Comments on: p_HairTK, p_HairTK_shadow, p_shader_replacer http://www.djx.com.au/blog/2009/04/14/p_hairtk-p_hairtk_shadow-p_shader_replacer/ more serious than before (in a good way) Sat, 17 Jul 2010 03:58:27 +1000 http://wordpress.org/?v=2.9.2 hourly 1 By: zeus_31 http://www.djx.com.au/blog/2009/04/14/p_hairtk-p_hairtk_shadow-p_shader_replacer/comment-page-1/#comment-10509 zeus_31 Mon, 21 Jun 2010 06:12:56 +0000 http://www.djx.com.au/blog/?p=143#comment-10509 Hi David , Wish you well ! Beside great post . I since to have a little issues here , after I connected all necessary connection when I hit render and the result since to be no changes at all. Even I tweak its color on p_HairTK1 and its appear no difference. Maya kept saying this warning message " Warning: (Mayatomr.Custom) : p_shader_replacer1: reference to invalid instance, ignored // Kindly enlighten me with your ingenious technical taste of yours. Greatly appreciate David. Cheers. Hi David , Wish you well ! Beside great post . I since to have a little issues here , after I connected all necessary connection when I hit render and the result since to be no changes at all. Even I tweak its color on p_HairTK1 and its appear no difference. Maya kept saying this warning message " Warning: (Mayatomr.Custom) : p_shader_replacer1: reference to invalid instance, ignored //

Kindly enlighten me with your ingenious technical taste of yours. Greatly appreciate David.

Cheers.

]]> By: Dag http://www.djx.com.au/blog/2009/04/14/p_hairtk-p_hairtk_shadow-p_shader_replacer/comment-page-1/#comment-10485 Dag Fri, 07 May 2010 19:47:13 +0000 http://www.djx.com.au/blog/?p=143#comment-10485 Thanks alot for prompt reply! Well, ok. Perhaps It's just in the way it is animated that makes it look like the highlights travel very fast. I can't say what I want. perhaps it looks good then =) There are 2 spots of highlights you can adjust on the shader itself(something called deviation). Anyway, played with those and seems I need both to make it look sweet. I don't really want to have too much other details in the texture or anything in this case since it supposed to fit Lucky Luke himself. So he's modeled, to be textured and now I'm working on his hair. The way I've gone about this is formed curves and then use them to attach paint effect strokes. Thanks alot for prompt reply!

Well, ok. Perhaps It's just in the way it is animated that makes it look like the highlights travel very fast.
I can't say what I want. perhaps it looks good then =)
There are 2 spots of highlights you can adjust on the shader itself(something called deviation).
Anyway, played with those and seems I need both to make it look sweet. I don't really want to have too much other details in the texture or anything in this case since it supposed to fit Lucky Luke himself. So he's modeled, to be textured and now I'm working on his hair. The way I've gone about this is formed curves and then use them to attach paint effect strokes.

]]> By: david http://www.djx.com.au/blog/2009/04/14/p_hairtk-p_hairtk_shadow-p_shader_replacer/comment-page-1/#comment-10484 david Fri, 07 May 2010 14:02:09 +0000 http://www.djx.com.au/blog/?p=143#comment-10484 I'm not sure what you had in mind. Those highlights look ok to me. Maybe post a reference to an example of the look you want. (Thanks for the compliments btw) I'm not sure what you had in mind. Those highlights look ok to me. Maybe post a reference to an example of the look you want.
(Thanks for the compliments btw)

]]> By: Dag http://www.djx.com.au/blog/2009/04/14/p_hairtk-p_hairtk_shadow-p_shader_replacer/comment-page-1/#comment-10483 Dag Fri, 07 May 2010 12:36:43 +0000 http://www.djx.com.au/blog/?p=143#comment-10483 Hey, great blog! Been following it for some time and It's a really valuable resource. Really doing a great job so thanks for everything. I've read and done some test with the hair shader and it is really cool. So this is my latest test and I'm really happy with how it turned out. It's meant to be cartoony sort of greasy hair and so far I'm happy, but when animated the higlights are really running over the strands and imo I don't think it looks really good. I think it can look better, just don't know how =/ So I'll post a clip and the scene file with the setiings. I don't expect anything by posting, but I guess the chances are greater than if I didn't =) Looking forward to new great posts from you! Keep it up and thanks once again!! www.thedagnode.com/tests/mental_ray_hair_test_2.avi www.thedagnode.com/tests/puppet_hair_shader_test.ma Hey, great blog!
Been following it for some time and It's a really valuable resource. Really doing a great job so thanks for everything.
I've read and done some test with the hair shader and it is really cool. So this is my latest test and I'm really happy with how it turned out. It's meant to be cartoony sort of greasy hair and so far I'm happy, but when animated the higlights are really running over the strands and imo I don't think it looks really good. I think it can look better, just don't know how =/
So I'll post a clip and the scene file with the setiings. I don't expect anything by posting, but I guess the chances are greater than if I didn't =)

Looking forward to new great posts from you! Keep it up and thanks once again!!

http://www.thedagnode.com/tests/mental_ray_hair_test_2.avi

http://www.thedagnode.com/tests/puppet_hair_shader_test.ma

]]> By: david http://www.djx.com.au/blog/2009/04/14/p_hairtk-p_hairtk_shadow-p_shader_replacer/comment-page-1/#comment-10405 david Wed, 12 Aug 2009 09:17:11 +0000 http://www.djx.com.au/blog/?p=143#comment-10405 If your fur is attached to a poly object, then the geometry shader host needs to be a poly object. And fur growing on a nurbs surface requires a nurbs host for the geometry shader. Other than that, I'm not sure. What version of maya, and puppet shaders are you using? If your fur is attached to a poly object, then the geometry shader host needs to be a poly object. And fur growing on a nurbs surface requires a nurbs host for the geometry shader.
Other than that, I'm not sure.
What version of maya, and puppet shaders are you using?

]]> By: J_M_Lowe http://www.djx.com.au/blog/2009/04/14/p_hairtk-p_hairtk_shadow-p_shader_replacer/comment-page-1/#comment-10403 J_M_Lowe Tue, 11 Aug 2009 23:36:36 +0000 http://www.djx.com.au/blog/?p=143#comment-10403 Cant get it to work on nurbs surfaces, is there some other loop hole? poly's work great! thanks! Cant get it to work on nurbs surfaces, is there some other loop hole? poly's work great! thanks!

]]> By: david http://www.djx.com.au/blog/2009/04/14/p_hairtk-p_hairtk_shadow-p_shader_replacer/comment-page-1/#comment-10396 david Thu, 06 Aug 2009 11:30:43 +0000 http://www.djx.com.au/blog/?p=143#comment-10396 There is nothing special about the set up for the fur renders on this page. It's just a single spotlight and the furry torus is sitting in a white box. I have final gather on with a couple of diffuse bounces. The camera has the mia_exposure_photographic lens shader to keep the contrast under control. This is important with fur, which tends to blow out the hightlights. mia_exposure_photographic lets you wind down the highlights while preserving the shadow detail. There is nothing special about the set up for the fur renders on this page. It's just a single spotlight and the furry torus is sitting in a white box. I have final gather on with a couple of diffuse bounces.

The camera has the mia_exposure_photographic lens shader to keep the contrast under control. This is important with fur, which tends to blow out the hightlights. mia_exposure_photographic lets you wind down the highlights while preserving the shadow detail.

]]> By: Rubent100 http://www.djx.com.au/blog/2009/04/14/p_hairtk-p_hairtk_shadow-p_shader_replacer/comment-page-1/#comment-10393 Rubent100 Wed, 05 Aug 2009 19:33:36 +0000 http://www.djx.com.au/blog/?p=143#comment-10393 David this is very good stuff. Just what i was looking for Since Puppet doesn't include a tutorial with his shaders. But im having difficulty getting your results. My fur looks too cartoonish and it takes years to render even without final gather. i know that in order for fur to look good, it depends alot on the lighting. So i was wondering if you could share alittle more your render settings etc. David this is very good stuff. Just what i was looking for Since Puppet doesn't include a tutorial with his shaders. But im having difficulty getting your results. My fur looks too cartoonish and it takes years to render even without final gather. i know that in order for fur to look good, it depends alot on the lighting. So i was wondering if you could share alittle more your render settings etc.

]]> By: rusty http://www.djx.com.au/blog/2009/04/14/p_hairtk-p_hairtk_shadow-p_shader_replacer/comment-page-1/#comment-10359 rusty Fri, 12 Jun 2009 13:16:25 +0000 http://www.djx.com.au/blog/?p=143#comment-10359 Thanks for all that David. I've decided on reflection that the time and effort spent rendering a motion vector pass for fur and then comping it really isn't worth the return i'd get. Motion Blur done at render time with all the right settings isn't too expensive and we've got a 50+ computer renderfarm that should help slice through it. The reason i'm keen to use MB at all is to try and fake a bit of motion on the fur. We really don't want the headache of using actual dynamic fur, caching, fixing errors, re caching etc so as the fur is kind of short and stiff anyway the return on effort/time spent is, again, not really it. While i'm asking - do you know any other little tricks to cheat a bit of motion onto the fur without the headaches of dynamic hair curves/attractors?? :p Cheers for all the help. This is my favourite maya/MR blog!! Thanks for all that David.

I've decided on reflection that the time and effort spent rendering a motion vector pass for fur and then comping it really isn't worth the return i'd get. Motion Blur done at render time with all the right settings isn't too expensive and we've got a 50+ computer renderfarm that should help slice through it.

The reason i'm keen to use MB at all is to try and fake a bit of motion on the fur. We really don't want the headache of using actual dynamic fur, caching, fixing errors, re caching etc so as the fur is kind of short and stiff anyway the return on effort/time spent is, again, not really it.

While i'm asking - do you know any other little tricks to cheat a bit of motion onto the fur without the headaches of dynamic hair curves/attractors?? :p

Cheers for all the help. This is my favourite maya/MR blog!!

]]> By: david http://www.djx.com.au/blog/2009/04/14/p_hairtk-p_hairtk_shadow-p_shader_replacer/comment-page-1/#comment-10358 david Thu, 11 Jun 2009 12:14:03 +0000 http://www.djx.com.au/blog/?p=143#comment-10358 p_motion_to_rgb seems to work correctly when rendering fur using the p_shader_replacer. I have not tested the result with the RealSmart filter in after effects. In theory it should work just like anything else, but I worry there may be some artifacts caused by the fine details. (Hopefully I'll get a chance to test this soon). Here's a link to a quick setup guide for motion blur with p_motion_to_rgb http://www.puppet.tfdv.com/shaders_p/docs/2d_blur_motiontorgb.html (Where it says 'Raster Space' I used "RealSmart' instead) p_motion_to_rgb seems to work correctly when rendering fur using the p_shader_replacer.
I have not tested the result with the RealSmart filter in after effects. In theory it should work just like anything else, but I worry there may be some artifacts caused by the fine details. (Hopefully I'll get a chance to test this soon).

Here's a link to a quick setup guide for motion blur with p_motion_to_rgb

http://www.puppet.tfdv.com/shaders_p/docs/2d_blur_motiontorgb.html

(Where it says 'Raster Space' I used "RealSmart' instead)

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