Shadow groups

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Shadows group is a combination of '''_cs''' (cast shadows) and '''_rs''' (receive shadows) [[entity]] keys used to control how entity cast lightmap/vertex light shadows.  
 
Shadows group is a combination of '''_cs''' (cast shadows) and '''_rs''' (receive shadows) [[entity]] keys used to control how entity cast lightmap/vertex light shadows.  
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A numbers should be used for shadows groups. Blood map allows shadow groups from -127 to 127.
 
A numbers should be used for shadows groups. Blood map allows shadow groups from -127 to 127.
  

Revision as of 02:16, 21 July 2014

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Shadows group is a combination of _cs (cast shadows) and _rs (receive shadows) entity keys used to control how entity cast lightmap/vertex light shadows.

A numbers should be used for shadows groups. Blood map allows shadow groups from -127 to 127.

Shadows groups are applied during lightmapping of entity using this rules:

  1. Receive shadows is 0: object will not receive shadows from anything (occlusion test is skipped)
  2. Receive shadows is 1: only receive shadows from objects with cast shadows 1 (the worldspawn cast shadows).
  3. Receive shadows is > 1: only receive shadows from objects with same abs(cast shadows) and worldspawn.
  4. Receive shadows is < 1: only receive shadows from objects with same abs(cast shadows).
  1. Cast shadows is 0: object will not cast any shadows (not included in raytracing tree).
  2. Cast shadows is 1: only cast shadows on objects with receive shadows 1 (the worldspawn receive shadows).
  3. Cast shadows is > 1: only cast shadows on objects with same abs(receive shadows) and worldspawn.
  4. Cast shadows is < 1: only cast shadows on objects with same abs(receive shadows).

By default worldspawn and func_group have cast shadows and receive shadows 1. All other entities have cast shadows 0 and receive shadows 1.

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