SINGULAR MATRIX error

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frostfx
Licensed Customer
Posts: 32
Joined: Thu Jun 05, 2014 10:36 am
Location: Tallinn, Estonia
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Hey guys!

We are getting this error on random frames when rendering instanced particles. Scene renders when Enable Instances MB is turned off. Any help would be greatly appreciated!

Code: Select all

Log started Wed Aug 05 21:30:41 2015
Octane Render for Houidini by Juanjo Gonzalez. Build 2.23.2.6 (Build date: Jul  9 2015 18:22:39)
Octane API: 2.23.2
HDK API: 14.0.361
System: GenuineIntel unknown, 3672 Mhz., 8 cores
OS: Windows 7 64-bit

INFOR: [license] -----------  Authenticate Octane license
INFOR: [license] -----------  Octane Licenses are ready
INFOR: [system] ------------  Setting the GPUs device state and priority
INFOR: [ipr image] ---------  Init the preview window
INFOR: [loader] ------------    Houdini camera path: /obj/camera_s01/HumanizerCam_01_HumanizerCam/HumanizerCam_01_HumanizerCamShape
INFOR: [loader] ------------    Houdini camera path: /obj/camera_s01/HumanizerCam_01_HumanizerCam/HumanizerCam_01_HumanizerCamShape
INFOR: [loader] ------------    Houdini camera path: /obj/camera_s01/HumanizerCam_01_HumanizerCam/HumanizerCam_01_HumanizerCamShape
INFOR: [loader] ------------  Loading scene
INFOR: [loader] ------------  Found a OBJ node: /obj/null3
INFOR: [loader] ------------    This object has been filtered as not valid
INFOR: [loader] ------------  Found a OBJ node: /obj/instance2
INFOR: [loader] ------------    Houdini camera path: /obj/camera_s01/HumanizerCam_01_HumanizerCam/HumanizerCam_01_HumanizerCamShape
INFOR: [loader] ------------    Render SOP for this node: /obj/instance2/object_merge1, name object_merge1
INFOR: [loader] ------------  Found a OBJ node: /obj/sphere
INFOR: [loader] ------------    Houdini camera path: /obj/camera_s01/HumanizerCam_01_HumanizerCam/HumanizerCam_01_HumanizerCamShape
INFOR: [loader] ------------    Render SOP for this node: /obj/sphere/sphere1, name sphere1
INFOR: [materials] ---------        Building the materials list
INFOR: [materials] ---------        Found 1 materials
INFOR: [loader] ------------    Transformation matrix for MB step 0
INFOR: [loader] ------------    Houdini camera path: /obj/camera_s01/HumanizerCam_01_HumanizerCam/HumanizerCam_01_HumanizerCamShape
INFOR: [loader] ------------  Building the render target
INFOR: [loader] ------------    Houdini camera path: /obj/camera_s01/HumanizerCam_01_HumanizerCam/HumanizerCam_01_HumanizerCamShape
INFOR: [loader] ------------  Loading the Houdini camera parameters
INFOR: [loader] ------------    Houdini camera path: /obj/camera_s01/HumanizerCam_01_HumanizerCam/HumanizerCam_01_HumanizerCamShape
INFOR: [loader] ------------  Scene Loaded
INFOR: [loader] ------------  Setting the motion blur parameters
INFOR: [ipr image] ---------  Set image callback
INFOR: [loader] ------------    Houdini camera path: /obj/camera_s01/HumanizerCam_01_HumanizerCam/HumanizerCam_01_HumanizerCamShape
INFOR: [render] ------------  Render setup, set renderTarget and update
 *** OCTANE API MSG: Singular matrix: 
 *** OCTANE API MSG:    0.000 0.000 0.000 0.000 
 *** OCTANE API MSG:    0.000 0.000 0.000 0.000 
 *** OCTANE API MSG:    0.000 0.000 0.000 0.000 
 *** OCTANE API MSG: Singular matrix: 
 *** OCTANE API MSG:    0.000 0.000 0.000 0.000 
 *** OCTANE API MSG:    0.000 0.000 0.000 0.000 
 *** OCTANE API MSG:    0.000 0.000 0.000 0.000 
 *** OCTANE API MSG: Singular matrix: 
 *** OCTANE API MSG:    0.000 0.000 0.000 0.000 
 *** OCTANE API MSG:    0.000 0.000 0.000 0.000 
 *** OCTANE API MSG:    0.000 0.000 0.000 0.000 
... ... ...
3xGTX Titan + GTX 770 | i7-4820 | 64GB RAM
3D Animation and Visual Effects http://frostfx.ee/
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juanjgon
Octane Plugin Developer
Posts: 8867
Joined: Tue Jan 19, 2010 12:01 pm
Location: Spain

Thanks for reporting this issue. Can you send to me a sample scene with this problem?

-Juanjo
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frostfx
Licensed Customer
Posts: 32
Joined: Thu Jun 05, 2014 10:36 am
Location: Tallinn, Estonia
Contact:
Contact frostfx

Sure i can, i will prep the scene.
3xGTX Titan + GTX 770 | i7-4820 | 64GB RAM
3D Animation and Visual Effects http://frostfx.ee/
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juanjgon
Octane Plugin Developer
Posts: 8867
Joined: Tue Jan 19, 2010 12:01 pm
Location: Spain

I think that your scene has the same problem that this user has:
viewtopic.php?f=103&t=49435

Your simulation particles have a variant ptnum attribute among all the frames, and the plugin can't compute the motion blur of the instances using time slices inside the frame. This problem should be fixed with the new option to compute the motion blur using the "v" velocity vector attribute.

I will try to post a new build with this feature as soon as possible, but meanwhile if you tell me your Houdini version and OS I could send to you a custom build to test it.

-Juanjo
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frostfx
Licensed Customer
Posts: 32
Joined: Thu Jun 05, 2014 10:36 am
Location: Tallinn, Estonia
Contact:
Contact frostfx

That would be great!

Houdini 14.0.361
Windows 7

Martin
3xGTX Titan + GTX 770 | i7-4820 | 64GB RAM
3D Animation and Visual Effects http://frostfx.ee/
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