public static extern SU_RESULT SUTextureWriterLoadEntity(SUTextureWriterRef writer, SUEntityRef entity, ref long texture_id);
public static extern SU_RESULT SUTextureWriterLoadEntity(SUTextureWriterRef writer, SUFaceRef face, ref long front_texture_id, ref long back_texture_id);
public static extern SU_RESULT SUTextureWriterCreate(ref SUTextureWriterRef writer);
public static extern SU_RESULT SUTextureWriterRelease(ref SUTextureWriterRef writer);
public static extern SU_RESULT SUTextureWriterGetTextureIdForEntity(SUTextureWriterRef writer, SUEntityRef entity, ref size_t texture_id);
public static extern SU_RESULT SUTextureWriterGetTextureIdForFace(SUTextureWriterRef writer, SUFaceRef face, bool front, out long texture_id);
public static extern SU_RESULT SUTextureWriterGetTextureFilePath(SUTextureWriterRef writer, size_t texture_id, ref SUStringRef file_path);
public static extern SU_RESULT SUTextureWriterGetBackFaceUVCoords(SUTextureWriterRef writer, SUFaceRef face, size_t len, SUPoint3D[] points, SUPoint2D[] uv_coords);
public static extern SU_RESULT SUTextureWriterWriteAllTextures(SUTextureWriterRef writer, string directory);
public static extern SU_RESULT SUTextureWriterIsTextureAffine(SUTextureWriterRef writer, long texture_id, out bool is_affine);
public static extern SU_RESULT SUTextureWriterGetImageRep(SUTextureWriterRef writer, long texture_id, ref SUImageRepRef image);
public static extern SU_RESULT SUTextureWriterWriteTexture(SUTextureWriterRef writer, long texture_id, string path, bool reduce_size);
public static extern SU_RESULT SUTextureWriterGetNumTextures(SUTextureWriterRef writer, ref size_t count);
public static extern SU_RESULT SUFaceGetUVHelperWithTextureHandle(SUFaceRef face, bool front, bool back, SUTextureWriterRef texture_writer, long textureHandle, ref SUUVHelperRef uv_helper);
public static extern SU_RESULT SUMeshHelperCreateWithTextureWriter(ref SUMeshHelperRef mesh_ref, SUFaceRef face_ref, SUTextureWriterRef texture_writer_ref);
