bb
157c6af18e
Avoid cases of filenames Update years in terms and other legal(ish) documents Don't update years in license headers, since change is not meaningful Will add linter rule in seperate commit Happy recompiling everyone! Original Patch By: Nescio Comment By: Gallaecio Differential Revision: D2620 This was SVN commit r27786.
145 lines
4.8 KiB
C++
145 lines
4.8 KiB
C++
/* Copyright (C) 2021 Wildfire Games.
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* This file is part of 0 A.D.
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*
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* 0 A.D. is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 2 of the License, or
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* (at your option) any later version.
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*
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* 0 A.D. is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with 0 A.D. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "precompiled.h"
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#include "renderer/MikktspaceWrap.h"
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MikkTSpace::MikkTSpace(const CModelDefPtr& m, std::vector<float>& v, bool gpuSkinning) : m_Model(m),
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m_NewVertices(v), m_GpuSkinning(gpuSkinning)
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{
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// ensure that m_NewVertices is empty
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m_NewVertices.clear();
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// set up SMikkTSpaceInterface struct
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m_Interface.m_getNumFaces = GetNumFaces;
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m_Interface.m_getNumVerticesOfFace = GetNumVerticesOfFace;
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m_Interface.m_getPosition = GetPosition;
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m_Interface.m_getNormal = GetNormal;
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m_Interface.m_getTexCoord = GetTexCoord;
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m_Interface.m_setTSpaceBasic = nullptr;
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m_Interface.m_setTSpace = SetTSpace;
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// set up SMikkTSpaceContext struct
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m_Context.m_pInterface = &m_Interface;
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m_Context.m_pUserData = static_cast<void*>(this);
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}
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void MikkTSpace::Generate()
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{
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genTangSpaceDefault(&m_Context);
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}
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int MikkTSpace::GetNumFaces(const SMikkTSpaceContext* pContext)
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{
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return GetUserDataFromContext(pContext)->m_Model->GetNumFaces();
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}
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int MikkTSpace::GetNumVerticesOfFace(const SMikkTSpaceContext* UNUSED(pContext), const int UNUSED(iFace))
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{
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return 3;
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}
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void MikkTSpace::GetPosition(const SMikkTSpaceContext* pContext,
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float* fvPosOut, const int iFace, const int iVert)
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{
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const CVector3D& position = GetVertex(pContext, iFace, iVert).m_Coords;
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fvPosOut[0] = position.X;
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fvPosOut[1] = position.Y;
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fvPosOut[2] = position.Z;
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}
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void MikkTSpace::GetNormal(const SMikkTSpaceContext* pContext,
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float* fvNormOut, const int iFace, const int iVert)
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{
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const CVector3D& normal = GetVertex(pContext, iFace, iVert).m_Norm;
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fvNormOut[0] = normal.X;
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fvNormOut[1] = normal.Y;
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fvNormOut[2] = normal.Z;
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}
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void MikkTSpace::GetTexCoord(const SMikkTSpaceContext* pContext,
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float* fvTexcOut, const int iFace, const int iVert)
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{
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const MikkTSpace* userData = GetUserDataFromContext(pContext);
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const SModelFace& face = userData->m_Model->GetFaces()[iFace];
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const size_t numberOfUVPerVertex = userData->m_Model->GetNumUVsPerVertex();
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// The tangents are calculated according to the 'default' UV set
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const CVector2D& uv = userData->m_Model->GetUVCoordinates()[face.m_Verts[iVert] * numberOfUVPerVertex];
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fvTexcOut[0] = uv.X;
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fvTexcOut[1] = 1.0 - uv.Y;
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}
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void MikkTSpace::SetTSpace(const SMikkTSpaceContext* pContext, const float* fvTangent,
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const float* UNUSED(fvBiTangent), const float UNUSED(fMagS), const float UNUSED(fMagT),
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const tbool bIsOrientationPreserving, const int iFace, const int iVert)
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{
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const MikkTSpace* userData = GetUserDataFromContext(pContext);
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const SModelFace& face = userData->m_Model->GetFaces()[iFace];
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const SModelVertex& vertex = userData->m_Model->GetVertices()[face.m_Verts[iVert]];
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const CVector3D& p = vertex.m_Coords;
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userData->m_NewVertices.push_back(p.X);
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userData->m_NewVertices.push_back(p.Y);
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userData->m_NewVertices.push_back(p.Z);
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const CVector3D& n = vertex.m_Norm;
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userData->m_NewVertices.push_back(n.X);
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userData->m_NewVertices.push_back(n.Y);
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userData->m_NewVertices.push_back(n.Z);
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userData->m_NewVertices.push_back(fvTangent[0]);
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userData->m_NewVertices.push_back(fvTangent[1]);
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userData->m_NewVertices.push_back(fvTangent[2]);
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userData->m_NewVertices.push_back(bIsOrientationPreserving != 0 ? 1.f : -1.f);
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if (userData->m_GpuSkinning)
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{
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for (u8 j = 0; j < 4; ++j)
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{
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userData->m_NewVertices.push_back(vertex.m_Blend.m_Bone[j]);
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userData->m_NewVertices.push_back(255.f * vertex.m_Blend.m_Weight[j]);
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}
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}
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const size_t numberOfUVPerVertex = userData->m_Model->GetNumUVsPerVertex();
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for (size_t UVset = 0; UVset < numberOfUVPerVertex; ++UVset)
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{
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const CVector2D& uv = userData->m_Model->GetUVCoordinates()[face.m_Verts[iVert] * numberOfUVPerVertex + UVset];
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userData->m_NewVertices.push_back(uv.X);
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userData->m_NewVertices.push_back(1.f - uv.Y);
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}
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}
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MikkTSpace* MikkTSpace::GetUserDataFromContext(const SMikkTSpaceContext* pContext)
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{
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return static_cast<MikkTSpace*>(pContext->m_pUserData);
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}
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SModelVertex MikkTSpace::GetVertex(const SMikkTSpaceContext* pContext, const int iFace, const int iVert)
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{
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const MikkTSpace* userData = GetUserDataFromContext(pContext);
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const SModelFace& f = userData->m_Model->GetFaces()[iFace];
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return userData->m_Model->GetVertices()[f.m_Verts[iVert]];
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}
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