
}
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////////
|
|
bool CMeshCompiler::CompareMeshes(const CMesh& mesh1, const CMesh& mesh2)
|
|
{
|
|
if (mesh1.m_subsets.size() != mesh2.m_subsets.size())
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (mesh1.GetFaceCount() != mesh2.GetFaceCount())
|
|
{
|
|
return false;
|
|
}
|
|
if (mesh1.GetVertexCount() != mesh2.GetVertexCount())
|
|
{
|
|
return false;
|
|
}
|
|
if (mesh1.GetTexCoordCount() != mesh2.GetTexCoordCount())
|
|
{
|
|
return false;
|
|
}
|
|
if (mesh1.GetIndexCount() != mesh2.GetIndexCount())
|
|
{
|
|
return false;
|
|
}
|
|
|
|
if (!mesh1.CompareStreams(mesh2))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
return true;
|
|
}
|
|
} // namespace mesh_compiler
|