v3.4.1

Changes in this version:

• Upgrade Dr.Jit to v0.4.4

  • Solved threading/concurrency issues which could break loading of large scenes or long running optimizations

• Scene's bounding box now gets updated on parameter changes 97d4b6a

• Python bindings for mi.lookup_ior d598d79

• Fixes to mask BSDF when differentiated ee87f1c

• Ray sampling is fixed when sample_border is used c10b87b

• Rename OpenEXR shared library 9cc3bf4

• Handle phase function differentiation in prbvolpath 5f9eebd

• Fixes to linear retarder 8033a80

• Avoid copies to host when building 1D distributions 825f44f .. 8f71fe9

• Fixes to linear retarder 8033a80

• Sensor's prinicpal point is now exposed throught m̀i.traverse() f59faa5

• Minor fixes to ptracer which could result in illegal memory accesses 3d902a4

• Other various minor bug fixes

v3.4.0

Changes in this version:

• Upgrade Dr.Jit to v0.4.3
• Add mi.variant_context(): a Python context manager for setting variants 96b219d
• Emitters may now define a sampling weight 9a5f4c0
• Fix bsplinecurve and linearcurve shading frames 3875f9a
• Add implementation of LargeSteps method for mesh optimizations (includes a new tutorial) 48e6428 .. 130ed55
• Support for spectral phase functions c7d5c75
• Additional resource folders can now be specified in mi.load_dict() 66ea528
• BSDFs can expose their attributes through a generic eval_attribute method cfc425a .. c345d70
• New sdfgrid shape: a signed distance field on a regular grid 272a5bf .. 618da87
• Support for adjoint differentiation methods through the aov integrator c9df8de .. bff5cf2
• Various fixes to prbvolpath 6d78f2e, a946691 , 91b0b7e
• Curve shapes (bsplinecurve and linearcurve) always have back-face culling enabled 188b254 .. 01ea7ba
• Properties can now accept tensor objects, currenlty used in bitmap, sdfgrid and gridvolume d030a3a
• New hair BSDF shading model 91fc8e6 .. 0b9b04a
• Improvements to the batch sensor (performance, documentation, bug fixes) 527ed22 .. 65e0444
• Many missing Python bindings were added
• Other various minor bug fixes

v3.3.0

Changes in this version:

• Upgrade Dr.Jit to v0.4.2
• Emitters' members are opaque (fixes long JIT compilation times) df940c1
• Sensors' members are opaque (fixes long JIT compilation times) c864e08
• Fix cylinder's normals d9ea8e8
• Fix next event estimation (NEE) in volume integrators a71b946
• mi.xml.dict_to_xml now supports volumes 15d63df
• Allow extending AdjointIntegrator in Python 15d63df
• mi.load_dict() is parallel (by default) bb672ed
• Upsampling routines now support box filters 64e2ab1
• The Mesh.write_ply() function writes s, t rather than u, v fields fe4e448
• All shapes can hold Texture attributes which can be evaluated f6ec944
• Radiative backpropagation style integrators use less memory c1a9b8f
• New bsplinecurve and linearcurve shapes e4c847f .. 79eb026

v3.2.1

Changes in this release:

• Upgrade Dr.Jit to v0.4.1
• Film plugins can now have error-compensated accumulation in JIT modes afeefed
• Fix and add missing Python bindings for Endpoint/Emitter/Sensor 8f03c7d
• Numerically robust sphere-ray intersections 7d46e10 .. 0b483bf
• Fix parallel scene loading with Python plugins 93bb99b
• Various minor bug fixes

v3.2.0

Changes in this version:

• Upgrade Dr.Jit to v0.4.0
  • Various bug fixes
  • Stability improvements (race conditions, invalid code generation)
  • Removed 4 billion variable limit
• Add missing Python bindings for Shape and ShapePtr bdce950
• Fix Python bindings for Scene 4cd5585
• Fix bug which would break the AD graph in spectral variants f3ac81b
• Parallel scene loading in JIT variants 48c14a7 .. 187da96
• Fix sampling of hg PhaseFunction 10d3514
• Fix envmap updating in JIT variants 7bf132f
• Expose PhaseFunction of Medium objects through mi.traverse() cca5791

v3.1.1

• Fixed maximum limits for OptiX kernel launches a8e698

v3.1.0

New features

• Enable ray tracing against two different scenes in a single kernel df79cb
• Make ShapeGroup traversable and updatable e0871a
• Enable differentiation of to_world in instance 54d2d3
• Enable differentiation of to_world in sphere, rectangle, disk and cylinder f5dbed .. b5d8c
• Enable differentiation of to_world in perspective and thinlens ef9f55 .. ea513f
• Add BSDF::eval_diffuse_reflectance() to most BSDF plugins 59af88
• Add mi.OptixDenoiser class for simple denoising in Python 13234 .. 55293
• envmap plugin can be constructed from mi.Bitmap object 9389c8

Other improvements

• Major performance improvements in cuda_* variants with new version of Dr.Jit
• Deprecated samples_per_pass parameter 8ba85
• Fix rendering progress bar on Windows d8db80
• obj file parsing performance improvements on Windows 28660f
• Fix mi.luminance() for monochromatic modes 61b95
• Add bindings for PluginManager.create_object() 4ebf70
• Fix SceneParameters.update() unnecessary hash computation f57e74
• Fix numerical instabilities with box filter splatting 2d8976
• Improve math::bisect algorithm 7ca09a
• Fix syntax highlighting in documentation and tutorials 5aa271
• Fix Optimizer.set_learning_rate for int values 53143d
• Various minor improvements to the Python typing stub generation b7ef349 .. ad72a53
• Minor improvements to the documentation
• Various other minor fixes

v3.0.2

Changes in this patch:

• Change behavior of <spectrum ..> and <rgb ..> tag at scene loading for better consistency between *_rgb and *_spectral variants [f883834]
• Polarization fixes [2709889], [06c2960]
• Add PyTorch/Mitsuba interoperability tutorial using dr.wrap_ad()
• Fix DLL loading crash when working with Mitsuba and PyTorch in Python [59d7b35]
• Fix crash when evaluating Mitsuba ray tracing kernel from another thread in cuda mode. [cd0846f]
• Add stubs for Float, ScalarFloat and other builtin types [8249179]
• Plugins regular and blackbody have renamed parameters: wavelength_min, wavelength_max (previously lambda_min, lambda_max) [9d3487c]
• Dr.Jit Python stubs are generated during local builds [4302caa8]
• Minor improvements to the documentation
• Various other minor fixes

v3.0.1

Changes in this patch:

• Various minor fixes in documentation
• Added experimental batch sensor plugin [0986152]
• Fix LD sampler for JIT modes [98a8ecb]
• Prevent rebuilding of kernels for each sensor in an optimization [152352f]
• Fix direction convention in tabphase plugin [49e40ba]
• Create TLS module lookup cache for new threads [6f62749]

Initial Release (v3.0.0)

This is the first public release of Mitsuba 3.