Learning to write VEX and VOP shader, open a door of flexibility with Houdini Shaders, although Houdini is already very flexible in its pipeline.

Moreover, Vex and RSL does not have much of a different which makes this learning process easier and interesting.

The First Try on Houdini VEX shader Language.

Step 1 - Create a Surface Shader ( filename.vfl )

Step 2 - Run a Vex Tester. ( filename.ifd )

Step 3 - Bringing it into Houdini. ( explained below )

Ok here is where the interesting part begins.

I am touching Houdini for the first time, and beside is a node base

network that creates the scene in Houdini.

This network just creates a sphere and brings in a

Vex or Vop shader through the materials node.

 

Here is a slightly more sophisticated shader created out of a simple mixcolor VOP shader.

Bringing in a VOP is like bringing in a shader node.

Using the shader network in Houdini, this sphere was created. :)

Here I am just playing around trying to grasp the idea of the workflow and concept.

Mixcolor Vop Coding.

Beside is the houdini network with my simple VOP shader (azebra)

that created the yellow cloudy sphere.

 

After exploring that I moved on to try out more by

adding a sine funtion to that mixcolor script.

Mixcolor with Sine Coding

Moreover creating a displacement Vex shader too.

Displacement with Sine Coding

Well it looks like a light blub now :)

Now adding a texture and some specular to it. .

Mixcolor + Sine + Texture + specular Coding

Well Well here is where i meet my road block.

I did a blend in the t or s direction, so that the pill will have 2 colors.

However when I bring it into Houdini. The shader seems to repeat itself .

The Vex Coding.

 

So I thought it was the UVs.

But nothing change even when I put that UVwrap node in.

This site is related to my Individual Project.