Pushed one more branch, cycles_texture_cache this time. Again, work in progress that has been developed for Tangent Animation. CPU only, it’s using OpenImageIO’s TextureSys directly. Unfortunately, it comes with a certain performance hit that I’m hoping to reduce further or maybe even eliminate. In exchange, it allows for rendering a large number of large sized textures in a pre-defined modest memory footprint.
This, the Embree branch and the Cryptomatte branch are features that I would hope to eventually merge into master (2.8?) once they’re stable, feature complete and reviewed. -Stefan > On 27. Nov 2017, at 15:43, Stefan Werner <stew...@gmail.com> wrote: > > Hi everyone, > > I pushed a new branch to git.blender.org <http://git.blender.org/> yesterday, > cycles_embree. As the name says, this is an integration of the Embree > raytracing kernel into Cycles*. If you are interested in building it, you > will need version 2.16.1 or newer of Embree, built with EMBREE_RAY_MASK=ON. > To avoid self-shadowing with hair, a slightly patched version of Embree is > necessary which you can find here: > https://github.com/skwerner/embree/tree/cycles_compatible > <https://github.com/skwerner/embree/tree/cycles_compatible> > > For now, this is a CPU only feature, and the real benefits from using Embree > come into play with scenes using deformation motion blur. Small or static > scenes don’t benefit much. Be aware that that not everything renders 100% > identical to regular Cycles when enabling Embree: Object motion blur in > Embree does not do arc interpolation but only straight linear motion. Curve > and line intersections use a different algorithm and therefore render to a > slightly different shape. > > This branch is still a work in progress - the last few (hopefully just a few) > bugs are being ironed out, there are still some known instabilities and > memory being wasted. I’m in touch with the Embree authors to see if/when we > can use a version of Embree without Cycles specific patches and still get > identical results to plain Cycles. It should certainly be possible to use > Embree’s BVH data and traverse it in OpenCL and CUDA to get fast deformation > blur on GPUs too, but that is still a task I haven’t tackled yet at all > (volunteers are welcome). > > -Stefan > > * As announced in my BCONF17 talk: > https://www.youtube.com/watch?v=_2Ia4h8q3xs > <https://www.youtube.com/watch?v=_2Ia4h8q3xs> _______________________________________________ Bf-committers mailing list Bf-committers@blender.org https://lists.blender.org/mailman/listinfo/bf-committers
