Hey!
I was wondering how one would go about adding shader effects to the camera in karma and XPU?
For instance how would you do raindrops on the lens type of effect like this? [www.shadertoy.com]
I know I can add a physical shader to the camera i LOPs, but would it be possible to use a texture to distort the lens?
Are there any tutorials on this?
Thanks!
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Solaris and Karma » Camera effects on the lens in Karma
- Kvale
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Houdini Lounge » Nvidia rtx 4090 driver issues?
- Kvale
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johner
Hmm, this appears to be a different crash somewhere deep within the new NVIDIA OpenCL compiler. I can reproduce it and will investigate.
Edit: Turns out this was indeed a bug in the new NVIDIA OpenCL compiler, but we were able to find a workaround. Tomorrow's builds of 19.5.408, 19.0.775, and 18.5.1098 should no longer crash. Hopefully this is the last issue with the new driver and compiler!
Awesome, thank you guys. Fingers crossed!
Houdini Lounge » Nvidia rtx 4090 driver issues?
- Kvale
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Just tested out the latest build on windows 10 (19.5.407) and I can confirm simulating vellum using the "vellumConfigueCloth" now works on rtx 4090 with the 522.25 driver (thank you SideFX staff!). However using the "vellumConfigueHair" still cause Houdini to crash on my end. The string constraint type works, but hair constraint type doesn't.
Anyone care to recreate my steps and see if Houdini crashes on your end?
My steps:
1. Create a line.
2. Create a vellumConfigureHair.
3. Create a vellumSolver.
4. Play.
5. Crash.
Thanks!
Anyone care to recreate my steps and see if Houdini crashes on your end?
My steps:
1. Create a line.
2. Create a vellumConfigureHair.
3. Create a vellumSolver.
4. Play.
5. Crash.
Thanks!
Houdini Lounge » Nvidia rtx 4090 driver issues?
- Kvale
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Thomas Klyhn Christensen
I too has this issue, also 4090 and of course the same 522.25 driver, as it is the only option right now.
AkkiSan
Same here.
As a workaround, change the OpenCL device to CPU in
Preferences -> Miscellaneous
and restart Houdini.
Gotcha, thank you guys!
Houdini Lounge » Nvidia rtx 4090 driver issues?
- Kvale
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This is not a bug report.
Anyone ells with a Nvidia 4090 gpu experiencing issues with OpenGL in Houdini windows 10 (h18.5, h19, h19.5)?
I'm using latest and only available Nvidia driver for the 4090 (522.25). Actually there is a game-ready and a studio version. Tested both, had problem with both.
Quick example:
1. Create a sphere.
2. Create a vellumconfigurecloth.
3. Create a vellumsopsolver.
4. Error message is displayed.
5. Play/simulate.
6. Crash.
This is the error message I get
I read in SideFX's official discord someone experienced this bug (didn't list which gpu) and solution was to roll back drivers, but that's not really an option for 4090 since the gpu wont work without that driver hehe.
I'm guessing we'll just have to wait for a new driver for this issue to be fixed.
Cheers!
Anyone ells with a Nvidia 4090 gpu experiencing issues with OpenGL in Houdini windows 10 (h18.5, h19, h19.5)?
I'm using latest and only available Nvidia driver for the 4090 (522.25). Actually there is a game-ready and a studio version. Tested both, had problem with both.
Quick example:
1. Create a sphere.
2. Create a vellumconfigurecloth.
3. Create a vellumsopsolver.
4. Error message is displayed.
5. Play/simulate.
6. Crash.
This is the error message I get
clBuildProgram (-11)
1 error generated.
OpenCL Exception: <kernel>:1907:20: error: blocks support disabled - compile with -fblocks or for OpenCL 2.0
^{
I read in SideFX's official discord someone experienced this bug (didn't list which gpu) and solution was to roll back drivers, but that's not really an option for 4090 since the gpu wont work without that driver hehe.
I'm guessing we'll just have to wait for a new driver for this issue to be fixed.
Cheers!
Edited by Kvale - Oct. 15, 2022 19:45:24
Technical Discussion » Working with imported FBX hierarchy - bunch of questions
- Kvale
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My bad, for some reason I wrote the wrong name for the shelf tool. It is called "Extract" not "fetch". I edited my note to reflect this.
Technical Discussion » Working with imported FBX hierarchy - bunch of questions
- Kvale
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Pardon my ignorance, but doesn't the already built in shelf tool "extract" do this? Select the nodes you want to be objectmerged and then hit "extract" either from shelf or viewport. Ofc this does not have the automatic shaderhookup besides the shopmaterial attrbiute.
If you just want to import fbx into houdini without building a hierchy here are som other ways:
Since h19 file node can now be used to import FBX.
Also for characters the fbxcharacterimport in sops works. Slap down a bone deform as well to hook up rig.
Last but not least the agent sop node can import any kind of FBX.
If you just want to import fbx into houdini without building a hierchy here are som other ways:
Since h19 file node can now be used to import FBX.
Also for characters the fbxcharacterimport in sops works. Slap down a bone deform as well to hook up rig.
Last but not least the agent sop node can import any kind of FBX.
Edited by Kvale - Sept. 22, 2022 09:35:46
MARDINI Daily Art Challenge 2022 » Day 20 Image | SideFX Labs | Mesh Tiler
- Kvale
- 28 posts
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MARDINI Daily Art Challenge 2022 » Day 18 Image | SideFX Labs | Cable Generator
- Kvale
- 28 posts
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MARDINI Daily Art Challenge 2022 » Day 17 Image | SideFX Labs | Lightning Generator
- Kvale
- 28 posts
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MARDINI Daily Art Challenge 2022 » Day 16 Animation | SideFX Labs | Tree Tools
- Kvale
- 28 posts
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MARDINI Daily Art Challenge 2022 » Day 16 Image | SideFX Labs | Tree Tools
- Kvale
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Day 16 - Labs tree generator + rigid simmulation.
Edited by Kvale - March 16, 2022 20:46:48
Technical Discussion » Stick spheres to a rolling tube
Houdini for Realtime » Artists' Guide for External Editor for Scripting in Houdini
- Kvale
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Houdini Indie and Apprentice » grain solver snow steps exporting to maya
- Kvale
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If your going for the volume approach, it really comes down to shader tweaking to get the snow look. Im not too familliar with Redshifts volume shader, but exporting a out a vdb with just the density field should be enough to get a decent result. In Maya, make sure you have some decent lights setup. In redshifts volume shader I imagen you could mess with a density scale which will make the volume thicker and more dense. You can probebly tweak the light scattering and shadow density which will block less light and allow more light to shine through the volume. Again, mostly comes down to shader tweaks.
A different option to exporting out volumes could be to mesh your particles and create geometry with the vdb tools. hen add some detail with noise and such. This however can get quite expensive depending on your voxelsize.
I know Steven has a tutorial [www.cgcircuit.com] based on making snow with grains and rendering it in houdini. Bet you could take alot from his shader techniques and apply them in Maya.
A different option to exporting out volumes could be to mesh your particles and create geometry with the vdb tools. hen add some detail with noise and such. This however can get quite expensive depending on your voxelsize.
I know Steven has a tutorial [www.cgcircuit.com] based on making snow with grains and rendering it in houdini. Bet you could take alot from his shader techniques and apply them in Maya.
Technical Discussion » Houdini Crowds Differentiation between agent states
- Kvale
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Cwhite always droppin a knowledge bomb at you whenever there's a crowds question. Gotta love it!
Technical Discussion » Stopping the cooking
- Kvale
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I my experience, adding larger HDAs to a scene requires cooking just to setup the network. Embedding the HDA into the hip tend to work, altho you basically just move the 1.5 sec into the bootup time of the hipfile instead. After that tho it's usually smooth.
HOULY Daily Challenge » Day 4 | Elements: Fire
- Kvale
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HOULY Daily Challenge » Day 3 | Elements: Water
- Kvale
- 28 posts
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HOULY Daily Challenge » Day 2 | Elements: Wind
- Kvale
- 28 posts
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