Video 4 covers how to work with multiple lights and light colors in our shader through a light loop.  Also we add the ambient color attribute which rounds out our basic attributes.

Download: shader_demo_04.cgfx – completed shader file from the demo
                  shader_demo_04b.cgfx - with smoothstep() specular masking 

Runtime: ~20 min.

Software: Maya

Instructor: Leo Covarrubias

Part 3 of the series covers adding a Blinn specular highlight to the shader and breaking the code down into seperate functions for lambert and blinn components.

Download: shader_demo_03.cgfx – the completed shader from the video.

Runtime: ~20 min.

Software: Maya

Instructor: Leo Covarrubias

Addendum:

Here i talk about masking the specular highlight so it only appears on the illuminated portions of the mesh and does not spill over into areas that have no light.

Download: shader_demo_03b.cgfx

Runtime: ~8 min.

Software: Maya

Instructor: Leo Covarrubias

In this part of the CGFX Shader Writing series I continue to expand the shader by adding user tweakable variables and I demonstrate how to implement a Lambert diffuse shading function with one light.

Download: shader_demo_02.cgfx – the completed shader file from the video.

Runtime: ~30 min.

Software: Maya

Instructor: Leo Covarrubias

Via Tutorial Request:

In this video, we cover how to use Mental Ray's transmat and parti_volume nodes to create a light ray effect. Physical Sun and Sky is also part of this tutorial.

Runtime: ~11 mins

Instructor: Pete Anderson

Software: Maya

Scene used in video: Light Rays

www.peter-anderson.com

In this video I cover the basics of CGFX shader code and show how to put together the most basic shader possible for Maya – a flat color.

Download: shader_demo_01.cgfx – the completed shader file from the demo.

Note: Hobbes the Cat really, really wanted his dinner and he likes to remind me that I don’t know what I’m doing.

Runtime: ~45 min.

Software: Maya, ‘Any Text Editor’

Instructor: Leo Covarrubias

Seventh timelapse of the Zbrush sculpting session for the Servant of the ancient Gods called "Zoth' nothul".
In this session I continue working on refining the anatomy of the torso and legs.
This is the last recording I did while sculpting this model; hope you enjoyed viewing those videos and maybe learn something new.

Runtime:~ 3 mins

Artist: Federico Scarbini

http://www.federicoscarbini.com/wp/

Fifth timelapse of the Zbrush sculpting session for the Servant of the ancient Gods called "Zoth' nothul".
Time to check again proportions, refining some major anatomy and work more on the face.

Runtime:~ 5 mins

Artist: Federico Scarbini

http://www.federicoscarbini.com/wp/

Fourth timelapse of the Zbrush sculpting session for the Servant of the ancient Gods called "Zoth' nothul".
In this session I refine the torso, some work on the arms and refining the face a little more.

Runtime:~ 9 mins

Artist: Federico Scarbini

http://www.federicoscarbini.com/wp/

Third timelapse of the Zbrush sculpting session for the Servant of the ancient Gods called "Zoth' nothul".
In this session I work more on the legs, feet and hands; just refining some shape I don't want to leave behind.

Runtime:~ 5 mins

Artist: Federico Scarbini

http://www.federicoscarbini.com/wp/

Second timelapse of the Zbrush sculpting session for the Servant of the ancient Gods called "Zoth' nothul". In this session I roughed out muscles and placed down the major landmarks. Also sculpt a bit of the facial features.

Runtime:~ 10 mins

Artist: Federico Scarbini

http://www.federicoscarbini.com/wp/

First timelapse of the Zbrush sculpting session for the Servant of the ancient Gods called "Zoth' nothul".
In this session I blocked out the proportions and add first volumes to the base mesh.

Runtime:~ 6mins

Artist: Federico Scarbini

http://www.federicoscarbini.com/wp/

Here is the Sculpting Demonic Overseer. Unfortunately, the first steps could not be saved properly, that's why the process of making a base mesh is not shown in this video

Runtime: ~21 mins

Artist: First Keeper

firstkeeper.deviantart.com