Distoted colours in HTML documents

2022-03-27 Thread Rod at Orpheusmail
For sometime now NetSurf has been exhibiting colour distortion. At least, I
don't know what else to call it. In pictures, contained in html files for
example, reds appear blue, as do peoples faces, Pale blue appears yellow
while dark blue appears brown. And so on...

I don't know what causes this problem or what to do to correct it. Can
anybody help please?

I'm using NetSurf v3.11 (Dev CI#5327), but I get the same effect when using
v3.10
The machine - a Titanium running RISC OS 5.28(19-Oct-20).

I would very much appreciate some help here please.

Kind regardss,
Rod Grover

-- 
Rod Grover
grov...@orpheusmail.co.uk
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Re: Distoted colours in HTML documents

2022-03-27 Thread Mouse
> For sometime now NetSurf has been exhibiting colour distortion.  At
> least, I don't know what else to call it.  In pictures, contained in
> html files for example, reds appear blue, as do peoples faces, Pale
> blue appears yellow while dark blue appears brown.  And so on...

What else has changed?  For example, did this start when you switched
to a new version of netsurf, or a new version of your OS, or new
graphics hardware, or any such?

I once saw something very similar with an X program on Linux: all
colours came out with the red and blue primaries switched.  In that
case it was a bug in the program - it was assuming that the primaries
were presented in a particular order, rather than paying attention to
the information X provides about how they are actually arranged.  (I
assume some developer mistook "my system does it this way" for "this is
how it always works".)

You say RISC OS.  I don't know what that uses for graphics interfacing,
but it is not a great stretch for me to imagine something similar
happening there: a new graphics device, a new version of some software
layer, something of the sort.  I could also imagine it being a bug in
netsurf itself, probably one like the one I sketched above, assuming
something is always a particular when when it actually isn't.

Without more information (most of which I'm not competent to evaluate,
since I don't know RISC OS and I don't really know much about NetSurf),
it's hard to do more than speculate.

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Re: Distoted colours in HTML documents

2022-03-27 Thread cj
In article <59cf38bc5agrov...@orpheusmail.co.uk>,
   Rod at Orpheusmail  wrote:
> For sometime now NetSurf has been exhibiting colour distortion. At
> least, I don't know what else to call it. In pictures, contained in
> html files for example, reds appear blue, as do peoples faces, Pale
> blue appears yellow while dark blue appears brown. And so on...

When did this start? Has it worked normally previously on the
Titanium? Remember - some of the later RISC OS hardware had the R and
B channels swapped and there is a new RISC OS 5 spriteword format. It
does sound like the RGB versus BGR problem.

As far as I am aware NetSurf copes with the colour swap.

-- 
Chris Johnson
Edinburgh
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Re: Distoted colours in HTML documents

2022-03-27 Thread Bryan Hogan
In message <59cf38bc5agrov...@orpheusmail.co.uk>
  Rod at Orpheusmail  wrote:

> For sometime now NetSurf has been exhibiting colour distortion. At least, I
> don't know what else to call it. In pictures, contained in html files for
> example, reds appear blue, as do peoples faces, Pale blue appears yellow
> while dark blue appears brown. And so on...

> I don't know what causes this problem or what to do to correct it. Can
> anybody help please?

At a guess, try opening NetSurf's Choices window from the iconbar menu, 
click on the Images icon, and check that both foreground and background 
image settings are "Use OS".

Bryan.

-- 
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