SGM to OBJ converter for Rayne SGM files
Made by reversing the SGM Exporter from uberpixel/SGM-file-format
python sgm2obj.py [-h] input_file.sgm [output_file.obj] [--texture TEXTURE.TYPE]
If no output file is provided, it will use the input file name and replace the extension with .obj and .mtl If no texture is provided it will use the one in the sgm with a .* extension and will have to be changed manually. Only set the texture if there is only one texture, otherwise it will override all other textures too.
The Plugin for 2.8x and higher can be found in BlenderImport2_8x\io_import_sgm.py
I took the easy way out rather than importing the model myself, it converts to .obj/.mtl using the same functions and uses the built in .obj importer.
This means there will be .obj and .mtl files left in the same directory as the imported .smg model.
Images will be in accompanying astc files. the exporter will reference them in the obj but you will need to convert the astc manually.
To do this, download astcenc and run .\astcenc-avx2.exe -ds texture.astc texture.png.
- Animations Excluded
- Only reads first color
############################################################
#Structure of exported mesh files (.sgm)
############################################################
#magic number - uint32 - 352658064
#version - uint8 - 3
#number of materials - uint8
#material id - uint8
# number of uv sets - uint8
# number of textures - uint8
# texture type hint - uint8
# filename length - uint16
# filename - char*filename length
# number of colors - uint8
# color type hint - uint8
# color rgba - float32*4
#
#number of meshs - uint8
#mesh id - uint8
# used materials id - uint8
# number of vertices - uint32
# texcoord count - uint8
# color channel count - uint8 usually 0 or 4
# has tangents - uint8 0 if not, 1 otherwise
# has bones - uint8 0 if not, 1 otherwise
# interleaved vertex data - float32
# - position, normal, uvN, color, tangents, weights, bone indices
#
# number of indices - uint32
# index size - uint8, usually 2 or 4 bytes
# indices - index size
#
#has animation - uint8 0 if not, 1 otherwise
# animfilename length - uint16
# animfilename - char*animfilename length
- Slin for the SGM Exporter and pointing out the fix for having multiple meshes.
- EBSpark and person4268 for fixing UV mapping with images.