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ALS technical notes: Difference between revisions
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→The grain texture and the rain effect
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[[File:Als secondary light fog.jpg|400px|ALS generic lights illuminating dense fog]] | [[File:Als secondary light fog.jpg|400px|ALS generic lights illuminating dense fog]] | ||
== The grain texture | == ALS specific features of the model effect == | ||
=== The grain texture === | |||
ALS supports a grain texture for models. This is a semi-transparent overlay texture that works just as [[Procedural Texturing#The grain texture|its equivalent for terrain texturing]] and provides the option of generating centimeter-scale details such as rust or discoloration on a surface without having to use huge textures. An example of a surface rendered with grain texture is the image of the USS Vinson flightdeck below: | ALS supports a grain texture for models. This is a semi-transparent overlay texture that works just as [[Procedural Texturing#The grain texture|its equivalent for terrain texturing]] and provides the option of generating centimeter-scale details such as rust or discoloration on a surface without having to use huge textures. An example of a surface rendered with grain texture is the image of the USS Vinson flightdeck below: | ||
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If the number is less than 0, the grain resolution is lower than the base layer. If the parameter is greater than 0, it is higher (note that in the above case, the grain is mapped to (xy) rather than (uv), hence the base size is 1 m, so the grain texture is mapped on a 10x10 m patch on the flightdeck, for which a 1024x1024 pixel texture provides ~1 cm sized details). | If the number is less than 0, the grain resolution is lower than the base layer. If the parameter is greater than 0, it is higher (note that in the above case, the grain is mapped to (xy) rather than (uv), hence the base size is 1 m, so the grain texture is mapped on a 10x10 m patch on the flightdeck, for which a 1024x1024 pixel texture provides ~1 cm sized details). | ||
=== The rain effect === | |||
Any number greater than 0 passed to | |||
<syntaxhighlight lang="xml"> | <syntaxhighlight lang="xml"> | ||
<rain-enabled type="int">2</rain-enabled> | <rain-enabled type="int">2</rain-enabled> | ||