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I can confirm both bugs. Windows XP & pov3.5
Mick
"Gilles Tran" <git### [at] wanadoo fr> wrote in message
news:3d8d447b@news.povray.org...
> The code below shows 2 potential bugs affecting transparency.
> These have been observed on 3.1 (using material_map) and 3.5, at least on
a
> Windows version, running XP.
> The first bug makes the transparent part visible. It's apparently linked
> with fog turbulence.
> The second bug makes the normals behind look weird when the transparency
> texture is scaled very unevenly (pure 100% transparent texture is not
> affected).
>
> Can other people confirm that these problems exist and that they are
really
> bugs (they were reported by a Moray/POV-Ray 3.1 user)?
>
>
> camera {location -z*35}
> light_source {(x+y-z)*50 rgb 1}
>
> fog {
> fog_type 1
> distance 30
> color rgb 1
> // turbulence makes the transparent part visible
> turbulence 0.8
> }
> sphere{0,8 pigment{rgb x+y} normal{bumps 1}}
> union{
> triangle{-x,-x+y,x+y}
> triangle{-x,x,x+y}
> hollow
> texture{
> pigment_pattern{
> bozo color_map{[0.4 rgb 1][0.4 rgb 0]}
> }
> texture_map{
> [0.5 pigment{rgb x} finish{ambient 0 diffuse 1}]
> [0.5 pigment{rgbt 1} finish{ambient 0 diffuse 0}]
> }
> // uneven scaling makes the normals behind look weird
> scale <1,1,0.001>
> }
> scale 2
> translate -z*20
>
> }
>
>
> --
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