The flex interpolation stiffness matrix within the implicit/implicitfast solvers is now built and factorized in a banded format instead of a dense one. This involves:
- Calculating the bandwidth based on the sparsity of the mass/damping matrix and the connectivity within flex cells.
- Allocating and populating a banded matrix `H`.
- Using `mju_cholFactorBand` and `mju_cholSolveBand` for factorization and solving.
This change improves performance for flexes with many DOFs but local coupling.
PiperOrigin-RevId: 901297952
Change-Id: I3efe06353d1903ea65ab30dc49685cede228bb68
This change introduces a `flex_cellcount` field to `mjModel` to specify the number of cells in each dimension for interpolated flexes. The stiffness computation, passive force calculation, and Jacobian derivatives are updated to operate on a per-cell basis, significantly improving performance by localizing computations to the nodes within each cell.
PiperOrigin-RevId: 901216393
Change-Id: Ic23132e609de11e71bb7fef8d1f139daad2ec264
Allows the Renderable to update its own MaterialInstances whenever
Material textures or parameters are modified. Each Renderable now
also knows how it is intended to be used (i.e. scene objects or ux)
which allows it to correctly pick the underlying filament::Material
to use.
PiperOrigin-RevId: 901161990
Change-Id: Ic280731d39c272c50d6ad100cec7116e683cbc79
* Ensure compiler.usethread=0 is set before compilation in single-threaded WASM builds
* Explicitly enable exceptions for the single-threaded WASM module
* Test the single-threaded module in addition to the multi-threaded module in internal and external CI
* Consolidate wasm/tests/CMakeLists.txt into wasm/CMakeLists.txt, fixing the single-threaded benchmark test build which was missing shared linker flags
PiperOrigin-RevId: 901149728
Change-Id: If4946e29e5116610782d218906cf3f5940c1cdd0
ObjectManger now manages low-level filament Texture and
Material objects directly. Moves the IBL Texture to the
SceneBridge class.
PiperOrigin-RevId: 900626110
Change-Id: Idd39464bfb324188dd54975a500954d4ebb29006
The top-level CMakeLists.txt unconditionally added -pthread for all Emscripten builds, but PTHREAD_POOL_SIZE was only set when MUJOCO_WASM_THREADS=ON. This gave the ST build a live pthread runtime with zero pre-spawned workers, causing CompileMeshesAndTextures to deadlock when it tried to spawn a ThreadPool on the main thread.
Fix by making -pthread conditional on MUJOCO_WASM_THREADS. Without -pthread, hardware_concurrency() returns 0 and the existing nthread < 2 guards naturally select the serial compilation path.
PiperOrigin-RevId: 900191420
Change-Id: I0481b81fc6f7cccb52c7d7592dcf9dd317b5bad1
This change introduces `nflexstiffness` and `flex_stiffnessadr` to allow flex stiffness matrices to have sizes other than the fixed 21 per element. Higher-order flexes can now store larger stiffness matrices based on their number of nodes. The `flex_stiffnessadr` array provides the starting index for each flex's stiffness data within the `flex_stiffness` array.
PiperOrigin-RevId: 899632263
Change-Id: Ie49182c46c3777acf0c6b492345edfcf62fb5e44
Use an unlit material for decorative elements and do not render them
in the reflection pass.
PiperOrigin-RevId: 899560291
Change-Id: I3b035d556432c850ce8240e0c4c4c2d6645d7bf2
Instead, use a set of functions to create/update a Renderable
from an mjvGeom.
This completely isolates mjvScene/mjvGeom from SceneView,
making SceneView a more general purpose class.
PiperOrigin-RevId: 899475268
Change-Id: I48a3a45bc8fff3e1f514847c7a1ca8ab3a1ff16e
*** Original change description ***
Add protocols for authoring simulation environments. This is for preview only, we discourage users from using this in production code.
PiperOrigin-RevId: 899425542
Change-Id: Ifb6c5d3b762789d821bfa9826f5d6d983e8af7d3
This is an early upload of https://github.com/google/filament/pull/9867 and necessary material changes
Original PR commits:
FL0 materials are always compile via spirv-cross
postfx materials now support sRGB emulation in FL0
PiperOrigin-RevId: 899262890
Change-Id: I52c002d60790d84269674c1f0d0c5f7d6a58000c
This default forces users to use the `spec.assets` dictionary or to do other filepath gymnastics when loading URDF. Instead we encourage users to just modify file paths directly if necessary.
PiperOrigin-RevId: 899009853
Change-Id: I4bb84606a95b65be79ccc77ccbe78062d6de8773
Split up the Update function into parts and allow SceneBridge
to call them individually, passing in the ModelObjects or
ObjectManager as needed.
PiperOrigin-RevId: 898851732
Change-Id: I25c6bf920b85caa7b2ddee045475f11fb7a8bac8
This change disallows calling `mjs_delete` on an mjSpec that has been attached to another mjSpec via `mjs_attach`. Attempting to delete an element from an attached spec will now result in an error. The Python bindings for `mjSpec.delete` have been updated to raise a ValueError when this occurs.
PiperOrigin-RevId: 897266695
Change-Id: Ic0670125a3028191ec50eca890f02b5910ec8b03
This removes the need to load these decoders via mj_loadAllPluginLibraries when using MuJoCo built with CMake. Other plugins are unchanged.
PiperOrigin-RevId: 897114719
Change-Id: Iee914cc5e05798186f384a67901f1cf86bc2f887
- Remove `lugre:viscous`, should now be added directly to actuator `damping`. Trying to do this for the user was incompatible with default inheritance (compounding instead of overriding).
- Move voltage limiting from the `saturation` to the `controller` attribute.
- Fix indexing issues in default inheritance.
PiperOrigin-RevId: 897087642
Change-Id: I5388c2633e15c7e223992e7eb5d6a28db75a6438
Taylor Howell