Are these fixes:

Change 1157 on 2001/09/24 by parkrrrr@parkerr-linux

 Fix inability to use PNG or TIFF images as heightfields

Change 1155 on 2001/09/24 by parkrrrr@parkerr-linux

 Fix error opening hf_gray_16 file: POV was forgetting the file type.

...a fix to this bug report?:

hf_gray_16 + png creates wrong output image
http://news.povray.org/3BA3BAE6.4671C0BB@free.fr

...I guess not as the error still occurs.

And is this fix:

Change 1183 on 2001/10/02 by parkrrrr@parkerr-linux

 Fix problem with ASCII PGM files.  It's still really shaky, though;
 it really needs to be either rewritten or fixed to use libppm.

...a fix to this bug report:

16-bit PGM pigment and height field problems
http://news.povray.org/3ba99adb@news.povray.org

...I don't know anything about PGM, so I can't test this myself.

There may also be other fixes/bugs where I won't recognize the connection.

Rune
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On Mon, 8 Oct 2001 20:38:09 +0200, Rune wrote:
>Are these fixes:
>
>Change 1157 on 2001/09/24 by parkrrrr@parkerr-linux
>
> Fix inability to use PNG or TIFF images as heightfields
>
>Change 1155 on 2001/09/24 by parkrrrr@parkerr-linux
>
> Fix error opening hf_gray_16 file: POV was forgetting the file type.
>
>...a fix to this bug report?:
>
>hf_gray_16 + png creates wrong output image
>http://news.povray.org/3BA3BAE6.4671C0BB@free.fr

No.  1157 is a fix to the problem where PNG images were an unrecognized
file type, and 1155 is a related fix that makes it possible to create
hf_gray_16 files again.  I can find the bug reports that they refer to,
if it's really important.  However, I suspect that they were fixed before
you started keeping your list so you won't need to remove anything for
them.

>And is this fix:
>
>Change 1183 on 2001/10/02 by parkrrrr@parkerr-linux
>
> Fix problem with ASCII PGM files.  It's still really shaky, though;
> it really needs to be either rewritten or fixed to use libppm.
>
>...a fix to this bug report:
>
>16-bit PGM pigment and height field problems
>http://news.povray.org/3ba99adb@news.povray.org

It is a partial fix, as it says.  It still doesn't properly handle comments
in the PGM file, and it's a little unstable about the parsing, but it should
handle automatically generated PGM files in most cases. 

-- 
#macro R(L P)sphere{L F}cylinder{L P F}#end#macro P(V)merge{R(z+a z)R(-z a-z)R(a
-z-z-z a+z)torus{1F clipped_by{plane{a 0}}}translate V}#end#macro Z(a F T)merge{
P(z+a)P(z-a)R(-z-z-x a)pigment{rgbt 1}hollow interior{media{emission T}}finish{
reflection.1}}#end Z(-x-x.2y)Z(-x-x.4x)camera{location z*-10rotate x*90}

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