RE: [XaraXtreme-dev] Debugging View::RenderOptimalView - request for assistance

["Phil Martin" <Phil@xxxxxxxx>]

Note that LX's CWxBitmap class stores 24BPP (32BPP?) bitmap data in
different orders depending whether it's running on Linux or Windows (and
the poor old Mac, with it's own byte ordering problems, is an unknown
factor in this area).

That means that when we load bitmaps from XAR files, for instance,
there's conditional code to flip the byte order around. Similar code
exists in several places (and possibly in CDraw itself!).

I have to say I'm not really happy about this (and I fear there might be
paths that swap the byte to and fro a number of times). I'd prefer the
code to be transparent to this but I haven't been able to work out why
this byte order reversal happens or whether it's practical to change it.

Phil 

> -----Original Message-----
> From: owner-dev@xxxxxxxxxxxxxxxx 
> [mailto:owner-dev@xxxxxxxxxxxxxxxx] On Behalf Of Gerry Iles
> Sent: 16 June 2006 15:53
> To: dev@xxxxxxxxxxxxxx
> Subject: RE: [XaraXtreme-dev] Debugging 
> View::RenderOptimalView - request for assistance
> 
> I've just tested this after adding the ScopedFlagSetter line 
> below and it now seems to export EPS properly.  Well, like 
> you said, the RGB order seems to be wrong and my document is 
> displaying rotated 90 degrees in KGhostview, but the 
> simple/complex handling seems to be working fine.
> 
> I've checked in the tweak...
> 
> Gerry
> 
> -----Original Message-----
> From: owner-dev@xxxxxxxxxxxxxxxx 
> [mailto:owner-dev@xxxxxxxxxxxxxxxx] On Behalf Of Gerry Iles
> Sent: 16 June 2006 15:43
> To: dev@xxxxxxxxxxxxxx
> Subject: RE: [XaraXtreme-dev] Debugging 
> View::RenderOptimalView - request for assistance
> 
> > Turning off caching at the global level (from the Debug menu) would 
> > simplify your testing.
> 
> As well as instantly confirming whether this is, in fact, the 
> problem...
> 
> > There are places where the caching is disabled within the 
> scope of a 
> > function using a "ScopedFlagSetter".
> 
> It appears that there should be this line at the top of 
> Filter::ExportRender
> 
> ScopedFlagSetter
> fsBitmapCacheing(NodeRenderableBounded::bEnableCacheing, FALSE);
> 
> That is in the current Xtreme code but not in XaraLX...
> 
> Gerry
>