Final Gathering

Final Gathering

Maya 2012 Tutorial

 

How to EnableĀ Final Gathering with Maya Mental Ray

 

 

Final Gathering is a Mental Ray rendering technique that emulates the way light works in the real world.. Whenever light strikes an object, the light changes color and bounces on to the next object. The new object is then lit with color from the previous object.

To see this in action, stand in front of the red wall on a bright sunny day. The sun strikes the red wall and anything the light bounces to turns red.

To accomplish this in Maya we must can use Global Illumination and/or Final Gathering.

 

Step One

Follow the steps in the topic, Adding Mental Ray Textures. You should have a sphere, floor and an area light in your scene.

Step Two

Render your scene by clicking the Render Current Frame icon. Notice how the sphere is dark on the bottom and not illuminated by the red floor.

Step Three

Open the Render Settings panel by clicking the Render Settings icon.

Step Four

Click the Features tab and click the Final Gathering checkbox.

Step Five

Render your current scene and notice that the red from the floor now casts onto the sphere. The additional realism does come with price in additional rendering time.

Lighting with Shaders

In this example we lit the scene with an area light. You can also light your scene by adding an object and assigning the object a Surface Shader. Change the Surface Shader Out Color and the object illuminates the scene when Final Gathering is used.

To see an example of this type of lighting, see topic, Object Lights with Mental Ray.

Can't Find Mental Ray?

If Mental Ray doesn't appear in the Render Settings, Render Using: menu, choose Window > Settings/Preferences > Plug-in Manager. Make sure Mayatomr.bundle is loaded.

More Final Gathering Settings

To access the Final Gathering settings, click the Indirect Lighting tab, Final Gathering section. The sliders and parameters can be tweaked to fine tune your lighting.

 

Shutterfly 50 Free Prints 160x600