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TouchDesigner Documentation MCP Server v2.3 - Pure MCP server for VS Code/Codium with comprehensive operator documentation for 629 operators + 7 tutorials across all categories (TOP, CHOP, SOP, DAT, MAT, COMP, POP). Features experimental POP operators wit
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<h1 id="firstHeading" class="firstHeading mw-first-heading"><span class="mw-page-title-namespace">Experimental</span><span class="mw-page-title-separator">:</span><span class="mw-page-title-main">Null POP</span></h1>
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<div id="mw-content-text" class="mw-body-content mw-content-ltr" lang="en-CA" dir="ltr"><div class="mw-parser-output"><div class="mw-parser-output"><h2><span class="mw-headline" id="Summary"><div class="sectionBarPOP">Summary</div></span><span class="mw-editsection"><span class="mw-editsection-bracket">[</span><a href="/index.php?title=Template:Summary&action=edit&section=T-1" title="Edit section: Summary">edit</a><span class="mw-editsection-bracket">]</span></span></h2>
<p>The Null POP does nothing - it passes its input to its output unchanged. It does not consume any CPU or <span class="mw-lingo-term" data-lingo-term-id="52f9ec21735243ad9917cda3ca077d32">GPU</span> memory.
</p><p>It is used as a placeholder, and it is best practice while you are working on building a chain of POPs, to put a Null POP at the end, name it something meaningful, and then refer to the Null POP farther downstream, so you can add in new POPs in the chain and not have to think about where the Null is connected.
</p><p>Note that POPs in general will not consume any memory for attributes that are unchanged by a POP. For example if the input to a Math POP has <code>P</code>, <code>Tex</code> and <code>Color</code> attributes, and the Math POP affect only the <code>Color</code> attribute, it will not copy the memory for the <code>P</code> and <code>Tex</code> attributes - it will "point to" or retrieve <code>P</code> and <code>Tex</code> from whichever POP they were last modified or created. The popup info (on the middle-click button) on a POP shows which attributes are references (have a <code>(r)</code> beside them).
</p><p><a href="/File:PythonIcon.png" class="image"><img alt="PythonIcon.png" src="/images/c/c2/PythonIcon.png" decoding="async" width="20" height="20"></a><a href="/NullPOP_Class" title="NullPOP Class">nullPOP_Class</a>
</p>
<div id="toc" class="toc" role="navigation" aria-labelledby="mw-toc-heading"><input type="checkbox" role="button" id="toctogglecheckbox" class="toctogglecheckbox" style="display:none"><div class="toctitle" lang="en-CA" dir="ltr"><h2 id="mw-toc-heading">Contents</h2><span class="toctogglespan"><label class="toctogglelabel" for="toctogglecheckbox"></label></span></div>
<ul><li class="toclevel-1"><a href="#Summary"><span class="tocnumber">1</span> <span class="toctext">Summary</span></a></li>
<li class="toclevel-1"><a href="#Parameters_-_Null_Page"><span class="tocnumber">2</span> <span class="toctext">Parameters - Null Page</span></a></li>
<li class="toclevel-1"><a href="#Operator_Inputs"><span class="tocnumber">3</span> <span class="toctext">Operator Inputs</span></a></li>
<li class="toclevel-1"><a href="#Info_CHOP_Channels"><span class="tocnumber">4</span> <span class="toctext">Info CHOP Channels</span></a>
<ul><li class="toclevel-2"><a href="#Common_POP_Info_Channels"><span class="tocnumber">4.1</span> <span class="toctext">Common POP Info Channels</span></a></li>
<li class="toclevel-2"><a href="#Common_Operator_Info_Channels"><span class="tocnumber">4.2</span> <span class="toctext">Common Operator Info Channels</span></a></li>
</ul></li>
</ul></div>
<p><br></p>
<h2><span class="mw-headline" id="Parameters_-_Null_Page"><div class="sectionBarPOP">Parameters - Null Page</div></span></h2>
<h2><span class="mw-headline" id="Operator_Inputs"><div class="sectionBarPOP">Operator Inputs</div></span></h2>
<ul><li><span class="parNamePOP">Input 0: </span> -</li></ul><p><br></p>
<h2><span class="mw-headline" id="Info_CHOP_Channels"><div class="sectionBarPOP">Info <span class="mw-lingo-term" data-lingo-term-id="8b9d2cce2836537aabe6f2e0dd5da293">CHOP</span> Channels</div></span></h2>
<p>Extra Information for the Null POP can be accessed via an <a href="/Info_CHOP" title="Info CHOP">Info CHOP</a>.
<i></i>
</p>
<h3><span class="mw-headline" id="Common_POP_Info_Channels"><div class="customBar">Common POP Info Channels</div></span></h3>
<h3><span class="mw-headline" id="Common_Operator_Info_Channels"><div class="customBar">Common Operator Info Channels</div></span></h3>
<ul><li><span class="parName">total_cooks</span> - Number of times the operator has cooked since the process started.</li></ul><ul><li><span class="parName">cook_time</span> - Duration of the last cook in milliseconds.</li></ul><ul><li><span class="parName">cook_frame</span> - Frame number when this operator was last cooked relative to the component timeline.</li></ul><ul><li><span class="parName">cook_abs_frame</span> - Frame number when this operator was last cooked relative to the absolute time.</li></ul><ul><li><span class="parName">cook_start_time</span> - Time in milliseconds at which the operator started cooking in the frame it was cooked.</li></ul><ul><li><span class="parName">cook_end_time</span> - Time in milliseconds at which the operator finished cooking in the frame it was cooked.</li></ul><ul><li><span class="parName">cooked_this_frame</span> - 1 if operator was cooked this frame.</li></ul><ul><li><span class="parName">warnings</span> - Number of warnings in this operator if any.</li></ul><ul><li><span class="parName">errors</span> - Number of errors in this operator if any.</li></ul><p><br>
TouchDesigner Build: <select onchange="location=this.value;"><option value="https://docs.derivative.ca/Experimental:Null_POP">Latest</option>\n<option value="https://docs.derivative.ca/Experimental:Null_POP?oldid=31942">wikieditor</option><option value="https://docs.derivative.ca/Experimental:Null_POP?oldid=32837">wikieditor</option><option value="https://docs.derivative.ca/Experimental:Null_POP?oldid=32838">wikieditor</option><option value="https://docs.derivative.ca/Experimental:Null_POP?oldid=32839">wikieditor</option></select></p>
<table><tbody><tr><th class="navBox">POPs
</th></tr><tr><td><span class="catList navigation-not-searchable"><a href="/Experimental:Accumulate_POP" title="Experimental:Accumulate POP">Experimental:Accumulate </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Analyze_POP" title="Experimental:Analyze POP">Experimental:Analyze </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Attribute_Combine_POP" title="Experimental:Attribute Combine POP">Experimental:Attribute Combine </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Attribute_Convert_POP" title="Experimental:Attribute Convert POP">Experimental:Attribute Convert </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Attribute_POP" title="Experimental:Attribute POP">Experimental:Attribute </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Blend_POP" title="Experimental:Blend POP">Experimental:Blend </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Box_POP" title="Experimental:Box POP">Experimental:Box </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Cache_Blend_POP" title="Experimental:Cache Blend POP">Experimental:Cache Blend </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Cache_POP" title="Experimental:Cache POP">Experimental:Cache </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Cache_Select_POP" title="Experimental:Cache Select POP">Experimental:Cache Select </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:CHOP_to_POP" title="Experimental:CHOP to POP">Experimental:CHOP to </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Circle_POP" title="Experimental:Circle POP">Experimental:Circle </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Convert_POP" title="Experimental:Convert POP">Experimental:Convert </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Copy_POP" title="Experimental:Copy POP">Experimental:Copy </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:CPlusPlus_POP" title="Experimental:CPlusPlus POP">Experimental:CPlusPlus </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Curve_POP" title="Experimental:Curve POP">Experimental:Curve </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:DAT_to_POP" title="Experimental:DAT to POP">Experimental:DAT to </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Delete_POP" title="Experimental:Delete POP">Experimental:Delete </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Dimension_POP" title="Experimental:Dimension POP">Experimental:Dimension </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:DMX_Fixture_POP" title="Experimental:DMX Fixture POP">Experimental:DMX Fixture </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:DMX_Out_POP" title="Experimental:DMX Out POP">Experimental:DMX Out </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Extrude_POP" title="Experimental:Extrude POP">Experimental:Extrude </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Facet_POP" title="Experimental:Facet POP">Experimental:Facet </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Feedback_POP" title="Experimental:Feedback POP">Experimental:Feedback </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Field_POP" title="Experimental:Field POP">Experimental:Field </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:File_In_POP" title="Experimental:File In POP">Experimental:File In </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Force_POP" title="Experimental:Force POP">Experimental:Force </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:GLSL_Advanced_POP" title="Experimental:GLSL Advanced POP">Experimental:GLSL Advanced </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:GLSL_Copy_POP" title="Experimental:GLSL Copy POP">Experimental:GLSL Copy </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:GLSL_Create_POP" title="Experimental:GLSL Create POP">Experimental:GLSL Create </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:GLSL_POP" title="Experimental:GLSL POP">Experimental:GLSL </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:GLSL_Select_POP" title="Experimental:GLSL Select POP">Experimental:GLSL Select </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Grid_POP" title="Experimental:Grid POP">Experimental:Grid </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Group_POP" title="Experimental:Group POP">Experimental:Group </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Histogram_POP" title="Experimental:Histogram POP">Experimental:Histogram </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Import_Select_POP" title="Experimental:Import Select POP">Experimental:Import Select </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:In_POP" title="Experimental:In POP">Experimental:In </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Limit_POP" title="Experimental:Limit POP">Experimental:Limit </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Line_Break_POP" title="Experimental:Line Break POP">Experimental:Line Break </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Line_Divide_POP" title="Experimental:Line Divide POP">Experimental:Line Divide </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Line_Metrics_POP" title="Experimental:Line Metrics POP">Experimental:Line Metrics </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Line_POP" title="Experimental:Line POP">Experimental:Line </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Line_Smooth_POP" title="Experimental:Line Smooth POP">Experimental:Line Smooth </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Line_Thick_POP" title="Experimental:Line Thick POP">Experimental:Line Thick </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Lookup_Attribute_POP" title="Experimental:Lookup Attribute POP">Experimental:Lookup Attribute </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Lookup_Channel_POP" title="Experimental:Lookup Channel POP">Experimental:Lookup Channel </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Lookup_Texture_POP" title="Experimental:Lookup Texture POP">Experimental:Lookup Texture </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Math_Combine_POP" title="Experimental:Math Combine POP">Experimental:Math Combine </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Math_Mix_POP" title="Experimental:Math Mix POP">Experimental:Math Mix </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Math_POP" title="Experimental:Math POP">Experimental:Math </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Merge_POP" title="Experimental:Merge POP">Experimental:Merge </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Neighbor_POP" title="Experimental:Neighbor POP">Experimental:Neighbor </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Noise_POP" title="Experimental:Noise POP">Experimental:Noise </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Normal_POP" title="Experimental:Normal POP">Experimental:Normal </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Normalize_POP" title="Experimental:Normalize POP">Experimental:Normalize </a></span>• <span class="catList navigation-not-searchable"><a class="mw-selflink selflink">Experimental:Null </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Out_POP" title="Experimental:Out POP">Experimental:Out </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Particle_POP" title="Experimental:Particle POP">Experimental:Particle </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Pattern_POP" title="Experimental:Pattern POP">Experimental:Pattern </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Phaser_POP" title="Experimental:Phaser POP">Experimental:Phaser </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Point_File_In_POP" title="Experimental:Point File In POP">Experimental:Point File In </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Point_Generator_POP" title="Experimental:Point Generator POP">Experimental:Point Generator </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Point_POP" title="Experimental:Point POP">Experimental:Point </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Points,_Vertices_and_Primitives_in_POPs" title="Experimental:Points, Vertices and Primitives in POPs">Experimental:Points, Vertices and Primitives in s </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Polygonize_POP" title="Experimental:Polygonize POP">Experimental:Polygonize </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Primitive_POP" title="Experimental:Primitive POP">Experimental:Primitive </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Projection_POP" title="Experimental:Projection POP">Experimental:Projection </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Proximity_POP" title="Experimental:Proximity POP">Experimental:Proximity </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Quantize_POP" title="Experimental:Quantize POP">Experimental:Quantize </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Random_POP" title="Experimental:Random POP">Experimental:Random </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Ray_POP" title="Experimental:Ray POP">Experimental:Ray </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Rectangle_POP" title="Experimental:Rectangle POP">Experimental:Rectangle </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:ReRange_POP" title="Experimental:ReRange POP">Experimental:ReRange </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Revolve_POP" title="Experimental:Revolve POP">Experimental:Revolve </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Select_POP" title="Experimental:Select POP">Experimental:Select </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Skin_Deform_POP" title="Experimental:Skin Deform POP">Experimental:Skin Deform </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Skin_POP" title="Experimental:Skin POP">Experimental:Skin </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:SOP_to_POP" title="Experimental:SOP to POP">Experimental:SOP to </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Sort_POP" title="Experimental:Sort POP">Experimental:Sort </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Sphere_POP" title="Experimental:Sphere POP">Experimental:Sphere </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Sprinkle_POP" title="Experimental:Sprinkle POP">Experimental:Sprinkle </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Subdivide_POP" title="Experimental:Subdivide POP">Experimental:Subdivide </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Switch_POP" title="Experimental:Switch POP">Experimental:Switch </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Texture_Map_POP" title="Experimental:Texture Map POP">Experimental:Texture Map </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:TOP_to_POP" title="Experimental:TOP to POP">Experimental:TOP to </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Topology_POP" title="Experimental:Topology POP">Experimental:Topology </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Torus_POP" title="Experimental:Torus POP">Experimental:Torus </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Trail_POP" title="Experimental:Trail POP">Experimental:Trail </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Transform_POP" title="Experimental:Transform POP">Experimental:Transform </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Trig_POP" title="Experimental:Trig POP">Experimental:Trig </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Tube_POP" title="Experimental:Tube POP">Experimental:Tube </a></span>• <span class="catList navigation-not-searchable"><a href="/Experimental:Twist_POP" title="Experimental:Twist POP">Experimental:Twist </a></span>
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<p>The Graphics Processing Unit. This is the high-speed, many-core processor of the graphics card/chip that takes geometry, images and data from the CPU and creates images and processed data.
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<p>An <a href="/Operator_Family" title="Operator Family">Operator Family</a> which operate on <a href="/Channel" title="Channel">Channels</a> (a sequence of numbers (<a href="/Sample" title="Sample">Samples</a>)) which are used for animation, audio, mathematics, simulation, logic, UI construction, and data streamed from/to devices and protocols.
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