How to render extra huge output image without

6/6/13 nomeradona ...: Tutorial: How to render extra huge output image without crashing in VraySketchUp
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Thursday, 4 August 2011
Tutorial: How to render extra huge output image without
crashing in Vray SketchUp
I have encountered these following questions "My client wanted me to print A0 size paper with nice quality, how
can I do it?" Today I receive this from one of the follower with my Nomeradona Facebook page "Nomeradona, I am
working on a Google SketchUp 3D Floor Plan, and trying to Render it in Vray. I am able to Render it at (800x600),
but I run out of ram, when I tried to output the (4000x3000 dpi) file size. Are there any tricks you can recommend to
reduce the file size or increase rendering optimization?"
In this case, what shall we do? The good news is there is a very simple solution in Vray Sketchup 1.49.01 and here
is this using the output vrimage.
This is an old Sketchup file which I did almost four years ago. Let me just use it to quickly show you the trick
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Step 1: The output size
I have rendered before more than 8000px width x 4000px spherical panorama render which I used for this Virtual
reality post. CLICK HERE to view this post. So far this was the maximum size I have tried. Anyhow in this
particular render, I will make an output of perhaps half of this.
Step 2: IR passes
Since the image is huge, you don't need that high min/max rate. I lowered my min/max rate to -5,-3 .
Step 3: VRImage output.
Locate the output roll-out window and under the setting output, tick the box "Render to VRImage". Once selected
save it in exr root file to any folder that you want.
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Tutorial: How to render extra huge output
crashing in Vray SketchUp
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Step 4: Preview Image.
Vray SketchUp will now begin to write the data in your hardrive. The Vray frame buffer will appear and you will see
on the very top it reads "preview of the file output size that you have entered".
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Open Photoshop and load the exr file
Step 5: Converting the Gamma 2.2 to Gamma1.0
Vray SU by default uses gamma 2.2. When we open the file in Photoshop you should not be surprise why it's too
bright. In order to convert the Gamma 2.2 to 1.0, select image/ adjustments/exposure.
Enter the value 0.45.45 ( 1.0 divided by 2.2)
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Posted by nomer adona at 23:42
Labels: Tutorial, Vray SketchUp, VRImage
Here it is..
I hope this is useful!
Nomeradona
+1 Recommend this on Google
19 comments:
Anonymous 11 August 2011 09:27
how long was the redering compared without using the vrImage?^^, thnx to this sir...
Reply
nomeradona 8 September 2011 23:49

Replies
Reply
i cant do the render then, because vray will crash. the reason why you have to use this is to avoid the crash.
Reply
xtianatix 19 October 2011 15:40
sir, what's the difference of rendering a smaller image first then saving the irradiance/light cache maps and
then loading them for the larger image? thanks sir.
Reply
nomeradona 19 October 2011 15:51
I do that often too. I calculate the passes in smaller output. then reload to the bigger one. It s actually an
excellent thing to do.
Reply
Dileep K 8 November 2012 19:30
hai sir..plz tel me hw to save irradiance and light cache maps for making large out put?
Anonymous 17 November 2011 00:48
sir good day.. can i ask how to save the .exr image to jpeg file? any tricks? thanks in advance
Reply
nomeradona 17 November 2011 11:13
use photoshop. go to mode and change the 32 bit to 8 bit.
Reply
thanks for the answer sir nomer. one more question , do you have any plugins which is reducing the polygon
counts? its because when i render my model it says "verify that you have enough space in your TEMP folder" i
search in internet how to solve this problem and luckily i saw this link of yours on how to render huge image..
but the warning window is always popping up.. i already purge all the materials.but its always happening. i
dont think my computer is the problem because i have a discrete processor and video card.. im using CORE
i7 2600k the latest one and 6870 asus video card. and 8gb of memory. please help me sir :(
Reply
you there are alot of ways to optimize models. the first thing is to use 2nd party software like 3dmax or 3d
deep exploration. You can also use the polygon cruncher. In sketchup Dale martens had develop Polyreducer
script. I suggest you use it per component. meaning you have to optimize the component individually before
importing the skp to the scene.
Reply
i just warn you that the script is still slow.
Reply
download link... http://forums.sketchucation.com/viewtopic.php?t=9789
Reply
thanks alot sir nomer it helped me alot ..this was the output of my work.. http://www.facebook.com/photo.php?
fbid=291273484228409&set=a.291273460895078.69434.100000372798816&type=3&theater
thank you again sir. sa uulitin po.
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Anonymous 24 February 2012 08:13
why is that when i render my sketchup model to VRI, my HDRI image i used in my model doesnt show in my
PHOTOSHOP? i follwed every directions here. please help me. thank you
Reply
Anonymous 20 March 2012 17:14
Hi there. Really great tutorial. For the last friend, are you using a light portable photoshop version? Try
opening the image with a full version that has more color profile options. I think the HDRI image will show.
Reply
nomer adona 4 February 2013 19:26
great tip
Anonymous 11 October 2012 19:01
Frankly to say, I am still sucks at 3d modelling. I try some of your tutorials and those tutorials do fasten my
works, at least now I can submit my presentation board with complete requirement. Thank you very much sir!
But I still looks forward for new tutorials from you, the Great Sir Nomer :D
Reply
great to hear
Richard Parker 3 February 2013 11:03
I keep getting Failed to Create Dump file when creating large images what do I do?
Reply
Richard, is the TEMP folder full, then remove the files there. Another thing SKetchup is 32 bit image
and VRAY is bounded by it. once all the memory is eaten up, it will crash. solution for rendering
large image is this. alternatively use also the other trick of rendering it by parcel using the render
region.
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