Aras Pranckevicius
1b4f35f6a5
Adds support for vertex colors to OBJ I/O. Importer: - Supports both "xyzrgb" and "MRGB" vertex color formats. - Whenever vertex color is present in the file for a model, it is imported and a Color attribute is created (per-vertex, full float color data type). Color coming from the file is assumed to be sRGB, and is converted to linear upon import. Exporter: - Option to export the vertex colors. Defaults to "off", since not all 3rd party software supports vertex colors. - When the option is "on", if a mesh has a color attribute layer, the active one is exported in "xyzrgb" form. If the mesh has per-face-corner colors, they are averaged on the vertices. Colors are converted from linear to sRGB upon export. Reviewed By: Howard Trickey Differential Revision: https://developer.blender.org/D15159