Commit Graph

1826 Commits

Author SHA1 Message Date
Haroon Qureshi fe16255602 Add mjz support to studio.
PiperOrigin-RevId: 861627355
Change-Id: Iafd291965ca78d03fdc1efe0e40dabcd4f2dacc4
2026-01-27 03:22:58 -08:00
Haroon Qureshi 32a4412e2b First-pass implementation of a spec loader for zipped assets.
PiperOrigin-RevId: 861625990
Change-Id: I65cf601cd9aa3aab4915a5a247dda00a6a9aa3db
2026-01-27 03:18:30 -08:00
Haroon Qureshi e43ed60d29 Allow GUI to be rendered to texture as well.
Update SetFrameBuffer to allow users to customize which swap chain
(window or offscreen) to use for rendering both the main mjvScene
as well as the GUI.

PiperOrigin-RevId: 861624061
Change-Id: Ife7bfc447afb007016300438fc5f88a8e4cfa0f6
2026-01-27 03:12:05 -08:00
Haroon Qureshi 0ddbb46fa1 Refactor mjVFS and resource management.
Resource operations (e.g. mju_openResource, mju_readResource, and
mju_closeResource, etc.) are now all handled by a VFS instance. It
is now up to the VFS to determine which provider to use in order to
handle those operations.

This allows us to dynamically add/remove (aka "mount") providers to
a VFS to handle special requests. mj_addFileVFS and mj_addBufferVFS
have been reimplemented as two such use-cases. Moreover, we expose
the mounting behaviour with two new functions: mj_mountVFS and
mj_unmountVFS.

PiperOrigin-RevId: 861550939
Change-Id: I070eb4bcc2982466c8f368f7918005538baa5185
2026-01-26 23:53:29 -08:00
Haroon Qureshi bdb553ff8a Add a ModelPlugin that can be used to load and update models.
PiperOrigin-RevId: 861077626
Change-Id: I3ef4989cfbfff3632c5915c00ebda1e7a48716e8
2026-01-26 01:24:43 -08:00
Alessio Quaglino e933081ff1 Optimize flexvert Jacobian computation.
The dense Jacobian arrays `J0_dense` and `J1_dense` are now zeroed only once before the vertex loop. Inside the loop, only the entries that were actually used are zeroed out after being added to the sparse Jacobian, allowing for efficient reuse of the dense arrays across all vertices.

PiperOrigin-RevId: 860799056
Change-Id: Ia61daae5eeb2f4dbc0c5d8c0064622a881e92b7a
2026-01-25 05:22:44 -08:00
Alessio Quaglino e9c61694e1 Align flex_vert0 to the XY plane during model initialization if dim=2.
PiperOrigin-RevId: 860435368
Change-Id: Ida616e1e69c224f7c0dbad2a10dd59e64cbadf49
2026-01-24 00:50:01 -08:00
Alessio Quaglino 769109630f Move flexvert_J and flexedge_J sparsity pattern to mjModel.
PiperOrigin-RevId: 860392796
Change-Id: Ie1264f2df5bf04b5794a3c7d8ad1a92524a6a567
2026-01-23 22:00:14 -08:00
Alessio Quaglino 7da271c687 Add vertex equality option.
PiperOrigin-RevId: 860299454
Change-Id: I7befd8e5f4c8bac6d74684a96a9cc3cee9ae1e29
2026-01-23 16:30:05 -08:00
Yuval Tassa a5de40b400 Replace mjtSize with size_t for size calculations in engine.
Use unsigned size_t instead of signed mjtSize for size multiplications to avoid Clang's overflow-checking intrinsic. This is semantically correct as size calculations are inherently unsigned.

PiperOrigin-RevId: 860213177
Change-Id: I837aa6556335478969d4977492d0f231419f020a
2026-01-23 12:35:13 -08:00
Yuval Tassa 68537e1e32 Replace mjtSize with size_t for size calculations.
Use unsigned size_t instead of signed mjtSize for size multiplications to avoid Clang's overflow-checking intrinsic. This is semantically correct as size calculations are inherently unsigned.

PiperOrigin-RevId: 860172221
Change-Id: I3b6cb720db8771b8f266f1927e2980ac7514538b
2026-01-23 10:51:43 -08:00
Yuval Tassa 30b903b6c0 Migrate mjModel size fields from int to mjtSize.
This change updates all size-related members within the `mjModel` struct from `int` to `mjtSize`. This allows MuJoCo to handle models with a larger number of elements. Corresponding changes were made to macros, function signatures, and I/O routines to accommodate the new `mjtSize` type.

PiperOrigin-RevId: 860144595
Change-Id: I701c6d607715d240766b6210a9773cd9e4258c59
2026-01-23 09:41:49 -08:00
Sam Haves 2582a83ac3 Add equalityJointAPI to mjcPhysics.
PiperOrigin-RevId: 860081702
Change-Id: Ifd961dcb2a8e0f5d885e9e9dadc0153b03cb5f4d
2026-01-23 06:28:29 -08:00
Haroon Qureshi bab468703c Display error message when requested file does not exist.
PiperOrigin-RevId: 859583121
Change-Id: Id9969e486499a70769e325161c3cd2c204006d9a
2026-01-22 06:34:35 -08:00
Matija Kecman 98593259e7 Internal change
PiperOrigin-RevId: 859578296
Change-Id: If4dd4ca68ab9750693e5f6ff20ea0c78d6b93464
2026-01-22 06:20:47 -08:00
Alessio Quaglino 54dd623650 Add vertex-based flex constraints (dim=2).
PiperOrigin-RevId: 859552050
Change-Id: I61d4b9dc40f041c5b930e5f8810a803e8bccb87a
2026-01-22 04:54:53 -08:00
Haroon Qureshi 2cc2e579f1 Refactor model loading APIs.
There are three ways to load a model: from a file, from a buffer, or an
"empty" model. Instead of overloading a single function to do all three,
provide three separate functions.

Also disable model loading functions that will not work for emscripten.

PiperOrigin-RevId: 859051341
Change-Id: I71557d31d0e7c9c6882895c36116d300f19e255d
2026-01-21 05:25:08 -08:00
Haroon Qureshi e2180ff744 First-pass of a plugin system for GUI elements.
Refactor filament's debug drawing to be one such plugin.

PiperOrigin-RevId: 859002002
Change-Id: Ibe9000dec19fce648eef6d57170ce435b9a8c6ff
2026-01-21 02:47:09 -08:00
Haroon Qureshi bf05bb1885 Make quit button work.
PiperOrigin-RevId: 858624789
Change-Id: Ibdd572b60273424f3b7e9bb6a9d117d2a0538227
2026-01-20 09:28:48 -08:00
Haroon Qureshi a0accc493a Fix camera select logic.
PiperOrigin-RevId: 858599199
Change-Id: I25f1a74ac145c73bb225d6df8e86aa82d88ebb4b
2026-01-20 08:18:29 -08:00
Haroon Qureshi de47cf0e6f Don't mipmap sRGB textures.
PiperOrigin-RevId: 858148054
Change-Id: Ic115b7431901549e1c636eb20414641c37cf3e8a
2026-01-19 05:26:27 -08:00
Matija Kecman 654b393060 Add a boxing utility which can surround a bunch of UI and render it in a box.
The ImGui table API cell padding variables can be used to adjust the positioning of the UI in the box.

PiperOrigin-RevId: 858137824
Change-Id: I1ce1519c0abd67bc5fafc30f9a18dfcf18c2a313
2026-01-19 04:48:50 -08:00
Haroon Qureshi 77d1ac10fe Fix scaling issues on HDPI monitors.
PiperOrigin-RevId: 857024487
Change-Id: I7d3db9ff754374053bcd33ba93c7466253afb58c
2026-01-16 01:17:38 -08:00
Sam Haves c08e1d9e6e Add MjcEqualityAPI as a base class for MuJoCo constraints and MjcEqualityWeldAPI for representing weld constraints.
This change introduces two new USD API schema:
* MjcEqualityAPI - base API for representing MuJoCo equality constraints in USD, this will typically be applied to joints such as UsdPhysicsFixedJoint.
* MjcEqualityWeldAPI - extends MjcEqualityAPI for MuJoCo's weld equality constraints with an attribute for torqueScale.

The usd_decoder is updated to parse UsdPhysicsFixedJoints and convert the new schema attributes into the appropriate mjsEquality data fields.

PiperOrigin-RevId: 856723634
Change-Id: I0982fd3168b643f8e91d87bb5ae5933e526b63a1
2026-01-15 10:44:27 -08:00
Haroon Qureshi c92746641d Implement picture-in-picture mode.
Adds a new window that allows the user to display one or more renders from
the different cameras in the scene.

PiperOrigin-RevId: 856607089
Change-Id: I7268ffd3ef62b9b4d62ce8d004fdbbec92b42af4
2026-01-15 04:42:27 -08:00
Sam Haves d816b38f4c mjcPhysics MjcTendon path now has an indices attribute to allow repeated sites in tendon path.
Since relationships in USD can only contain a single instance of a path, it was previously impossible to have a tendon path that visits the same wrap target more than once. This is a fairly common occurence when dealing with tendons that have pulleys.

With this change, if mjc:path:indices is not defined then the behaviour is as it was and the mjc:path is considered to be ordered. If it is authored then the parser will use the indices into mjc:path as the order. This mirrors other similar concepts in USD such as face vertex indices.

PiperOrigin-RevId: 856339887
Change-Id: I6b9503973de377acdb0689be168c16e4aa19b70b
2026-01-14 13:24:28 -08:00
Haroon Qureshi 42c565d860 Use a dedicated swap chain for offscreen rendering.
PiperOrigin-RevId: 856320260
Change-Id: I3076827baf075282651e4308db74b163a5709935
2026-01-14 12:31:54 -08:00
Alessio Quaglino e56b31e98f Reduce flexedge_J size from nflexedge x nv to the effective sparse size.
PiperOrigin-RevId: 856290141
Change-Id: Ide297d1b6f0e3aa07e3e20bf9ab44b6501097695
2026-01-14 11:18:41 -08:00
Google DeepMind cbc1136502 Roll back VFS refactor due internal breakages
PiperOrigin-RevId: 856273160
Change-Id: I4097e05ed4e48ebee05b4347d0f227d4f39c1b09
2026-01-14 10:38:29 -08:00
Haroon Qureshi 5a7abfe8a0 Set cleared memory back to nullptr.
PiperOrigin-RevId: 856188793
Change-Id: Iab33171b07f0d2a48d19986e145b832d1037d596
2026-01-14 06:38:45 -08:00
Yuval Tassa f3ad0eff2b Fix body category check for mocap body descendants in visualization.
PiperOrigin-RevId: 856179240
Change-Id: I29f4758fee0ff3b16d0b9f452c28e640b5558993
2026-01-14 06:06:55 -08:00
Haroon Qureshi d387578783 Refactor mjVFS and resource management.
Resource operations (e.g. mju_openResource, mju_readResource, and
mju_closeResource, etc.) are now all handled by a VFS instance. It
is now up to the VFS to determine which provider to use in order to
handle those operations.

This allows us to dynamically add/remove (aka "mount") providers to
a VFS to handle special requests. mj_addFileVFS and mj_addBufferVFS
have been reimplemented as two such use-cases. Moreover, we expose
the mounting behaviour with two new functions: mj_mountVFS and
mj_unmountVFS.

PiperOrigin-RevId: 856166919
Change-Id: Id723d612ffc0bff020705cf19ef95fbf24676840
2026-01-14 05:19:57 -08:00
Yuval Tassa 218226fc95 Breaking change: Add surface normal output to MuJoCo raycast functions.
PiperOrigin-RevId: 855781592
Change-Id: Id96b1ca7eaf722e260cc69d7706c28dc51f52d92
2026-01-13 10:22:21 -08:00
Alessio Quaglino a49576e469 Move flexedge sparse Jacobian indices to mjModel.
PiperOrigin-RevId: 855718305
Change-Id: Ic136f4efa6735b934288f65c332d71ee8b0f6da5
2026-01-13 07:33:17 -08:00
Haroon Qureshi 071cb83fe7 Strip the prefix correctly.
PiperOrigin-RevId: 855297807
Change-Id: Ic182f64c451077386fdba8bfe34e8da6364b9f60
2026-01-12 10:59:20 -08:00
Sam Haves 7e45bbb51c Add urdf file extension case to mj_parse.
fixes #3004

PiperOrigin-RevId: 855249634
Change-Id: I6c21d0ada4fe482059f64e96d413796f5c1c66ce
2026-01-12 08:59:00 -08:00
Yuval Tassa 1cda1e7a8c Prevent degenerate body inverse weights in constraints.
Fixes #2472

PiperOrigin-RevId: 855223971
Change-Id: I646207f82353b7099aab9e220888fe11a4cd3d6d
2026-01-12 07:43:14 -08:00
Haroon Qureshi cb9a9c159c Remove getdir from mjpResourceProvider.
All known implementations were effectively the same as the default fallback. It was just adding unneeded complexity. Removing this now will help with upcoming improvements to resource providers.

PiperOrigin-RevId: 855163273
Change-Id: I529fc18d0d03a8dc676c909ec9e4b1da1454d414
2026-01-12 04:07:42 -08:00
Sam Haves 8abedf263e Add checks for nullptr content_type and extension in mjpDecoder registration.
PiperOrigin-RevId: 854365689
Change-Id: I025f5ab844dd4cf19f7d5f223430e27fd23a0924
2026-01-09 15:32:23 -08:00
Sam Haves a5dc57c0c3 Move OpenUSD parsing to usd_decoder
Add usd_decoder to mujoco/plugin.
  - Previously was src/experimental/usd/usd_to_mjspec.cc, now that same spec is returned by the plugin.

PiperOrigin-RevId: 854350962
Change-Id: Ia980190a557c50ce8197980922a2594b613859b4
2026-01-09 14:48:29 -08:00
Sam Haves 64a2345c07 Fix usethread check to enable multithreaded mesh compilation.
PiperOrigin-RevId: 854260636
Change-Id: I18d1f47a1ef7f8abcce14e0351b9523fbbac8be6
2026-01-09 11:00:17 -08:00
Haroon Qureshi 9e9314a4a4 Ensure parsing always has a valid VFS.
Explicitly free allocated memory for local resources. (Upcoming
changes to `mju_closeResource` will not work for local resources.)

PiperOrigin-RevId: 854254013
Change-Id: I5cbb8264b590327767d5500f0c2a32ebe036bc4f
2026-01-09 10:45:48 -08:00
Haroon Qureshi 45e164bf8f Refactor 'ParseXML' and 'ParseSpecFromString' to use a shared helper function.
This allows us to remove the special "LoadModelFromString" resource provider.

PiperOrigin-RevId: 854207845
Change-Id: I6d00f2ab99b4351866e1d39dbeed96f29aaaf915
2026-01-09 08:40:40 -08:00
Haroon Qureshi 398e3dcf15 Use mj_parseXMLString instead of a test-specific LoadFromModelString.
This removes the need for a custom mjResourceProvider, but does require
reimplementing part of mj_loadXML in the fixture.

PiperOrigin-RevId: 854170820
Change-Id: Ib455cc5cdb5138213eb7e996dc32ac156f22a859
2026-01-09 06:34:27 -08:00
Haroon Qureshi 2c4f710cf4 Ensure resource providers are correctly initialized.
PiperOrigin-RevId: 854095105
Change-Id: I028265d7f51e6ab178f4f3a1d801ba773093214f
2026-01-09 02:07:24 -08:00
Sam Haves 2f2f9a30ba When loading models use mj_parse instead of mj_parseXML, and allow non-xml file types.
PiperOrigin-RevId: 853730923
Change-Id: I1c107daafd558bedb99338779c8174ee3e4d07e2
2026-01-08 07:22:51 -08:00
Yuval Tassa 1f4bb39b53 Fix typo in comment.
PiperOrigin-RevId: 853703158
Change-Id: Ic123f9273b99eeede1d76d3da20b5b5e9f898dcd
2026-01-08 05:56:29 -08:00
Haroon Qureshi 765bd54c7c Move GlobalModel class and functionality into its own file.
We'll need some of this functionality for tests.

PiperOrigin-RevId: 853652149
Change-Id: Ib924d886b73784a0f370285e0b82b2ed833e3e77
2026-01-08 03:08:12 -08:00
Yuval Tassa 8f5eb1e4f4 Improve bounds checking in engine_util_solve.c.
Add checks to ensure `snprintf` does not write beyond the allocated log buffer size, preventing buffer overflows.

Fixes #2661, #2673

PiperOrigin-RevId: 853643867
Change-Id: Ibdc47810158466dc961767284ac297df98916dac
2026-01-08 02:44:38 -08:00
Yuval Tassa 608115ab95 Add output attribute to camera elements.
This attribute allows specifying the intended output types (e.g., RGB, depth, normal) for each camera in the XML. The output types are stored as bit flags in `mjModel`.

PiperOrigin-RevId: 853316261
Change-Id: I1ad2e94102593cf402756f8f4c80509371ca86d2
2026-01-07 10:22:27 -08:00