Houdini 13 Released!

hatrick · November 1, 2013

It's a bit of ironic that new particles in Houdini end up where Maya's world: a series of expressions (and at the same time Maya is finding its way to procedural world).

I suppose the changes in VEX architecture is a big unspoken hero in H13... I wonder if VEX snippets after compilation to native byte code are concatenated to a single commands stream or every VEXexpression operator in Dops holds overhead of initialization and data in/out...

.... could you explain in which sense the DOPpop thing is a step away from proceduralism ?

does your report about the changes in VEX (which i don't fully understand:) answer that question?

cheers

Lucas

Edited November 1, 2013 by hatrick

Zach · November 1, 2013

I am seriously digging this release. I've been dropping some low-res alembic octopi down some very long staircases. I think it's gonna be time soon for Squab and Octo to kiss at several kilometers and hour. I'm pretty amazed at how quick and robust the finite element solver is, especially with solids with fewer than 10,000 tets. I've been having a lot of luck creating low-res, FEM-friendly tetmeshes by just bashing together geo, sending everything to vdb and back (iso >= 0, adaptivity = 0) and doing adaptive remeshing with a very low density. Otherwise, sometimes when I use the shelf tools for more complex geometry, I get pretty concave-looking, almost shrinkwrapped geo out of the tetrahedralize sop.

Anybody know where the differences between 32-bit and 64-bit precision modes really start to take effect? I know that 64-bit operations are very unfriendly, threading-wise - so I imagine there's a point where 64-bit mode becomes orders of magnitude slower than 32-bit. Just curious.

That Pop Curve Force tool is pretty bangin' as well - without having looked too closely, it seems functionally similar to Alessandro's tool, except pointcloud-based and without noise or the same kind of control for extrapolation (or sweet visualizations). But, hey, we can use 'em both, why not.

yongbin · November 1, 2013

python2.7 and numpy is also great for python developers!

magneto · November 1, 2013

Do check the new FindShortestPath SOP.

Its a very impressive pathfinder with tons of features.

Is that using Dijkstra's shortest path algorithm? I don't have 13 to test

Alexey Vanzhula · November 1, 2013

What happened with orbolt? Its not workin more than one day.

Magnus Pettersson · November 1, 2013

What happened with orbolt? Its not workin more than one day.

Dunno, i tried to go to the orbolt webpage and i just get to some "sedo domain parking" page.

kev2 · November 1, 2013

Great release. Speedier, smoother all around here. Draw curve is great. Particles supercharged. FEM next...

Rendering some Pyrro and FEM with HQueue on EC2 now. Process is much much smoother now, pricing seems to be somewhat better...more of a get what you hoped for experience with cloud rendering so far.

hyperforce · November 1, 2013

Is that using Dijkstra's shortest path algorithm? I don't have 13 to test

By default its Heuristics are set to A* but you can change that to act like Dijkstra's Algorithm by typing 0 (*zero) in the heuristics field.

Its also got functionality for custom point, edge and turning cost, directional connections (based on vertex order), forced connections and connections to avoid.

It can output one path, several paths from a start to multiple ends, or a path from each start to each end respectively.

By specifying a second input, and setting the start and end point number to 0 and 1 (instead of a group name) the pathfinder will use the closest point on input 1 (the grid) to these respective point numbers from input 2 (for example a curve). This allows for a fast, interactive workflow.

Finally it can export the distances across the grid based on this setting and export distances from all points to the closest start point, or export distances through a large array attribute for each point to each other point.

Finally, the entire algorithm uses a pre-computed look up table method, making it extremely fast, easily able to deal with a large amount of data quickly.

Look up the examples in the help files from some in depth examples.

Edited November 1, 2013 by hyperforce

Alexey Vanzhula · November 3, 2013

At now, linux version crash when you press "Tab" in any tiling window manager. I tried wmfs,i3,dwm. In fluxbox work fine :huh: . Version 13.0.198.21

hyperforce · November 3, 2013

Version 198 is still pretty buggy, but its a version that's (judging by the version number) already a few weeks old.

So i'm expecting the next daily build to have fixed several bugs.

Any bugs you encounter, make sure you submit them to the bug tracker on sidefx.com

The more bugs can be identified quickly, the faster they can be fixed.

Edited November 3, 2013 by hyperforce

sandfx · November 3, 2013

Great release. I like new particles. thanks you sidefx!

Neil78 · November 3, 2013

Just tested new deep exrs to Nuke - works a treat - Pyro sims are going to be a joy to comp - massive data though - holy hell!

kev2 · November 3, 2013

Neil, I'm testing deep exrs to Nuke too but keep screwing something up. Partly inexperience with deep but I think it's something trivial like not checking a box somewhere. Any chance you have a simple file I could use as a reference?

Thanks, Kevin

&- you may want to update your signature line now

Neil78 · November 3, 2013

Yes it took me a bit to figure it out, and im certainly no expert on deeep data stuff - heres my basic hip file you can render from. I Can't seem to upload the nuke file... odforce wont let me - so heres a text script for the Nuke layout below....

I'm Comping pyro over a ball and then playing with relative Z positions in Nuke.

Im running 13 in apprentice at the mo - need more money for the AUP!!

Cheers

set cut_paste_input [stack 0]

version 7.0 v8

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name BackdropNode1

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label "<center><img src=\"Camera.png\"> PC"

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bdwidth 120

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bdwidth 768

bdheight 543

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BackdropNode {

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xpos 800

ypos -91

bdwidth 160

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BackdropNode {

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bdwidth 646

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DeepFromImage {

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toolbar_brush_hardness 0.200000003

toolbar_source_transform_scale {1 1}

toolbar_source_transform_center {320 240}

color 0

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lifetime_type "all frames"

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Copy {

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Grade {

white 1.8

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Blur {

size 3

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Dot {

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push $N8556b00

add_layer {smoke_color smoke_color.r smoke_color.red smoke_color.g smoke_color.green smoke_color.b smoke_color.blue}

Copy {

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Merge2 {

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DeepRead {

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