iblenv mentalRay -SA

[5inch]

Hi Pros,

I get a strange exception when I try to render an ibl in my mentalray-standalone-scene, here is the error-log:


MSG 0.0 info : mental ray, version 3.10.1.4
MSG 0.0 info : use -copyright option to view copyright and terms of use.
MSG 0.0 info : License servers: autodesk-liccae.in.EDAG.vwg, autodesk1-liccae.in.EDAG.vwg, autodesk2-liccae.in.EDAG.vwg
MSG 0.0 progr: Running 4 render threads
MSG 0.0 4 MB info : version 3.10.1.4, Jan 31 2012, revision 165283
MI 0.0 6 MB progr: reading startup file "C:\Program Files\Autodesk\mrstand3.10.1-adsk2013\bin/rayrc"
MI 0.0 6 MB progr: parsing file C:\Program Files\Autodesk\mrstand3.10.1-adsk2013\bin/rayrc
MSG 0.0 6 MB info : no ray hosts file .ray3hosts or .rayhosts
MI 0.0 6 MB progr: parsing file H:\Daten\Digitaler_Karosseriebau_VSC\02_data\12070 4\Rendering\geometrieuntersuchung_IBL\kugel_quader _ibl.mi
LINK 0.0 6 MB progr: loaded shader library AdskShaderSDK.dll (C:\Program Files\Autodesk\mrstand3.10.1-adsk2013\bin/../shaders/bin/AdskShaderSDK.dll)
LINK 0.0 6 MB progr: loaded shader library MayaShaders.dll (C:\Program Files\Autodesk\mrstand3.10.1-adsk2013\bin/../shaders/bin/MayaShaders.dll)
LINK 0.0 6 MB progr: loaded shader library mayabase.dll (C:\Program Files\Autodesk\mrstand3.10.1-adsk2013\bin/../shaders/bin/mayabase.dll)
LINK 0.0 6 MB progr: loaded shader library base.dll (C:\Program Files\Autodesk\mrstand3.10.1-adsk2013\bin/../shaders/bin/base.dll)
LINK 0.0 6 MB progr: loaded shader library architectural.so (C:\Program Files\Autodesk\mrstand3.10.1-adsk2013\bin/../shaders/bin/architectural.dll)
LINK 0.0 6 MB progr: loaded shader library paint.so (C:\Program Files\Autodesk\mrstand3.10.1-adsk2013\bin/../shaders/bin/paint.dll)
LINK 0.0 6 MB progr: loaded shader library subsurface.so (C:\Program Files\Autodesk\mrstand3.10.1-adsk2013\bin/../shaders/bin/subsurface.dll)
LINK 0.0 6 MB progr: loaded shader library base.so (C:\Program Files\Autodesk\mrstand3.10.1-adsk2013\bin/../shaders/bin/base.dll)
LINK 0.0 6 MB progr: loaded shader library physics.so (C:\Program Files\Autodesk\mrstand3.10.1-adsk2013\bin/../shaders/bin/physics.dll)
MI 0.0 7 MB info : wallclock 0:00:00.81 for mi scene file parsing
MI 0.0 7 MB info : current mem usage 7 MB, max mem usage 8 MB
MEM 0.2 7 MB info : physical memory detected: total 8191 MB, free 4888 MB
MEM 0.2 7 MB info : virtual memory limit set to 4888 MB
SCEN 0.2 7 MB progr: begin scene preprocessing for frame 1
SCEN 0.2 8 MB info : 5 geometry leaf instances (3 scheduled, 0 cached, 2 shared)
PHEN 0.2 14 MB fatal 051500: interrupted by exception code 0xc0000005 (access violation)
SCEN 0.2 8 MB info : 5 light leaf instances
PHEN 0.4 14 MB fatal 051500: interrupted by exception code 0xc0000005 (access violation)
PHEN 0.3 14 MB fatal 051500: interrupted by exception code 0xc0000005 (access violation)
SCEN 0.2 8 MB info : PHEN 0.5 14 MB fatal 051500: interrupted by exception code 0xc0000005 (access violation)
wallclock 0:00:00.00 for scene preprocessing
SCEN 0.2 8 MB info : current mem usage 8 MB, max mem usage 9 MB
RC 0.2 9 MB info : scene extent: (-2000.32,-10887.30,-500.32) : (2000.32,4962.64,2000.04)
RC 0.2 9 MB info :
….

The rendering than stops. Can you help me out?
Here is the test-scene as download:

Any tip is more than welcome!!!!

cheers, 5inch

[bart]

OK, lots of issues.

If you use Maya shaders, you cannot comment out the state shaders completely. If not using the pass system I usually get by with just commenting out the fb part, eg,

    state [
        "maya_state" (
            )
#        ,
#        "adskFrameBufferState" (
#            )
        ]

To get rid of declaration warnings, I put the base.mi include before the Maya ones, which automatically load the architectural and paint declarations assuming base has already been loaded.

$include <base.mi>
$include "AdskShaderSDK.mi"
$include "MayaShaders.mi"
$include "mayabase.mi"
$include <AdskShaderSDKWrappers.mi>

[bart]

And further clarification, for those reading along, this is using a Maya IBL, not a builtin or user ibl. I changed color gain back down to 1.

Also this uses old style fb declaration in the camera, which I changed to new style for my tests.

    framebuffer "main"
        datatype "rgba"
        primary on
        filtering on
        filetype "png"
        filename "kugel_quader.png"

[5inch]

Hi bart,

thank you for your time.
ok , great tips!


How can I bring in the ibl?
What is the syntax for using the
MR-SA-IBL.
I couldn’t find any on the web.

Can you please post a code snipped for
The IBL, so I can bring it in my code.

Big thanks to you!

Cheers, 5inch

[5inch]

hi bart,

thanks, it works now!
can you tell me if there is a MR-SA-IBL ich can put into the scene?
or is the Maya-one the best solution?

cheers, 5inch

[bart]

There's two options, if you have 2013. user ibl env as a shader, or string options for builtin IBL.

See the manual for builtin IBL in Scene Description Language>Options>Image-Based-Lighting. The string options all start with the words "environment lighting" and will process whatever is in the environment shader slot, including the Maya IBL you already have there. So if you don't use the Maya switch for turning on lights, you could use the Builtin IBL. I'd set the Maya IBL filtering way down so as not to duplicate work and waste rendering time.

[5inch]

Hey bart,

thanks a lot, I will try to manage
your tips!

Cheers, 5inch

[Remydrh]

Just to clarify (because I see this done sometimes): do not use the "emit light" function of the Maya IBL in the Render Settings. You can use it just to load the texture for lighting but not the other features when using Builtin IBL. The Builtin IBL will see it as an environment on the camera and use it for lighting automatically. If you use the other options in the Render Settings you may duplicate the lighting.

If using user_ibl_env in 2013, do not use the Maya IBL in the Render Settings at all.

[5inch]

hi Remydrh,

thanks for your appendix.

Cheers, 5inch