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OK, I went back to basics and tried to just render a primitive (cube) with 1 reality light, tried with acceleration, open CL and no accelleration - all have the same issue "[2015-09-21 12:10:44 Severe error: 46] No light sources defined in scene; nothing to render.". I know it'll be well worth it when it's resolved, Paolo and Luxrender create fantastic products, but for now I'll agree with NDelphi, no point in rushing for the download :(
You have to make sure your video card supports open CL. No all do and the older nvidia cards are not so good. Newer ones in GTX serious work great. I have not been able to download reality 4.1 as I get server errors.
I can't get it to install without error notice from Win 7....and when I start up Daz....it crashes with the same error. I removed all the Reality folders and got DS working normally. The same with Poser.
I am curious, when installing Reality 4.1 are you getting an option to install or not to install the included LuxRender?
I just installed and it didn't give me an option to not install it. The only option was where to install Reality itself. Looking in the folder it appears that it installs Lux inside the Reality folder.
Now if only I could figure out how to get it registered so I could maybe use it. NM, it finally went through just took several minutes.
I'm on a mac and I don't remember seeing lux render option.
As for my experience so far, I can't seem to use openCL. I got an error when trying to use openCL and then "Extra Boost". So, I turned off the extra boost and reality crashed. Maybe it's not quite ready for prime time. The regular render seemed to work fine, I guess. It started to render, at least.
BTW, in case they see this, the error I'm getting is: [2015-09-21 08:27:06 Severe error: 2] RUNTIME ERROR: PathOCLBase kernel compilation error.
In order to use those new features you have to make sure that your CPU can handle them. I believe my CPU will not. It is older than 2009 2011 when those new features were introduced.
Here's a list of the CPUs that will work with the new LuxRender features:
https://en.wikipedia.org/wiki/Advanced_Vector_Extensions#CPUs_with_AVX
Update:
According to a post by Paolo at Runtime DNA a cpu with SSE3 should work, but that AVX is better.
https://en.wikipedia.org/wiki/SSE3#CPUs_with_SSE3
With iRay working so well (for me at least) this has to be a wait and see. A loooooong wait and see.
... but if anyone does manage to get it working in DAZ Studio I'd love to see some comparative timings Reality vs iRay for the same scene. That should be easy because Paolo has said that Reality 4.1 will convert iRay Shaders (I'm sure he said that ... somewhere).
LuxRender 1.5 with its new code is faster than iRay, by a lot. That much is clear. Paolo's own videos can testify to that.
Luxrender 1.5 works great.I've been using it from time to time with reality 4.0 for a few weeks now.The speed improvements are very nice.
I've not been able to get my upgrade to reality 4.1 just yet, the servers are down at the moment.So I can't test the iray shader conversion. :(
I'm sure that's what the video shows, but let's just wait and see what some side by side comparisons yield. I'm a believer in that old saying "If something sounds too good to be true ..."
Anyway, I'm open to be convinced - just not on my production machine.
I find it to be really good, OpenCL is good so is CPU with Boost, but have found how the lighting is set up makes a big difference with speed, (at least for me that is).. The way Lux 1.5 renders is a lot different compared to previous versions.. For me anyway instead of bringing up the whole scene it will do it bit by bit at the start and then go from there..
But the best thing is that Reality does some things a lot better than it used to.
My Reality 4.1 writes an empty LXS file, so Lux has nothing to render! The install seems to be OK, but I'll try to reinstall it again. I got my file from the servers here at DAZ 3D.
Is it necessary to uninstall prior versions of reality and luxrender before installing the new version? I still have R2.5 and 4 installed but haven't used either in a long time, and since the new version of luxrender is included with 4.1 do I still need the older version?
openCL is broken on Mac's, this is not a Reality or Lux issue but an Apple issue as they broke it & don't seem to be in any hurry to fix it
The User Guide ssays to change the name of the Reality folder in Program Files to Reality2, then do your new install.
That's what I did, it installed OK, I can use from inside DS, and it calls up the correct version of Luxrender, but it doesn't write anything to the LXS file
You wont need any older versions of Luxrender for this version of Reality, so you can get rid of them if you don;t use Lux for anything else.
I'd really like to see some side by side comparisons between IRAY, Reality 4.1 and DAZ Octane Render plugin. 21x faster sounds great but if it's still 2x slower than either IRAY or OcDS then that's not so great. I'm not saying Reality isn't faster but these speed figures only make sense when used in comparison.
Well, so far no go - my Reality 4.1 can only render using CPU apparently.. Sure it does seem faster than the previous version, but f that if it can't take advantage of my Titan X.
When I chose GPU (and it correctly identifies the Titan as OpenCL 1.2) it just opens the scene and starts rendering nothing (also says 0 devices).
I guess I have just been getting used to Iray "just delivering"..
The point, for many of us, is that IRay is very fast with the right GPU hardware but pretty slow in CPU mode. Now we have an option for fast renders without the expense of a new card. This is even more relevant for Mac users as it is not a simple matter to install a new card on an iMac - even if they would support NVidia cards.
I've downloaded and installed R4.1 but have not yet read through the new user guide for the correct settings. I'll be able to comment later on speed relative to the old R4 version with Lux 1.3 but not against IRay with a GPU (which I can't test).
Apple is never in a hurry to put out any fires they start but Apple told developers in July it would be fixed. I'm guessing El Capitan since blender devs are eluding to the beta to have remedied some of the Mac Open CL tools.
Not sure if I can call it progress, but after deleting the install and going through it again it seemed successful (came up with registration screen which the first attempt to install didn't), unfortunately it couldn't verify my license. Server issues I'm guessing so maybe it will work after another wipe/install. At lest now I remember why I preferred building computers to installing software
Have they delivered any documentation?
It'll be interesting to have feedback about CPU speed and for those of us with compatible GPU's to have a comparison with other unbiased renderers that also use GPU. There also appears to be a GPU + CPU mode and if that works and is faster than IRAY or OcDS then I'm sold. Even a 10% speed increase can cut hours off an animation render. That's why it's so important to me to have these comparisons because even small improvements in speed translate to time/energy saved during a long render.
Works on my 980ti, which is largely the same as the Tx. It can take a little while for the render to start showing (openCL, with and without extra boost ticked, GPU only selected) Having a bunch of issues with it, but it does basically work
The video shows it being a lot faster than Reality 4.0/lux 1.3. I'm not at all convinced its advantages over iRay (and I'm sure there are plenty) are in the speed arena on semi decent nvidia hardware at least
What kind of magic is this?! A CPU render faster than a GPGPU render?!
With iray big difference renders on my Nvidia machine 15 minutes same on AMD machine over 2 hours..
Yup, it's down here for me too. I guess wait a day or something................
Same here...
My CPU is Intel(R) Core™ i7-5820K Six-Core 3.30GHz 15MB Intel Smart Cache LGA2011-V3 but have no idea where to look to see if the specs are Sandy or Haswell or what ever...