https://wiki.luxcorerender.org/index.php?title=LuxCoreRender_Light_Groups&feed=atom&action=historyLuxCoreRender Light Groups - Revision history2024-03-29T05:50:35ZRevision history for this page on the wikiMediaWiki 1.37.6https://wiki.luxcorerender.org/index.php?title=LuxCoreRender_Light_Groups&diff=559&oldid=prevByob at 20:37, 21 March 20182018-03-21T20:37:56Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 20:37, 21 March 2018</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Light groups are intended to help setting up the right mix of lights, but for any final renderings it is advisable to adjust the light intensity values correctly before starting the rendering. The reason for this is that LuxCoreRender bases the importance of the various light sources on their initial brightness. If a light source is boosted a lot, this will increase the noise level in the image. Also adjustments to the light color are an approximation and setting the color right from the beginning will result in a more accurate rendering.</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>Light groups are intended to help setting up the right mix of lights, but for any final renderings it is advisable to adjust the light intensity values correctly before starting the rendering. The reason for this is that LuxCoreRender bases the importance of the various light sources on their initial brightness. If a light source is boosted a lot, this will increase the noise level in the image. Also adjustments to the light color are an approximation and setting the color right from the beginning will result in a more accurate rendering.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>To use light groups you first create the new groups in the exporter and then assign the light objects (or mesh lights) to their respective groups<del style="font-weight: bold; text-decoration: none;">. In the example shown below, we have a scene with lights from the sun, TV and some incandescent lamps, assigned to the groups "sun", "tv" and "spots"</del>. Assigning every light to a separate group is not required, as any light that is not assigned will be assigned automatically to the default light group.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>To use light groups you first create the new groups in the exporter and then assign the light objects (or mesh lights) to their respective groups. Assigning every light to a separate group is not required, as any light that is not assigned will be assigned automatically to the default light group.</div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">As general hints for someone planning an heavy use of light groups:</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">* The light should be always white (you can change the color of the light group after the rendering)</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">* The power of all lights should be about the same (again, you can change the power of the light group after the rendering)</ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Settings==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Settings==</div></td></tr>
</table>Byobhttps://wiki.luxcorerender.org/index.php?title=LuxCoreRender_Light_Groups&diff=366&oldid=prevPiita at 20:19, 25 December 20172017-12-25T20:19:52Z<p></p>
<table style="background-color: #fff; color: #202122;" data-mw="interface">
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">← Older revision</td>
<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 20:19, 25 December 2017</td>
</tr><tr><td colspan="2" class="diff-lineno" id="mw-diff-left-l1">Line 1:</td>
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<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Light <del style="font-weight: bold; text-decoration: none;">Groups </del>is a feature that can greatly help you composite and evaluate the lighting in your scene. It allows you to bundle one or more light sources <del style="font-weight: bold; text-decoration: none;">in </del>groups and change their intensity and <del style="font-weight: bold; text-decoration: none;">colour temperature </del>during the rendering process.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Light <ins style="font-weight: bold; text-decoration: none;">groups </ins>is a feature that can greatly help you composite and evaluate the lighting in your scene. It allows you to bundle one or more light sources <ins style="font-weight: bold; text-decoration: none;">into </ins>groups and change their intensity and <ins style="font-weight: bold; text-decoration: none;">color </ins>during the rendering process.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">LuxRender actually renders </del>the <del style="font-weight: bold; text-decoration: none;">scene using each </del>light <del style="font-weight: bold; text-decoration: none;">group and produces different images</del>. <del style="font-weight: bold; text-decoration: none;">LuxRender then provides controls </del>for <del style="font-weight: bold; text-decoration: none;">how much these images </del>are <del style="font-weight: bold; text-decoration: none;">mixed together</del>.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Light groups are intended to help setting up the right mix of lights, but for any final renderings it is advisable to adjust </ins>the light <ins style="font-weight: bold; text-decoration: none;">intensity values correctly before starting the rendering</ins>. <ins style="font-weight: bold; text-decoration: none;">The reason </ins>for <ins style="font-weight: bold; text-decoration: none;">this is that LuxCoreRender bases the importance of the various light sources on their initial brightness. If a light source is boosted a lot, this will increase the noise level in the image. Also adjustments to the light color </ins>are <ins style="font-weight: bold; text-decoration: none;">an approximation and setting the color right from the beginning will result in a more accurate rendering</ins>.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">Light </del>groups <del style="font-weight: bold; text-decoration: none;">are intended </del>to <del style="font-weight: bold; text-decoration: none;">help setting up </del>the <del style="font-weight: bold; text-decoration: none;">right mix of </del>lights, <del style="font-weight: bold; text-decoration: none;">but for any final renderings it is advisable </del>to <del style="font-weight: bold; text-decoration: none;">adjust </del>the <del style="font-weight: bold; text-decoration: none;">light intensity values correctly before starting the rendering</del>. <del style="font-weight: bold; text-decoration: none;">The reason for this is that LuxRender bases the importance of the various </del>light <del style="font-weight: bold; text-decoration: none;">sources on their initial brightness. If </del>a light <del style="font-weight: bold; text-decoration: none;">source </del>is <del style="font-weight: bold; text-decoration: none;">boosted a lot, this </del>will <del style="font-weight: bold; text-decoration: none;">increase the noise level in the image. Also adjustments </del>to the <del style="font-weight: bold; text-decoration: none;">colour temperature are an approximation and setting the colour temperature right from the beginning will result in a more accurate rendering</del>.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">To use light groups you first create the new </ins>groups <ins style="font-weight: bold; text-decoration: none;">in the exporter and then assign the light objects (or mesh lights) </ins>to <ins style="font-weight: bold; text-decoration: none;">their respective groups. In </ins>the <ins style="font-weight: bold; text-decoration: none;">example shown below, we have a scene with </ins>lights <ins style="font-weight: bold; text-decoration: none;">from the sun, TV and some incandescent lamps</ins>, <ins style="font-weight: bold; text-decoration: none;">assigned </ins>to the <ins style="font-weight: bold; text-decoration: none;">groups "sun", "tv" and "spots"</ins>. <ins style="font-weight: bold; text-decoration: none;">Assigning every </ins>light <ins style="font-weight: bold; text-decoration: none;">to </ins>a <ins style="font-weight: bold; text-decoration: none;">separate group is not required, as any </ins>light <ins style="font-weight: bold; text-decoration: none;">that </ins>is <ins style="font-weight: bold; text-decoration: none;">not assigned </ins>will <ins style="font-weight: bold; text-decoration: none;">be assigned automatically </ins>to the <ins style="font-weight: bold; text-decoration: none;">default light group</ins>.</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>==<del style="font-weight: bold; text-decoration: none;">Usage</del>==</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>==<ins style="font-weight: bold; text-decoration: none;">Settings</ins>==</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">The normal procedure for creating light groups is to select each light object (or mesh emitter) and assign it to a group. In the example shown below, we have a scene with lights from the sun, TV and some incandescent lamps, assigned to the groups "sun", "tv" and "spots". When exported and rendered, the light groups interface can be accessed by clicking the "LightGroups" tab.</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">==The Interface==</del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">'''Gain:''' This controls </ins>the <ins style="font-weight: bold; text-decoration: none;">intensity of the lights </ins>in <ins style="font-weight: bold; text-decoration: none;">the current </ins>light group<ins style="font-weight: bold; text-decoration: none;">. Note that the Gain value does not control the actual light intensities </ins>in the scene<ins style="font-weight: bold; text-decoration: none;">; it simply controls how much of the lights in this group contribute to the render. That is increasing the Gain value will make the already rendered samples of that light brighter, but it will not make the light reach further away from the source</ins>. <ins style="font-weight: bold; text-decoration: none;"><!-- explain this better --></ins></div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">When viewing </del>the <del style="font-weight: bold; text-decoration: none;">"LightGroups" tab </del>in <del style="font-weight: bold; text-decoration: none;">LuxGUI, you should see a panel for each </del>light group in the scene.</div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>'''<del style="font-weight: bold; text-decoration: none;">Group</del>:''' <del style="font-weight: bold; text-decoration: none;">Each panel has a title bar. The ''Group'' field shows </del>the <del style="font-weight: bold; text-decoration: none;">name </del>of the light <del style="font-weight: bold; text-decoration: none;">group </del>that <del style="font-weight: bold; text-decoration: none;">you're working with</del>.</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>'''<ins style="font-weight: bold; text-decoration: none;">Color</ins>:''' <ins style="font-weight: bold; text-decoration: none;">This modifies </ins>the <ins style="font-weight: bold; text-decoration: none;">color </ins>of the light<ins style="font-weight: bold; text-decoration: none;">. Note </ins>that <ins style="font-weight: bold; text-decoration: none;">this is a multiplier</ins>. </div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br/></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>'''<del style="font-weight: bold; text-decoration: none;">On/Off Button:''' On the right of the title bar is the On/Off button, which turns the group on or off.</del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>'''<ins style="font-weight: bold; text-decoration: none;">Temperature</ins>:''' This <ins style="font-weight: bold; text-decoration: none;">modifies </ins>the color of the light <ins style="font-weight: bold; text-decoration: none;">based on temperature values</ins>. This <ins style="font-weight: bold; text-decoration: none;">is </ins>also <ins style="font-weight: bold; text-decoration: none;">multiplied </ins>to the <ins style="font-weight: bold; text-decoration: none;">original </ins>color of the light.</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">'''Minimize:''' This button minimizes the controls of the light groups to make the interface tidier.</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">'''Gain:''' The Gain slider controls the intensity of the lights in the current light group. Note of course that the image will be tone-mapped to accommodate the new Gain value. Also note that the Gain value does not control the actual light intensities in the scene file; it simply controls how much of the image containing the light group is mixed with the other images. </del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">'''RGB</del>:''' This <del style="font-weight: bold; text-decoration: none;">check box allows you to change </del>the color of <del style="font-weight: bold; text-decoration: none;">the overall lights in </del>the light <del style="font-weight: bold; text-decoration: none;">group; click the white square box to choose a different color</del>.</div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">'''Black Body Temperature:''' </del>This <del style="font-weight: bold; text-decoration: none;">check box and slider </del>also <del style="font-weight: bold; text-decoration: none;">allow you </del>to <del style="font-weight: bold; text-decoration: none;">modify </del>the color of the light <del style="font-weight: bold; text-decoration: none;">group, this time with a temperature setting. Note that this slider is not the same as the one in the exporter; it adds to the effect. Think of it as a fine tuner for the lights' temperature.</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">[[Image:Light_groups.png|frame|left|light groups interface]]</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"><br clear="all" /></del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">[[Image:Lightgroups_lamps.jpg|frame|left|lamps light source]]</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"><br clear="all" /></del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">[[Image:Lightgroups_tv.jpg|frame|left|light groups interface (image on the television: (c) copyright Blender Foundation, www.bigbuckbunny.org)]]</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"><br clear="all" /></del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">[[Image:Lightgroups_sun.jpg|frame|left|sun light source]]</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"><br clear="all" /></del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">[[Image:Lightgroups_sun2.jpg|frame|left|sun light source, adjusted colour temperature]]</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"><br clear="all" /></del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div> </div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;">[[Image:Lightgroups_combined</del>.<del style="font-weight: bold; text-decoration: none;">jpg|frame|left|combined image]]</del></div></td><td colspan="2" class="diff-side-added"></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div><del style="font-weight: bold; text-decoration: none;"><br clear="all" /></del></div></td><td colspan="2" class="diff-side-added"></td></tr>
</table>Piitahttps://wiki.luxcorerender.org/index.php?title=LuxCoreRender_Light_Groups&diff=259&oldid=prevPiita: Created page with "Light Groups is a feature that can greatly help you composite and evaluate the lighting in your scene. It allows you to bundle one or more light sources in groups and change t..."2017-12-16T18:25:56Z<p>Created page with "Light Groups is a feature that can greatly help you composite and evaluate the lighting in your scene. It allows you to bundle one or more light sources in groups and change t..."</p>
<p><b>New page</b></p><div>Light Groups is a feature that can greatly help you composite and evaluate the lighting in your scene. It allows you to bundle one or more light sources in groups and change their intensity and colour temperature during the rendering process.<br />
<br />
LuxRender actually renders the scene using each light group and produces different images. LuxRender then provides controls for how much these images are mixed together.<br />
<br />
Light groups are intended to help setting up the right mix of lights, but for any final renderings it is advisable to adjust the light intensity values correctly before starting the rendering. The reason for this is that LuxRender bases the importance of the various light sources on their initial brightness. If a light source is boosted a lot, this will increase the noise level in the image. Also adjustments to the colour temperature are an approximation and setting the colour temperature right from the beginning will result in a more accurate rendering.<br />
<br />
==Usage==<br />
The normal procedure for creating light groups is to select each light object (or mesh emitter) and assign it to a group. In the example shown below, we have a scene with lights from the sun, TV and some incandescent lamps, assigned to the groups "sun", "tv" and "spots". When exported and rendered, the light groups interface can be accessed by clicking the "LightGroups" tab.<br />
<br />
==The Interface==<br />
When viewing the "LightGroups" tab in LuxGUI, you should see a panel for each light group in the scene.<br />
<br />
'''Group:''' Each panel has a title bar. The ''Group'' field shows the name of the light group that you're working with.<br />
<br />
'''On/Off Button:''' On the right of the title bar is the On/Off button, which turns the group on or off.<br />
<br />
'''Minimize:''' This button minimizes the controls of the light groups to make the interface tidier.<br />
<br />
'''Gain:''' The Gain slider controls the intensity of the lights in the current light group. Note of course that the image will be tone-mapped to accommodate the new Gain value. Also note that the Gain value does not control the actual light intensities in the scene file; it simply controls how much of the image containing the light group is mixed with the other images. <br />
<br />
'''RGB:''' This check box allows you to change the color of the overall lights in the light group; click the white square box to choose a different color.<br />
<br />
'''Black Body Temperature:''' This check box and slider also allow you to modify the color of the light group, this time with a temperature setting. Note that this slider is not the same as the one in the exporter; it adds to the effect. Think of it as a fine tuner for the lights' temperature.<br />
<br />
[[Image:Light_groups.png|frame|left|light groups interface]]<br />
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<br />
[[Image:Lightgroups_lamps.jpg|frame|left|lamps light source]]<br />
<br clear="all" /><br />
<br />
[[Image:Lightgroups_tv.jpg|frame|left|light groups interface (image on the television: (c) copyright Blender Foundation, www.bigbuckbunny.org)]]<br />
<br clear="all" /><br />
<br />
[[Image:Lightgroups_sun.jpg|frame|left|sun light source]]<br />
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[[Image:Lightgroups_sun2.jpg|frame|left|sun light source, adjusted colour temperature]]<br />
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<br />
[[Image:Lightgroups_combined.jpg|frame|left|combined image]]<br />
<br clear="all" /></div>Piita