jackzhousz / mayacgfx

Simple NPR shader demo in Maya

Maya CgFX Shaders

Simple NPR shader demos in Maya. This package includes the following NPR techniques.

• Lit-Sphere [Sloan et al. 2001]
  • View-dependent texture map to capture artistic shading styles.
• X-Toon [Barla et al. 2006]
  • Extension of cartoon shader for providing additional shading behavior with a 2D texture.

Result

Lit-Sphere

X-Toon

Usage

Directory Structure

• [ShaderName]
  • cgfx: CgFX shader files.
    • [ShaderName].cgfx: main CgFX shader file.
    • builtInMatrix.cgh: Maya built in matrix declaration.
  • sourceimages: sample texture files for the shader.

Maya

You can use these CgFX shaders (LitSphere.cgfx or XToon.cgfx) from a built-in Maya CgFXShader material node.

1. Load the CgFX shader plug-in.
   • Window > Settings/Preferences > Plug-In Manager
   • In the Plug-In Manager, Load the cgfxShader.mll plug-in.
2. Create a CgFX shader material.
   • Right-click the target object and select Assign New Material.
   • In Assign New Material window, select the CgFX Shader material from the Maya > Surface list.
   • The CgFXShader material node appears in the Attribute Editor.
3. Load the target CgFX shader file (LitSphere.cgfx or XToon.cgfx).
   • From the CgFX File attribute, you can load the .cgfx file you want to use.
   • The CgFX shader plug-in automatically loads shader attributes.

Shader Attributes

Lit-Sphere shader attributes.

Attribute	Description
colorSampler (Color Map)	Texture attribute for the Lit-Sphere shader. - sourceimages/LitSphereTexture.png can be used for testing.

X-Toon shader attributes.

Attribute	Description
Light Position	Point light location for the illumination.
XToonSampler (XToon Map)	Texture attribute for the X-Toon shader. - sourceimages/XToonSilhouette.png can be used for silhouette effect. - sourceimages/XToonSpecular.png can be used for specular effect.
Show Diffuse	Show diffuse shading term.
Show Specular	Show specular shading term.
Show Silhouette	Show silhouette term.
Silhouette Effect	0: 2D texture is used for specular effect. 1: 2D texture is used for silhouette effect.

License

The MIT License 2015 (c) tody