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Some textures referenced by bundled IRR/IRRMesh models missing. Will be fixed by PR #5374

tellypresence

**Is your feature request related to a problem? Please describe.** Currently, `aiMesh::mNormals` is used to store normals for the mesh. In theory, it can hold face normals but I see...

vasil-pashov

**Describe the bug** STP importer is not working 

Vipul-M-Rawal

Bug: Binary ply - Line-ending char after the end_header line causes parsing issues

1

**Describe the bug** For a binary ply, if the first char after the "end_header\n" line is '\n' (hence empty line), this char (and line) will be skipped, causing the parser...

flogtk

Bug: aiBone weight num is non-zero but weight array is nullptr when define ASSIMP_BUILD_NO_ARMATUREPOPULATE_PROCESS

1

**Describe the bug** FbxConverter: When I define ASSIMP_BUILD_NO_ARMATUREPOPULATE_PROCESS to avoid generating extra data I don't need, I meet a bug that aiBone's weight array is nullptr to cause a crash....

T-rvw

Bug: Imported FBX have incorrect constant attenuation value of zero

1

**Describe the bug** When importing FBX lights with attenuation values, constant attenuation can be zero. this is a bug. Here is how attenuation values are implemented in FBXConverter.cpp ``` float...

mwestphal

Bug: Imported Collada spot light have an incorrect cone angle

1

**Describe the bug** A collada imported light has an incorect angle **To Reproduce** Parse this collada: [animatedLights.dae.zip](https://github.com/assimp/assimp/files/10710135/animatedLights.dae.zip) It contains only a single spot light with a : ``` 1 0...

mwestphal

Bug: Invalid Texture formats in converted glTF 2.0

2

**Describe the bug** Moved to own Issue from #2149 : The glTF™ 2.0 Specification only supports .jpg, and .png File Formats for textures. When converting Models with different texture formats...

DevSelchow

Bug: failed to Read Binary STL File

5

**Describe the bug** I read the attached STL file using : Assimp::Importer importer; const aiScene* scene = importer.ReadFile(iInputFile.string(), aiProcess_OptimizeGraph | aiProcess_Triangulate | aiProcess_JoinIdenticalVertices); But it did return any meshes on...

Nosenzor

I want to export glTF or glb to md5mesh and md5anim of DOOM3 for game modding. Thanks for your working.

glKarin