From f91b439f79cc106f08678a265562191c67b184cf Mon Sep 17 00:00:00 2001 From: Tom spot Callaway Date: Mon, 3 May 2021 13:40:31 -0400 Subject: [PATCH] preserve UV Stream names in FBX files --- code/AssetLib/Assxml/AssxmlFileWriter.cpp | 7 +++++-- code/AssetLib/FBX/FBXConverter.cpp | 2 ++ include/assimp/mesh.h | 4 ++++ 3 files changed, 11 insertions(+), 2 deletions(-) diff --git a/code/AssetLib/Assxml/AssxmlFileWriter.cpp b/code/AssetLib/Assxml/AssxmlFileWriter.cpp index 6d876b3aa..24fda5955 100644 --- a/code/AssetLib/Assxml/AssxmlFileWriter.cpp +++ b/code/AssetLib/Assxml/AssxmlFileWriter.cpp @@ -598,8 +598,11 @@ static void WriteDump(const char *pFile, const char *cmd, const aiScene *scene, if (!mesh->mTextureCoords[a]) break; - ioprintf(io, "\t\t \n", mesh->mNumVertices, - a, mesh->mNumUVComponents[a]); + ioprintf(io, "\t\t \n", + mesh->mNumVertices, + a, + mesh->mTextureCoordsNames[a].C_Str(), + mesh->mNumUVComponents[a]); if (!shortened) { if (mesh->mNumUVComponents[a] == 3) { diff --git a/code/AssetLib/FBX/FBXConverter.cpp b/code/AssetLib/FBX/FBXConverter.cpp index cb033a651..4778f9b07 100644 --- a/code/AssetLib/FBX/FBXConverter.cpp +++ b/code/AssetLib/FBX/FBXConverter.cpp @@ -1126,6 +1126,8 @@ unsigned int FBXConverter::ConvertMeshSingleMaterial(const MeshGeometry &mesh, c *out_uv++ = aiVector3D(v.x, v.y, 0.0f); } + out_mesh->mTextureCoordsNames[i] = mesh.GetTextureCoordChannelName(i); + out_mesh->mNumUVComponents[i] = 2; } diff --git a/include/assimp/mesh.h b/include/assimp/mesh.h index 427dba008..989ed3800 100644 --- a/include/assimp/mesh.h +++ b/include/assimp/mesh.h @@ -674,6 +674,10 @@ struct aiMesh { */ C_STRUCT aiVector3D *mTextureCoords[AI_MAX_NUMBER_OF_TEXTURECOORDS]; + /** Vertex stream names. + */ + C_STRUCT aiString mTextureCoordsNames[AI_MAX_NUMBER_OF_TEXTURECOORDS]; + /** Specifies the number of components for a given UV channel. * Up to three channels are supported (UVW, for accessing volume * or cube maps). If the value is 2 for a given channel n, the