We are experiencing XPU crashes on the farm with both older and latest drivers
Houdini_20.0.653
NVIDIA driver version 537.58 and
NVIDIA driver version 551.61
GPU 0: NVIDIA GeForce RTX 3090 @ 1695MHz (compute 8.6) with 24575MB (23780MB available) (NVLink:0)
GPU 1: NVIDIA GeForce RTX 3090 @ 1695MHz (compute 8.6) with 24575MB (23809MB available) (NVLink:0)
KarmaXPU: device Type:Optix ID:1 has registered a critical error , so will now stop functioning. Future error messages will be suppressed
KarmaXPU: device Type:Optix ID:0 has registered a critical error , so will now stop functioning. Future error messages will be
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Solaris and Karma » Karma XPU barely using GPU
- pete4d
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Solaris and Karma » Mtlx - Karma - Forward Facing Camera ndc projection
- pete4d
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Solaris and Karma » XPU stopped working after Houdini upgrade (605 to 653).
- pete4d
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Solaris and Karma » Mtlx - Karma - Forward Facing Camera ndc projection
- pete4d
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Hi,
I am wondering if it is possible to achieve a 'forward facing ONLY' camera projection with mtlx?
Currently I am using /renderCam:ndc to achieve projection from my renderCam, but I get additionally a camera backfacing projection onto my geometry. See in the image below.
Is it possible to only have forward facing projection?
Thank you
I am wondering if it is possible to achieve a 'forward facing ONLY' camera projection with mtlx?
Currently I am using /renderCam:ndc to achieve projection from my renderCam, but I get additionally a camera backfacing projection onto my geometry. See in the image below.
Is it possible to only have forward facing projection?
Thank you
Edited by pete4d - April 15, 2024 07:15:03
Solaris and Karma » [SOLVED] Karma spherical uv projection
- pete4d
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MR SMITHFantastic!!!! Works perfectly
This is a really naive way of doing it and probably breaks all proper usd / mtlx conventions but maybe it helps:
Great stuff Mr. Smith.
Edited by pete4d - April 12, 2024 16:59:22
Solaris and Karma » [SOLVED] Karma spherical uv projection
- pete4d
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jsmackThe first suggestion seems to make sense to implement. I dont have experience with those kinda transformations - if you had some time to use @brians example and imitate the arnold example I posted that would be fab. cheers @jsmackpete4d
Do you have an idea how I could achieve being able to transform the origin of the polar projection similar to how I managed it working with Arnolds shipped nodes? Have a look at my video.
You could take advantage of the object space of the mesh. transform the meshe's vertices such that the projection center is at the origin, then transform the prim or a parent prim of the mesh back to the correct position (the inverse of the previous transform.) Then the space 'object' in the shader will refer to the un-transformed space.
To manually manipulate the space, the add and rotate nodes can be used. The transform matrix node was not implemented last time I tried to use it, but maybe that has changed. A matrix node requires a matrix though, so you're on your own for generating one using python or vex or something and then pasting the values in. materialX is missing the required nodes for actually manipulating or importing matrices.
Solaris and Karma » [SOLVED] Karma spherical uv projection
- pete4d
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briansThanks so much. This is really great brians.
Here is an example MaterialX implementation
Do you have an idea how I could achieve being able to transform the origin of the polar projection similar to how I managed it working with Arnolds shipped nodes? Have a look at my video.
The idea is to transform a chromeball HDR which I align with its manipulators and spherically project against a set geometry (lidar etc).
The mtlx polar seems to need some additoinal transform matrix logic so I can transform the projection against geometry.
Maybe you have some ideas how to extend your example further? Appreciate.
Edited by pete4d - April 10, 2024 08:21:46
Solaris and Karma » [SOLVED] Karma spherical uv projection
- pete4d
- 11 posts
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Here my poor attempt to get the spherical projection to work with mtlx.
It kinda works but something is still not right with the node hookups.
As reference you can see the principled shader behave correctly in my video. Check below out.
@jsmack would you be able to lend a hand and seeing how I can fix the mtlx nodes to behave correctly?
It kinda works but something is still not right with the node hookups.
As reference you can see the principled shader behave correctly in my video. Check below out.
@jsmack would you be able to lend a hand and seeing how I can fix the mtlx nodes to behave correctly?
Edited by pete4d - April 9, 2024 19:19:34
Solaris and Karma » [SOLVED] Karma spherical uv projection
- pete4d
- 11 posts
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@jack
Would you be able to help making a mtlx polar projection? Having difficulties creating one... Thank you.
jsmackcelmer
I took a quick look at your example file @mestela, but I'm unable to get a working render. It's coming up on a year since the post... perhaps something has changed in later versions of Karma that would break the setup? I've checked that my pathed texture is valid.
I'm using H19.0.383. Screenshot of my result attached. Thanks for any help!
Your screenshot would indicate using XPU. VEX nodes don't(won't ever) work with XPU. XPU only works with materialX nodes. MtlX has a variety of trig and other math nodes which should make performing a polar projection trivial.
Would you be able to help making a mtlx polar projection? Having difficulties creating one... Thank you.
Solaris and Karma » How to delete custom created viewport overrides
- pete4d
- 11 posts
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mtucker
Yeah, somewhat ridiculously, there is no way to do this right now (besides with a python script). There is already an RFE for this.
Thanks for your tip. Would you mind to share the python way to remove foobar entry? Thanks so much.
Solaris and Karma » How to delete custom created viewport overrides
- pete4d
- 11 posts
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Hi,
What is the way to delete previously saved Viewport overrides? I can create them, but not modify/delete them.
Cheers.
PK
What is the way to delete previously saved Viewport overrides? I can create them, but not modify/delete them.
Cheers.
PK
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