I've followed Jeff's tips using low pixel samples and higher 20-64 Max samples with great effect. Usually at a noise level of 1-0.5%. For scenes with more motion blur or fine detail such as hair Pixel samples may go up to around nine and High samples goes down a bit.
Jeff, would you recommend using area lights over spot and point lights then?
The new approach to rendering using PBR would make a great post on the Old School Blog. Just sayin. 8) :wink:
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Technical Discussion » Some questions about rendering (Mantra)
- Elias Ericsson Rydberg
- 41 posts
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Technical Discussion » no python image access?
- Elias Ericsson Rydberg
- 41 posts
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Would there even be any image data to manipulate in SOPs?
I don't know, but maybe you need a SHOP net as an intermediate step?
I don't know, but maybe you need a SHOP net as an intermediate step?
Houdini Lounge » Build a book case in houdini
- Elias Ericsson Rydberg
- 41 posts
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It would indeed be nice to have the COP output unlimited. The workaround is still valid as it could be repurposed as a proxy resolution switch. I would very much like to access that parameter, if it is set to 1/2 I would like an xform to be 2/1 to compensate.
Anyway, here is the latest rendition!
PS. Notice how the books appear shaded when there is no poly cusp, great for distant shots I would imagine. DS.
PPS. I realize that applying textures with the UVQuickshade Op might not be the best idea. What's best practice when assigning textures in Houdini? I have not found any good answer in the training videos yet. DDS.
Anyway, here is the latest rendition!
PS. Notice how the books appear shaded when there is no poly cusp, great for distant shots I would imagine. DS.
PPS. I realize that applying textures with the UVQuickshade Op might not be the best idea. What's best practice when assigning textures in Houdini? I have not found any good answer in the training videos yet. DDS.
Houdini Lounge » Build a book case in houdini
- Elias Ericsson Rydberg
- 41 posts
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Oh really? It says on the overview page that both Apprentice versions should be able to read and write picnc? Or were you thinking of .pic?
Apprentice HD has no limitations when it comes to rendering stills though. That license really appeals to me, when cash comes in I might get me one of those!
Apprentice HD has no limitations when it comes to rendering stills though. That license really appeals to me, when cash comes in I might get me one of those!
Houdini Lounge » Build a book case in houdini
- Elias Ericsson Rydberg
- 41 posts
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Well, it's fully understandable that referencing a COP network would require it to cook and that it would be slower than loading from disk. But it seems like it's slower than it could have been. As Edward said.
In this case I can partially get around it possibly, but I run into one big problem. Houdini can't render COP images to disk in the full resolution, but is limited to 700x400 something. On the ROP file output node I can set it to 1/8 resolution and bake the images out. A possible solution would be to have that parameter switch to 1/1 at render time?
This is a bit problematic as I would like to have this HDA work in the non-commercial version as well. I figure that Houdini have a global limit on the resolution it can output to disk, I would be nice if COP was excluded?
In this case I can partially get around it possibly, but I run into one big problem. Houdini can't render COP images to disk in the full resolution, but is limited to 700x400 something. On the ROP file output node I can set it to 1/8 resolution and bake the images out. A possible solution would be to have that parameter switch to 1/1 at render time?
This is a bit problematic as I would like to have this HDA work in the non-commercial version as well. I figure that Houdini have a global limit on the resolution it can output to disk, I would be nice if COP was excluded?
Houdini Lounge » Build a book case in houdini
- Elias Ericsson Rydberg
- 41 posts
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Yeah, I've had being quite slow to cook at times, guessing it's because the textures are online. I also ran out of memory one time (8GB) but havn't had again since I restarted houdini.
I guess the best thing to do would be to add a COP output driver and a file node referencing the same path. That way the textures would be localized and processed/pre-cropped. And of course a switch to change between the inputs.
I guess the best thing to do would be to add a COP output driver and a file node referencing the same path. That way the textures would be localized and processed/pre-cropped. And of course a switch to change between the inputs.
Houdini Lounge » Build a book case in houdini
- Elias Ericsson Rydberg
- 41 posts
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Yeah, I've gone ahead and built some book geometry, just the book jackets to have some real sized objects to work with. Sadly they don't provide dimensions, they are simply built using the size in pixels. Then I just scale them to a reasonable size.
At this point I'm using textures straight from the net. I'm thinking it would be good to localize them to $HIP/pic/ I guess it could be done with a little python scripting.
This is what I have so far:
At this point I'm using textures straight from the net. I'm thinking it would be good to localize them to $HIP/pic/ I guess it could be done with a little python scripting.
This is what I have so far:
Houdini Lounge » Build a book case in houdini
- Elias Ericsson Rydberg
- 41 posts
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Houdini Lounge » Build a book case in houdini
- Elias Ericsson Rydberg
- 41 posts
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Great file Adam.
I've been rethinking how I'm going about this a bit. I think I would prefer to populate the shelf with books of known sizes as it would make matching books with textures a lot simpler. I made a little quick file that creates a very simple book from a texture, setting up the textures would be a manual process anyhow.
Currently the simple book isn't textured, that's on the to-do.
I've been rethinking how I'm going about this a bit. I think I would prefer to populate the shelf with books of known sizes as it would make matching books with textures a lot simpler. I made a little quick file that creates a very simple book from a texture, setting up the textures would be a manual process anyhow.
Currently the simple book isn't textured, that's on the to-do.
Houdini Lounge » Houdini 13 Wishlist.
- Elias Ericsson Rydberg
- 41 posts
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johnnycore
It would be cool to have a “per node undo history”, sometimes when I tweak multiple settings on multiple nodes I only want to undo the changes from the first node for example.. instead of bashing ctrl+z till the correct node has reverted to what I want..
So yeah I tought I might add this to the wishlist.. :roll:
This would be a great feature to have. I could imagine a solution similar to what is no the nodes in Nuke. And the suggestion of a more “live” texture painting tool would be very welcome, maybe in combination with open subdivs?
Houdini Lounge » Build a book case in houdini
- Elias Ericsson Rydberg
- 41 posts
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Soldiering on…
Now I have a book case that builds itself dynamically in a non chaotic fashion. Quite pleased. A limitation is that it only can be built along the x axis, this is something I'll have to solve. Maybe each profile could be rotated before anything is built on it, then rotated back into place.
Next hurdle to get over is build a book and magazine that can be built procedurally. Their texture assignment would need to be linked to the size of the book to avoid stretching. I'm not sure how to do this yet.
Nicely commented code by the way!
Now I have a book case that builds itself dynamically in a non chaotic fashion. Quite pleased. A limitation is that it only can be built along the x axis, this is something I'll have to solve. Maybe each profile could be rotated before anything is built on it, then rotated back into place.
Next hurdle to get over is build a book and magazine that can be built procedurally. Their texture assignment would need to be linked to the size of the book to avoid stretching. I'm not sure how to do this yet.
Nicely commented code by the way!
Houdini Lounge » Build a book case in houdini
- Elias Ericsson Rydberg
- 41 posts
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Nice file Adam!
It is not exposed what the python node does, I've never used that node before.
I've attached my latest attempt at building a single shelf and I'm quite happy with it. To take it further I could delete one random book and do an RBD sim to get the chaotic look. Also placing horizontal books and magazines is on the to-do list. And of course, being able to input multiple curves.
Cheers,
Elias
It is not exposed what the python node does, I've never used that node before.
I've attached my latest attempt at building a single shelf and I'm quite happy with it. To take it further I could delete one random book and do an RBD sim to get the chaotic look. Also placing horizontal books and magazines is on the to-do list. And of course, being able to input multiple curves.
Cheers,
Elias
Houdini Lounge » Build a book case in houdini
- Elias Ericsson Rydberg
- 41 posts
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Clever solution!
I have the bounds of where the books can be placed so placing the line should be quite easy.
On my own I used a stamp expression with a copy SOP to create boxes of random sizes. I've been trying to measure the width of each one and move it so that it is flush with the neighboring one.
I'll give your method a shot!
I have the bounds of where the books can be placed so placing the line should be quite easy.
On my own I used a stamp expression with a copy SOP to create boxes of random sizes. I've been trying to measure the width of each one and move it so that it is flush with the neighboring one.
I'll give your method a shot!
Houdini Lounge » Build a book case in houdini
- Elias Ericsson Rydberg
- 41 posts
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Hi all,
I'm trying to populate book shelves with books and maybe different props. Currently I'm just using boxes as stand-in geometry. How would I go about doing this?
Cheers,
Elias
I'm trying to populate book shelves with books and maybe different props. Currently I'm just using boxes as stand-in geometry. How would I go about doing this?
Cheers,
Elias
Technical Discussion » How to use a cop image as a texture map
- Elias Ericsson Rydberg
- 41 posts
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Sure! Appending a OUT-null on the end of the comp is one way to do it. I wonder if there is a sligthly more flexible way to refer to a comp result. Would it be foolish to expect opimg/img1 to return the result of img1? What's the logic behind it not returning that?
Technical Discussion » How to use a cop image as a texture map
- Elias Ericsson Rydberg
- 41 posts
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stevenong
Hi Christine,
Yes, one can still reference COPs for textures. The expression isopimg/img1/Operator_name
I tried the above with both SHOPs & VOPs.
Cheers!
steven
Is there a way to refer to the result of the img1 network? Say I wanted to continue to work on the texture without editing the expression.
Houdini Indie and Apprentice » VOP SOP Inputs
- Elias Ericsson Rydberg
- 41 posts
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Tried in the scene I was working in, didn't work.
Did the same in a new scene, no success.
Then I opened a scene I did a few weeks ago, in this scene the VOP SOP works perfectly. All nodes shows up.
My best guess is that there is some setting somewhere dictating what nodes are sourced at startup?
Edit: Disabled “Use OPlibraries Files to Find OTLs” in Operator Type Manager and now VOP SOP works fine again.
Did the same in a new scene, no success.
Then I opened a scene I did a few weeks ago, in this scene the VOP SOP works perfectly. All nodes shows up.
My best guess is that there is some setting somewhere dictating what nodes are sourced at startup?
Edit: Disabled “Use OPlibraries Files to Find OTLs” in Operator Type Manager and now VOP SOP works fine again.
Houdini Indie and Apprentice » VOP SOP Inputs
- Elias Ericsson Rydberg
- 41 posts
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I can't find Import attribute anymore, a lot of nodes have gone missing. Opened up an older file where I was still able to create the node. Can't create it in a new empty scene. Has anyone else experienced this?
I'm on H12.5.389
I'm on H12.5.389
Technical Discussion » H12.5 failing to start on OS X 10.6
- Elias Ericsson Rydberg
- 41 posts
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Build 389 starts and all seems fine.
Have you guys seen any advantages of running H12.5 on OS X 10.8 over 10.6? I guess it's soon time to upgrade my OS.
Have you guys seen any advantages of running H12.5 on OS X 10.8 over 10.6? I guess it's soon time to upgrade my OS.
Houdini Lounge » FMX 2013 presentations
- Elias Ericsson Rydberg
- 41 posts
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I believe they were recorded and streamed. If they are accessible to the public, I don't know.
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