Gilles Tran <tra### [at] inapginrafr> wrote:
> Actually these sky images are fully spherical, the website just doesn't show
> the bottom half(pure black of course) in the previews...

  I see. In that case it's enough to do:

sky_sphere
{ pigment { image_map { jpeg "whatever" map_type 1 } }
}

-- 
#macro N(D)#if(D>99)cylinder{M()#local D=div(D,104);M().5,2pigment{rgb M()}}
N(D)#end#end#macro M()<mod(D,13)-6mod(div(D,13)8)-3,10>#end blob{
N(11117333955)N(4254934330)N(3900569407)N(7382340)N(3358)N(970)}//  - Warp -

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