├── .gitignore ├── CHANGELOG.md ├── LICENSE ├── README.md ├── __init__.py ├── data_types.py ├── docs ├── blender.jpg └── unreal.jpg ├── export_datasmith.py └── testing ├── README.md ├── datasmith.prof ├── export_all.ps1 └── test_datasmith_export.py /.gitignore: -------------------------------------------------------------------------------- 1 | testing/** 2 | !testing/* 3 | *.pyc 4 | -------------------------------------------------------------------------------- /CHANGELOG.md: -------------------------------------------------------------------------------- 1 | # Changelog 2 | All notable changes to this project will be documented in this file. 3 | Features marked with `*` require the UE4 plugin to work. 4 | 5 | ## [Unreleased] 6 | ### Fixed 7 | * Export metadata is now a flag, off by default, to help in case other addons store info there. 8 | * Libraries with long file paths are now referenced by the blend file name only. 9 | 10 | ## [1.0.3] 2020-08-19 11 | ### Added 12 | + Texture node now supports box projection. 13 | + Smoothing groups are now written in geometry data. 14 | + TGA texture support. _Thanks KeyToon9_ 15 | 16 | ### Fixed 17 | * Vertex normals now export correctly (you may need to use the Triangulate modifier). _Thanks KeyToon9_ 18 | * Fixed image files names when first char is unvalid. _Thanks KeyToon9_ 19 | * Improved light attenuation radius calculation. 20 | * Animation is now correctly exported for non-root objects. 21 | 22 | ## [1.0.2] 2020-07-24 23 | ### Fixed 24 | * Fixed an issue when writing some custom props, that would break the XML structure. 25 | 26 | ## [1.0.0] 2020-07-01 27 | ### Added 28 | + Added support for object and meshes metadata (custom properties in Blender). 29 | + Added an option to prefer custom nodes to generate simpler graphs if you have the UE4 plugin.* 30 | + Added new material nodes: 31 | - Texture Coordinates (partial support)* 32 | - Noise Texture (simulated, not entirely accurate)* 33 | - UV Map* 34 | - Geometry (partial support)* 35 | - Attribute 36 | - Combine/Separate RGB/XYZ 37 | - Combine/Separate HSV* 38 | - Math (some new nodes like SINH, COSH, etc...)* 39 | - Vector Math 40 | - Vector Math (Round, Wrap, Project, Reflect)* 41 | - Mapping (can now do 3d rotations, uses simpler variants when there is no XY rotation)* 42 | - Checker Texture* 43 | 44 | + **This is a big one:** Object animations are now exported in a Level Sequence. 45 | 46 | 47 | ### Fixed 48 | * Fixed nodegroups with output node named different than "Group Output". 49 | * Names are now sanitized to be only alphanumeric. 50 | * Increased size for datasmith_curves image to allow for more baked curves (up to 1024) 51 | * All UV nodes are upcasted to Vector3 to better reflect Blender operations, and masked down to Vector2 when reading from them. 52 | * Improved images recollection flow. Unpacked files are directly copied and packed files are written from packed data instead of resaving them (this fixes some strange formats like RG8, which Blender can read and pack, but cannot save). 53 | * Improved behavior of **ColorRamp** and **RGBCurveLookup** nodes* 54 | * Improved behavior of RGB sockets connected to VALUE sockets 55 | * Math nodes with `Clamp` option are now wrapped with a `Saturate` operation. 56 | * Normal maps with strength different than 1 are now wrapped with a `FlattenNormal` operation. 57 | * Principled BSDF nodes now write the Specular values. 58 | * UV maps set as `Render Active` are now set at UV0 to be read as default UVs in UE4. \ 59 | * Improved handling of some meshes with empty materials or no material slots. 60 | * Tested on **Blender 2.83.1** 61 | 62 | 63 | ## [0.4.0] 2020-03-26 64 | ### Added 65 | + Added support for exporting curves as geometry 66 | + Added minimal export option, which skips textures for faster export 67 | + Added new material nodes: 68 | - Blackbody 69 | - Bright/Contrast* 70 | - Object Info 71 | - Gamma (Power) 72 | 73 | ### Fixed 74 | * Improved materials rgb_curves node support 75 | * Improved logging output 76 | * We now support **Blender 2.82** 77 | 78 | ## [0.3.0] 2020-03-09 79 | 80 | ### Added 81 | + Added support for multiple uv maps (datasmith supports up to 8) 82 | + Added support for sphere reflection probes 83 | + Added support for box reflection probes 84 | + Added support for planar reflection probes 85 | 86 | ### Fixed 87 | * Fixed export of material nodetrees inside nodetrees 88 | * Improved export speed of material curves 89 | * Fixed normal map flags for ue4.25 90 | * Fixed profiling flag as export option 91 | * Fixed export for multiple scenes, these scenes export, although some are not 92 | tested in UE4 yet, tested scenes include: 93 | + archiviz 94 | + blender_splash_fishy_cat 95 | + classroom 96 | + forest 97 | + mr_elephant 98 | + pabellon_barcelona 99 | + pokedstudio 100 | + race_spaceship 101 | + temple 102 | + the_junk_shop 103 | + tree_creature 104 | + wanderer 105 | + wasp_bot 106 | 107 | ## [0.2.0] 108 | 109 | This was the first release, changelog wasn't used before this. 110 | -------------------------------------------------------------------------------- /LICENSE: -------------------------------------------------------------------------------- 1 | GNU GENERAL PUBLIC LICENSE 2 | Version 3, 29 June 2007 3 | 4 | Copyright (C) 2007 Free Software Foundation, Inc. 5 | Everyone is permitted to copy and distribute verbatim copies 6 | of this license document, but changing it is not allowed. 7 | 8 | Preamble 9 | 10 | The GNU General Public License is a free, copyleft license for 11 | software and other kinds of works. 12 | 13 | The licenses for most software and other practical works are designed 14 | to take away your freedom to share and change the works. By contrast, 15 | the GNU General Public License is intended to guarantee your freedom to 16 | share and change all versions of a program--to make sure it remains free 17 | software for all its users. We, the Free Software Foundation, use the 18 | GNU General Public License for most of our software; it applies also to 19 | any other work released this way by its authors. You can apply it to 20 | your programs, too. 21 | 22 | When we speak of free software, we are referring to freedom, not 23 | price. Our General Public Licenses are designed to make sure that you 24 | have the freedom to distribute copies of free software (and charge for 25 | them if you wish), that you receive source code or can get it if you 26 | want it, that you can change the software or use pieces of it in new 27 | free programs, and that you know you can do these things. 28 | 29 | To protect your rights, we need to prevent others from denying you 30 | these rights or asking you to surrender the rights. Therefore, you have 31 | certain responsibilities if you distribute copies of the software, or if 32 | you modify it: responsibilities to respect the freedom of others. 33 | 34 | For example, if you distribute copies of such a program, whether 35 | gratis or for a fee, you must pass on to the recipients the same 36 | freedoms that you received. You must make sure that they, too, receive 37 | or can get the source code. And you must show them these terms so they 38 | know their rights. 39 | 40 | Developers that use the GNU GPL protect your rights with two steps: 41 | (1) assert copyright on the software, and (2) offer you this License 42 | giving you legal permission to copy, distribute and/or modify it. 43 | 44 | For the developers' and authors' protection, the GPL clearly explains 45 | that there is no warranty for this free software. For both users' and 46 | authors' sake, the GPL requires that modified versions be marked as 47 | changed, so that their problems will not be attributed erroneously to 48 | authors of previous versions. 49 | 50 | Some devices are designed to deny users access to install or run 51 | modified versions of the software inside them, although the manufacturer 52 | can do so. This is fundamentally incompatible with the aim of 53 | protecting users' freedom to change the software. The systematic 54 | pattern of such abuse occurs in the area of products for individuals to 55 | use, which is precisely where it is most unacceptable. Therefore, we 56 | have designed this version of the GPL to prohibit the practice for those 57 | products. If such problems arise substantially in other domains, we 58 | stand ready to extend this provision to those domains in future versions 59 | of the GPL, as needed to protect the freedom of users. 60 | 61 | Finally, every program is threatened constantly by software patents. 62 | States should not allow patents to restrict development and use of 63 | software on general-purpose computers, but in those that do, we wish to 64 | avoid the special danger that patents applied to a free program could 65 | make it effectively proprietary. To prevent this, the GPL assures that 66 | patents cannot be used to render the program non-free. 67 | 68 | The precise terms and conditions for copying, distribution and 69 | modification follow. 70 | 71 | TERMS AND CONDITIONS 72 | 73 | 0. Definitions. 74 | 75 | "This License" refers to version 3 of the GNU General Public License. 76 | 77 | "Copyright" also means copyright-like laws that apply to other kinds of 78 | works, such as semiconductor masks. 79 | 80 | "The Program" refers to any copyrightable work licensed under this 81 | License. Each licensee is addressed as "you". "Licensees" and 82 | "recipients" may be individuals or organizations. 83 | 84 | To "modify" a work means to copy from or adapt all or part of the work 85 | in a fashion requiring copyright permission, other than the making of an 86 | exact copy. The resulting work is called a "modified version" of the 87 | earlier work or a work "based on" the earlier work. 88 | 89 | A "covered work" means either the unmodified Program or a work based 90 | on the Program. 91 | 92 | To "propagate" a work means to do anything with it that, without 93 | permission, would make you directly or secondarily liable for 94 | infringement under applicable copyright law, except executing it on a 95 | computer or modifying a private copy. Propagation includes copying, 96 | distribution (with or without modification), making available to the 97 | public, and in some countries other activities as well. 98 | 99 | To "convey" a work means any kind of propagation that enables other 100 | parties to make or receive copies. Mere interaction with a user through 101 | a computer network, with no transfer of a copy, is not conveying. 102 | 103 | An interactive user interface displays "Appropriate Legal Notices" 104 | to the extent that it includes a convenient and prominently visible 105 | feature that (1) displays an appropriate copyright notice, and (2) 106 | tells the user that there is no warranty for the work (except to the 107 | extent that warranties are provided), that licensees may convey the 108 | work under this License, and how to view a copy of this License. If 109 | the interface presents a list of user commands or options, such as a 110 | menu, a prominent item in the list meets this criterion. 111 | 112 | 1. Source Code. 113 | 114 | The "source code" for a work means the preferred form of the work 115 | for making modifications to it. "Object code" means any non-source 116 | form of a work. 117 | 118 | A "Standard Interface" means an interface that either is an official 119 | standard defined by a recognized standards body, or, in the case of 120 | interfaces specified for a particular programming language, one that 121 | is widely used among developers working in that language. 122 | 123 | The "System Libraries" of an executable work include anything, other 124 | than the work as a whole, that (a) is included in the normal form of 125 | packaging a Major Component, but which is not part of that Major 126 | Component, and (b) serves only to enable use of the work with that 127 | Major Component, or to implement a Standard Interface for which an 128 | implementation is available to the public in source code form. A 129 | "Major Component", in this context, means a major essential component 130 | (kernel, window system, and so on) of the specific operating system 131 | (if any) on which the executable work runs, or a compiler used to 132 | produce the work, or an object code interpreter used to run it. 133 | 134 | The "Corresponding Source" for a work in object code form means all 135 | the source code needed to generate, install, and (for an executable 136 | work) run the object code and to modify the work, including scripts to 137 | control those activities. However, it does not include the work's 138 | System Libraries, or general-purpose tools or generally available free 139 | programs which are used unmodified in performing those activities but 140 | which are not part of the work. For example, Corresponding Source 141 | includes interface definition files associated with source files for 142 | the work, and the source code for shared libraries and dynamically 143 | linked subprograms that the work is specifically designed to require, 144 | such as by intimate data communication or control flow between those 145 | subprograms and other parts of the work. 146 | 147 | The Corresponding Source need not include anything that users 148 | can regenerate automatically from other parts of the Corresponding 149 | Source. 150 | 151 | The Corresponding Source for a work in source code form is that 152 | same work. 153 | 154 | 2. Basic Permissions. 155 | 156 | All rights granted under this License are granted for the term of 157 | copyright on the Program, and are irrevocable provided the stated 158 | conditions are met. This License explicitly affirms your unlimited 159 | permission to run the unmodified Program. The output from running a 160 | covered work is covered by this License only if the output, given its 161 | content, constitutes a covered work. This License acknowledges your 162 | rights of fair use or other equivalent, as provided by copyright law. 163 | 164 | You may make, run and propagate covered works that you do not 165 | convey, without conditions so long as your license otherwise remains 166 | in force. You may convey covered works to others for the sole purpose 167 | of having them make modifications exclusively for you, or provide you 168 | with facilities for running those works, provided that you comply with 169 | the terms of this License in conveying all material for which you do 170 | not control copyright. Those thus making or running the covered works 171 | for you must do so exclusively on your behalf, under your direction 172 | and control, on terms that prohibit them from making any copies of 173 | your copyrighted material outside their relationship with you. 174 | 175 | Conveying under any other circumstances is permitted solely under 176 | the conditions stated below. Sublicensing is not allowed; section 10 177 | makes it unnecessary. 178 | 179 | 3. Protecting Users' Legal Rights From Anti-Circumvention Law. 180 | 181 | No covered work shall be deemed part of an effective technological 182 | measure under any applicable law fulfilling obligations under article 183 | 11 of the WIPO copyright treaty adopted on 20 December 1996, or 184 | similar laws prohibiting or restricting circumvention of such 185 | measures. 186 | 187 | When you convey a covered work, you waive any legal power to forbid 188 | circumvention of technological measures to the extent such circumvention 189 | is effected by exercising rights under this License with respect to 190 | the covered work, and you disclaim any intention to limit operation or 191 | modification of the work as a means of enforcing, against the work's 192 | users, your or third parties' legal rights to forbid circumvention of 193 | technological measures. 194 | 195 | 4. Conveying Verbatim Copies. 196 | 197 | You may convey verbatim copies of the Program's source code as you 198 | receive it, in any medium, provided that you conspicuously and 199 | appropriately publish on each copy an appropriate copyright notice; 200 | keep intact all notices stating that this License and any 201 | non-permissive terms added in accord with section 7 apply to the code; 202 | keep intact all notices of the absence of any warranty; and give all 203 | recipients a copy of this License along with the Program. 204 | 205 | You may charge any price or no price for each copy that you convey, 206 | and you may offer support or warranty protection for a fee. 207 | 208 | 5. Conveying Modified Source Versions. 209 | 210 | You may convey a work based on the Program, or the modifications to 211 | produce it from the Program, in the form of source code under the 212 | terms of section 4, provided that you also meet all of these conditions: 213 | 214 | a) The work must carry prominent notices stating that you modified 215 | it, and giving a relevant date. 216 | 217 | b) The work must carry prominent notices stating that it is 218 | released under this License and any conditions added under section 219 | 7. This requirement modifies the requirement in section 4 to 220 | "keep intact all notices". 221 | 222 | c) You must license the entire work, as a whole, under this 223 | License to anyone who comes into possession of a copy. This 224 | License will therefore apply, along with any applicable section 7 225 | additional terms, to the whole of the work, and all its parts, 226 | regardless of how they are packaged. This License gives no 227 | permission to license the work in any other way, but it does not 228 | invalidate such permission if you have separately received it. 229 | 230 | d) If the work has interactive user interfaces, each must display 231 | Appropriate Legal Notices; however, if the Program has interactive 232 | interfaces that do not display Appropriate Legal Notices, your 233 | work need not make them do so. 234 | 235 | A compilation of a covered work with other separate and independent 236 | works, which are not by their nature extensions of the covered work, 237 | and which are not combined with it such as to form a larger program, 238 | in or on a volume of a storage or distribution medium, is called an 239 | "aggregate" if the compilation and its resulting copyright are not 240 | used to limit the access or legal rights of the compilation's users 241 | beyond what the individual works permit. Inclusion of a covered work 242 | in an aggregate does not cause this License to apply to the other 243 | parts of the aggregate. 244 | 245 | 6. Conveying Non-Source Forms. 246 | 247 | You may convey a covered work in object code form under the terms 248 | of sections 4 and 5, provided that you also convey the 249 | machine-readable Corresponding Source under the terms of this License, 250 | in one of these ways: 251 | 252 | a) Convey the object code in, or embodied in, a physical product 253 | (including a physical distribution medium), accompanied by the 254 | Corresponding Source fixed on a durable physical medium 255 | customarily used for software interchange. 256 | 257 | b) Convey the object code in, or embodied in, a physical product 258 | (including a physical distribution medium), accompanied by a 259 | written offer, valid for at least three years and valid for as 260 | long as you offer spare parts or customer support for that product 261 | model, to give anyone who possesses the object code either (1) a 262 | copy of the Corresponding Source for all the software in the 263 | product that is covered by this License, on a durable physical 264 | medium customarily used for software interchange, for a price no 265 | more than your reasonable cost of physically performing this 266 | conveying of source, or (2) access to copy the 267 | Corresponding Source from a network server at no charge. 268 | 269 | c) Convey individual copies of the object code with a copy of the 270 | written offer to provide the Corresponding Source. This 271 | alternative is allowed only occasionally and noncommercially, and 272 | only if you received the object code with such an offer, in accord 273 | with subsection 6b. 274 | 275 | d) Convey the object code by offering access from a designated 276 | place (gratis or for a charge), and offer equivalent access to the 277 | Corresponding Source in the same way through the same place at no 278 | further charge. You need not require recipients to copy the 279 | Corresponding Source along with the object code. If the place to 280 | copy the object code is a network server, the Corresponding Source 281 | may be on a different server (operated by you or a third party) 282 | that supports equivalent copying facilities, provided you maintain 283 | clear directions next to the object code saying where to find the 284 | Corresponding Source. Regardless of what server hosts the 285 | Corresponding Source, you remain obligated to ensure that it is 286 | available for as long as needed to satisfy these requirements. 287 | 288 | e) Convey the object code using peer-to-peer transmission, provided 289 | you inform other peers where the object code and Corresponding 290 | Source of the work are being offered to the general public at no 291 | charge under subsection 6d. 292 | 293 | A separable portion of the object code, whose source code is excluded 294 | from the Corresponding Source as a System Library, need not be 295 | included in conveying the object code work. 296 | 297 | A "User Product" is either (1) a "consumer product", which means any 298 | tangible personal property which is normally used for personal, family, 299 | or household purposes, or (2) anything designed or sold for incorporation 300 | into a dwelling. In determining whether a product is a consumer product, 301 | doubtful cases shall be resolved in favor of coverage. For a particular 302 | product received by a particular user, "normally used" refers to a 303 | typical or common use of that class of product, regardless of the status 304 | of the particular user or of the way in which the particular user 305 | actually uses, or expects or is expected to use, the product. A product 306 | is a consumer product regardless of whether the product has substantial 307 | commercial, industrial or non-consumer uses, unless such uses represent 308 | the only significant mode of use of the product. 309 | 310 | "Installation Information" for a User Product means any methods, 311 | procedures, authorization keys, or other information required to install 312 | and execute modified versions of a covered work in that User Product from 313 | a modified version of its Corresponding Source. The information must 314 | suffice to ensure that the continued functioning of the modified object 315 | code is in no case prevented or interfered with solely because 316 | modification has been made. 317 | 318 | If you convey an object code work under this section in, or with, or 319 | specifically for use in, a User Product, and the conveying occurs as 320 | part of a transaction in which the right of possession and use of the 321 | User Product is transferred to the recipient in perpetuity or for a 322 | fixed term (regardless of how the transaction is characterized), the 323 | Corresponding Source conveyed under this section must be accompanied 324 | by the Installation Information. But this requirement does not apply 325 | if neither you nor any third party retains the ability to install 326 | modified object code on the User Product (for example, the work has 327 | been installed in ROM). 328 | 329 | The requirement to provide Installation Information does not include a 330 | requirement to continue to provide support service, warranty, or updates 331 | for a work that has been modified or installed by the recipient, or for 332 | the User Product in which it has been modified or installed. Access to a 333 | network may be denied when the modification itself materially and 334 | adversely affects the operation of the network or violates the rules and 335 | protocols for communication across the network. 336 | 337 | Corresponding Source conveyed, and Installation Information provided, 338 | in accord with this section must be in a format that is publicly 339 | documented (and with an implementation available to the public in 340 | source code form), and must require no special password or key for 341 | unpacking, reading or copying. 342 | 343 | 7. Additional Terms. 344 | 345 | "Additional permissions" are terms that supplement the terms of this 346 | License by making exceptions from one or more of its conditions. 347 | Additional permissions that are applicable to the entire Program shall 348 | be treated as though they were included in this License, to the extent 349 | that they are valid under applicable law. If additional permissions 350 | apply only to part of the Program, that part may be used separately 351 | under those permissions, but the entire Program remains governed by 352 | this License without regard to the additional permissions. 353 | 354 | When you convey a copy of a covered work, you may at your option 355 | remove any additional permissions from that copy, or from any part of 356 | it. (Additional permissions may be written to require their own 357 | removal in certain cases when you modify the work.) You may place 358 | additional permissions on material, added by you to a covered work, 359 | for which you have or can give appropriate copyright permission. 360 | 361 | Notwithstanding any other provision of this License, for material you 362 | add to a covered work, you may (if authorized by the copyright holders of 363 | that material) supplement the terms of this License with terms: 364 | 365 | a) Disclaiming warranty or limiting liability differently from the 366 | terms of sections 15 and 16 of this License; or 367 | 368 | b) Requiring preservation of specified reasonable legal notices or 369 | author attributions in that material or in the Appropriate Legal 370 | Notices displayed by works containing it; or 371 | 372 | c) Prohibiting misrepresentation of the origin of that material, or 373 | requiring that modified versions of such material be marked in 374 | reasonable ways as different from the original version; or 375 | 376 | d) Limiting the use for publicity purposes of names of licensors or 377 | authors of the material; or 378 | 379 | e) Declining to grant rights under trademark law for use of some 380 | trade names, trademarks, or service marks; or 381 | 382 | f) Requiring indemnification of licensors and authors of that 383 | material by anyone who conveys the material (or modified versions of 384 | it) with contractual assumptions of liability to the recipient, for 385 | any liability that these contractual assumptions directly impose on 386 | those licensors and authors. 387 | 388 | All other non-permissive additional terms are considered "further 389 | restrictions" within the meaning of section 10. If the Program as you 390 | received it, or any part of it, contains a notice stating that it is 391 | governed by this License along with a term that is a further 392 | restriction, you may remove that term. If a license document contains 393 | a further restriction but permits relicensing or conveying under this 394 | License, you may add to a covered work material governed by the terms 395 | of that license document, provided that the further restriction does 396 | not survive such relicensing or conveying. 397 | 398 | If you add terms to a covered work in accord with this section, you 399 | must place, in the relevant source files, a statement of the 400 | additional terms that apply to those files, or a notice indicating 401 | where to find the applicable terms. 402 | 403 | Additional terms, permissive or non-permissive, may be stated in the 404 | form of a separately written license, or stated as exceptions; 405 | the above requirements apply either way. 406 | 407 | 8. Termination. 408 | 409 | You may not propagate or modify a covered work except as expressly 410 | provided under this License. Any attempt otherwise to propagate or 411 | modify it is void, and will automatically terminate your rights under 412 | this License (including any patent licenses granted under the third 413 | paragraph of section 11). 414 | 415 | However, if you cease all violation of this License, then your 416 | license from a particular copyright holder is reinstated (a) 417 | provisionally, unless and until the copyright holder explicitly and 418 | finally terminates your license, and (b) permanently, if the copyright 419 | holder fails to notify you of the violation by some reasonable means 420 | prior to 60 days after the cessation. 421 | 422 | Moreover, your license from a particular copyright holder is 423 | reinstated permanently if the copyright holder notifies you of the 424 | violation by some reasonable means, this is the first time you have 425 | received notice of violation of this License (for any work) from that 426 | copyright holder, and you cure the violation prior to 30 days after 427 | your receipt of the notice. 428 | 429 | Termination of your rights under this section does not terminate the 430 | licenses of parties who have received copies or rights from you under 431 | this License. If your rights have been terminated and not permanently 432 | reinstated, you do not qualify to receive new licenses for the same 433 | material under section 10. 434 | 435 | 9. Acceptance Not Required for Having Copies. 436 | 437 | You are not required to accept this License in order to receive or 438 | run a copy of the Program. Ancillary propagation of a covered work 439 | occurring solely as a consequence of using peer-to-peer transmission 440 | to receive a copy likewise does not require acceptance. However, 441 | nothing other than this License grants you permission to propagate or 442 | modify any covered work. These actions infringe copyright if you do 443 | not accept this License. Therefore, by modifying or propagating a 444 | covered work, you indicate your acceptance of this License to do so. 445 | 446 | 10. Automatic Licensing of Downstream Recipients. 447 | 448 | Each time you convey a covered work, the recipient automatically 449 | receives a license from the original licensors, to run, modify and 450 | propagate that work, subject to this License. You are not responsible 451 | for enforcing compliance by third parties with this License. 452 | 453 | An "entity transaction" is a transaction transferring control of an 454 | organization, or substantially all assets of one, or subdividing an 455 | organization, or merging organizations. If propagation of a covered 456 | work results from an entity transaction, each party to that 457 | transaction who receives a copy of the work also receives whatever 458 | licenses to the work the party's predecessor in interest had or could 459 | give under the previous paragraph, plus a right to possession of the 460 | Corresponding Source of the work from the predecessor in interest, if 461 | the predecessor has it or can get it with reasonable efforts. 462 | 463 | You may not impose any further restrictions on the exercise of the 464 | rights granted or affirmed under this License. For example, you may 465 | not impose a license fee, royalty, or other charge for exercise of 466 | rights granted under this License, and you may not initiate litigation 467 | (including a cross-claim or counterclaim in a lawsuit) alleging that 468 | any patent claim is infringed by making, using, selling, offering for 469 | sale, or importing the Program or any portion of it. 470 | 471 | 11. Patents. 472 | 473 | A "contributor" is a copyright holder who authorizes use under this 474 | License of the Program or a work on which the Program is based. The 475 | work thus licensed is called the contributor's "contributor version". 476 | 477 | A contributor's "essential patent claims" are all patent claims 478 | owned or controlled by the contributor, whether already acquired or 479 | hereafter acquired, that would be infringed by some manner, permitted 480 | by this License, of making, using, or selling its contributor version, 481 | but do not include claims that would be infringed only as a 482 | consequence of further modification of the contributor version. For 483 | purposes of this definition, "control" includes the right to grant 484 | patent sublicenses in a manner consistent with the requirements of 485 | this License. 486 | 487 | Each contributor grants you a non-exclusive, worldwide, royalty-free 488 | patent license under the contributor's essential patent claims, to 489 | make, use, sell, offer for sale, import and otherwise run, modify and 490 | propagate the contents of its contributor version. 491 | 492 | In the following three paragraphs, a "patent license" is any express 493 | agreement or commitment, however denominated, not to enforce a patent 494 | (such as an express permission to practice a patent or covenant not to 495 | sue for patent infringement). To "grant" such a patent license to a 496 | party means to make such an agreement or commitment not to enforce a 497 | patent against the party. 498 | 499 | If you convey a covered work, knowingly relying on a patent license, 500 | and the Corresponding Source of the work is not available for anyone 501 | to copy, free of charge and under the terms of this License, through a 502 | publicly available network server or other readily accessible means, 503 | then you must either (1) cause the Corresponding Source to be so 504 | available, or (2) arrange to deprive yourself of the benefit of the 505 | patent license for this particular work, or (3) arrange, in a manner 506 | consistent with the requirements of this License, to extend the patent 507 | license to downstream recipients. "Knowingly relying" means you have 508 | actual knowledge that, but for the patent license, your conveying the 509 | covered work in a country, or your recipient's use of the covered work 510 | in a country, would infringe one or more identifiable patents in that 511 | country that you have reason to believe are valid. 512 | 513 | If, pursuant to or in connection with a single transaction or 514 | arrangement, you convey, or propagate by procuring conveyance of, a 515 | covered work, and grant a patent license to some of the parties 516 | receiving the covered work authorizing them to use, propagate, modify 517 | or convey a specific copy of the covered work, then the patent license 518 | you grant is automatically extended to all recipients of the covered 519 | work and works based on it. 520 | 521 | A patent license is "discriminatory" if it does not include within 522 | the scope of its coverage, prohibits the exercise of, or is 523 | conditioned on the non-exercise of one or more of the rights that are 524 | specifically granted under this License. You may not convey a covered 525 | work if you are a party to an arrangement with a third party that is 526 | in the business of distributing software, under which you make payment 527 | to the third party based on the extent of your activity of conveying 528 | the work, and under which the third party grants, to any of the 529 | parties who would receive the covered work from you, a discriminatory 530 | patent license (a) in connection with copies of the covered work 531 | conveyed by you (or copies made from those copies), or (b) primarily 532 | for and in connection with specific products or compilations that 533 | contain the covered work, unless you entered into that arrangement, 534 | or that patent license was granted, prior to 28 March 2007. 535 | 536 | Nothing in this License shall be construed as excluding or limiting 537 | any implied license or other defenses to infringement that may 538 | otherwise be available to you under applicable patent law. 539 | 540 | 12. No Surrender of Others' Freedom. 541 | 542 | If conditions are imposed on you (whether by court order, agreement or 543 | otherwise) that contradict the conditions of this License, they do not 544 | excuse you from the conditions of this License. If you cannot convey a 545 | covered work so as to satisfy simultaneously your obligations under this 546 | License and any other pertinent obligations, then as a consequence you may 547 | not convey it at all. For example, if you agree to terms that obligate you 548 | to collect a royalty for further conveying from those to whom you convey 549 | the Program, the only way you could satisfy both those terms and this 550 | License would be to refrain entirely from conveying the Program. 551 | 552 | 13. Use with the GNU Affero General Public License. 553 | 554 | Notwithstanding any other provision of this License, you have 555 | permission to link or combine any covered work with a work licensed 556 | under version 3 of the GNU Affero General Public License into a single 557 | combined work, and to convey the resulting work. The terms of this 558 | License will continue to apply to the part which is the covered work, 559 | but the special requirements of the GNU Affero General Public License, 560 | section 13, concerning interaction through a network will apply to the 561 | combination as such. 562 | 563 | 14. Revised Versions of this License. 564 | 565 | The Free Software Foundation may publish revised and/or new versions of 566 | the GNU General Public License from time to time. Such new versions will 567 | be similar in spirit to the present version, but may differ in detail to 568 | address new problems or concerns. 569 | 570 | Each version is given a distinguishing version number. If the 571 | Program specifies that a certain numbered version of the GNU General 572 | Public License "or any later version" applies to it, you have the 573 | option of following the terms and conditions either of that numbered 574 | version or of any later version published by the Free Software 575 | Foundation. If the Program does not specify a version number of the 576 | GNU General Public License, you may choose any version ever published 577 | by the Free Software Foundation. 578 | 579 | If the Program specifies that a proxy can decide which future 580 | versions of the GNU General Public License can be used, that proxy's 581 | public statement of acceptance of a version permanently authorizes you 582 | to choose that version for the Program. 583 | 584 | Later license versions may give you additional or different 585 | permissions. However, no additional obligations are imposed on any 586 | author or copyright holder as a result of your choosing to follow a 587 | later version. 588 | 589 | 15. Disclaimer of Warranty. 590 | 591 | THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY 592 | APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT 593 | HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY 594 | OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO, 595 | THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 596 | PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM 597 | IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF 598 | ALL NECESSARY SERVICING, REPAIR OR CORRECTION. 599 | 600 | 16. Limitation of Liability. 601 | 602 | IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING 603 | WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS 604 | THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY 605 | GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE 606 | USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF 607 | DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD 608 | PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS), 609 | EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF 610 | SUCH DAMAGES. 611 | 612 | 17. Interpretation of Sections 15 and 16. 613 | 614 | If the disclaimer of warranty and limitation of liability provided 615 | above cannot be given local legal effect according to their terms, 616 | reviewing courts shall apply local law that most closely approximates 617 | an absolute waiver of all civil liability in connection with the 618 | Program, unless a warranty or assumption of liability accompanies a 619 | copy of the Program in return for a fee. 620 | 621 | END OF TERMS AND CONDITIONS 622 | 623 | How to Apply These Terms to Your New Programs 624 | 625 | If you develop a new program, and you want it to be of the greatest 626 | possible use to the public, the best way to achieve this is to make it 627 | free software which everyone can redistribute and change under these terms. 628 | 629 | To do so, attach the following notices to the program. It is safest 630 | to attach them to the start of each source file to most effectively 631 | state the exclusion of warranty; and each file should have at least 632 | the "copyright" line and a pointer to where the full notice is found. 633 | 634 | 635 | Copyright (C) 636 | 637 | This program is free software: you can redistribute it and/or modify 638 | it under the terms of the GNU General Public License as published by 639 | the Free Software Foundation, either version 3 of the License, or 640 | (at your option) any later version. 641 | 642 | This program is distributed in the hope that it will be useful, 643 | but WITHOUT ANY WARRANTY; without even the implied warranty of 644 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 645 | GNU General Public License for more details. 646 | 647 | You should have received a copy of the GNU General Public License 648 | along with this program. If not, see . 649 | 650 | Also add information on how to contact you by electronic and paper mail. 651 | 652 | If the program does terminal interaction, make it output a short 653 | notice like this when it starts in an interactive mode: 654 | 655 | Copyright (C) 656 | This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'. 657 | This is free software, and you are welcome to redistribute it 658 | under certain conditions; type `show c' for details. 659 | 660 | The hypothetical commands `show w' and `show c' should show the appropriate 661 | parts of the General Public License. Of course, your program's commands 662 | might be different; for a GUI interface, you would use an "about box". 663 | 664 | You should also get your employer (if you work as a programmer) or school, 665 | if any, to sign a "copyright disclaimer" for the program, if necessary. 666 | For more information on this, and how to apply and follow the GNU GPL, see 667 | . 668 | 669 | The GNU General Public License does not permit incorporating your program 670 | into proprietary programs. If your program is a subroutine library, you 671 | may consider it more useful to permit linking proprietary applications with 672 | the library. If this is what you want to do, use the GNU Lesser General 673 | Public License instead of this License. But first, please read 674 | . 675 | -------------------------------------------------------------------------------- /README.md: -------------------------------------------------------------------------------- 1 | # Blender Datasmith Export 2 | 3 | Export your Blender scene to UE4 using the Datasmith format. 4 | 5 | It aims to export all the Datasmith format supports. For now it exports: 6 | 7 | * __Meshes__ with normals, vertex colors and up to 8 UV channels. 8 | * __Hierarchy__ is exported keeping meshes references, transforms, parents and 9 | per-instance material overrides from blender. 10 | * __Textures and materials__ are exported using data from the shader graphs. 11 | Materials are closely approximated and a good amount of nodes are supported 12 | (math, mix, fresnel, vertex color and others) 13 | * __Cameras__ are exported trying to match Blender data, keeping focus 14 | distance, focal length, and aperture 15 | * __Lights__ are exported, keeping their type, power, color and size data. 16 | * __Reflection probes__ including Planar, Sphere and Box captures. 17 | 18 | Check out an overview of a previous version here: 19 | https://youtu.be/bUUDqerdqAc 20 | 21 | ## Sample: 22 | You can click the images to open a large preview. 23 | 24 | __Blender Eevee:__ 25 | 26 | Blender Eevee render 27 | 28 | __UE4 using Datasmith:__ 29 | 30 | UE4 render 31 | 32 | This result relies on the **DatasmithBlenderContent**, which is a UE4 Plugin 33 | that improves material import compatibility. Consider supporting the project by 34 | purchasing it from [here][gumroad] (Epic Games store support will be added later) 35 | 36 | [gumroad]: https://gum.co/DQvTL 37 | 38 | This result is in a custom UE4 build, which fixes some issues of the UE4 39 | importer. If you are technical to compile the engine, you can check the fork 40 | [here][ue4 fork]. Hopefully we can get to integrate our fixes into the main 41 | branch. 42 | 43 | [ue4 fork]: https://github.com/0xafbf/UnrealEngine/tree/master 44 | 45 | ## Installation: 46 | 47 | Now [__Download the latest development version__][download_link] and install 48 | from the Blender addons preferences pane. 49 | 50 | [download_link]: https://github.com/0xafbf/blender-datasmith-export/archive/master.zip 51 | 52 | ## Frequently Asked Questions: 53 | 54 | __Q: Does this support weighted normals/smoothing groups?__ 55 | 56 | A: Yes, but the plugin is unable to triangulate correctly. For the time 57 | being, you can add a `Triangulate` modifier with the `Keep Normals` option to 58 | work around this. 59 | 60 | __Q: Why are some material nodes not exported?__ 61 | 62 | A: Most of the nodes are exported, but not all of them are imported from the 63 | UE4 side. The Datasmith Blender Additions (mentioned above) improves this by 64 | adding implementations for some of these nodes. There is a 65 | [list of nodes in the wiki] with more information on which nodes are 66 | supported, and which require the UE4 plugin to work. 67 | 68 | [list of nodes in the wiki]: https://github.com/0xafbf/blender-datasmith-export/wiki/Supported-Material-Nodes 69 | 70 | __Q: What is this "custom build" you talked about earlier?__ 71 | 72 | A: I modified some of the UE4 build to fix a couple of errors when importing 73 | the scenes generated from Blender. These are related to normal maps import 74 | and very specific import issues with lights. If you're interested you can 75 | check this [custom build discussion]. 76 | 77 | [custom build discussion]: https://github.com/0xafbf/blender-datasmith-export/issues/25 78 | 79 | If you want to support the project, consider supporting via [Patreon]. 80 | 81 | [patreon]: https://www.patreon.com/0xafbf 82 | 83 | Please please, [join the project Discord][join_discord] and share your results! 84 | I want to see what you make and I am open to any feedback you have. 85 | 86 | [join_discord]: https://discord.gg/NJt5ADJ 87 | 88 | -------------------------------------------------------------------------------- /__init__.py: -------------------------------------------------------------------------------- 1 | # Copyright Andrés Botero 2019 2 | 3 | bl_info = { 4 | "name": "Unreal Datasmith format", 5 | "author": "Andrés Botero", 6 | "version": (1, 0, 3), 7 | "blender": (2, 82, 0), 8 | "location": "File > Export > Datasmith (.udatasmith)", 9 | "description": "Export scene as Datasmith asset", 10 | "warning": "", 11 | "category": "Import-Export", 12 | "support": 'COMMUNITY', 13 | "wiki_url": "https://github.com/0xafbf/blender-datasmith-export", 14 | } 15 | 16 | 17 | if "bpy" in locals(): 18 | import importlib 19 | if "export_datasmith" in locals(): 20 | importlib.reload(export_datasmith) 21 | 22 | import bpy 23 | from bpy.props import ( 24 | StringProperty, 25 | BoolProperty, 26 | FloatProperty, 27 | EnumProperty, 28 | ) 29 | from bpy_extras.io_utils import ( 30 | ImportHelper, 31 | ExportHelper, 32 | path_reference_mode, 33 | axis_conversion, 34 | ) 35 | 36 | class ExportDatasmith(bpy.types.Operator, ExportHelper): 37 | """Write a Datasmith file""" 38 | bl_idname = "export_scene.datasmith" 39 | bl_label = "Export Datasmith" 40 | bl_options = {'PRESET'} 41 | 42 | filename_ext = ".udatasmith" 43 | filter_glob: StringProperty(default="*.udatasmith", options={'HIDDEN'}) 44 | 45 | 46 | export_selected: BoolProperty( 47 | name="Selected objects only", 48 | description="Exports only the selected objects", 49 | default=False, 50 | ) 51 | export_animations: BoolProperty( 52 | name="Export animations", 53 | description="Export object animations (transforms only)", 54 | default=True, 55 | ) 56 | apply_modifiers: BoolProperty( 57 | name="Apply modifiers", 58 | description="Applies geometry modifiers when exporting. " 59 | "(This may break mesh instancing)", 60 | default=True, 61 | ) 62 | minimal_export: BoolProperty( 63 | name="Skip meshes and textures", 64 | description="Allows for faster exporting, useful if you only changed " 65 | "transforms or shaders", 66 | default=False, 67 | ) 68 | use_gamma_hack: BoolProperty( 69 | name="Use sRGB gamma hack (UE 4.24 and below)", 70 | description="Flags sRGB texture to use gamma as sRGB is not supported in old versions", 71 | default=False, 72 | ) 73 | compatibility_mode: BoolProperty( 74 | name="Compatibility mode", 75 | description="Enable this if you don't have the UE4 plugin, " 76 | "Improves material nodes support, but at a reduced quality", 77 | default=False, 78 | ) 79 | write_metadata: BoolProperty( 80 | name="Write metadata", 81 | description="Writes custom properties of objects and meshes as metadata." 82 | "It may be useful to disable this when using certain addons", 83 | default=True, 84 | ) 85 | use_logging: BoolProperty( 86 | name="Enable logging", 87 | description="Enable logging to Window > System console", 88 | default=False, 89 | ) 90 | use_profiling: BoolProperty( 91 | name="Enable profiling", 92 | description="For development only, writes a python profile 'datasmith.prof'", 93 | default=False, 94 | ) 95 | 96 | def execute(self, context): 97 | keywords = self.as_keywords(ignore=("filter_glob",)) 98 | from . import export_datasmith 99 | profile = keywords["use_profiling"] 100 | if not profile: 101 | return export_datasmith.save(context, **keywords) 102 | else: 103 | import cProfile 104 | pr = cProfile.Profile() 105 | pr.enable() 106 | result = export_datasmith.save(context, **keywords) 107 | pr.disable() 108 | path = "datasmith.prof" 109 | pr.dump_stats(path) 110 | return result 111 | 112 | def menu_func_export(self, context): 113 | self.layout.operator(ExportDatasmith.bl_idname, text="Datasmith (.udatasmith)") 114 | 115 | def register(): 116 | bpy.utils.register_class(ExportDatasmith) 117 | bpy.types.TOPBAR_MT_file_export.append(menu_func_export) 118 | 119 | def unregister(): 120 | bpy.types.TOPBAR_MT_file_export.remove(menu_func_export) 121 | bpy.utils.unregister_class(ExportDatasmith) 122 | 123 | 124 | if __name__ == "__main__": 125 | register() 126 | -------------------------------------------------------------------------------- /data_types.py: -------------------------------------------------------------------------------- 1 | # Copyright Andrés Botero 2019 2 | 3 | import struct 4 | import os 5 | from os import path 6 | import itertools 7 | import bpy 8 | import numpy as np 9 | import logging 10 | import hashlib 11 | log = logging.getLogger("bl_datasmith") 12 | 13 | def read_array_data(io, data_struct): 14 | struct_size = struct.calcsize(data_struct) 15 | data_struct = "<" + data_struct # force little endianness 16 | 17 | count = struct.unpack(" 47 and char_num < 58: 67 | return True 68 | elif char_num > 64 and char_num < 99: 69 | return True 70 | elif char_num > 96 and char_num < 123: 71 | return True 72 | return False 73 | 74 | def sanitize_name(name): 75 | first_char = "" 76 | if not is_char_valid(name[0]): 77 | first_char = "DS" 78 | sanitized = "".join(letter if is_char_valid(letter) else '_' for letter in name) 79 | return first_char + sanitized 80 | 81 | def f(x): 82 | return '{:6f}'.format(x) 83 | 84 | class Node: 85 | prefix = "" 86 | def __init__(self, name, attrs=None, children=None): 87 | self.name = name 88 | self.children = children or [] 89 | if attrs: 90 | assert type(attrs) is dict 91 | self.attrs = attrs or {} 92 | 93 | def __getitem__(self, key): 94 | return self.attrs[key] 95 | 96 | def __setitem__(self, key, value): 97 | self.attrs[key] = value 98 | 99 | def string_rep(self, first=False): 100 | previous_prefix = Node.prefix 101 | if first: 102 | Node.prefix = "" 103 | else: 104 | Node.prefix += "\t" 105 | output = Node.prefix + '<{}'.format(self.name) 106 | if first: 107 | Node.prefix = "\n" 108 | for attr in self.attrs: 109 | output += ' {key}="{value}"'.format(key=attr, value=self.attrs[attr]) 110 | 111 | if self.children: 112 | output += '>' 113 | for child in self.children: 114 | output += str(child) 115 | if len(self.children) == 1 and type(self.children[0]) == str: 116 | output += ''.format(self.name) 117 | else: 118 | output += Node.prefix + ''.format(self.name) 119 | else: 120 | output += '/>' 121 | Node.prefix = previous_prefix 122 | return output 123 | 124 | def __str__(self): 125 | return self.string_rep() 126 | def push(self, value): 127 | size = len(self.children) 128 | self.children.append(value) 129 | return size 130 | 131 | def node_value(name, value): 132 | return Node(name, {'value': f(value)}) 133 | 134 | class UDMesh(): 135 | 136 | def __init__(self, name): 137 | self.name = name 138 | 139 | self.source_models = 'SourceModels' 140 | self.struct_property = 'StructProperty' 141 | self.datasmith_mesh_source_model = 'DatasmithMeshSourceModel' 142 | 143 | self.materials = {} 144 | 145 | self.tris_material_slot = [] 146 | self.tris_smoothing_group = [] 147 | self.vertices = [] 148 | self.triangles = [] 149 | self.vertex_normals = [] 150 | self.uvs = [] 151 | self.vertex_colors = [] # In 0-255 range 152 | 153 | self.test = [] 154 | 155 | self.relative_path = None 156 | self.hash = '' 157 | 158 | # this may need some work, found some documentation: 159 | # Engine/Source/Developer/Rawmesh 160 | def write_to_path(self, path): 161 | with open(path, 'wb') as file: 162 | log.debug("writing mesh:"+self.name) 163 | #write_null(file, 8) 164 | file.write(b'\x01\x00\x00\x00\xfd\x04\x00\x00') 165 | 166 | file_start = file.tell() 167 | write_string(file, self.name) 168 | #write_null(file, 5) 169 | file.write(b'\x00\x01\x00\x00\x00') 170 | write_string(file, self.source_models) 171 | write_string(file, self.struct_property) 172 | write_null(file, 8) 173 | 174 | write_string(file, self.datasmith_mesh_source_model) 175 | 176 | write_null(file, 25) 177 | 178 | size_loc = file.tell() # here we have to write the rawmesh size two times 179 | write_data(file, 'II', 0, 0) # just some placeholder data, to rewrite at the end 180 | 181 | file.write(b'\x7d\x00\x00\x00\x00\x00\x00\x00') #125 and zero 182 | 183 | #here starts rawmesh 184 | mesh_start = file.tell() 185 | file.write(b'\x01\x00\x00\x00') # raw mesh version 186 | file.write(b'\x00\x00\x00\x00') # raw mesh lic version 187 | 188 | # further analysis revealed: 189 | # this loops are per triangle 190 | write_array_data(file, 'I', self.tris_material_slot) 191 | write_array_data(file, 'I', self.tris_smoothing_group) 192 | 193 | 194 | # per vertex 195 | write_array_data(file, 'fff', self.vertices) # VertexPositions 196 | 197 | # b2 = write_array_data(file, 'fff', self.test) 198 | # print(self.vertices) 199 | # print(self.test) 200 | # print(b1[0:10]) 201 | # print(b2[0:10]) 202 | 203 | 204 | # per vertexloop 205 | write_array_data(file, 'I', self.triangles) # WedgeIndices 206 | 207 | 208 | write_null(file, 4) # WedgeTangentX 209 | write_null(file, 4) # WedgeTangentY 210 | write_array_data(file, 'fff', self.vertex_normals) # WedgeTangentZ 211 | 212 | num_uvs = len(self.uvs) 213 | for idx in range(num_uvs): 214 | write_array_data(file, 'ff', self.uvs[idx]) # WedgeTexCoords[0] 215 | 216 | num_empty_uvs = 8 - num_uvs 217 | write_null(file, 4 * num_empty_uvs) # WedgeTexCoords[n..7] 218 | write_array_data(file, 'BBBB', self.vertex_colors) # WedgeColors 219 | # b2 = write_array_data(file, 'BBBB', self.test) # WedgeTexCoords[0] 220 | 221 | # print("old and new are same? {}".format(b1 == b2)) 222 | # print(b2[4:24]) 223 | # print(self.vertex_colors.tobytes()[:20]) 224 | # print(self.vertex_colors[:20]) 225 | # print(self.test[:20]) 226 | 227 | write_null(file, 4) # MaterialIndexToImportIndex 228 | 229 | #here ends rawmesh 230 | mesh_end = file.tell() 231 | 232 | write_null(file, 16) 233 | write_null(file, 4) 234 | file_end = file.tell() 235 | 236 | mesh_size = mesh_end-mesh_start 237 | file.seek(size_loc) 238 | write_data(file, 'II', mesh_size, mesh_size) 239 | 240 | file.seek(0) 241 | write_data(file, 'II', 1, file_end - file_start) 242 | 243 | def node(self): 244 | n = Node('StaticMesh') 245 | n['label'] = self.name 246 | n['name'] = self.name 247 | 248 | for idx, m in self.materials.items(): 249 | n.push(Node('Material', {'id':idx, 'name':m})) 250 | if self.relative_path: 251 | path = self.relative_path.replace('\\', '/') 252 | n.push(Node('file', {'path':path })) 253 | n.push(Node('LightmapUV', {'value': '-1'})) 254 | n.push(Node('Hash', {'value': self.hash})) 255 | return n 256 | 257 | def save(self, basedir, folder_name): 258 | log.debug("writing mesh:"+self.name) 259 | self.relative_path = path.join(folder_name, self.name + '.udsmesh') 260 | abs_path = path.join(basedir, self.relative_path) 261 | self.write_to_path(abs_path) 262 | self.hash = calc_hash(abs_path) 263 | 264 | 265 | def calc_hash(image_path): 266 | hash_md5 = hashlib.md5() 267 | with open(image_path, "rb") as f: 268 | for chunk in iter(lambda: f.read(4096), b""): 269 | hash_md5.update(chunk) 270 | return hash_md5.hexdigest() 271 | 272 | -------------------------------------------------------------------------------- /docs/blender.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Meisoftcoltd/blender-datasmith-export/ea4e5146b8e34e5f828c556781f40710919852bf/docs/blender.jpg -------------------------------------------------------------------------------- /docs/unreal.jpg: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Meisoftcoltd/blender-datasmith-export/ea4e5146b8e34e5f828c556781f40710919852bf/docs/unreal.jpg -------------------------------------------------------------------------------- /export_datasmith.py: -------------------------------------------------------------------------------- 1 | # Copyright Andrés Botero 2019 2 | 3 | import bpy 4 | import idprop 5 | import bmesh 6 | import math 7 | import os 8 | import time 9 | import hashlib 10 | import shutil 11 | from os import path 12 | from .data_types import UDMesh, Node, sanitize_name 13 | from mathutils import Matrix, Vector, Euler 14 | 15 | import logging 16 | log = logging.getLogger("bl_datasmith") 17 | 18 | matrix_datasmith = Matrix.Scale(100, 4) 19 | matrix_datasmith[1][1] *= -1.0 20 | 21 | matrix_normals = [ 22 | [1, 0, 0], 23 | [0, -1, 0], 24 | [0, 0, 1], 25 | ] 26 | 27 | # used for lights and cameras, whose forward is (0, 0, -1) and its right is (1, 0, 0) 28 | matrix_forward = Matrix(( 29 | (0, 1, 0, 0), 30 | (0, 0, -1, 0), 31 | (-1, 0, 0, 0), 32 | (0, 0, 0, 1) 33 | )) 34 | 35 | def exp_vector(value, exp_list): 36 | # n = Node("Color", { 37 | # nocheckin: may not work 38 | n = Node("Color", { 39 | # "Name": name, 40 | "constant": "(R=%.6f,G=%.6f,B=%.6f,A=1.0)"%tuple(value) 41 | }) 42 | return exp_list.push(n) 43 | 44 | def exp_color(value, exp_list, name=None): 45 | n = Node("Color", { 46 | "constant": "(R=%.6f,G=%.6f,B=%.6f,A=%.6f)"%tuple(value) 47 | }) 48 | if name: 49 | n["Name"] = name 50 | return exp_list.push(n) 51 | 52 | def exp_scalar(value, exp_list): 53 | n = Node("Scalar", { 54 | # "Name": "", 55 | "constant": "%f"%value 56 | }) 57 | return exp_list.push(n) 58 | 59 | def exp_texcoord(exp_list, index=0, u_tiling=1.0, v_tiling=1.0): 60 | n = Node("TextureCoordinate") 61 | n["Index"] = index 62 | n["UTiling"] = u_tiling 63 | n["VTiling"] = v_tiling 64 | 65 | pad = Node("AppendVector") 66 | pad.push(Node("0", {"expression": exp_list.push(n) })) 67 | zero = exp_scalar(0, exp_list) 68 | pad.push(Node("1", {"expression": zero })) 69 | return {"expression": exp_list.push(pad) } 70 | 71 | def exp_texcoord_node(socket, exp_list): 72 | socket_name = socket.name 73 | if socket_name == "Generated": 74 | n = Node("FunctionCall", { "Function": "/Engine/Functions/Engine_MaterialFunctions02/UVs/BoundingBoxBased_0-1_UVW"}) 75 | return { "expression": exp_list.push(n) } 76 | # if socket_name == "Normal": 77 | if socket_name == "UV": 78 | return exp_texcoord(exp_list) 79 | if socket_name == "Object": 80 | n = Node("FunctionCall", { "Function": op_custom_functions["LOCAL_POSITION"]}) 81 | return { "expression": exp_list.push(n) } 82 | # if socket_name == "Camera": 83 | # `position from camera in camera space (blue is camera forward, green is camera up` 84 | # if socket_name == "Window": 85 | # seems to be viewport coordinates 86 | # if socket_name == "Reflection": 87 | # direction of reflection in world coordinates 88 | log.warn("Texcoord node doesn't implement %s yet" % socket_name) 89 | 90 | def exp_tex_noise(socket, exp_list): 91 | 92 | # default if socket.name == "Fac" 93 | function_path = "/DatasmithBlenderContent/MaterialFunctions/TexNoise" 94 | out_socket = 0 95 | if socket.name == "Color": 96 | out_socket = 1 97 | n = Node("FunctionCall", { "Function": function_path}) 98 | exp_1 = get_expression(socket.node.inputs['Vector'], exp_list) 99 | exp_2 = get_expression(socket.node.inputs['Scale'], exp_list) 100 | if exp_1: 101 | n.push(Node("0", exp_1)) 102 | n.push(Node("1", exp_2)) 103 | return { "expression": exp_list.push(n), "OutputIndex":out_socket } 104 | 105 | 106 | def exp_tex_checker(socket, exp_list): 107 | if socket.node in cached_nodes: 108 | exp = { "expression": cached_nodes[socket.node] } 109 | else: 110 | exp = exp_function_call( 111 | "/DatasmithBlenderContent/MaterialFunctions/TexChecker", 112 | exp_list=exp_list, 113 | inputs=socket.node.inputs, 114 | force_default=True, 115 | ) 116 | cached_nodes[socket.node] = exp["expression"] 117 | 118 | # could be faster by comparing to constants instead? 119 | exp["OutputIndex"] = socket.node.outputs.find(socket.name) 120 | 121 | return exp 122 | 123 | 124 | def exp_uvmap(node, exp_list): 125 | channel_name = node.uv_map 126 | owner = datasmith_context["material_owner"] 127 | uv_index = 0 128 | m = owner.data 129 | if type(m) is bpy.types.Mesh: 130 | for idx, uv in enumerate(m.uv_layers): 131 | if uv.name == id: 132 | uv_index = idx 133 | return exp_texcoord(exp_list, uv_index) 134 | 135 | # instead of setting coordinates here, use coordinates when creating 136 | # the texture expression instead 137 | def exp_texture(path, name=None): # , tex_coord_exp): 138 | n = Node("Texture") 139 | if name: 140 | n["Name"] = name 141 | n["PathName"] = path 142 | #n.push(Node("Coordinates", tex_coord_exp)) 143 | return n 144 | 145 | def exp_rgb_to_bw(socket, exp_list): 146 | input_exp = get_expression(socket.node.inputs[0], exp_list) 147 | n = Node("DotProduct") 148 | n.push(Node("0", input_exp)) 149 | exp_1 = exp_vector( (0.2126, 0.7152, 0.0722), exp_list ) 150 | n.push( Node( "1", { "expression": exp_1 } ) ) 151 | dot_exp = exp_list.push(n) 152 | return { "expression": dot_exp } 153 | 154 | def exp_make_vec3(socket, exp_list): 155 | node = socket.node 156 | output = Node("FunctionCall", { "Function": "/Engine/Functions/Engine_MaterialFunctions02/Utility/MakeFloat3" }) 157 | output.push(Node("0", get_expression(node.inputs[0], exp_list))) 158 | output.push(Node("1", get_expression(node.inputs[1], exp_list))) 159 | output.push(Node("2", get_expression(node.inputs[2], exp_list))) 160 | return { "expression": exp_list.push(output) } 161 | 162 | def exp_make_hsv(socket, exp_list): 163 | vec3_input = exp_make_vec3(socket, exp_list) 164 | output = Node("FunctionCall", { "Function": "/DatasmithBlenderContent/MaterialFunctions/HSV_To_RGB" }) 165 | output.push(Node("0", vec3_input)) 166 | return { "expression": exp_list.push(output) } 167 | 168 | def exp_break_vec3(socket, exp_list): 169 | expression_idx = -1 170 | if socket.node in cached_nodes: 171 | expression_idx = cached_nodes[socket.node] 172 | else: 173 | output = Node("FunctionCall", { "Function": "/Engine/Functions/Engine_MaterialFunctions02/Utility/BreakOutFloat3Components" }) 174 | output.push(Node("0", get_expression(socket.node.inputs[0], exp_list))) 175 | expression_idx = exp_list.push(output) 176 | cached_nodes[socket.node] = expression_idx 177 | 178 | output_index = socket.node.outputs.find(socket.name) # could be faster by comparing to constants instead? 179 | return { "expression": expression_idx, "OutputIndex": output_index } 180 | 181 | def exp_break_hsv(socket, exp_list): 182 | 183 | expression_idx = -1 184 | if socket.node in cached_nodes: 185 | expression_idx = cached_nodes[socket.node] 186 | else: 187 | input = Node("FunctionCall", { "Function": "/DatasmithBlenderContent/MaterialFunctions/RGB_To_HSV" }) 188 | hsv_expression_idx = input.push(Node("0", get_expression(socket.node.inputs[0], exp_list))) 189 | 190 | output = Node("FunctionCall", { "Function": "/Engine/Functions/Engine_MaterialFunctions02/Utility/BreakOutFloat3Components" }) 191 | output.push(Node("0", { "expression": hsv_expression_idx })) 192 | expression_idx = exp_list.push(output) 193 | cached_nodes[socket.node] = expression_idx 194 | 195 | output_index = socket.node.outputs.find(socket.name) # could be faster by comparing to constants instead? 196 | return { "expression": expression_idx, "OutputIndex": output_index } 197 | 198 | 199 | MATH_CUSTOM_FUNCTIONS = { 200 | 'INVERSE_SQRT': (1, "/DatasmithBlenderContent/MaterialFunctions/MathInvSqrt"), 201 | 'EXPONENT': (1, "/DatasmithBlenderContent/MaterialFunctions/MathExp"), 202 | 'SINH': (1, "/DatasmithBlenderContent/MaterialFunctions/MathSinH"), 203 | 'COSH': (1, "/DatasmithBlenderContent/MaterialFunctions/MathCosH"), 204 | 'TANH': (1, "/DatasmithBlenderContent/MaterialFunctions/MathTanH"), 205 | 'MULTIPLY_ADD': (3, "/DatasmithBlenderContent/MaterialFunctions/MathMultiplyAdd"), 206 | 'COMPARE': (3, "/DatasmithBlenderContent/MaterialFunctions/MathCompare"), 207 | 'SMOOTH_MIN': (3, "/DatasmithBlenderContent/MaterialFunctions/MathSmoothMin"), 208 | 'SMOOTH_MAX': (3, "/DatasmithBlenderContent/MaterialFunctions/MathSmoothMax"), 209 | 'WRAP': (3, "/DatasmithBlenderContent/MaterialFunctions/MathWrap"), 210 | 'SNAP': (2, "/DatasmithBlenderContent/MaterialFunctions/MathSnap"), 211 | 'PINGPONG': (2, "/DatasmithBlenderContent/MaterialFunctions/MathPingPong"), 212 | } 213 | 214 | # these map 1:1 with UE4 nodes: 215 | MATH_TWO_INPUTS = { 216 | 'ADD': "Add", 217 | 'SUBTRACT': "Subtract", 218 | 'MULTIPLY': "Multiply", 219 | 'DIVIDE': "Divide", 220 | 'POWER': "Power", 221 | 'MINIMUM': "Min", 222 | 'MAXIMUM': "Max", 223 | 'MODULO': "Fmod", 224 | 'ARCTAN2': "Arctangent2", 225 | } 226 | 227 | # these use only one input in UE4 228 | MATH_ONE_INPUT = { 229 | 'SQRT': "SquareRoot", 230 | 'ABSOLUTE': "Abs", 231 | 'ROUND': "Round", 232 | 'FLOOR': "Floor", 233 | 'CEIL': "Ceil", 234 | 'FRACT': "Frac", 235 | 'SINE': "Sine", 236 | 'COSINE': "Cosine", 237 | 'TANGENT': "Tangent", 238 | 'ARCSINE': "Arcsine", 239 | 'ARCCOSINE': "Arccosine", 240 | 'ARCTANGENT': "Arctangent", 241 | 'SIGN': "Sign", 242 | 'TRUNC': "Truncate", 243 | } 244 | 245 | # these require specific implementations: 246 | MATH_CUSTOM_IMPL = { 247 | 'LOGARITHM', # ue4 only has log2 and log10 248 | 'LESS_THAN', # use UE4 If node 249 | 'GREATER_THAN', # use UE4 If node 250 | 'RADIANS', 251 | 'DEGREES', 252 | } 253 | 254 | def exp_generic(name, inputs, exp_list, force_default=False): 255 | n = Node(name) 256 | for idx, input in enumerate(inputs): 257 | input_exp = get_expression(input, exp_list, force_default) 258 | n.push(Node(str(idx), input_exp)) 259 | return { "expression": exp_list.push(n) } 260 | 261 | def exp_function_call(path, inputs, exp_list, force_default=False): 262 | n = Node("FunctionCall", {"Function": path}) 263 | for idx, input in enumerate(inputs): 264 | input_exp = get_expression(input, exp_list, force_default) 265 | n.push(Node(str(idx), input_exp)) 266 | return { "expression": exp_list.push(n) } 267 | 268 | def exp_math(node, exp_list): 269 | op = node.operation 270 | exp = None 271 | if op in MATH_TWO_INPUTS: 272 | exp = exp_generic( 273 | name= MATH_TWO_INPUTS[op], 274 | inputs= node.inputs[:2], 275 | exp_list=exp_list, 276 | force_default=True, 277 | ) 278 | elif op in MATH_ONE_INPUT: 279 | exp = exp_generic( 280 | name= MATH_ONE_INPUT[op], 281 | inputs= node.inputs[:1], 282 | exp_list=exp_list, 283 | force_default=True, 284 | ) 285 | elif op in MATH_CUSTOM_FUNCTIONS: 286 | size, path = MATH_CUSTOM_FUNCTIONS[op] 287 | exp = exp_function_call( 288 | path, 289 | inputs= node.inputs[:size], 290 | exp_list=exp_list, 291 | ) 292 | elif op in MATH_CUSTOM_IMPL: 293 | in_0 = get_expression(node.inputs[0], exp_list) 294 | n = None 295 | if op == 'RADIANS': 296 | n = Node("Multiply") 297 | n.push(Node("0", in_0)) 298 | n.push(Node("1", { "expression": exp_scalar(math.tau / 360, exp_list)})) 299 | elif op == 'DEGREES': 300 | n = Node("Multiply") 301 | n.push(Node("0", in_0)) 302 | n.push(Node("1", { "expression": exp_scalar(360 / math.tau, exp_list)})) 303 | else: 304 | # these use two inputs 305 | in_1 = get_expression(node.inputs[1], exp_list) 306 | if op == 'LOGARITHM': # take two logarithms and divide 307 | log0 = Node("Logarithm2") 308 | log0.push(Node("0", in_0)) 309 | exp_0 = exp_list.push(log0) 310 | log1 = Node("Logarithm2") 311 | log1.push(Node("0", in_1)) 312 | exp_1 = exp_list.push(log1) 313 | n = Node("Divide") 314 | n.push(Node("0", {"expression": exp_0})) 315 | n.push(Node("1", {"expression": exp_1})) 316 | elif op == 'LESS_THAN': 317 | n = Node("If") 318 | one = {"expression": exp_scalar(1.0, exp_list)} 319 | zero = {"expression": exp_scalar(0.0, exp_list)} 320 | n.push(Node("0", in_0)) # A 321 | n.push(Node("1", in_1)) # B 322 | n.push(Node("2", zero)) # A > B 323 | n.push(Node("3", one)) # A == B 324 | n.push(Node("4", one)) # A < B 325 | elif op == 'GREATER_THAN': 326 | n = Node("If") 327 | one = {"expression": exp_scalar(1.0, exp_list)} 328 | zero = {"expression": exp_scalar(0.0, exp_list)} 329 | n.push(Node("0", in_0)) # A 330 | n.push(Node("1", in_1)) # B 331 | n.push(Node("2", one)) # A > B 332 | n.push(Node("3", zero)) # A == B 333 | n.push(Node("4", zero)) # A < B 334 | assert n 335 | exp = { "expression": exp_list.push(n) } 336 | 337 | 338 | assert exp, "unrecognized math operation: %s" % op 339 | 340 | if getattr(node, "use_clamp", False): 341 | clamp = Node("Saturate") 342 | clamp.push(Node("0", exp)) 343 | exp = { "expression": exp_list.push(clamp) } 344 | return exp 345 | 346 | # these nodes should only be built-ins (green nodes) 347 | VECT_MATH_SAME_AS_SCALAR = { 348 | 'ADD', 349 | 'SUBTRACT', 350 | 'MULTIPLY', 351 | 'DIVIDE', 352 | 353 | 'ABSOLUTE', 354 | 'MINIMUM', 355 | 'MAXIMUM', 356 | 'FLOOR', 357 | 'CEIL', 358 | 'MODULO', 359 | 'SINE', 360 | 'COSINE', 361 | 'TANGENT', 362 | } 363 | 364 | 365 | VECT_MATH_NODES = { 366 | 'CROSS_PRODUCT': (2, "CrossProduct"), 367 | 'DOT_PRODUCT': (2, "DotProduct"), 368 | 'DISTANCE': (2, "Distance"), 369 | 'NORMALIZE': (1, "Normalize"), 370 | 'FRACTION': (1, "Frac"), 371 | } 372 | VECT_MATH_FUNCTIONS = { # tuples are (input_count, path) 373 | 374 | 'WRAP': (3, "/DatasmithBlenderContent/MaterialFunctions/VectWrap"), 375 | 'SNAP': (2, "/DatasmithBlenderContent/MaterialFunctions/VectSnap"), 376 | 'PROJECT': (2, "/DatasmithBlenderContent/MaterialFunctions/VectProject"), 377 | 'REFLECT': (2, "/DatasmithBlenderContent/MaterialFunctions/VectReflect"), 378 | } 379 | 380 | def exp_vect_math(node, exp_list): 381 | node_op = node.operation 382 | if node_op in VECT_MATH_SAME_AS_SCALAR: 383 | return exp_math(node, exp_list) 384 | elif node_op in VECT_MATH_NODES: 385 | size, name = VECT_MATH_NODES[node_op] 386 | return exp_generic( 387 | name=name, 388 | inputs=node.inputs[:size], 389 | exp_list=exp_list, 390 | force_default=True, 391 | ) 392 | elif node_op in VECT_MATH_FUNCTIONS: 393 | size, path = VECT_MATH_FUNCTIONS[node_op] 394 | return exp_function_call( 395 | path, 396 | inputs= node.inputs[:size], 397 | exp_list=exp_list, 398 | force_default=True, 399 | ) 400 | elif node_op == 'SCALE': 401 | return exp_generic( 402 | name= "Multiply", 403 | inputs= (node.inputs[0], node.inputs[3]), 404 | exp_list=exp_list, 405 | force_default=True, 406 | ) 407 | elif node_op == 'LENGTH': 408 | n = Node("Distance") 409 | n.push(Node("0", get_expression(node.inputs[0], exp_list) )) 410 | n.push(Node("1", { "expression": exp_vector((0,0,0), exp_list) } )) 411 | return { "expression": exp_list.push(n) } 412 | 413 | log.error("VECT_MATH node operation:%s not found" % node_op) 414 | 415 | # TODO: make test cases for all math nodes 416 | 417 | def exp_gamma(node, exp_list): 418 | n = Node(MATH_TWO_INPUTS['POWER']) 419 | exp_0 = get_expression(node.inputs["Color"], exp_list) 420 | n.push(Node("0", exp_0)) 421 | exp_1 = get_expression(node.inputs["Gamma"], exp_list) 422 | n.push(Node("1", exp_1)) 423 | return {"expression": exp_list.push(n)} 424 | 425 | op_map_color = { 426 | # MIX is handled manually 427 | 'DARKEN': "/Engine/Functions/Engine_MaterialFunctions03/Blends/Blend_Darken", 428 | # MULTIPLY is handled in MATH_TWO_INPUTS 429 | 'BURN': "/Engine/Functions/Engine_MaterialFunctions03/Blends/Blend_ColorBurn", 430 | # TODO: check for blender implementation of burn, it could mean this: 431 | #'BURN': "/Engine/Functions/Engine_MaterialFunctions03/Blends/Blend_LinearBurn", 432 | 'LIGHTEN': "/Engine/Functions/Engine_MaterialFunctions03/Blends/Blend_Lighten", 433 | 'SCREEN': "/Engine/Functions/Engine_MaterialFunctions03/Blends/Blend_Screen", 434 | 'DODGE': "/Engine/Functions/Engine_MaterialFunctions03/Blends/Blend_ColorDodge", 435 | 'OVERLAY': "/Engine/Functions/Engine_MaterialFunctions03/Blends/Blend_Overlay", 436 | # ADD is handled in MATH_TWO_INPUTS 437 | 'SOFT_LIGHT': "/Engine/Functions/Engine_MaterialFunctions03/Blends/Blend_SoftLight", 438 | 'LINEAR_LIGHT': "/Engine/Functions/Engine_MaterialFunctions03/Blends/Blend_LinearLight", 439 | 'DIFFERENCE': "/Engine/Functions/Engine_MaterialFunctions03/Blends/Blend_Difference", 440 | # SUBTRACT is handled in MATH_TWO_INPUTS 441 | # DIVIDE is handled in MATH_TWO_INPUTS 442 | 'HUE': "/DatasmithBlenderContent/MaterialFunctions/Blend_Hue", 443 | 'SATURATION': "/DatasmithBlenderContent/MaterialFunctions/Blend_Saturation", 444 | 'COLOR': "/DatasmithBlenderContent/MaterialFunctions/Blend_Color", 445 | 'VALUE': "/DatasmithBlenderContent/MaterialFunctions/Blend_Value", 446 | } 447 | 448 | def exp_blend(exp_0, exp_1, blend_type, exp_list): 449 | if blend_type == 'MIX': 450 | return exp_1 451 | n = None 452 | if blend_type in {'ADD', 'SUBTRACT', 'MULTIPLY', 'DIVIDE'}: 453 | n = Node(MATH_TWO_INPUTS[blend_type]) 454 | else: 455 | n = Node("FunctionCall", { "Function": op_map_color[blend_type]}) 456 | assert n 457 | n.push(Node("0", exp_0)) 458 | n.push(Node("1", exp_1)) 459 | return {"expression": exp_list.push(n)} 460 | 461 | def exp_mixrgb(node, exp_list): 462 | exp_1 = get_expression(node.inputs['Color1'], exp_list) 463 | exp_2 = get_expression(node.inputs['Color2'], exp_list) 464 | # TODO: optimize case fac is disconnected and equals one (or zero) 465 | # TODO: add logic for clamp 466 | 467 | exp_result = exp_blend(exp_1, exp_2, node.blend_type, exp_list) 468 | 469 | lerp = Node("LinearInterpolate") 470 | lerp.push(Node("0", exp_1)) 471 | lerp.push(Node("1", exp_result)) 472 | exp_fac = get_expression(node.inputs['Fac'], exp_list) 473 | lerp.push(Node("2", exp_fac)) 474 | 475 | return exp_list.push(lerp) 476 | 477 | op_custom_functions = { 478 | "BRIGHTCONTRAST": "/DatasmithBlenderContent/MaterialFunctions/BrightContrast", 479 | "COLOR_RAMP": "/DatasmithBlenderContent/MaterialFunctions/ColorRamp", 480 | "CURVE_RGB": "/DatasmithBlenderContent/MaterialFunctions/RGBCurveLookup2", 481 | "FRESNEL": "/DatasmithBlenderContent/MaterialFunctions/BlenderFresnel", 482 | "HUE_SAT": "/DatasmithBlenderContent/MaterialFunctions/AdjustHSV", 483 | "LAYER_WEIGHT": "/DatasmithBlenderContent/MaterialFunctions/LayerWeight", 484 | "LOCAL_POSITION": "/DatasmithBlenderContent/MaterialFunctions/BlenderLocalPosition", 485 | "MAPPING_POINT2D": "/DatasmithBlenderContent/MaterialFunctions/MappingPoint2D_2", 486 | "MAPPING_POINT3D": "/DatasmithBlenderContent/MaterialFunctions/MappingPoint3D", 487 | "MAPPING_TEX2D": "/DatasmithBlenderContent/MaterialFunctions/MappingTexture2D_2", 488 | "MAPPING_TEX3D": "/DatasmithBlenderContent/MaterialFunctions/MappingTexture3D", 489 | "MAPPING_NORMAL": "/DatasmithBlenderContent/MaterialFunctions/MappingNormal", 490 | "NORMAL_FROM_HEIGHT": "/Engine/Functions/Engine_MaterialFunctions03/Procedurals/NormalFromHeightmap", 491 | "WORLD_POSITION": "/DatasmithBlenderContent/MaterialFunctions/BlenderWorldPosition", 492 | } 493 | 494 | 495 | 496 | def exp_generic_function(node, exp_list, node_type, socket_names): 497 | n = Node("FunctionCall", { "Function": op_custom_functions[node_type]}) 498 | for idx, socket_name in enumerate(socket_names): 499 | input_expression = get_expression(node.inputs[socket_name], exp_list) 500 | n.push(Node(str(idx), input_expression)) 501 | return {"expression": exp_list.push(n) } 502 | 503 | def exp_bright_contrast(node, exp_list): 504 | return exp_generic_function(node, exp_list, 'BRIGHTCONTRAST', ('Color', 'Bright', 'Contrast')) 505 | 506 | def exp_hsv(node, exp_list): 507 | n = Node("FunctionCall", { "Function": op_custom_functions["HUE_SAT"]}) 508 | exp_hue = get_expression(node.inputs['Hue'], exp_list) 509 | n.push(Node("0", exp_hue)) 510 | exp_sat = get_expression(node.inputs['Saturation'], exp_list) 511 | n.push(Node("1", exp_sat)) 512 | exp_value = get_expression(node.inputs['Value'], exp_list) 513 | n.push(Node("2", exp_value)) 514 | exp_fac = get_expression(node.inputs['Fac'], exp_list) 515 | n.push(Node("3", exp_fac)) 516 | exp_color = get_expression(node.inputs['Color'], exp_list) 517 | n.push(Node("4", exp_color)) 518 | return exp_list.push(n) 519 | 520 | def exp_invert(node, exp_list): 521 | n = Node("OneMinus") 522 | exp_color = get_expression(node.inputs['Color'], exp_list) 523 | n.push(Node("0", exp_color)) 524 | invert_exp = exp_list.push(n) 525 | 526 | blend = Node("LinearInterpolate") 527 | exp_fac = get_expression(node.inputs['Fac'], exp_list) 528 | blend.push(Node("0", exp_color)) 529 | blend.push(Node("1", {"expression": invert_exp})) 530 | blend.push(Node("2", exp_fac)) 531 | 532 | return exp_list.push(blend) 533 | 534 | def exp_mapping(node, exp_list): 535 | if node.vector_type == 'NORMAL': 536 | mapping_type = 'MAPPING_NORMAL' 537 | else: 538 | node_input_rot = node.inputs["Rotation"] 539 | default_rot = node_input_rot.default_value 540 | uses_3d_rot = default_rot.x != 0 or default_rot.y != 0 541 | use_2d_node = not node_input_rot.links and not uses_3d_rot 542 | if node.vector_type == 'POINT' or node.vector_type == 'VECTOR': 543 | if use_2d_node: 544 | mapping_type = 'MAPPING_POINT2D' 545 | else: 546 | mapping_type = 'MAPPING_POINT3D' 547 | elif node.vector_type == 'TEXTURE': 548 | if use_2d_node: 549 | mapping_type = 'MAPPING_TEX2D' 550 | else: 551 | mapping_type = 'MAPPING_TEX3D' 552 | 553 | n = Node("FunctionCall", { "Function": op_custom_functions[mapping_type]}) 554 | 555 | input_vector = get_expression(node.inputs['Vector'], exp_list) 556 | input_location = get_expression(node.inputs['Location'], exp_list) 557 | input_rotation = get_expression(node.inputs['Rotation'], exp_list) 558 | input_scale = get_expression(node.inputs['Scale'], exp_list) 559 | n.push(Node("0", input_vector)) 560 | n.push(Node("1", input_location)) 561 | n.push(Node("2", input_rotation)) 562 | n.push(Node("3", input_scale)) 563 | 564 | return {"expression": exp_list.push(n)} 565 | def exp_normal_map(socket, exp_list): 566 | node_input = socket.node.inputs['Color'] 567 | # hack: is it safe to assume that everything under here is normal? 568 | # maybe not, because it could be masks to mix normals 569 | # most certainly, these wouldn't be colors (so should be non-srgb) 570 | push_context("NORMAL") 571 | return_exp = get_expression(node_input, exp_list) 572 | pop_context() 573 | 574 | strength_input = socket.node.inputs["Strength"] 575 | if strength_input.links or strength_input.default_value != 1.0: 576 | node_strength = Node("FunctionCall", {"Function": "/DatasmithBlenderContent/MaterialFunctions/NormalStrength"}) 577 | node_strength.push(Node("0", return_exp)) 578 | node_strength.push(Node("1", get_expression(strength_input, exp_list))) 579 | return_exp = { "expression": exp_list.push(node_strength) } 580 | return return_exp 581 | 582 | 583 | def exp_new_geometry(socket, exp_list): 584 | socket_name = socket.name 585 | if socket_name == "Position": 586 | blend = Node("FunctionCall", { "Function": op_custom_functions["WORLD_POSITION"]}) 587 | n = exp_list.push(blend) 588 | return { "expression": n } 589 | if socket_name == "Normal": 590 | blend = Node("PixelNormalWS") 591 | n = exp_list.push(blend) 592 | return { "expression": n } 593 | if socket_name == "Tangent": 594 | blend = Node("VertexTangentWS") 595 | n = exp_list.push(blend) 596 | return { "expression": n } 597 | if socket_name == "True Normal": 598 | blend = Node("VertexNormalWS") 599 | n = exp_list.push(blend) 600 | return { "expression": n } 601 | # if socket_name == "Incoming": 602 | # this would be cameraposition - worldposition 603 | # if socket_name == "Parametric": 604 | # this appears to be per-triangle barycentric coordinates 605 | # if socket_name == "Backfacing": 606 | # exactly what it says, I thought UE4 had this 607 | if socket_name == "Pointiness": 608 | exp = exp_scalar(0, exp_list) 609 | return {"expression": exp} 610 | # if socket_name == "Random Per Island": 611 | log.error("Node NEW_GEOMETRY has unhanded socket:%s" % socket_name) 612 | 613 | 614 | def exp_texture_coordinates(socket, exp_list): 615 | socket_name = socket.name 616 | if socket_name == "Position": 617 | blend = Node("FunctionCall", { "Function": op_custom_functions["WORLD_POSITION"]}) 618 | n = exp_list.push(blend) 619 | return { "expression": n } 620 | if socket_name == "Normal": 621 | blend = Node("PixelNormalWS") 622 | n = exp_list.push(blend) 623 | return { "expression": n } 624 | if socket_name == "Tangent": 625 | blend = Node("VertexTangentWS") 626 | n = exp_list.push(blend) 627 | return { "expression": n } 628 | if socket_name == "True Normal": 629 | blend = Node("VertexNormalWS") 630 | n = exp_list.push(blend) 631 | return { "expression": n } 632 | # if socket_name == "Incoming": 633 | # this would be cameraposition - worldposition 634 | # if socket_name == "Parametric": 635 | # this appears to be per-triangle barycentric coordinates 636 | # if socket_name == "Backfacing": 637 | # exactly what it says, I thought UE4 had this 638 | if socket_name == "Pointiness": 639 | exp = exp_scalar(0, exp_list) 640 | return {"expression": exp} 641 | # if socket_name == "Random Per Island": 642 | log.error("Node NEW_GEOMETRY has unhanded socket:%s" % socket_name) 643 | 644 | 645 | def exp_layer_weight(socket, exp_list): 646 | expr = None 647 | if socket.node in reverse_expressions: 648 | expr = reverse_expressions[socket.node] 649 | else: 650 | exp_blend = get_expression(socket.node.inputs['Blend'], exp_list) 651 | n = Node("FunctionCall", { "Function": op_custom_functions['LAYER_WEIGHT']}) 652 | n.push(Node("0", exp_blend)) 653 | expr = exp_list.push(n) 654 | reverse_expressions[socket.node] = expr 655 | 656 | log.warn("layer weight missing normal input") 657 | 658 | if socket.name == "Fresnel": 659 | return {"expression": expr, "OutputIndex": 0} 660 | elif socket.name == "Facing": 661 | return {"expression": expr, "OutputIndex": 1} 662 | log.error("LAYER_WEIGHT node from unknown socket") 663 | return {"expression": expr, "OutputIndex": 0} 664 | 665 | def exp_light_path(socket, exp_list): 666 | log.warn("incomplete node implementation: LIGHT_PATH") 667 | n = exp_scalar(1, exp_list) 668 | return {"expression": n} 669 | 670 | 671 | def exp_object_info(socket, exp_list): 672 | field = socket.name 673 | if field == "Location": 674 | # TODO: check if we need to transform these to blender space 675 | exp = exp_list.push(Node("ObjectPositionWS")) 676 | elif field == "Random": 677 | exp = exp_list.push(Node("PerInstanceRandom")) 678 | elif field == "Object Index": 679 | log.warning("Node Object Info>Object Index translated to random as it is used to randomize too") 680 | exp = exp_list.push(Node("PerInstanceRandom")) 681 | else: 682 | log.error("Can't write Material node 'Object Info' field:%s" % field) 683 | exp = exp_scalar(0, exp_list) 684 | 685 | return {"expression": exp, "OutputIndex": 0} 686 | 687 | 688 | DATASMITH_TEXTURE_SIZE = 1024 689 | 690 | def add_material_curve2(curve): 691 | 692 | # do some material curves initialization 693 | material_curves = datasmith_context["material_curves"] 694 | if material_curves is None: 695 | material_curves = np.zeros((DATASMITH_TEXTURE_SIZE, DATASMITH_TEXTURE_SIZE, 4)) 696 | datasmith_context["material_curves"] = material_curves 697 | datasmith_context["material_curves_count"] = 0 698 | 699 | mat_curve_idx = datasmith_context["material_curves_count"] 700 | datasmith_context["material_curves_count"] = mat_curve_idx + 1 701 | log.info("writing curve:%s" % mat_curve_idx) 702 | 703 | # write texture from top 704 | row_idx = DATASMITH_TEXTURE_SIZE - mat_curve_idx - 1 705 | values = material_curves[row_idx] 706 | factor = DATASMITH_TEXTURE_SIZE - 1 707 | 708 | # check for curve type, do sampling 709 | curve_type = type(curve) 710 | if curve_type == bpy.types.ColorRamp: 711 | for idx in range(DATASMITH_TEXTURE_SIZE): 712 | values[idx] = curve.evaluate(idx/factor) 713 | 714 | elif curve_type == bpy.types.CurveMapping: 715 | curves = curve.curves 716 | 717 | position = 0 718 | for idx in range(DATASMITH_TEXTURE_SIZE): 719 | position = idx/factor 720 | values[idx, 0] = curve.evaluate(curves[0], position) 721 | values[idx, 1] = curve.evaluate(curves[1], position) 722 | values[idx, 2] = curve.evaluate(curves[2], position) 723 | values[idx, 3] = curve.evaluate(curves[3], position) 724 | 725 | return mat_curve_idx 726 | 727 | def exp_blackbody(from_node, exp_list): 728 | n = Node("BlackBody") 729 | exp_0 = get_expression(from_node.inputs[0], exp_list) 730 | n.push(Node("0", exp_0)) 731 | exp = exp_list.push(n) 732 | return {"expression": exp} 733 | 734 | def exp_color_ramp(from_node, exp_list): 735 | ramp = from_node.color_ramp 736 | 737 | idx = add_material_curve2(ramp) 738 | 739 | level = get_expression(from_node.inputs['Fac'], exp_list) 740 | 741 | curve_idx = exp_scalar(idx, exp_list) 742 | compatibility_mode = datasmith_context["compatibility_mode"] 743 | if compatibility_mode: 744 | pixel_offset = exp_scalar(0.5, exp_list) 745 | vertical_res = exp_scalar(1/DATASMITH_TEXTURE_SIZE, exp_list) # curves texture size 746 | n = Node("Add") 747 | n.push(Node("0", {"expression": curve_idx})) 748 | n.push(Node("1", {"expression": pixel_offset})) 749 | curve_y = exp_list.push(n) 750 | n2 = Node("Multiply") 751 | n2.push(Node("0", {"expression": curve_y})) 752 | n2.push(Node("1", {"expression": vertical_res})) 753 | curve_v = exp_list.push(n2) 754 | 755 | n3 = Node("AppendVector") 756 | n3.push(Node("0", level)) 757 | n3.push(Node("1", {"expression": curve_v})) 758 | tex_coord = exp_list.push(n3) 759 | 760 | texture_exp = exp_texture("datasmith_curves", "datasmith_curves") 761 | texture_exp.push(Node("Coordinates", {"expression":tex_coord})) 762 | 763 | return exp_list.push(texture_exp) 764 | 765 | else: 766 | vertical_res = exp_scalar(DATASMITH_TEXTURE_SIZE, exp_list) # curves texture size 767 | texture = exp_texture_object("datasmith_curves", exp_list) 768 | 769 | lookup = Node("FunctionCall", { "Function": op_custom_functions["COLOR_RAMP"]}) 770 | lookup.push(Node("0", level)) 771 | lookup.push(Node("1", {"expression": curve_idx } )) 772 | lookup.push(Node("2", {"expression": vertical_res } )) 773 | lookup.push(Node("3", {"expression": texture } )) 774 | result = exp_list.push(lookup) 775 | 776 | return result 777 | 778 | def exp_curvergb(from_node, exp_list): 779 | mapping = from_node.mapping 780 | mapping.initialize() 781 | 782 | idx = add_material_curve2(mapping) 783 | 784 | factor = get_expression(from_node.inputs['Fac'], exp_list) 785 | color = get_expression(from_node.inputs['Color'], exp_list) 786 | 787 | curve_idx = exp_scalar(idx, exp_list) 788 | vertical_res = exp_scalar(DATASMITH_TEXTURE_SIZE, exp_list) # curves texture size 789 | 790 | texture = exp_texture_object("datasmith_curves", exp_list) 791 | 792 | lookup = Node("FunctionCall", { "Function": op_custom_functions["CURVE_RGB"]}) 793 | lookup.push(Node("0", color)) 794 | lookup.push(Node("1", {"expression": curve_idx})) 795 | lookup.push(Node("2", {"expression": vertical_res})) 796 | lookup.push(Node("3", {"expression": texture})) 797 | blend_exp = exp_list.push(lookup) 798 | 799 | 800 | blend = Node("LinearInterpolate") 801 | blend.push(Node("0", color)) 802 | blend.push(Node("1", {"expression": blend_exp})) 803 | blend.push(Node("2", factor)) 804 | result = exp_list.push(blend) 805 | 806 | return result 807 | 808 | def exp_texture_object(name, exp_list): 809 | n = Node("TextureObject") 810 | n.push(Node("0", { 811 | "name": "Texture", 812 | "type": "Texture", 813 | "val": name, 814 | })) 815 | return exp_list.push(n) 816 | 817 | 818 | def exp_bump(node, exp_list): 819 | height_input = node.inputs['Height'] 820 | if height_input.links: 821 | from_node = height_input.links[0].from_node 822 | if from_node.type == 'TEX_IMAGE': 823 | image = from_node.image 824 | name = sanitize_name(image.name) 825 | 826 | # ensure that texture is exported 827 | get_or_create_texture(name, image) 828 | 829 | image_object = exp_texture_object(name, exp_list) 830 | bump_node = Node("FunctionCall", { "Function": op_custom_functions["NORMAL_FROM_HEIGHT"]}) 831 | bump_node.push(Node("0", {"expression": image_object})) 832 | bump_node.push(Node("1", get_expression(node.inputs['Strength'], exp_list))) 833 | bump_node.push(Node("2", get_expression(node.inputs['Distance'], exp_list))) 834 | bump_node.push(Node("3", get_expression(from_node.inputs['Vector'], exp_list))) 835 | exp = exp_list.push(bump_node) 836 | return {"expression": exp} 837 | 838 | else: 839 | log.warn("trying to export bump node, but input is not an image") 840 | else: 841 | log.warn("trying to export bump node without connections") 842 | 843 | 844 | group_context = {} 845 | def exp_group(socket, exp_list): 846 | node = socket.node 847 | global group_context 848 | global reverse_expressions 849 | global cached_nodes 850 | new_context = {} 851 | new_cached_nodes = {} 852 | for input in node.inputs: 853 | new_context[input.name] = get_expression(input, exp_list) 854 | 855 | previous_reverse = reverse_expressions 856 | reverse_expressions = {} 857 | previous_context = group_context 858 | previous_cached_nodes = cached_nodes 859 | group_context = new_context 860 | cached_nodes = new_cached_nodes 861 | 862 | # now traverse the inner graph 863 | output_name = socket.name 864 | 865 | node_tree = node.node_tree 866 | 867 | # search for active output node: 868 | output_node = None 869 | for node in node_tree.nodes: 870 | if type(node) == bpy.types.NodeGroupOutput: 871 | if node.is_active_output or output_node is None: 872 | output_node = node 873 | 874 | # TODO: handle case when output_node is None 875 | 876 | inner_socket = output_node.inputs[output_name] 877 | inner_exp = get_expression(inner_socket, exp_list) 878 | 879 | group_context = previous_context 880 | cached_nodes = previous_cached_nodes 881 | reverse_expressions = previous_reverse 882 | return inner_exp 883 | 884 | def exp_group_input(socket, exp_list): 885 | outer_expression = group_context[socket.name] 886 | return outer_expression 887 | def exp_attribute(socket, exp_list): 888 | exp = exp_list.push(Node("VertexColor")) 889 | ret = {"expression": exp, "OutputIndex": 0} 890 | # average channels if socket is Fac 891 | if socket.name == "Fac": 892 | #TODO: check if we should do some colorimetric aware convertion to grayscale 893 | n = Node("DotProduct") 894 | n.push(Node("0", ret)) 895 | exp_1 = exp_vector((0.333333, 0.333333, 0.333333), exp_list) 896 | n.push(Node("1", {"expression": exp_1})) 897 | dot_exp = exp_list.push(n) 898 | ret = {"expression": dot_exp} 899 | return ret 900 | 901 | def exp_vertex_color(socket, exp_list): 902 | exp = exp_list.push(Node("VertexColor")) 903 | if socket.name == "Color": 904 | return {"expression": exp, "OutputIndex": 0} 905 | elif socket.name == "Alpha": 906 | return {"expression": exp, "OutputIndex": 4} 907 | 908 | def exp_fresnel(node, exp_list): 909 | n = Node("FunctionCall", { "Function": op_custom_functions["FRESNEL"]}) 910 | exp_ior = get_expression(node.inputs['IOR'], exp_list) 911 | n.push(Node("0", exp_ior)) 912 | return exp_list.push(n) 913 | 914 | 915 | context_stack = [] 916 | def push_context(context): 917 | context_stack.append(context) 918 | 919 | def pop_context(): 920 | context_stack.pop() 921 | 922 | def get_context(): 923 | if context_stack: 924 | return context_stack[-1] 925 | 926 | 927 | expression_log_prefix = "" 928 | def get_expression(field, exp_list, force_default=False): 929 | # this may return none for fields without default value 930 | # most of the time blender doesn't have default value for vector 931 | # node inputs, but it does for scalars and colors 932 | # TODO: check which cases we should be careful 933 | global expression_log_prefix 934 | field_path = f"{field.node.name}/{field.name}:{field.type}" 935 | log.debug(expression_log_prefix + field_path) 936 | 937 | if not field.links: 938 | if field.type == 'VALUE': 939 | exp = exp_scalar(field.default_value, exp_list) 940 | return {"expression": exp, "OutputIndex": 0} 941 | elif field.type == 'RGBA': 942 | exp = exp_color(field.default_value, exp_list) 943 | return {"expression": exp, "OutputIndex": 0} 944 | elif field.type == 'VECTOR': 945 | use_vector_default = force_default or type(field.default_value) in {Vector, Euler} 946 | if use_vector_default: 947 | exp = exp_vector(field.default_value, exp_list) 948 | return {"expression": exp, "OutputIndex": 0} 949 | elif field.type == 'SHADER': 950 | # same as holdout shader 951 | bsdf = { 952 | "BaseColor": {"expression": exp_scalar(0.0, exp_list)}, 953 | "Roughness": {"expression": exp_scalar(1.0, exp_list)}, 954 | } 955 | return bsdf 956 | log.debug("field has no links, and no default value " + str(field)) 957 | return None 958 | 959 | prev_prefix = expression_log_prefix 960 | expression_log_prefix += "| " 961 | return_exp = get_expression_inner(field, exp_list) 962 | expression_log_prefix = prev_prefix 963 | 964 | # if a color output is connected to a scalar input, average by using dot product 965 | if field.type == 'VALUE': 966 | other_output = field.links[0].from_socket 967 | if other_output.type == 'RGBA' or other_output.type == 'VECTOR': 968 | #TODO: check if we should do some colorimetric aware convertion to grayscale 969 | n = Node("DotProduct") 970 | exp_0 = return_exp 971 | n.push(Node("0", exp_0)) 972 | exp_1 = exp_vector((0.333333, 0.333333, 0.333333), exp_list) 973 | n.push(Node("1", {"expression": exp_1})) 974 | dot_exp = exp_list.push(n) 975 | return_exp = {"expression": dot_exp} 976 | 977 | socket = field.links[0].from_socket 978 | reverse_expressions[socket] = return_exp 979 | 980 | log.debug("%send field:%s = %s" % (expression_log_prefix, field_path, return_exp)) 981 | 982 | return return_exp 983 | 984 | def get_expression_inner(field, exp_list): 985 | 986 | node = field.links[0].from_node 987 | socket = field.links[0].from_socket 988 | log.debug(f"{expression_log_prefix} get_expression_inner {node.name} {socket.name}") 989 | # if this node is already exported, connect to that instead 990 | # I am considering in 991 | if socket in reverse_expressions: 992 | return reverse_expressions[socket] 993 | 994 | # The cases are ordered like in blender Add menu, others first, shaders second, then the rest 995 | 996 | # these are handled first as these can refer bsdfs 997 | if node.type == 'GROUP': 998 | # exp = exp_group(node, exp_list) 999 | # as exp_group can output shaders (dicts with basecolor/roughness) 1000 | # or other types of values (dicts with expression:) 1001 | # it may be better to return as is and handle internally 1002 | return exp_group(socket, exp_list)# TODO node trees can have multiple outputs 1003 | 1004 | if node.type == 'GROUP_INPUT': 1005 | return exp_group_input(socket, exp_list) 1006 | 1007 | if node.type == 'REROUTE': 1008 | return get_expression(node.inputs['Input'], exp_list) 1009 | 1010 | # Shader nodes return a dictionary 1011 | bsdf = None 1012 | if node.type == 'BSDF_PRINCIPLED': 1013 | bsdf = { 1014 | "BaseColor": get_expression(node.inputs['Base Color'], exp_list), 1015 | "Metallic": get_expression(node.inputs['Metallic'], exp_list), 1016 | "Roughness": get_expression(node.inputs['Roughness'], exp_list), 1017 | "Specular": get_expression(node.inputs['Specular'], exp_list), 1018 | } 1019 | 1020 | # only add opacity if transmission != 0 1021 | transmission_field = node.inputs['Transmission'] 1022 | add_transmission = False 1023 | if len(transmission_field.links) != 0: 1024 | add_transmission = True 1025 | elif transmission_field.default_value != 0: 1026 | add_transmission = True 1027 | if add_transmission: 1028 | n = Node("OneMinus") 1029 | exp_transmission = get_expression(node.inputs['Transmission'], exp_list) 1030 | n.push(Node("0", exp_transmission)) 1031 | exp_opacity = {"expression": exp_list.push(n)} 1032 | bsdf['Opacity'] = exp_opacity 1033 | if node.type == 'EEVEE_SPECULAR': 1034 | log.warn("EEVEE_SPECULAR incomplete implementation") 1035 | bsdf = { 1036 | "BaseColor": get_expression(node.inputs['Base Color'], exp_list), 1037 | "Roughness": get_expression(node.inputs['Roughness'], exp_list), 1038 | } 1039 | 1040 | elif node.type == 'BSDF_DIFFUSE': 1041 | bsdf = { 1042 | "BaseColor": get_expression(node.inputs['Color'], exp_list), 1043 | "Roughness": {"expression": exp_scalar(1.0, exp_list)}, 1044 | "Metallic": {"expression": exp_scalar(0.0, exp_list)}, 1045 | } 1046 | elif node.type == 'BSDF_TOON': 1047 | log.warn("BSDF_TOON incomplete implementation") 1048 | bsdf = { 1049 | "BaseColor": get_expression(node.inputs['Color'], exp_list), 1050 | "Roughness": {"expression": exp_scalar(1.0, exp_list)}, 1051 | "Metallic": {"expression": exp_scalar(0.0, exp_list)}, 1052 | } 1053 | elif node.type == 'BSDF_GLOSSY': 1054 | bsdf = { 1055 | "BaseColor": get_expression(node.inputs['Color'], exp_list), 1056 | "Roughness": get_expression(node.inputs['Roughness'], exp_list), 1057 | "Metallic": {"expression": exp_scalar(1.0, exp_list)}, 1058 | } 1059 | elif node.type == 'BSDF_VELVET': 1060 | log.warn("BSDF_VELVET incomplete implementation") 1061 | bsdf = { 1062 | "BaseColor": get_expression(node.inputs['Color'], exp_list), 1063 | "Roughness": {"expression": exp_scalar(1.0, exp_list)}, 1064 | } 1065 | elif node.type == 'BSDF_TRANSPARENT': 1066 | log.warn("BSDF_TRANSPARENT incomplete implementation") 1067 | bsdf = { 1068 | "BaseColor": get_expression(node.inputs['Color'], exp_list), 1069 | "Refraction": {"expression": exp_scalar(1.0, exp_list)}, 1070 | "Opacity": {"expression": exp_scalar(0.0, exp_list)}, 1071 | } 1072 | elif node.type == 'BSDF_TRANSLUCENT': 1073 | log.warn("BSDF_TRANSLUCENT incomplete implementation") 1074 | bsdf = { 1075 | "BaseColor": get_expression(node.inputs['Color'], exp_list), 1076 | } 1077 | elif node.type == 'BSDF_GLASS': 1078 | log.warn("BSDF_GLASS incomplete implementation") 1079 | bsdf = { 1080 | "BaseColor": get_expression(node.inputs['Color'], exp_list), 1081 | "Metallic": { "expression": exp_scalar(1, exp_list) }, 1082 | "Roughness": get_expression(node.inputs['Roughness'], exp_list), 1083 | "Refraction": get_expression(node.inputs['IOR'], exp_list), 1084 | "Opacity": {"expression": exp_scalar(0.5, exp_list)}, 1085 | } 1086 | elif node.type == 'BSDF_HAIR': 1087 | log.warn("BSDF_HAIR incomplete implementation") 1088 | bsdf = { 1089 | "BaseColor": get_expression(node.inputs['Color'], exp_list), 1090 | "Roughness": {"expression": exp_scalar(0.5, exp_list)}, 1091 | } 1092 | elif node.type == 'SUBSURFACE_SCATTERING': 1093 | log.warn("node SUBSURFACE_SCATTERING incomplete implementation") 1094 | bsdf = { 1095 | "BaseColor": get_expression(node.inputs['Color'], exp_list) 1096 | } 1097 | elif node.type == 'BSDF_REFRACTION': 1098 | log.warn("BSDF_REFRACTION incomplete implementation") 1099 | bsdf = { 1100 | "BaseColor": get_expression(node.inputs['Color'], exp_list), 1101 | "Roughness": get_expression(node.inputs['Roughness'], exp_list), 1102 | "Refraction": get_expression(node.inputs['IOR'], exp_list), 1103 | "Opacity": {"expression": exp_scalar(0.5, exp_list)}, 1104 | } 1105 | elif node.type == 'BSDF_ANISOTROPIC': 1106 | log.warn("BSDF_ANISOTROPIC incomplete implementation") 1107 | bsdf = { 1108 | "BaseColor": get_expression(node.inputs['Color'], exp_list), 1109 | "Roughness": get_expression(node.inputs['Roughness'], exp_list), 1110 | # TODO: read inputs 'Anisotropy' and 'Rotation' and 'Tangent' 1111 | } 1112 | 1113 | 1114 | 1115 | if node.type == 'EMISSION': 1116 | mult = Node("Multiply") 1117 | mult.push(Node("0", get_expression(node.inputs['Color'], exp_list))) 1118 | mult.push(Node("1", get_expression(node.inputs['Strength'], exp_list))) 1119 | mult_exp = exp_list.push(mult) 1120 | return { 1121 | "EmissiveColor": {"expression": mult_exp} 1122 | } 1123 | 1124 | if node.type == 'HOLDOUT': 1125 | return { 1126 | "BaseColor": {"expression": exp_scalar(0.0, exp_list)}, 1127 | "Roughness": {"expression": exp_scalar(1.0, exp_list)}, 1128 | } 1129 | 1130 | if node.type == 'ADD_SHADER': 1131 | expressions = get_expression(node.inputs[0], exp_list) 1132 | assert expressions 1133 | 1134 | expressions1 = get_expression(node.inputs[1], exp_list) 1135 | assert expressions1 1136 | for name, exp in expressions1.items(): 1137 | 1138 | if name in expressions: 1139 | n = Node("Add") 1140 | n.push(Node("0", expressions[name])) 1141 | n.push(Node("1", exp)) 1142 | expressions[name] = {"expression":exp_list.push(n)} 1143 | else: 1144 | expressions[name] = exp 1145 | return expressions 1146 | if node.type == 'MIX_SHADER': 1147 | expressions = get_expression(node.inputs[1], exp_list) 1148 | assert expressions 1149 | 1150 | expressions1 = get_expression(node.inputs[2], exp_list) 1151 | assert expressions1 1152 | 1153 | if ("Opacity" in expressions) or ("Opacity" in expressions1): 1154 | # if there is opacity in any, both should have opacity 1155 | if "Opacity" not in expressions: 1156 | expressions["Opacity"] = {"expression": exp_scalar(1, exp_list)} 1157 | if "Opacity" not in expressions1: 1158 | expressions1["Opacity"] = {"expression": exp_scalar(1, exp_list)} 1159 | fac_expression = get_expression(node.inputs['Fac'], exp_list) 1160 | for name, exp in expressions1.items(): 1161 | if name in expressions: 1162 | n = Node("LinearInterpolate") 1163 | n.push(Node("0", expressions[name])) 1164 | n.push(Node("1", exp)) 1165 | n.push(Node("2", fac_expression)) 1166 | expressions[name] = {"expression":exp_list.push(n)} 1167 | else: 1168 | expressions[name] = exp 1169 | return expressions 1170 | 1171 | 1172 | if field.type == 'SHADER': 1173 | 1174 | if bsdf: 1175 | if "Normal" in node.inputs: 1176 | normal_expression = get_expression(node.inputs['Normal'], exp_list) 1177 | if normal_expression: 1178 | bsdf["Normal"] = normal_expression 1179 | else: 1180 | log.error(f"couldn't find bsdf for field {field.name}") 1181 | return bsdf 1182 | # from here the return type should be {expression:node_idx, OutputIndex: socket_idx} 1183 | # Add > Input 1184 | 1185 | # if node.type == 'AMBIENT_OCCLUSION': 1186 | if node.type == 'ATTRIBUTE': 1187 | return exp_attribute(socket, exp_list) 1188 | if node.type == 'VERTEX_COLOR': 1189 | return exp_vertex_color(socket, exp_list) 1190 | 1191 | # if node.type == 'BEVEL': 1192 | # if node.type == 'CAMERA': 1193 | if node.type == 'FRESNEL': 1194 | exp = exp_fresnel(node, exp_list) 1195 | return {"expression": exp} 1196 | if node.type == 'NEW_GEOMETRY': 1197 | result = exp_new_geometry(socket, exp_list) 1198 | if result: 1199 | return result 1200 | # if node.type == 'HAIR_INFO': 1201 | if node.type == 'LAYER_WEIGHT': # fresnel and facing, with "blend" (power?) and normal param 1202 | return exp_layer_weight(socket, exp_list) 1203 | if node.type == 'LIGHT_PATH': 1204 | return exp_light_path(socket, exp_list) 1205 | if node.type == 'OBJECT_INFO': 1206 | return exp_object_info(socket, exp_list) 1207 | # if node.type == 'PARTICLE_INFO': 1208 | 1209 | if node.type == 'RGB': 1210 | exp = exp_color(node.outputs[0].default_value, exp_list) 1211 | return {"expression": exp, "OutputIndex": 0} 1212 | 1213 | # if node.type == 'TANGENT': 1214 | if node.type == 'TEX_COORD': 1215 | exp = exp_texcoord_node(socket, exp_list) 1216 | if exp: 1217 | return exp 1218 | 1219 | if node.type == 'UVMAP': 1220 | return exp_uvmap(node, exp_list) 1221 | if node.type == 'VALUE': 1222 | exp = exp_scalar(node.outputs[0].default_value, exp_list) 1223 | return {"expression": exp} 1224 | # if node.type == 'WIREFRAME': 1225 | 1226 | 1227 | # Add > Texture 1228 | # if node.type == 'TEX_BRICK': 1229 | if node.type == 'TEX_CHECKER': 1230 | return exp_tex_checker(socket, exp_list) 1231 | # if node.type == 'TEX_ENVIRONMENT': 1232 | # if node.type == 'TEX_GRADIENT': 1233 | # if node.type == 'TEX_IES': 1234 | if node.type == 'TEX_NOISE': 1235 | return exp_tex_noise(socket, exp_list) 1236 | if node.type == 'TEX_IMAGE': 1237 | cached_node = None 1238 | if node in reverse_expressions: 1239 | cached_node = reverse_expressions[node] 1240 | 1241 | if not cached_node: 1242 | image = node.image 1243 | if not image: 1244 | return { "expression": exp_scalar(0, exp_list) } 1245 | 1246 | 1247 | tex_coord = get_expression(node.inputs['Vector'], exp_list) 1248 | 1249 | 1250 | name = "" 1251 | if image: 1252 | name = sanitize_name(image.name) # name_full? 1253 | 1254 | # ensure that texture is exported 1255 | texture_type = get_context() or 'SRGB' 1256 | get_or_create_texture(name, image, texture_type) 1257 | 1258 | texture_exp = exp_texture(name) 1259 | if tex_coord: 1260 | if node.projection == 'BOX': 1261 | proj = Node("FunctionCall", { "Function": "/DatasmithBlenderContent/MaterialFunctions/TexCoord_Box"}) 1262 | proj.push(Node("0", tex_coord)) 1263 | mask_expression = { "expression": exp_list.push(proj) } 1264 | texture_exp.push(Node("Coordinates", mask_expression)) 1265 | else: 1266 | if node.projection != 'FLAT': 1267 | log.error("node TEXTURE_COORDINATE has unhandled projection: %s" % node.projection) 1268 | mask = Node("ComponentMask") 1269 | mask.push(Node("0", tex_coord)) 1270 | mask_expression = { "expression": exp_list.push(mask) } 1271 | texture_exp.push(Node("Coordinates", mask_expression)) 1272 | 1273 | cached_node = exp_list.push(texture_exp) 1274 | reverse_expressions[node] = cached_node 1275 | 1276 | output_index = 0 # RGB 1277 | # indices 1, 2, 3 are separate RGB channels 1278 | if socket.name == 'Alpha': 1279 | output_index = 4 # 1280 | 1281 | return { "expression": cached_node, "OutputIndex": output_index } 1282 | 1283 | # Add > Color 1284 | if node.type == 'BRIGHTCONTRAST': 1285 | return exp_bright_contrast(node, exp_list) 1286 | if node.type == 'GAMMA': 1287 | return exp_gamma(node, exp_list) 1288 | if node.type == 'HUE_SAT': 1289 | exp = exp_hsv(node, exp_list) 1290 | return {"expression": exp, "OutputIndex": 0} 1291 | 1292 | if node.type == 'INVERT': 1293 | exp = exp_invert(node, exp_list) 1294 | return {"expression": exp} 1295 | # if node.type == 'LIGHT_FALLOFF': 1296 | # if node.type == 'TEX_CHECKER': 1297 | # if node.type == 'TEX_CHECKER': 1298 | 1299 | if node.type == 'MIX_RGB': 1300 | exp = exp_mixrgb(node, exp_list) 1301 | return {"expression": exp, "OutputIndex": 0} 1302 | 1303 | if node.type == 'CURVE_RGB': 1304 | exp = exp_curvergb(node, exp_list) 1305 | return {"expression": exp, "OutputIndex": 0} 1306 | 1307 | # Add > Vector 1308 | 1309 | if node.type == 'BUMP': 1310 | return exp_bump(node, exp_list) 1311 | # if node.type == 'DISPLACEMENT': 1312 | if node.type == 'MAPPING': 1313 | return exp_mapping(node, exp_list) 1314 | # if node.type == 'NORMAL': 1315 | if node.type == 'NORMAL_MAP': 1316 | return exp_normal_map(socket, exp_list) 1317 | # if node.type == 'CURVE_VEC': 1318 | # if node.type == 'VECTOR_DISPLACEMENT': 1319 | # if node.type == 'VECT_TRANSFORM': 1320 | 1321 | # Add > Converter 1322 | 1323 | # if node.type == 'WAVELENGTH': 1324 | if node.type == 'BLACKBODY': 1325 | return exp_blackbody(node, exp_list) 1326 | if node.type == 'VALTORGB': 1327 | exp = exp_color_ramp(node, exp_list) 1328 | return {"expression": exp, "OutputIndex": 0} 1329 | 1330 | if node.type == 'COMBRGB': 1331 | return exp_make_vec3(socket, exp_list) 1332 | if node.type == 'COMBXYZ': 1333 | return exp_make_vec3(socket, exp_list) 1334 | if node.type == 'COMBHSV': 1335 | return exp_make_hsv(socket, exp_list) 1336 | 1337 | if node.type == 'SEPRGB': 1338 | return exp_break_vec3(socket, exp_list) 1339 | if node.type == 'SEPXYZ': 1340 | return exp_break_vec3(socket, exp_list) 1341 | if node.type == 'SEPHSV': 1342 | return exp_break_hsv(socket, exp_list) 1343 | 1344 | if node.type == 'RGBTOBW': 1345 | return exp_rgb_to_bw(socket, exp_list) 1346 | if node.type == 'MATH': 1347 | return exp_math(node, exp_list) 1348 | if node.type == 'VECT_MATH': 1349 | return exp_vect_math(node, exp_list) 1350 | 1351 | # if node.type == 'SHADERTORGB': 1352 | 1353 | # Others: 1354 | 1355 | # if node.type == 'SCRIPT': 1356 | 1357 | 1358 | log.error("node not handled" + node.type) 1359 | exp = exp_scalar(0, exp_list) 1360 | return {"expression": exp} 1361 | 1362 | 1363 | def pbr_nodetree_material(material): 1364 | log.info("Collecting material: "+material.name) 1365 | n = Node("UEPbrMaterial") 1366 | n['name'] = sanitize_name(material.name) 1367 | exp_list = Node("Expressions") 1368 | n.push(exp_list) 1369 | 1370 | output_node = ( 1371 | material.node_tree.get_output_node('EEVEE') 1372 | or material.node_tree.get_output_node('ALL') 1373 | or material.node_tree.get_output_node('CYCLES') 1374 | ) 1375 | 1376 | if not output_node: 1377 | log.warn("material %s with use_nodes does not have nodes" % material.name) 1378 | return n 1379 | 1380 | surface_field = output_node.inputs['Surface'] 1381 | if not surface_field.links: 1382 | log.warn("material %s with use_nodes does not have nodes" % material.name) 1383 | return n 1384 | 1385 | global reverse_expressions 1386 | reverse_expressions = dict() 1387 | 1388 | expressions = get_expression(surface_field, exp_list) 1389 | for key, value in expressions.items(): 1390 | n.push(Node(key, value)) 1391 | 1392 | # apparently this happens automatically, we may want to 1393 | # choose if we export with masked blend mode 1394 | #if "Opacity" in expressions: 1395 | # n.push(Node("Blendmode", {"value": "2.0"})) 1396 | 1397 | return n 1398 | 1399 | 1400 | def pbr_default_material(): 1401 | n = Node("UEPbrMaterial") 1402 | n["name"] = "DefaultMaterial" 1403 | exp_list = Node("Expressions") 1404 | grey = 0.906332 1405 | basecolor_idx = exp_color((grey, grey, grey, 1.0), exp_list) 1406 | roughness_idx = exp_scalar(0.4, exp_list) 1407 | n.push(exp_list) 1408 | n.push(Node("BaseColor", { 1409 | "expression": basecolor_idx, 1410 | "OutputIndex": "0" 1411 | })) 1412 | n.push(Node("Roughness", { 1413 | "expression": roughness_idx, 1414 | "OutputIndex": "0" 1415 | })) 1416 | return n 1417 | 1418 | def pbr_basic_material(material): 1419 | n = Node("UEPbrMaterial") 1420 | n['name'] = sanitize_name(material.name) 1421 | exp_list = Node("Expressions") 1422 | n.push(exp_list) 1423 | 1424 | basecolor_idx = exp_color(material.diffuse_color, exp_list) 1425 | roughness_idx = exp_scalar(material.roughness, exp_list) 1426 | metallic_idx = exp_scalar(material.metallic, exp_list) 1427 | specular_idx = exp_scalar(material.specular_intensity, exp_list) 1428 | 1429 | n.push(Node("BaseColor", { 1430 | "expression": basecolor_idx, 1431 | "OutputIndex": "0" 1432 | })) 1433 | n.push(Node("Roughness", { 1434 | "expression": roughness_idx, 1435 | "OutputIndex": "0" 1436 | })) 1437 | n.push(Node("Metallic", { 1438 | "expression": metallic_idx, 1439 | "OutputIndex": "0" 1440 | })) 1441 | n.push(Node("Specular", { 1442 | "expression": specular_idx, 1443 | "OutputIndex": "0" 1444 | })) 1445 | 1446 | return n 1447 | 1448 | 1449 | cached_nodes = {} 1450 | def collect_pbr_material(mat_with_owner): 1451 | datasmith_context["material_owner"] = mat_with_owner[1] 1452 | global cached_nodes 1453 | cached_nodes = {} 1454 | material = mat_with_owner[0] 1455 | if material is None: 1456 | log.debug("creating default material") 1457 | return pbr_default_material() 1458 | if not material.use_nodes: 1459 | log.debug("creating material %s without nodes" % material.name) 1460 | return pbr_basic_material(material) 1461 | log.debug("creating material %s with node_tree " % material.name) 1462 | return pbr_nodetree_material(material) 1463 | 1464 | import numpy as np 1465 | 1466 | 1467 | 1468 | 1469 | def fill_umesh(umesh, bl_mesh): 1470 | # create copy to triangulate 1471 | m = bl_mesh.copy() 1472 | bm = bmesh.new() 1473 | bm.from_mesh(m) 1474 | bmesh.ops.triangulate(bm, faces=bm.faces[:]) 1475 | # this is just to make sure a UV layer exists 1476 | bm.loops.layers.uv.verify() 1477 | bm.to_mesh(m) 1478 | bm.free() 1479 | # not sure if this is the best way to read normals 1480 | m.calc_normals_split() 1481 | 1482 | loops = m.loops 1483 | num_loops = len(loops) 1484 | 1485 | normals = np.empty(num_loops* 3, np.float32) 1486 | loops.foreach_get("normal", normals) 1487 | normals = normals.reshape((num_loops, 3)) 1488 | normals = normals @ matrix_normals 1489 | 1490 | m.transform(matrix_datasmith) 1491 | 1492 | #finish inline mesh_copy_triangulate 1493 | if len(bl_mesh.materials) == 0: 1494 | umesh.materials[0] = 'DefaultMaterial' 1495 | else: 1496 | for idx, mat in enumerate(bl_mesh.materials): 1497 | umesh.materials[idx] = sanitize_name(getattr(mat, 'name', 'DefaultMaterial')) 1498 | 1499 | polygons = m.polygons 1500 | num_polygons = len(polygons) 1501 | material_slots = np.empty(num_polygons, np.uint32) 1502 | 1503 | polygons.foreach_get("material_index", material_slots) 1504 | umesh.tris_material_slot = material_slots # [p.material_index for p in m.polygons] 1505 | 1506 | smoothing_groups = m.calc_smooth_groups()[0]; 1507 | umesh.tris_smoothing_group = np.array(smoothing_groups, np.uint32) 1508 | 1509 | vertices = m.vertices 1510 | num_vertices = len(vertices) 1511 | 1512 | vertices_array = np.empty(num_vertices* 3, np.float32) 1513 | vertices.foreach_get("co", vertices_array) 1514 | 1515 | umesh.vertices = vertices_array.reshape(-1, 3) 1516 | 1517 | loops = m.loops 1518 | num_loops = len(loops) 1519 | 1520 | triangles = np.empty(num_loops, np.uint32) 1521 | loops.foreach_get("vertex_index", triangles) 1522 | 1523 | umesh.triangles = triangles 1524 | 1525 | umesh.vertex_normals = np.ascontiguousarray(normals, " 0: 1677 | children_node = Node("children"); 1678 | # strange, this visibility flag is read from the "children" node. . . 1679 | children_node["visible"] = not bl_obj.hide_render 1680 | for child in child_nodes: 1681 | if child: 1682 | children_node.push(child) 1683 | n.push(children_node) 1684 | 1685 | 1686 | return n 1687 | 1688 | 1689 | def collect_object_custom_data(bl_obj, n, apply_modifiers, obj_mat, depsgraph, export_metadata=False): 1690 | # I think that these should be ordered by how common they are 1691 | if bl_obj.type == 'EMPTY': 1692 | pass 1693 | elif bl_obj.type == 'MESH': 1694 | bl_mesh = bl_obj.data 1695 | bl_mesh_name = bl_mesh.name 1696 | 1697 | if bl_obj.modifiers and apply_modifiers: 1698 | bl_mesh = bl_obj.evaluated_get(depsgraph).to_mesh() 1699 | bl_mesh_name = "%s__%s" % (bl_obj.name, bl_mesh.name) 1700 | 1701 | if bl_mesh.library: 1702 | libraries_dict = datasmith_context["libraries"] 1703 | prefix = libraries_dict.get(bl_mesh.library) 1704 | 1705 | if prefix is None: 1706 | lib_filename = bpy.path.basename(bl_mesh.library.filepath) 1707 | lib_clean_name = bpy.path.clean_name(lib_filename) 1708 | prefix = lib_clean_name.strip("_") 1709 | if prefix.endswith("_blend"): 1710 | prefix = prefix[:-5] # leave the underscore 1711 | next_prefix = prefix 1712 | try_count = 1 1713 | libraries_prefixes = libraries_dict.values() 1714 | # just to reaaally make sure there are no collisions 1715 | while next_prefix in libraries_prefixes: 1716 | next_prefix = "%s%d_" % (prefix, try_count) 1717 | try_count += 1 1718 | libraries_dict[bl_mesh.library] = next_prefix 1719 | prefix = next_prefix 1720 | bl_mesh_name = prefix + bl_mesh_name 1721 | 1722 | 1723 | bl_mesh_name = sanitize_name(bl_mesh_name) 1724 | meshes = datasmith_context["meshes"] 1725 | umesh = None 1726 | for mesh in meshes: 1727 | if bl_mesh_name == mesh.name: 1728 | umesh = mesh 1729 | 1730 | if umesh == None: 1731 | if len(bl_mesh.polygons) > 0: 1732 | umesh = UDMesh(bl_mesh_name) 1733 | meshes.append(umesh) 1734 | fill_umesh(umesh, bl_mesh) 1735 | 1736 | if export_metadata: 1737 | collect_object_metadata(n["name"], "StaticMesh", bl_mesh) 1738 | 1739 | material_list = datasmith_context["materials"] 1740 | if len(bl_obj.material_slots) == 0: 1741 | material_list.append((None, bl_obj)) 1742 | else: 1743 | for slot in bl_obj.material_slots: 1744 | material_list.append((slot.material, bl_obj)) 1745 | 1746 | if umesh: 1747 | n.name = 'ActorMesh' 1748 | n.push(Node('mesh', {'name': umesh.name})) 1749 | 1750 | for idx, slot in enumerate(bl_obj.material_slots): 1751 | if slot.link == 'OBJECT': 1752 | #collect_materials([slot.material], uscene) 1753 | safe_name = sanitize_name(slot.material.name) 1754 | n.push(Node('material', {'id':idx, 'name':safe_name})) 1755 | 1756 | elif bl_obj.type == 'CURVE': 1757 | 1758 | # as we cannot get geometry before evaluating depsgraph, 1759 | # we better evaluate first, and check if it has polygons. 1760 | # this might end with repeated geometry, gotta find solution. 1761 | # maybe cache "evaluated curve without modifiers"? 1762 | 1763 | bl_mesh = bl_obj.evaluated_get(depsgraph).to_mesh() 1764 | if bl_mesh and len(bl_mesh.polygons) > 0: 1765 | bl_curve = bl_obj.data 1766 | bl_curve_name = "%s_%s" % (bl_curve.name, bl_obj.name) 1767 | bl_curve_name = sanitize_name(bl_curve_name) 1768 | 1769 | umesh = UDMesh(bl_curve_name) 1770 | meshes = datasmith_context["meshes"] 1771 | meshes.append(umesh) 1772 | 1773 | fill_umesh(umesh, bl_mesh) 1774 | material_list = datasmith_context["materials"] 1775 | 1776 | n.name = 'ActorMesh' 1777 | n.push(Node('mesh', {'name': umesh.name})) 1778 | 1779 | if len(bl_obj.material_slots) == 0: 1780 | material_list.append((None, bl_obj)) 1781 | else: 1782 | for idx, slot in enumerate(bl_obj.material_slots): 1783 | material_list.append((slot.material, bl_obj)) 1784 | if slot.link == 'OBJECT': 1785 | #collect_materials([slot.material], uscene) 1786 | safe_name = sanitize_name(slot.material.name) 1787 | n.push(Node('material', {'id':idx, 'name':safe_name})) 1788 | 1789 | elif bl_obj.type == 'CAMERA': 1790 | 1791 | bl_cam = bl_obj.data 1792 | n.name = 'Camera' 1793 | 1794 | # TODO 1795 | # look_at_actor = sanitize_name(bl_cam.dof.focus_object.name) 1796 | 1797 | use_dof = "1" if bl_cam.dof.use_dof else "0" 1798 | n.push(Node("DepthOfField", {"enabled": use_dof})) 1799 | n.push(node_value('SensorWidth', bl_cam.sensor_width)) 1800 | # blender doesn't have per-camera aspect ratio 1801 | sensor_aspect_ratio = 1.777778 1802 | n.push(node_value('SensorAspectRatio', sensor_aspect_ratio)) 1803 | n.push(node_value('FocusDistance', bl_cam.dof.focus_distance * 100)) # to centimeters 1804 | n.push(node_value('FStop', bl_cam.dof.aperture_fstop)) 1805 | n.push(node_value('FocalLength', bl_cam.lens)) 1806 | n.push(Node('Post')) 1807 | # maybe move up as lights are more common? 1808 | elif bl_obj.type == 'LIGHT': 1809 | 1810 | bl_light = bl_obj.data 1811 | n.name = 'Light' 1812 | 1813 | n['type'] = 'PointLight' 1814 | n['enabled'] = '1' 1815 | n.push(node_value('SourceSize', bl_light.shadow_soft_size * 100)) 1816 | light_intensity = bl_light.energy 1817 | light_attenuation_radius = 100 * math.sqrt(bl_light.energy) 1818 | light_color = bl_light.color 1819 | light_intensity_units = 'Lumens' # can also be 'Candelas' or 'Unitless' 1820 | light_use_custom_distance = bl_light.use_custom_distance 1821 | 1822 | if bl_light.type == 'SUN': 1823 | n['type'] = 'DirectionalLight' 1824 | light_use_custom_distance = False 1825 | # light_intensity = bl_light.energy # suns are in lux 1826 | 1827 | elif bl_light.type == 'SPOT': 1828 | n['type'] = 'SpotLight' 1829 | outer_cone_angle = bl_light.spot_size * 180 / (2*math.pi) 1830 | inner_cone_angle = outer_cone_angle * (1 - bl_light.spot_blend) 1831 | if inner_cone_angle < 0.0001: 1832 | inner_cone_angle = 0.0001 1833 | n.push(node_value('InnerConeAngle', inner_cone_angle)) 1834 | n.push(node_value('OuterConeAngle', outer_cone_angle)) 1835 | 1836 | spot_use_candelas = False # TODO: test this thoroughly 1837 | if spot_use_candelas: 1838 | light_intensity_units = 'Candelas' 1839 | light_intensity = bl_light.energy * 0.08 # came up with this constant by brute force 1840 | # blender watts unit match ue4 lumens unit, but in spot lights the brightness 1841 | # changes with the spot angle when using lumens while candelas do not. 1842 | 1843 | elif bl_light.type == 'AREA': 1844 | n['type'] = 'AreaLight' 1845 | 1846 | size_w = size_h = bl_light.size 1847 | if bl_light.shape == 'RECTANGLE' or bl_light.shape == 'ELLIPSE': 1848 | size_h = bl_light.size_y 1849 | 1850 | n.push(Node('Shape', { 1851 | "type": 'None', # can be Rectangle, Disc, Sphere, Cylinder, None 1852 | "width": size_w * 100, # convert to cm 1853 | "length": size_h * 100, 1854 | "LightType": "Rect", # can be "Point", "Spot", "Rect" 1855 | })) 1856 | if light_use_custom_distance: 1857 | light_attenuation_radius = 100 * bl_light.cutoff_distance 1858 | # TODO: check how lights work when using a node tree 1859 | # if bl_light.use_nodes and bl_light.node_tree: 1860 | 1861 | # node = bl_light.node_tree.nodes['Emission'] 1862 | # light_color = node.inputs['Color'].default_value 1863 | # light_intensity = node.inputs['Strength'].default_value # have to check how to relate to candelas 1864 | # log.error("unsupported: using nodetree for light " + bl_obj.name) 1865 | 1866 | n.push(node_value('Intensity', light_intensity)) 1867 | n.push(node_value('AttenuationRadius', light_attenuation_radius)) 1868 | n.push(Node('IntensityUnits', {'value': light_intensity_units})) 1869 | n.push(Node('Color', { 1870 | 'usetemp': '0', 1871 | 'temperature': '6500.0', 1872 | 'R': f(light_color[0]), 1873 | 'G': f(light_color[1]), 1874 | 'B': f(light_color[2]), 1875 | })) 1876 | elif bl_obj.type == 'LIGHT_PROBE': 1877 | # TODO: LIGHT PROBE 1878 | n.name = 'CustomActor' 1879 | bl_probe = bl_obj.data 1880 | if bl_probe.type == 'PLANAR': 1881 | n["PathName"] = "/DatasmithBlenderContent/Blueprints/BP_BlenderPlanarReflection" 1882 | 1883 | elif bl_probe.type == 'CUBEMAP': 1884 | ## we could also try using min/max if it makes a difference 1885 | _, _, obj_scale = obj_mat.decompose() 1886 | avg_scale = (obj_scale.x + obj_scale.y + obj_scale.z) * 0.333333 1887 | 1888 | if bl_probe.influence_type == 'BOX': 1889 | n["PathName"] = "/DatasmithBlenderContent/Blueprints/BP_BlenderBoxReflection" 1890 | 1891 | 1892 | falloff = bl_probe.falloff # this value is 0..1 1893 | transition_distance = falloff * avg_scale 1894 | prop = Node("KeyValueProperty", {"name": "TransitionDistance", "type":"Float", "val": "%.6f"%transition_distance}) 1895 | n.push(prop) 1896 | else: # if bl_probe.influence_type == 'ELIPSOID' 1897 | n["PathName"] = "/DatasmithBlenderContent/Blueprints/BP_BlenderSphereReflection" 1898 | probe_radius = bl_probe.influence_distance * 100 * avg_scale 1899 | radius = Node("KeyValueProperty", {"name": "Radius", "type":"Float", "val": "%.6f"%probe_radius}) 1900 | n.push(radius) 1901 | elif bl_probe.type == 'GRID': 1902 | # for now we just export to custom object, but it doesn't affect the render on 1903 | # the unreal side. would be cool if it made a difference by setting volumetric importance volume 1904 | n["PathName"] = "/DatasmithBlenderContent/Blueprints/BP_BlenderGridProbe" 1905 | 1906 | # blender influence_distance is outwards, maybe we should grow the object to match? 1907 | # outward_influence would be 1.0 + influence_distance / size maybe? 1908 | # obj_mat = obj_mat @ Matrix.Scale(outward_influence, 4) 1909 | 1910 | else: 1911 | log.error("unhandled light probe") 1912 | elif bl_obj.type == 'ARMATURE': 1913 | pass 1914 | else: 1915 | log.error("unrecognized object type: %s" % bl_obj.type) 1916 | 1917 | 1918 | 1919 | def collect_object_transform(bl_obj, instance_matrix=None): 1920 | mat_basis = instance_matrix or bl_obj.matrix_world 1921 | obj_mat = matrix_datasmith @ mat_basis @ matrix_datasmith.inverted() 1922 | 1923 | if bl_obj.type in 'CAMERA' or bl_obj.type == 'LIGHT': 1924 | obj_mat = obj_mat @ matrix_forward 1925 | elif bl_obj.type == 'LIGHT_PROBE': 1926 | bl_probe = bl_obj.data 1927 | if bl_probe.type == 'PLANAR': 1928 | obj_mat = obj_mat @ Matrix.Scale(0.05, 4) 1929 | elif bl_probe.type == 'CUBEMAP': 1930 | if bl_probe.influence_type == 'BOX': 1931 | size = bl_probe.influence_distance * 100 1932 | obj_mat = obj_mat @ Matrix.Scale(size, 4) 1933 | 1934 | obj_mat.freeze() # TODO: check if this is needed 1935 | return obj_mat 1936 | 1937 | 1938 | def collect_object_metadata(obj_name, obj_type, obj): 1939 | metadata = None 1940 | found_metadata = False 1941 | obj_props = obj.keys() 1942 | for prop_name in obj_props: 1943 | if prop_name in {"_RNA_UI", "cycles", "cycles_visibility"}: 1944 | continue 1945 | if prop_name.startswith("archipack_"): 1946 | continue 1947 | if metadata is None: 1948 | names = (obj_type, obj_name) 1949 | metadata = Node("MetaData", {"name": "%s_%s"%names, "reference":"%s.%s"%names } ) 1950 | 1951 | out_value = prop_value = obj[prop_name] 1952 | prop_type = type(prop_value) 1953 | out_type = None 1954 | if prop_type is str: 1955 | out_type = "String" 1956 | elif prop_type in {float, int}: 1957 | out_type = "Float" 1958 | out_value = f(prop_value) 1959 | elif prop_type is idprop.types.IDPropertyArray: 1960 | out_type = "Vector" 1961 | out_value = ",".join(f(v) for v in prop_value) 1962 | elif prop_type is idprop.types.IDPropertyGroup: 1963 | if len(out_value) == 0: 1964 | continue 1965 | out_type = "String" 1966 | out_value = str(prop_value.to_dict()) 1967 | # elif prop_type is list: 1968 | # archipack uses some list props, I don't think these are useful 1969 | # but we should check if there's something specific we should do. 1970 | else: 1971 | log.error("%s: %s has unsupported metadata with type:%s" % (obj_type, obj_name, prop_type)) 1972 | # write as string, and sanitize output 1973 | out_type = "String" 1974 | out_value = str(out_value) 1975 | 1976 | if out_type == "String": 1977 | out_value = out_value.replace("<", "<") 1978 | out_value = out_value.replace(">", ">") 1979 | out_value = out_value.replace('"', """) 1980 | 1981 | kvp = Node("KeyValueProperty", {"name": prop_name, "val": out_value, "type": out_type } ) 1982 | metadata.push(kvp) 1983 | found_metadata = True 1984 | if found_metadata: 1985 | datasmith_context["metadata"].append(metadata) 1986 | 1987 | def node_value(name, value): 1988 | return Node(name, {'value': '{:6f}'.format(value)}) 1989 | def f(value): 1990 | return '{:6f}'.format(value) 1991 | 1992 | def collect_environment(world): 1993 | 1994 | if not world.use_nodes: 1995 | return 1996 | 1997 | log.info("Collecting environment") 1998 | nodes = world.node_tree 1999 | output = nodes.get_output_node('EEVEE') or nodes.get_output_node('ALL') or nodes.get_output_node('CYCLES') 2000 | background_node = output.inputs['Surface'].links[0].from_node 2001 | if not 'Color' in background_node.inputs: 2002 | return 2003 | if not background_node.inputs['Color'].links: 2004 | return 2005 | source_node = background_node.inputs['Color'].links[0].from_node 2006 | if source_node.type != 'TEX_ENVIRONMENT': 2007 | log.info("Background texture is "+ source_node.type) 2008 | return 2009 | 2010 | log.info("found environment, collecting...") 2011 | image = source_node.image 2012 | 2013 | tex_name = sanitize_name(image.name) 2014 | get_or_create_texture(tex_name, image) 2015 | 2016 | tex_node = Node("Texture", { 2017 | "tex": tex_name, 2018 | }) 2019 | 2020 | n2 = Node("Environment", { 2021 | "name": "world_environment_lighting", 2022 | "label": "world_environment_lighting", 2023 | }) 2024 | n2.push(tex_node) 2025 | n2.push(Node("Illuminate", { 2026 | "enabled": "1" 2027 | })) 2028 | n = Node("Environment", { 2029 | "name": "world_environment_background", 2030 | "label": "world_environment_background", 2031 | }) 2032 | n.push(tex_node) 2033 | n.push(Node("Illuminate", { 2034 | "enabled": "0" 2035 | })) 2036 | 2037 | return [n, n2] 2038 | 2039 | 2040 | 2041 | def get_file_header(): 2042 | 2043 | n = Node('DatasmithUnrealScene') 2044 | 2045 | from . import bl_info 2046 | plugin_version = bl_info['version'] 2047 | plugin_version_string = "%s.%s.%s" % plugin_version 2048 | n.push(Node('Version', children=[plugin_version_string])) 2049 | n.push(Node('SDKVersion', children=['4.24E0'])) 2050 | n.push(Node('Host', children=['Blender'])) 2051 | 2052 | blender_version = bpy.app.version_string 2053 | n.push(Node('Application', { 2054 | 'Vendor': 'Blender Foundation', 2055 | 'ProductName': 'Blender', 2056 | 'ProductVersion': blender_version, 2057 | })) 2058 | 2059 | import os, platform 2060 | os_name = "%s %s" % (platform.system(), platform.release()) 2061 | user_name = os.getlogin() 2062 | 2063 | n.push(Node('User', { 2064 | 'ID': user_name, 2065 | 'OS': os_name, 2066 | })) 2067 | return n 2068 | 2069 | 2070 | # in_type can be SRGB, LINEAR or NORMAL 2071 | def get_or_create_texture(in_name, in_image, in_type='SRGB'): 2072 | textures = datasmith_context["textures"] 2073 | for name, tex, _ in textures: 2074 | if name == in_name: 2075 | return tex 2076 | log.debug("collecting texture:%s" % in_name) 2077 | 2078 | new_tex = (in_name, in_image, in_type) 2079 | textures.append(new_tex) 2080 | return new_tex 2081 | 2082 | def get_datasmith_curves_image(): 2083 | log.info("baking curves") 2084 | 2085 | curve_list = datasmith_context["material_curves"] 2086 | if curve_list is None: 2087 | return None 2088 | 2089 | curves_image = None 2090 | if "datasmith_curves" in bpy.data.images: 2091 | curves_image = bpy.data.images["datasmith_curves"] 2092 | else: 2093 | curves_image = bpy.data.images.new( 2094 | "datasmith_curves", 2095 | DATASMITH_TEXTURE_SIZE, 2096 | DATASMITH_TEXTURE_SIZE, 2097 | alpha=True, 2098 | float_buffer=True 2099 | ) 2100 | curves_image.colorspace_settings.is_data = True 2101 | curves_image.file_format = 'OPEN_EXR' 2102 | 2103 | curves_image.pixels[:] = curve_list.reshape((-1,)) 2104 | return curves_image 2105 | 2106 | 2107 | TEXTURE_MODE_DIFFUSE = "0" 2108 | TEXTURE_MODE_SPECULAR = "1" 2109 | TEXTURE_MODE_NORMAL = "2" 2110 | TEXTURE_MODE_NORMAL_GREEN_INV = "3" 2111 | TEXTURE_MODE_DISPLACE = "4" 2112 | TEXTURE_MODE_OTHER = "5" 2113 | TEXTURE_MODE_BUMP = "6" # this converts textures to normal maps automatically 2114 | 2115 | # saves image, and generates node with image description to add to export 2116 | def save_texture(texture, basedir, folder_name, minimal_export = False, use_gamma_hack=False): 2117 | name, image, img_type = texture 2118 | 2119 | log.info("writing texture:"+name) 2120 | 2121 | ext = ".png" 2122 | if image.file_format == 'JPEG': 2123 | ext = ".jpg" 2124 | elif image.file_format == 'HDR': 2125 | ext = ".hdr" 2126 | elif image.file_format == 'OPEN_EXR': 2127 | ext = ".exr" 2128 | elif image.file_format == 'TARGA' or image.file_format == 'TARGA_RAW': 2129 | ext = ".tga" 2130 | 2131 | safe_name = sanitize_name(name) + ext 2132 | image_path = path.join(basedir, folder_name, safe_name) 2133 | skip_image = minimal_export and not path.exists(image_path) 2134 | 2135 | # fix for invalid images, like one in mr_elephant sample. 2136 | valid_image = (image.channels != 0) 2137 | if valid_image and not skip_image: 2138 | source_path = image.filepath_from_user() 2139 | 2140 | if image.packed_file: 2141 | with open(image_path, "wb") as f: 2142 | f.write(image.packed_file.data) 2143 | elif source_path and source_path != image_path: 2144 | shutil.copyfile(source_path, image_path) 2145 | else: 2146 | image.filepath_raw = image_path 2147 | image.save() 2148 | if source_path: 2149 | image.filepath_raw = source_path 2150 | 2151 | n = Node('Texture') 2152 | n['name'] = name 2153 | n['file'] = path.join(folder_name, safe_name) 2154 | n['rgbcurve'] = 0.0 2155 | n['srgb'] = "1" # this parameter is only read on 4.25 onwards 2156 | 2157 | n['texturemode'] = TEXTURE_MODE_DIFFUSE 2158 | if image.file_format == 'HDR': 2159 | n['texturemode'] = TEXTURE_MODE_OTHER 2160 | n['rgbcurve'] = "1.000000" 2161 | elif img_type == 'NORMAL': 2162 | n['texturemode'] = TEXTURE_MODE_NORMAL_GREEN_INV 2163 | n['srgb'] = "2" # only read on 4.25 onwards, but we can still write it 2164 | elif image.colorspace_settings.is_data: 2165 | n['texturemode'] = TEXTURE_MODE_SPECULAR 2166 | n['srgb'] = "2" # only read on 4.25 onwards, but we can still write it 2167 | if use_gamma_hack: 2168 | n['rgbcurve'] = "0.454545" 2169 | 2170 | n['texturefilter'] = "3" 2171 | if valid_image: 2172 | img_hash = calc_hash(image_path) 2173 | n.push(Node('Hash', {'value': img_hash})) 2174 | return n 2175 | 2176 | 2177 | def calc_hash(image_path): 2178 | hash_md5 = hashlib.md5() 2179 | with open(image_path, "rb") as f: 2180 | for chunk in iter(lambda: f.read(4096), b""): 2181 | hash_md5.update(chunk) 2182 | return hash_md5.hexdigest() 2183 | 2184 | 2185 | datasmith_context = None 2186 | def collect_and_save(context, args, save_path): 2187 | 2188 | start_time = time.monotonic() 2189 | 2190 | global datasmith_context 2191 | datasmith_context = { 2192 | "objects": [], 2193 | "anim_objects": [], 2194 | "textures": [], 2195 | "meshes": [], 2196 | "materials": [], 2197 | "material_curves": None, 2198 | "metadata": [], 2199 | "compatibility_mode": args["compatibility_mode"], 2200 | "libraries": {}, 2201 | } 2202 | 2203 | log.info("collecting objects") 2204 | datasmith_context['depsgraph'] = context.evaluated_depsgraph_get() 2205 | all_objects = context.scene.objects 2206 | root_objects = [obj for obj in all_objects if obj.parent is None] 2207 | 2208 | objects = [] 2209 | 2210 | selected_only = args["export_selected"] 2211 | apply_modifiers = args["apply_modifiers"] 2212 | minimal_export = args["minimal_export"] 2213 | export_animations = args["export_animations"] 2214 | 2215 | if export_animations: 2216 | frame_at_export_time = context.scene.frame_current 2217 | frame_start = context.scene.frame_start 2218 | frame_end = context.scene.frame_end 2219 | 2220 | write_metadata = args["write_metadata"] 2221 | 2222 | for obj in root_objects: 2223 | uobj = collect_object(obj, 2224 | selected_only=selected_only, 2225 | apply_modifiers=apply_modifiers, 2226 | export_animations=export_animations, 2227 | export_metadata=write_metadata, 2228 | ) 2229 | if uobj: 2230 | objects.append(uobj) 2231 | 2232 | log.info("collecting animations") 2233 | anims = [] 2234 | if export_animations: 2235 | 2236 | # TODO: found a bit late about this: we need to test and profile 2237 | # https://docs.blender.org/api/current/bpy_extras.anim_utils.html 2238 | 2239 | anim_objs = datasmith_context["anim_objects"] 2240 | 2241 | num_frames = frame_end - frame_start + 1 2242 | num_objects = len(anim_objs) 2243 | object_timelines = [[Matrix() for frame in range(num_frames)] for obj in range(num_objects)] 2244 | object_animates = [False for num in range(num_objects)] 2245 | # collect phase? 2246 | 2247 | for arr_idx, frame_idx in enumerate(range(frame_start, frame_end+1)): 2248 | 2249 | context.scene.frame_set(frame_idx) 2250 | 2251 | for obj_idx, obj in enumerate(anim_objs): 2252 | 2253 | obj_mat = collect_object_transform(obj[0]) 2254 | object_timelines[obj_idx][arr_idx] = obj_mat 2255 | 2256 | if arr_idx == 0: 2257 | continue 2258 | 2259 | if not object_animates[obj_idx]: 2260 | changed = obj_mat != object_timelines[obj_idx][arr_idx -1] 2261 | if changed: 2262 | object_animates[obj_idx] = True 2263 | 2264 | anims_strings = [] 2265 | # write phase: 2266 | to_deg = 360 / math.tau 2267 | rot_fix = np.array((to_deg, -to_deg, to_deg)) 2268 | for idx, timeline in enumerate(object_timelines): 2269 | if not object_animates[idx]: 2270 | continue 2271 | log.error(f"writing obj:{idx}") 2272 | 2273 | timeline_repr = ['''{ 2274 | "actor": "''', anim_objs[idx][1], '",' 2275 | ] 2276 | 2277 | translations = np.empty((num_frames, 4), dtype=np.float32) 2278 | rotations = np.empty((num_frames, 4), dtype=np.float32) 2279 | scales = np.empty((num_frames, 4), dtype=np.float32) 2280 | translations[:, 0] = np.arange(frame_start, frame_end+1) 2281 | rotations[:, 0] = np.arange(frame_start, frame_end+1) 2282 | scales[:, 0] = np.arange(frame_start, frame_end+1) 2283 | 2284 | for frame_idx, frame_mat in enumerate(timeline): 2285 | loc, rot, scale = frame_mat.decompose() 2286 | tx_slice = (frame_idx, slice(1,4)) 2287 | translations[frame_idx, 1:4] = loc 2288 | rotations[frame_idx, 1:4] = rot_fix * rot.to_euler('XYZ') 2289 | scales[frame_idx, 1:4] = scale 2290 | 2291 | trans_expression = ",".join( 2292 | '{"id":%d,"x":%f,"y":%f,"z":%f}'% tuple(v) 2293 | for v in translations 2294 | ) 2295 | timeline_repr.extend(('"trans":[', trans_expression, '],')) 2296 | 2297 | rot_expression = ",".join( 2298 | '{"id":%d,"x":%f,"y":%f,"z":%f}'% tuple(v) 2299 | for v in rotations 2300 | ) 2301 | timeline_repr.extend(('"rot":[', rot_expression, '],')) 2302 | 2303 | scale_expression = ",".join( 2304 | '{"id":%d,"x":%f,"y":%f,"z":%f}'% tuple(v) 2305 | for v in scales 2306 | ) 2307 | timeline_repr.extend(('"scl":[', scale_expression, '],')) 2308 | 2309 | timeline_repr.append('"type":"transform"}') 2310 | result = "".join(timeline_repr) 2311 | anims_strings.append(result) 2312 | 2313 | if anims_strings: 2314 | output = [""" 2315 | { 2316 | "version": "0.1", 2317 | "fps": """, 2318 | str(context.scene.render.fps), 2319 | """, 2320 | "animations": [""", 2321 | ",".join(anims_strings), 2322 | "]}" 2323 | ] 2324 | 2325 | output_text = "".join(output) 2326 | anims.append(output_text) 2327 | 2328 | # cleanup 2329 | context.scene.frame_set(frame_at_export_time) 2330 | 2331 | 2332 | environment = collect_environment(context.scene.world) 2333 | 2334 | log.info("Collecting materials") 2335 | materials = datasmith_context["materials"] 2336 | unique_materials = [] 2337 | for material in materials: 2338 | found = False 2339 | for mat in unique_materials: 2340 | if material[0] is mat[0]: 2341 | found = True 2342 | break 2343 | if not found: 2344 | unique_materials.append(material) 2345 | material_nodes = [collect_pbr_material(mat) for mat in unique_materials] 2346 | 2347 | curves_image = get_datasmith_curves_image() 2348 | if curves_image: 2349 | get_or_create_texture("datasmith_curves", curves_image) 2350 | 2351 | log.info("finished collecting, now saving") 2352 | 2353 | basedir, file_name = path.split(save_path) 2354 | folder_name = file_name + '_Assets' 2355 | # make sure basepath_Assets directory exists 2356 | try: 2357 | os.makedirs(path.join(basedir, folder_name)) 2358 | except FileExistsError as e: 2359 | pass 2360 | 2361 | log.info("writing anims") 2362 | anim_nodes = [] 2363 | for anim in anims: 2364 | 2365 | filename = path.join(basedir, folder_name, "anim_new.json") 2366 | log.info("writing to file:%s" % filename) 2367 | with open(filename, 'w') as f: 2368 | f.write(output_text) 2369 | 2370 | anim = Node("LevelSequence", {"name": "anim_new"}) 2371 | anim.push(Node("File", {"path": f"{folder_name}/anim_new.json"})) 2372 | anim_nodes.append(anim) 2373 | 2374 | 2375 | 2376 | 2377 | log.info("writing meshes") 2378 | for mesh in datasmith_context["meshes"]: 2379 | mesh.save(basedir, folder_name) 2380 | 2381 | 2382 | 2383 | log.info("writing textures") 2384 | 2385 | tex_nodes = [] 2386 | use_gamma_hack = args["use_gamma_hack"] 2387 | for tex in datasmith_context["textures"]: 2388 | tex_node = save_texture(tex, basedir, folder_name, minimal_export, use_gamma_hack) 2389 | tex_nodes.append(tex_node) 2390 | 2391 | log.info("building XML tree") 2392 | 2393 | n = get_file_header() 2394 | 2395 | for anim in anim_nodes: 2396 | n.push(anim) 2397 | 2398 | for obj in objects: 2399 | n.push(obj) 2400 | 2401 | if environment: 2402 | for env in environment: 2403 | n.push(env) 2404 | 2405 | for mesh in datasmith_context["meshes"]: 2406 | n.push(mesh.node()) 2407 | for mat in material_nodes: 2408 | n.push(mat) 2409 | 2410 | for tex in tex_nodes: 2411 | n.push(tex) 2412 | 2413 | for metadata in datasmith_context["metadata"]: 2414 | n.push(metadata) 2415 | 2416 | end_time = time.monotonic() 2417 | total_time = end_time - start_time 2418 | 2419 | log.info("generating datasmith data took:%f"%total_time) 2420 | n.push( 2421 | Node("Export", {"Duration":total_time}) 2422 | ) 2423 | 2424 | log.info("generating xml") 2425 | result = n.string_rep(first=True) 2426 | 2427 | filename = path.join(basedir, file_name + '.udatasmith') 2428 | log.info("writing to file: %s" % filename) 2429 | 2430 | with open(filename, 'w') as f: 2431 | f.write(result) 2432 | log.info("export finished") 2433 | 2434 | 2435 | 2436 | def save(context, *, filepath, **kwargs): 2437 | 2438 | handler = None 2439 | use_logging = bool(kwargs["use_logging"]) 2440 | 2441 | if use_logging: 2442 | log_path = filepath + ".log" 2443 | handler = logging.FileHandler(log_path, mode='w') 2444 | 2445 | formatter = logging.Formatter( 2446 | fmt='%(asctime)s.%(msecs)03d %(levelname)-8s %(message)s', 2447 | datefmt='%Y-%m-%d %H:%M:%S' 2448 | ) 2449 | handler.setFormatter(formatter) 2450 | log.addHandler(handler) 2451 | log.setLevel(logging.DEBUG) 2452 | handler.setLevel(logging.DEBUG) 2453 | try: 2454 | from os import path 2455 | basepath, ext = path.splitext(filepath) 2456 | 2457 | log.info("Starting Datasmith Export") 2458 | collect_and_save(context, kwargs, basepath) 2459 | log.info("Finished Datasmith Export") 2460 | 2461 | except Exception as error: 2462 | log.error("Datasmith export error:") 2463 | log.error(error) 2464 | raise 2465 | 2466 | finally: 2467 | if use_logging: 2468 | log.info("Finished logging to path:" + log_path) 2469 | handler.close() 2470 | log.removeHandler(handler) 2471 | 2472 | return {'FINISHED'} 2473 | 2474 | -------------------------------------------------------------------------------- /testing/README.md: -------------------------------------------------------------------------------- 1 | # Testing tools 2 | In this folder there is a python script that runs the export command, with some 3 | extra steps for testing, and a powershell script that runs the command on 4 | different test files. you can use these as sample scripts for your convenience. 5 | 6 | -------------------------------------------------------------------------------- /testing/datasmith.prof: -------------------------------------------------------------------------------- https://raw.githubusercontent.com/Meisoftcoltd/blender-datasmith-export/ea4e5146b8e34e5f828c556781f40710919852bf/testing/datasmith.prof -------------------------------------------------------------------------------- /testing/export_all.ps1: -------------------------------------------------------------------------------- 1 | 2 | param ( 3 | [switch] $benchmark = $false 4 | ) 5 | 6 | Push-Location $PSScriptRoot 7 | 8 | $test_files = ( 9 | "archiviz/archiviz.blend", 10 | "barbershop/barbershop_interior_cpu.blend", 11 | "blender_splash_fishy_cat/fishy_cat.blend", 12 | "classroom/classroom.blend", 13 | "forest/forest.blend", 14 | "mr_elephant/mr_elephant.blend", 15 | "pabellon_barcelona/pavillon_barcelone_v1_2.blend", 16 | "pokedstudio/splash-pokedstudio.blend", 17 | "race_spaceship/race_spaceship.blend", 18 | "stylized_levi/stylized_levi.blend", 19 | "temple/temple.blend", 20 | "the_junk_shop/the_junk_shop.blend", 21 | "tree_creature/tree_creature.blend", 22 | "wanderer/wanderer.blend", 23 | "wasp_bot/wasp_bot.blend" 24 | ) 25 | 26 | $args = @() 27 | 28 | if ($benchmark) { 29 | $args += "-benchmark" 30 | } 31 | $env:blender_args = $args 32 | 33 | Measure-Command -Expression { 34 | foreach ($file in $test_files) { 35 | blender -b $file -P test_datasmith_export.py -- $env:blender_args 36 | } 37 | } 38 | 39 | # best time: 9:05, intel i7 4790k 40 | 41 | 42 | Pop-Location 43 | -------------------------------------------------------------------------------- /testing/test_datasmith_export.py: -------------------------------------------------------------------------------- 1 | # 2 | # 3 | # datasmith export test suite 4 | # run this file with the following command: 5 | # blender -b sample_file.blend -P test_datasmith_export.py 6 | 7 | import bpy 8 | import bpy.ops 9 | import logging 10 | import os 11 | import shutil 12 | import sys 13 | import time 14 | 15 | is_benchmark = "-benchmark" in sys.argv 16 | 17 | logging_level = logging.DEBUG # INFO 18 | 19 | if is_benchmark: 20 | logging_level = logging.WARNING 21 | 22 | logging.basicConfig( 23 | level=logging_level, 24 | # format='%(asctime)s.%(msecs)03d %(name)-12s %(levelname)-8s %(message)s', 25 | format='%(asctime)s.%(msecs)03d %(levelname)-8s %(message)s', 26 | datefmt='%Y-%m-%d %H:%M:%S' 27 | ) 28 | log = logging.getLogger() 29 | 30 | clean_path = os.path.normpath(bpy.data.filepath) 31 | 32 | base_dir, file_name = os.path.split(clean_path) 33 | name, ext = os.path.splitext(file_name) 34 | target_path = os.path.join(base_dir, name + ".udatasmith") 35 | 36 | 37 | log.info("basedir %s", base_dir) 38 | use_diff = True 39 | backup_path = None 40 | if use_diff and os.path.isfile(target_path): 41 | log.info("backing up previous test") 42 | last_modification_time = os.path.getmtime(target_path) 43 | time_str = time.strftime('%Y%m%d_%H%M%S', time.localtime(last_modification_time)) 44 | backup_path = os.path.join(base_dir, "%s_%s.udatasmith" % (name, time_str)) 45 | log.debug("last modification was:%s", backup_path) 46 | shutil.copy(target_path, backup_path) 47 | 48 | log.info("Starting automated export") 49 | 50 | custom_args = {} 51 | custom_args["use_gamma_hack"] = False 52 | custom_args["apply_modifiers"] = True 53 | custom_args["export_animations"] = True 54 | custom_args["compatibility_mode"] = False 55 | custom_args["minimal_export"] = False 56 | custom_args["use_logging"] = True 57 | custom_args["use_profiling"] = False 58 | custom_args["write_metadata"] = False 59 | 60 | if "-benchmark" in sys.argv: 61 | custom_args["use_logging"] = False 62 | 63 | 64 | bpy.ops.export_scene.datasmith(filepath=target_path, **custom_args) 65 | log.info("Ended automated export") 66 | 67 | # right now this is not so useful as the export is non deterministic 68 | # i guess it is because the usage of dictionaries 69 | do_file_diff = True 70 | 71 | if "-benchmark" in sys.argv: 72 | do_file_diff = False 73 | 74 | # todo: if size is less than 2MB 75 | if backup_path and do_file_diff: 76 | log.info("writing diff file") 77 | import difflib 78 | 79 | with open(backup_path) as ff: 80 | from_lines = ff.readlines() 81 | with open(target_path) as tf: 82 | to_lines = tf.readlines() 83 | 84 | diff = difflib.unified_diff(from_lines, to_lines, backup_path, target_path) 85 | 86 | new_modification_time = os.path.getmtime(target_path) 87 | new_time_str = time.strftime('%Y%m%d_%H%M%S', time.localtime(new_modification_time)) 88 | diff_path = os.path.join(base_dir, "export_diff_%s.diff" % new_time_str) 89 | with open(diff_path, 'w') as diff_file: 90 | diff_file.writelines(diff) 91 | static_diff_path = os.path.join(base_dir, "export_diff.diff") 92 | shutil.copy(diff_path, static_diff_path) 93 | 94 | 95 | --------------------------------------------------------------------------------