Undo revision 1179431 by Vick Forcella (Talk) Each map has independent scale, position, and offset settings as of 8/13/2013 vwr 3.6+
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Revision as of 08:00, 13 August 2013
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====Positioning & Scaling Properties====
====Positioning & Scaling Properties====
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Note that each image (diffuse/texture, normal map, specular map) has its own values for these parameters.
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Note that each image (diffuse/texture, normal map, specular map) has its own values for these parameters.
:;Mapping
:;Mapping
::''Default'' or ''Planar''
::''Default'' or ''Planar''
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An image whose color data encodes changes to the "normal" for each pixel on the surface. The normal is the direction that the pixel "faces" for the purpose of determining how it is illuminated by and reflects light sources (imagine that each pixel is turned on tiny pivots). The alpha channel of the Normal Map may contain a specular exponent value that is mutilplied by the "Glossiness" parameter. A higher alpha value will result in specular highlights that are brighter and tighter. Keep in mind these are OpenGL style normal maps, where bright green is up and bright red is right. For details on what a normal map is and for a sample normal map see http://en.wikipedia.org/wiki/Normal_mapping. See also the [[#Texture Channel Encoding|Texture Channel Encoding]] table below.
An image whose color data encodes changes to the "normal" for each pixel on the surface. The normal is the direction that the pixel "faces" for the purpose of determining how it is illuminated by and reflects light sources (imagine that each pixel is turned on tiny pivots). The alpha channel of the Normal Map may contain a specular exponent value that is mutilplied by the "Glossiness" parameter. A higher alpha value will result in specular highlights that are brighter and tighter. Keep in mind these are OpenGL style normal maps, where bright green is up and bright red is right. For details on what a normal map is and for a sample normal map see http://en.wikipedia.org/wiki/Normal_mapping. See also the [[#Texture Channel Encoding|Texture Channel Encoding]] table below.
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;Positioning:The Normal Map has its own set of the same [[#Positioning & Scaling Properties|Positioning & Scaling Properties]] properties as the [[#Texture|Texture]].
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;Positioning:The Normal Map has its own set of the same [[#Positioning & Scaling Properties|Positioning & Scaling Properties]] properties as the [[#Texture|Texture]].
===Specular Map===
===Specular Map===
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The Alpha channel value of the Specular Map encodes the environment intensity. A lower value in the alpha channel will diminish the impact of the environment map reflections on the surface of the object.
The Alpha channel value of the Specular Map encodes the environment intensity. A lower value in the alpha channel will diminish the impact of the environment map reflections on the surface of the object.
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;Positioning:The Specular Map has its own set of the same [[#Positioning & Scaling Properties|Positioning & Scaling Properties]] properties as the [[#Texture|Texture]].
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;Positioning:The Specular Map has its own set of the same [[#Positioning & Scaling Properties|Positioning & Scaling Properties]] properties as the [[#Texture|Texture]].
===Texture Channel Encoding===
===Texture Channel Encoding===