preview the vex shader in viewport

[Elena_ DeCosta]

hello guys , could anyone say how to preview the shader in viewport which is created in material shader builder (vop). i know,if i have texture input, i can create a OGL texture parameter outside and can link it with base colour map by promoting.

 

But if I have created a shader with inline node by VEX code and i connected it with diffuse colour in surfacemodel node. In render it showing the proper thing, HOW COULD I SEE IT IN VIEWPORT.

 

i tried to link the diffuse parameter with ogl Diffuse parameter but no use !!!!!!

[SreckoM]

It is bit hard to see on image, but if that is procedural, than you need to render it to see it. Houdini does not support procedurals like noise in viewport, AFAIK. Or you can test it in SOP by outputing it to Cd.

[Elena_ DeCosta]

            Is it possible to see in viewport the shader of checkered pattern. I tried to link the diffuse color of surface model with OGL diffuse parameter but it not showing anything in view port. Is there is other way or I need to compile or create a digital assets.

[mestela]

No, you'll need to render with mantra to see the result of a procedural texture.

 

You can speed things up by setting up a preview rop with lower quality settings, less lights, less objects etc, and bypass connections so that the checker goes straight to Cf rather than through the surface material, but ultimately you need to be viewing through either an IPR render view or the render region in a viewport.

 

As I understand it the main problem is that vex for shaders can't easily be auto-ported into a GL viewport shader. If you _really_ want to get a preview in the viewport you could look into the baking features that have been much improved in H15, but it'll be slower than doing an IPR session.

[Elena_ DeCosta]

                 Could any one say , how they did it, i could not got it, they promote the  parameter with label "Base". but they didn't link with OGL diffuse to see the checker pattern in viewport.

checker_viewport.hip

[SreckoM]

They do not show procedural checker in viewport, but texture that is applied with ColorMap.  gBWCheck.rat 

[Guest tar]

There is also the much underused Shader View tab This gives, or tries to give, a preview render on some simple primitives, but does look a bit broken in 15.0.313 OsX

[Mzigaib]

[Correcting]

 

Sorry! 

 

Wrong reading and answer.

Edited December 23, 2015 by Mzigaib