I've rendered a scene using the following slope map for the terrain:

pigment
{
 slope {-y}
 color_map
 {
  [0 color rgb <046/255,104/255,058/255,>]
  [0.0625 color rgb <139/255,117/255,102/255,>]
  [0.0625 color Gray]
  [0.125 color Gray]
 }
}

Problem areas exist around the road, where the terrain is particularly
steep. They are nearly vertical and should be completely gray. Why isn't
the slope map being applied properly to these areas? Is this a bug?

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Attachments:
Download 'outdoorscene.jpg' (36 KB)

Preview of image 'outdoorscene.jpg'

There's nothing really wrong with your texture,
the heightfield is probably jagged, you could
blur the heightfield image in a paint program
around the road to make it slope up smoothly
instead of stair-stepping.

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"Tim Attwood" <tim### [at] comcastnet> wrote:
> There's nothing really wrong with your texture,
> the heightfield is probably jagged, you could
> blur the heightfield image in a paint program
> around the road to make it slope up smoothly
> instead of stair-stepping.

I've already blurred the heightfield. My problem is not with the jaggedness
of the HF, rather it is with the fact that the sloped bits aren't colored
properly.

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"SharkD" <nomail@nomail> wrote:
> "Tim Attwood" <tim### [at] comcastnet> wrote:
> > There's nothing really wrong with your texture,
> > the heightfield is probably jagged, you could
> > blur the heightfield image in a paint program
> > around the road to make it slope up smoothly
> > instead of stair-stepping.
>
> I've already blurred the heightfield. My problem is not with the jaggedness
> of the HF, rather it is with the fact that the sloped bits aren't colored
> properly.

What is your adc_bailout in global_settings?  Try lowering that as I've had
that affect slope patterns.

-tgq

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"Trevor G Quayle" <Tin### [at] hotmailcom> wrote:
> What is your adc_bailout in global_settings?  Try lowering that as I've had
> that affect slope patterns.
>
> -tgq

My adc_bailout and max_trace_level are at their default values.

I turned off smoothing of the heightfield and the slope map behaved
properly. So, this bug (if it is a bug) only affects smoothed heightfields.

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