Hello,
What are these white points on the walls around the girl? they seem to come from reflexions.
I already see that in the past on very reflective surfaces (posted few months ago), but I didn't have the problem in the same image in KC23.
A bit after at 170 passes, more and more white points
Below is the rendering with KC23. No white points.
Replies
Hi Al,
I'm sorry, I maybe never specify I got the white points almost immediately.
So I again tried the studette_stripped2 skp file you sent me.
I just removed all unusefull scenes. I alwys render "vue laterale nuit" one because the zoomed scenes RPS-1 and RPS-2 doesn't cause any problem.
I installed KF06, load render wizard, click on "Load factory defaults", then "test studette nuit" default file then render it.
After 29 passes, no white points. For me, it's too late compare to what I got on KE26.
So, I reinstalled KE26.
Load skp file and render wizard. click on "load factory defaults" the "test studette nuit" and render it.
At pass 2, white points appear already!!
So, there was no problem in KC23, problem in KE26, problem solved in KF06 !
I send you the archive with skp, jpgs saved at pass 2, 9 and 12 and default file.
Now the problem is solved it's ok but it should be interesting to know what happened anyway.
I'm rendering on I7-940, win 7 64 bits. Did you try to render on win 7 64 bits?
As nobody else came on that thread, it seems I was the only one concerned by the problem but, as I many times reproduced the problem with identified versions of iRender nXt, we could think the problem came from a specific version of, maybe, 64 bits libraries build.
Alain.
I am sorry this is taking so long. It is difficult for us to solve a problem if we cannot duplicate it.
I would appreciate your help in solving this. If I can every get it to fail with the latest version, then I can see if it worked with previous versions, and get the render developer to help see what might have changed.
I rendered the zipped batch file you sent with the latest version, then I downloaded version KE26.
I am unable to try any of the suggested fixes here unless I can get a model which fails.
They both rendered ok. I am including the image below after 1200 passes with the packet mode
At this point we can move in one or both of two directions:
1. You try using the "glossy material" and/or the "No Light Source Reflections" setting for the girl and back wall and see it that fixes things for you.
If that does not work for you, then I think we need to try to create a new model for testing.
2. For the new model (you could start with the model I sent you, which you said also failed):
a. Use an all new file name (e.g. white_points_problem)(It is getting confusing having so many files passed back and forth with similar names)
b. Make sure there are no accented characters in the SKP file name.
(I want to make that file names are not causing the problem)
c. Use the latest version of IRender nXt - current KF06
d. render the model, save a JPG from the rendering so I can use it to check the settings.
(When you save a .JPG we save the settings in the image file)
e. Stop the rendering as soon as it starts failing so I will know how many passes I should be testing.
f. Zip up the nXt_Batch file after rendering
g. Save the SketchUp model after rendering.
Send all 3 files to me - JPG, SKP and ZIP (or you can put the .JPG and .SKP into the same zip)
KE26 - 1200 passes - Packet Mode
Strange anyway because I got it also from the skp file you sent me, just selecting packet mode.
I think also that you don't get white points if you render the zoomed area (RPS-2 I think) but only if you render the whole scene.
Not initially.
I need to try rendering from your Batch Zip file to see if I can duplicate it using that,
Ok Al, but again, where does the rendering difference comes from between KC23 and KE26 because we can ensure now that the result is not the same with the same setting.
Normally packet mode and path tracer are supposed to give both a quite close result (ok maybe path tracer can be more precise ....) and that was the case until KC23, then with latest version, these dots appear so, I wonder if the actual result is really an expected behavior or not.Oops - You I had earlier asked:
And you responded:
But I failed to read the response correctly.
That changes everything, and means we should be using the Glossy and/or No Light Source Reflections mentioned above.
Packet Mode attempts to tun faster by grouping the pixels, light, etc. into "packets" but sometimes that creates artifacts such as you have seen.
One solution is to switch to the Path Tracer, and wait a long, long time. The other is to try some of the settings which have been added to help with this.
I will see if I can get the dots. (This should be much easier when I am using the proper engine), then I will try "No Light Source Reflections", the glossy setting, and/or both.
Alain Bonnefoy said:
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