On 15/01/2012 9:20 PM, clipka wrote:
>
> The root cause has been identified by now; it only shows when a ray
> happens to hit the image map extremely close to the image border (about
> a trillionth (1e-12) of a pixel off in this case), and is due to
> precision issues apparently not considered by the original code author.

After installing RC6 I am still getting the same error.
Below is a link to the scene rendered with one thread. You can see that 
the render fails before the block reaches the image border. For 
comparison I have included a link to the scene rendered with eight threads.

1 thread
http://imgur.com/8BG0X

8 threads
http://imgur.com/HTldu

Code:

#version 3.7;

global_settings {
  adc_bailout       0.0039
  ambient_light     rgb <1.000,1.000,1.000>
  assumed_gamma     1.00
  irid_wavelength   rgb <0.250,0.180,0.140>
  max_trace_level   5
  number_of_waves   10
  noise_generator   3
  charset           ascii
}

background { colour rgb <0.000,0.000,0.000> }



#declare Ring_Texture1 =
texture {
  uv_mapping
  pigment {
   image_map{
    png "sat_ring_color.png"
    interpolate 2
    map_type 0
   }
   rotate    <90.000,90.000,0.000>
  }

  finish {
   ambient     rgb <0.100,0.100,0.100> *5
   brilliance  1.000
   crand       0.000
   diffuse     0.600
   metallic    0.000
   phong       0.000
   phong_size  40.000
   specular    0.000
   roughness   0.050
  }

}

#declare Camera0 =
camera {
  perspective
  location <3843.816,38.892,-2660.667>
  up y
  right 1.333*x
  angle 33.000
  sky <-0.004,1.000,0.002>
  look_at < 0.449, 18.943, 0.102 >
}  // end Camera0

disc {  // Disc0
  0,y,4.400000,2.500000
  texture{ Ring_Texture1 }
     scale     <750.000000,750.000000,750.000000>

  rotate    <0.000000,0.000000,-20.000000>
  translate <-3500.000000,900.000000,900.000000>
}  // end Disc0


camera{ Camera0 }


-- 
Regards
     Stephen

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