POV-Ray : Newsgroups : povray.beta-test : pigment{ image_map } and indexed colors : pigment{ image_map } and indexed colors Server Time: 30 Mar 2017 08:42:00 GMT
  pigment{ image_map } and indexed colors  
From: Rangifer
Date: 2 May 2005 17:10:11
Insert Menu\Shapes.pov
#declare Typ=13;   // height_field_img

Png's are propably handled differently because now in beta 3 (plain 
32bit) the height field is mostly transparent (lower max_trace_level 
gives a black height field). The png uses indexed colors and if you save 
it as an RGB png the output looks the same as in 3.6 (except gamma).

-r


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