v1.57.0

Major changes

• Add support for iridescence by @GSterbrant in #4632
• USDZ Exporter by @mvaligursky in #4638 #4646 #4668
• Output treeshakeable module builds by @slimbuck in #4601

New features

• Physically based camera by @GSterbrant in #4585
• Physically based light units by @GSterbrant in #4618
• Pass area lights LUT directly by @yak32 in #4643
• Add glTF exporter by @willeastcott in #3366
• Added changeScene API by @yaustar in #4626
• Adds a texture mapping allowing us to combine sampler uniforms by @GSterbrant in #4636
• Small updates to improve WebGPU implementation by @mvaligursky in #4599
• Added CC-BY-4.0 licences to asset viewer example by @yaustar in #4610
• Add the XXXMapTint and XXXMapVertexColor to the removed material parameters list by @GSterbrant in #4567
• Use better defaults for physically based camera parameters by @GSterbrant in #4617
• Only add the shared sampler if the chunk uses the $SAMPLER macro. by @GSterbrant in #4669 #4674 #4681
• Partial support for texture formats on WebGPU by @mvaligursky in #4622
• Expose lightmapper chunks by @slimbuck in #4648
• Additional flexibility for Morph targets by @mvaligursky in #4662
• Small improvements to physical lights units example by @mvaligursky in #4679
• Revert enabling image bitmap by @slimbuck in #4596
• Test for ImageBitmap support at startup by @slimbuck in #4598

Fixes

• Fix missing chunk deprecations and updates. by @GSterbrant in #4592
• Make sure we create a grab pass buffer if no source is present by @GSterbrant in #4593
• Fix using fresnel incorrectly with lightmaps. by @GSterbrant in #4594
• Fix sheen glossiness and colour not getting applied correctly by @GSterbrant in #4619
• Fix bug where sheen wasn't appropriately layered by @GSterbrant in #4629
• Fix energy preservation for clear coat by @GSterbrant in #4630
• Fix refraction bug by @GSterbrant in #4631
• Disable use of specularity factor if non-metalness workflow is used. by @GSterbrant in #4640
• Lint fixes to UsdzExportExample by @mvaligursky in #4646
• Fix lightmap chunk sampler by @slimbuck in #4652
• Fix vector subtraction comments by @ninito-ph in #4654
• Fixed issue (#3733) that prevents XR from working in certain circumstances by @Clicky02 in #4517
• Unset deleted render target by @slimbuck in #4655
• Fix unpacking of msdf markup params by @NewboO in #4600
• Clear coat fresnel fix by @GSterbrant in #4657
• [Fix] Fixed Webgl’s shader handling of lost context by @mvaligursky in #4658
• Resolve render target before generating mips by @slimbuck in #4661
• [Fix] Engine examples readme file specifies how to build the thubmnails by @mvaligursky in #4663
• Fix typo in cloneSkinInstances to avoid double allocations by @mvaligursky in #4664
• GLB parser - check for empty curveData path arrays by @ellthompson in #4665
• Fix screen-space UI not receiving events in AR mode. by @jpauloruschel in #4667
• Fix chunk decode calls by @slimbuck in #4670
• Fix warning for our GLB chunks not using the right API version by @GSterbrant in #4671
• Use prefiltered cubemap format and type by @slimbuck in #4672
• ElementDragHelper: Fix drag NaN by @kungfooman in #4666

New Contributors

• @ninito-ph made their first contribution in #4654
• @Clicky02 made their first contribution in #4517

Full Changelog: v1.56.0...v1.57.0