Supported Opengl Features; To Use Wireframe For Previews; To Use Adaptive Resolution For Previews - Adobe AFTER EFFECTS 7.0 Manual

Supported OpenGL features

OpenGL preview in After Effects supports the following features:
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Shadows, except point light shadows (Colored shadows appear gray.)
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Lights (eight maximum)
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Masks
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Alpha channels
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Track mattes
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Intersecting layers
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Transformations for 2D and 3D layers
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GPU-accelerated effects, including Brightness & Contrast, Color Balance, Curves, Hue/Saturation, Levels,
Gaussian Blur, Fast Blur, Sharpen, Channel Blur, Directional Blur, Tint, Invert, Alpha Levels, and Noise.
OpenGL preview in After Effects also supports the following features when OpenGL Quality is set to More Accurate:
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All blending modes except Dissolve and Dancing Dissolve
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Metal property settings for 3D layers
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Cone feather settings for light layers
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2D motion blur
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Adjustment layers
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Antialiasing
Feature support in After Effects is also dependent on the OpenGL hardware; contact the hardware manufacturer for
details. For information regarding specific OpenGL hardware, see the After Effects section of the Adobe website.

To use Wireframe for previews

Wireframe mode represents each layer as a simple rectangle, which increases playback speed and allows you to
reposition a high-resolution or data-intensive layer quickly. If a still-image layer has a mask or an alpha channel
created in another program, the layer is represented by the outline of the mask or alpha channel. You can apply
Wireframe mode to a single Composition view without affecting other views of the same composition.
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Click the Fast Previews button in the Composition panel and select Wireframe from the menu.

To use Adaptive Resolution for previews

The Adaptive Resolution setting decreases the preview resolution of layers when necessary to maintain playback
speed. Use this option when you want to preview complex or animated effects or when you want to preview movies
and layers that require extensive memory.
1 Choose Edit > Preferences > Previews (Windows) or After Effects > Preferences > Previews (Mac OS).
2 From the Adaptive Resolution Limit menu, choose the maximum reduction in size relative to the current compo-
sition resolution.
3 Click the Fast Previews button in the Composition panel and select Adaptive Resolution from the menu.
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User Guide