Find this section in some selected objects’ , from the (Window > General Editors > Attribute Spread Sheet) or the Rendering Flags window (Window > Rendering Editors > Rendering Flags).
The section lets you turn on or off various rendering options for selected objects.
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Turns on the shadow casting ability of the surface. To make shadows render faster, for surfaces that do not need to cast shadows,
turn off . Consider the following:
- If you want the object’s shadow to render—the shadow the object casts onto other objects—make sure is on.
- If you do not want the object’s shadow to render—the shadow the object casts onto other objects—turn off.
Note
- If you render shadows separately, use the mask channel of the rendered shadow image in your compositing software to reduce
the brightness of another image.
- When you render from the window, you can render only the selected objects by selecting .
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Turns on the shadow-catching ability of the surface.
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When on, the surface is visible in the view and renders.
Tip
A surface’s shadow renders, however, if its is off and is on. This also applies to reflections and refractions.
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If this is on, each vertex uses its own normal vector - meaning smoother transition between two faces. If this is off, one
normal vector is used for a face; 3 vertices in a triangle uses a same normal vector, resulting flat looking shading.
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When on, the surface reflects in reflective surfaces.
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When on, the surface refracts in transparent surfaces.
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Determines if the surface is double-sided. If single-sided, you can decrease memory use and use the option.
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Opposite flips the surface normals. Double-Sided must be off to set Opposite.
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When on, the surface overrides the geometry anti-aliasing settings.
Tip
Motion-blurred objects ignore any changes to the settings. The blur generally hides any aliasing artifacts.
Select one of the following options:
- Level 1
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The default. It takes 32 visibility samples.
- Level 2
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Takes 96 visibility samples.
- Level 3
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Takes 288 visibility samples.
- Level 4
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Takes 512 visibility samples.
- Level 5
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Takes 800 visibility samples. Level 5 gives the best edge anti aliasing quality, but it is also the most expensive (in both
memory and speed).
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Sets the minimum number of times Maya samples each pixel. For example, if set to 1, Maya samples each pixel once; if set to
8, Maya samples each pixel 8 times. The number of shading samples taken per pixel is limited by the number of visibility samples
performed by the computation. So, if you use (which performs 8 visibility samples per pixel), you cannot get more than 8 shading samples regardless of the attribute setting.
Since computation is very expensive, you should try adjusting the (below) first.
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Sets the maximum number of times a pixel is sampled during the second pass of a render (adaptive shading pass). The higher the number, the longer the rendering takes, but the more accurate the resulting
image is.
has an effect only when used in conjunction with . Also, depending on the requirements to compute an accurate solution, the number of taken can be less than the number of .
Tip
- Occasionally, when an object is moving, the object’s textured edges look distorted. To resolve this, try increasing the number
of .
- Sometimes, skinny highlights can exhibit roping or flickering artifacts. Try increasing the setting. You may also need to increase the setting, but you can set it on a per-object basis.
Note
The following attributes are only applicable to volume primitives and fluid shapes. They only appear in the of the shape node of a volume primitive or fluid shape.
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When on, the object overrides the global volume shading settings and you can turn on the option in window.
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Adjusts the number of samples placed inside the fog volume.
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If you set on, you can turn on option. Randomizes the samples of the volume with depth which replaces banding artifacts in volume renders with noise. The
noise can be dramatically reduced by increasing the volume samples and anti-aliasing levels.
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Override, for the selected shape node, the global maximum number of motion blur visibility samples to be taken for surfaces
during rendering.
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