Maya: Raytracing Tutorial, Wine Glass

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glass.jpg

Revolve a wine glass shape, place it on a plane.

Turn off Color Management:
Select Windows->Settings/Preferences->Preferences
Select Color Management
Uncheck Enable Color Management
Select Save

Press this Render Settings icon upper right or middle  srender_settings  (Windows->Rendering Editors->Render Settings...)

Change Rendering Using to Maya Software
Under the Common tab:
Under the Image File Output
arrow:
Choose Image format: Tiff

Under Maya Software tab:
Under Raytracing Quality
    
Check  Raytracing
    
Input Reflections 1
    
Input Refractions 10
    
Input Shadows 2
    
Input Bias .2 This will make round objects look less jaggy.


Do some test renders with raytracing before you make the glass transparent to get the shadows where you want them.

Find a photograph of a glass you like for reference.


hypershade   Windows->Rendering Editors->Hypershade
In the hypershade window, click on Phong to create a new shader ball.

Select one or more objects from the scene.

Click the Phong shader ball.
Double click the phong shader ball to see the attriibutes.
Adjust Color to black.
Adjust Transparency, double click on the black color box to bring up the menu.
    
In HSV mode
    
input .9 as the value (V)

Under Specular Shading:
Input Cosine Power 100
Djust Specular Color to white
Input Reflectivity .2

Under Raytrace Options:
Check Refractions
Input Refractive Index 1.3
Input Refraction Limit 10
Input Surface Thickness  .4
Input Reflection Limit 1

Assign the shader to an object in the scene.

Click on the  renderbutton.jpg   render in new window button located at the top of the screen.