View source for CLExpr

{{FilterCat6|External_filters|Plugins|Plugins_x64|Other_filters|multipurpose_Filters|Deep_color_tools}}
{{Filter3
| {{Author/tp7}}
| v0.91
|[x86] [https://github.com/tp7/CLExpr/releases CLExpr-x86.zip]
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[x64] [https://github.com/tp7/CLExpr/releases CLExpr-x64.zip]
| Multipurpose
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|6=[https://forum.doom9.org/showthread.php?p=1672638#post1672638 Doom9 Forum]}}

== Description ==
AviSynth Expr filter implemented in OpenCL.

Provides three functions:
*<code>cl_expr</code> - analogue of mt_lut
*<code>cl_exprxy</code> - analogue of mt_lutxy
*<code>cl_exprxyz</code> - analogue of mt_lutxyz

All expressions are calculated in runtime. 16-bit stacked clips are supported with the lsb parameter. Full set of masktools lut operators and functions is supported.

AviSynth+: self-registers as [[MT_MULTI_INSTANCE]]
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== Requirements ==
* [x86]: [[AviSynth+]] or [https://sourceforge.net/projects/avisynth2/ AviSynth 2.6]
* [x64]: [[AviSynth+]]
* Supported color formats: [[Y8]], [[YV12]], [[YV16]], [[YV24]]
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* [https://www.microsoft.com/en-us/download/details.aspx?id=40784 Microsoft Visual C++ 2013 Redistributable Package (x86 / x64)]
:<span style="color:red">***</span> <tt>vcredist_x86.exe</tt> is required for <tt>CLExpr-x86</tt>
:<span style="color:red">***</span> <tt>vcredist_x64.exe</tt> is required for <tt>CLExpr-x64</tt>
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== [[Script variables|Syntax and Parameters]] ==
:{{Template:FuncDef| cl_expr (clip, string "expr", string "yExpr", string "uExpr, string "vExpr", int "Y", int "U", int "V", string "chroma", bool "lsb")}}
:{{Template:FuncDef| cl_exprxy (clip, clip, string "expr", string "yExpr", string "uExpr, string "vExpr", int "Y", int "U", int "V", string "chroma", bool "lsb")}}
:{{Template:FuncDef| cl_exprxyz (clip, clip, clip, string "expr", string "yExpr", string "uExpr, string "vExpr", int "Y", int "U", int "V", string "chroma", bool "lsb")}}
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::{{Par2| |clip| }}
:::Input clip.
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::{{Par2|yExpr|string|""}}
::{{Par2|uExpr|string|""}}
::{{Par2|vExpr|string|""}}
:::Expression; full set of MaskTools2 LUT operators and functions is supported.
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::{{Par2|Y|int|3}}
::{{Par2|U|int|2}}
::{{Par2|V|int|2}}
:::Plane processing:
:::* 1 : do nothing (garbage)
:::* 2 : copy
:::* 3 : process
:::* 4 : copy second
:::* 5 : copy third
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::{{Par2|chroma|string|""}}
:::Chroma processing: <code>"process" | "copy" | "copy second" | "copy third"</code>  
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::{{Par2|lsb|bool|false}}
:::[[Stack16]] input and output, set to true to enable.
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== Examples ==
[[TODO]]
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== Changelog ==
 Version      Date            Changes<br>
 v0.91         2014/10/25      - Expressions with integer constants should now work more often.
 v0.09         2014/09/21      - Initial release

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== External Links ==
*[https://github.com/tp7/CLExpr GitHub] - Source code repository.
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