/ 2026-04-18T20:53:15+00:00 / /lib/tpl/dazdoccenter/images/favicon.ico text/html 2015-11-19T16:48:04+00:00 /public/software/dazstudio/4/referenceguide/interface/panes/shader_mixer/bricks/dzocclusionbrick/start <h1 id="occlusion">Occlusion</h1> <div class="level1"> <p> <a href="/public/software/dazstudio/4/referenceguide/interface/panes/shader_mixer/brickyard/start" class="wikilink1" title="public:software:dazstudio:4:referenceguide:interface:panes:shader_mixer:brickyard:start">Brickyard</a> : <a href="/public/software/dazstudio/4/referenceguide/interface/panes/shader_mixer/brickyard/functions/start" class="wikilink1" title="public:software:dazstudio:4:referenceguide:interface:panes:shader_mixer:brickyard:functions:start">Functions</a> &gt; <a href="/public/software/dazstudio/4/referenceguide/interface/panes/shader_mixer/brickyard/functions/lighting/start" class="wikilink1" title="public:software:dazstudio:4:referenceguide:interface:panes:shader_mixer:brickyard:functions:lighting:start">Lighting</a> &gt; <a href="/public/software/dazstudio/4/referenceguide/interface/panes/shader_mixer/brickyard/functions/lighting/ray_tracing/start" class="wikilink2" title="public:software:dazstudio:4:referenceguide:interface:panes:shader_mixer:brickyard:functions:lighting:ray_tracing:start" rel="nofollow">ray tracing</a> </p> <p> The Occlusion brick returns the highest value (lightest shade of grey) where surfaces are “occluded” by other objects in the scene. Useful as an alpha map for adding grime in the creases of a surface, for example. This brick can also be used as part of a shader to emulate snow or dust on an upper surface of several objects in a scene, some of which occlude other objects, by supplying an Occlusion Vector. </p> </div> <h2 id="snapshot">Snapshot</h2> <div class="level2"> <p> <a href="/_media/public/software/dazstudio/4/referenceguide/interface/panes/shader_mixer/bricks/dzocclusionbrick/lightingocclusion.png" class="media" target="_blank" title="public:software:dazstudio:4:referenceguide:interface:panes:shader_mixer:bricks:dzocclusionbrick:lightingocclusion.png" rel="noopener"><img src="/_media/public/software/dazstudio/4/referenceguide/interface/panes/shader_mixer/bricks/dzocclusionbrick/lightingocclusion.png" class="media" alt="" /></a> </p> </div> <h2 id="parameters">Parameters</h2> <div class="level2"> </div> <h3 id="outputs">Outputs</h3> <div class="level3"> <ul> <li class="level1"><div class="li"> <strong>Occlusion :</strong> <a href="/public/software/dazstudio/4/referenceguide/interface/panes/shader_mixer/shader_workspace/brick_anatomy/start#type" class="wikilink1" title="public:software:dazstudio:4:referenceguide:interface:panes:shader_mixer:shader_workspace:brick_anatomy:start">Float</a> - Description…</div> </li> <li class="level1"><div class="li"> <strong>Avg Environmental Direction :</strong> <a href="/public/software/dazstudio/4/referenceguide/interface/panes/shader_mixer/shader_workspace/brick_anatomy/start#type" class="wikilink1" title="public:software:dazstudio:4:referenceguide:interface:panes:shader_mixer:shader_workspace:brick_anatomy:start">Vector</a> - Description…</div> </li> </ul> </div> <h3 id="inputs">Inputs</h3> <div class="level3"> <ul> <li class="level1"><div class="li"> <strong>Occlusion Vector^{<a href="#fn__1" id="fnt__1" class="fn_top">1)</a>} :</strong> <a href="/public/software/dazstudio/4/referenceguide/interface/panes/shader_mixer/shader_workspace/brick_anatomy/start#type" class="wikilink1" title="public:software:dazstudio:4:referenceguide:interface:panes:shader_mixer:shader_workspace:brick_anatomy:start">Normal</a> - Description…</div> </li> <li class="level1"><div class="li"> <strong>P^{<a href="#fn__2" id="fnt__2" class="fn_top">2)</a>} :</strong> <a href="/public/software/dazstudio/4/referenceguide/interface/panes/shader_mixer/shader_workspace/brick_anatomy/start#type" class="wikilink1" title="public:software:dazstudio:4:referenceguide:interface:panes:shader_mixer:shader_workspace:brick_anatomy:start">Point</a> - Description…</div> </li> <li class="level1"><div class="li"> <strong>Strength :</strong> <a href="/public/software/dazstudio/4/referenceguide/interface/panes/shader_mixer/shader_workspace/brick_anatomy/start#type" class="wikilink1" title="public:software:dazstudio:4:referenceguide:interface:panes:shader_mixer:shader_workspace:brick_anatomy:start">Float</a> - Description…</div> </li> <li class="level1"><div class="li"> <strong>Axis :</strong> <a href="/public/software/dazstudio/4/referenceguide/interface/panes/shader_mixer/shader_workspace/brick_anatomy/start#type" class="wikilink1" title="public:software:dazstudio:4:referenceguide:interface:panes:shader_mixer:shader_workspace:brick_anatomy:start">Vector</a> - Description…</div> </li> </ul> <ul> <li class="level1"><div class="li"> <strong>Max Distance :</strong> Description…</div> </li> <li class="level1"><div class="li"> <strong>Cone Angle :</strong> Description…</div> </li> <li class="level1"><div class="li"> <strong>Samples :</strong> Description…</div> </li> <li class="level1"><div class="li"> <strong>Bias :</strong> Description…</div> </li> </ul> </div> <h2 id="examples">Examples</h2> <div class="level2"> </div> <h3 id="in_a_material">In a Material</h3> <div class="level3"> <ul> <li class="level1"><div class="li"> <br/> <a href="/_media/public/software/dazstudio/4/referenceguide/interface/panes/shader_mixer/bricks/dzocclusionbrick/lightingocclusion.jpg" class="media" target="_blank" title="public:software:dazstudio:4:referenceguide:interface:panes:shader_mixer:bricks:dzocclusionbrick:lightingocclusion.jpg" rel="noopener"><img src="/_media/public/software/dazstudio/4/referenceguide/interface/panes/shader_mixer/bricks/dzocclusionbrick/lightingocclusion.jpg" class="media" alt="" /></a></div> </li> <li class="level1"><div class="li"> An example using occlusion to provide snow : ^{<a href="#fn__3" id="fnt__3" class="fn_top">3)</a>}<br/> <a href="/_media/public/software/dazstudio/4/referenceguide/interface/panes/shader_mixer/bricks/dzocclusionbrick/lightingocclusionsnowexample_justthebast.jpg" class="media" target="_blank" title="public:software:dazstudio:4:referenceguide:interface:panes:shader_mixer:bricks:dzocclusionbrick:lightingocclusionsnowexample_justthebast.jpg" rel="noopener"><img src="/_media/public/software/dazstudio/4/referenceguide/interface/panes/shader_mixer/bricks/dzocclusionbrick/lightingocclusionsnowexample_justthebast.jpg?w=500&amp;tok=ebbeae" class="media" alt="" width="500" /></a></div> </li> <li class="level1"><div class="li"> <br/> <a href="/_media/public/software/dazstudio/4/referenceguide/interface/panes/shader_mixer/bricks/dzocclusionbrick/lightingocclusionsnowexample_network_justthebast.png" class="media" target="_blank" title="public:software:dazstudio:4:referenceguide:interface:panes:shader_mixer:bricks:dzocclusionbrick:lightingocclusionsnowexample_network_justthebast.png" rel="noopener"><img src="/_media/public/software/dazstudio/4/referenceguide/interface/panes/shader_mixer/bricks/dzocclusionbrick/lightingocclusionsnowexample_network_justthebast.png?w=500&amp;tok=63a007" class="media" alt="" width="500" /></a></div> </li> </ul> </div> <div class="footnotes"> <div class="fn">^{<a href="#fnt__1" id="fn__1" class="fn_bot">1)</a>} , ^{<a href="#fnt__2" id="fn__2" class="fn_bot">2)</a>} <div class="content">Available when <strong>Show Advanced</strong> is checked in the <a href="/public/software/dazstudio/4/referenceguide/interface/panes/shader_mixer/shader_workspace/brick_anatomy/start#title_bar" class="wikilink1" title="public:software:dazstudio:4:referenceguide:interface:panes:shader_mixer:shader_workspace:brick_anatomy:start">Brick Option Menu</a>.</div></div> <div class="fn">^{<a href="#fnt__3" id="fn__3" class="fn_bot">3)</a>} <div class="content">courtesy JustTheBast</div></div> </div>