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--- transmission_maps_knald [2014/11/28 06:02]
adavies created
+++ transmission_maps_knald [2017/05/23 03:49] (current)
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 ====== Transmission Maps ======
+Designed to be used as omni-directional thickness map (with an attenuation ramp) for semi-translucent materials, Transmission are generated in much the same way as our high quality [[ambient_occlusion_maps_knald|Ambient Occlusion]] solution & it’s just as fast. Simply load a mesh into Knald (multi-million polygonal meshes are supported), check a box and then watch Knald do its magic.
+After only a couple of seconds you will be greeted by your new and beautiful texture which is viewable with real-time translucency in the 3d preview window.
+You can also generate Ambient Occlusion from high to low polygonal meshes via [[the_baker_knald|The Baker]].
+[{{https://s3.amazonaws.com/docs.knaldtech.com/docuwiki/transmission_hunter.jpg?1075|Transmission maps controlling the translucency of a mesh within the 3D Preview window((Art courtesy of Warren Boonzaaier http://www.artboonz.com/))}}]
+===== The Transmission Group's Settings =====
+----
+[{{https://s3.amazonaws.com/docs.knaldtech.com/docuwiki/transmission_knald.png?nolink|Transmission Settings}}]
+**Activate:** This check box is a toggle to enable and disable Transmission via an imported mesh. A mesh must be loaded in the 3d Preview to use this feature.
+**Attenuation:** A toggle between the Ramp Linear and Exponential Decay attenuation types.
+**Scale:** Changes the scale of the distances before mapping it to a transmission value.
+**Ramp:** Ramps the light and dark values within the Transmission map based upon the sliders value.\\ \\ \\ \\
+**Rays:** This slider is used to determine the number of samples in a discrete evaluation of the integral across the half sphere for diffuse outgoing radiance with a constant radiance field, with a minimum of 256 and maximum of 8192 rays being available.
+  * A higher number or rays will increase the quality of the Transmission at the cost of speed.
+  * We do not recommend going below a value of 512 rays as this can cause banding to appear in the map.
+  * A value of 1024-2048 or above should be perfect for production.
+**Bias:** A bias value based upon mesh density. A value of 10 should be good for most situations.
+Knald will automatically cap open meshes before rendering which in addition to producing more visially pleasing results, negates the need for any sort of major cleanup via image editing.
+[{{https://s3.amazonaws.com/docs.knaldtech.com/docuwiki/transmission_capped_new.jpg?1075|An open mesh capped pre-render((Art courtesy of Dan Roarty http://www.danroarty.com/))}}]

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