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ALS technical notes: Difference between revisions
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→Explicit lightmap
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sets up a single channel lightmap in which pixel color times the lightmap color provides the illumination. Using the multi-channel function, up to four different maps can be specified in which the (rgba) values of a pixel encode where the light falls and the associated lightmap color what color the illumination takes. Each of these maps can be switched on and off or dimmed in intensity independently. | sets up a single channel lightmap in which pixel color times the lightmap color provides the illumination. Using the multi-channel function, up to four different maps can be specified in which the (rgba) values of a pixel encode where the light falls and the associated lightmap color what color the illumination takes. Each of these maps can be switched on and off or dimmed in intensity independently. | ||
=== Grain map === | |||
<b>Note:</b> This effect requires higher than minimum model shader quality setting. | |||
The grain map sets a repeating hires overlay texture which can supply a very credible illusion of structure to a surface for cheap. The syntax exactly parallels that of the [[Model-combined_effect]] ALS grain feature described above. | |||
For instance, the following | |||
<syntaxhighlight lang="xml"> | |||
<texture n="7"> | |||
<image>Aircraft/Effects/MyGrainmap.png</image> | |||
<type>2d</type> | |||
<filter>linear-mipmap-linear</filter> | |||
<wrap-s>repeat</wrap-s> | |||
<wrap-t>repeat</wrap-t> | |||
<internal-format>normalized</internal-format> | |||
</texture> | |||
<grain-texture-enabled type="int">1</grain-texture-enabled> | |||
<grain-magnification type="float">10</grain-magnification> | |||
</syntaxhighlight> | |||
sets up a grain overlay with a 10-time higher resolution over the base texture layer. | |||
== ALS fuselage shadow effect == | == ALS fuselage shadow effect == | ||