$alphatest: Difference between revisions
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{{ | {{langsp|title=$alphatest}} | ||
'''<code style="color:white">$alphatest</code>''' is a [[material]] [[shader]] parameter avaliable in all [[Source]] games. It specifies a mask to use to determine binary [[opacity]]. White represents fully opaque, while black represents fully transparent. Any values in-between are rounded to either 0 or 1. This effect is similar to <code>[[$translucent]]</code>, except that it can not be semi-opaque, is much faster to render, and the engine can sort it properly when layered. | '''<code style="color:white">$alphatest</code>''' is a [[material]] [[shader]] parameter avaliable in all [[Source]] games. It specifies a mask to use to determine binary [[opacity]]. White represents fully opaque, while black represents fully transparent. Any values in-between are rounded to either 0 or 1. This effect is similar to <code>[[$translucent]]</code>, except that it can not be semi-opaque, is much faster to render, and the engine can sort it properly when layered. | ||
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*<code>[[$distancealpha]]</code> | *<code>[[$distancealpha]]</code> | ||
*<code>[[$vertexalpha]]</code> | *<code>[[$vertexalpha]]</code> | ||
Revision as of 12:19, 9 January 2024
$alphatest is a material shader parameter avaliable in all Source games. It specifies a mask to use to determine binary opacity. White represents fully opaque, while black represents fully transparent. Any values in-between are rounded to either 0 or 1. This effect is similar to $translucent, except that it can not be semi-opaque, is much faster to render, and the engine can sort it properly when layered.
Syntax
VMT example
Additional parameters
Comparison
$translucent |
$alphatest
|
|---|---|
Notice how the $alphatest right circle hardly changes.