Source engine models often use custom normal data that can look "dark" or blocky in other software. You may need to clear "Custom Split Normals Data" in Blender's Object Data Properties to restore the "extra quality" smooth look. 3. Export to OBJ Once your model is cleaned up and looking right: Go to File > Export > Wavefront (.obj) .
Many standard converters "guess" vertex normals. Our process retains the explicit smoothing groups and surface normals defined in the VVD, preventing "faceted" looks or shading errors in your final render. vvd to obj extra quality
Low quality converters merge vertices that occupy the same space but have different UVs (common at texture seams). To prevent this: Source engine models often use custom normal data