Blender 2.37, spec and srpms

[luya at jpopmail.com]

How about updating the source to Blender 2.37 to see if the new version is working? 
 Source is available on http://download.blender.org/source/blender-2.37.tar.gz.
It worked for i386 but I cannot help on x86_64 case because
 I don't have AMD64 based system.


----- Original Message -----
From: "Toshio Kuratomi" <toshio at tiki-lounge.com>
To: "Discussion related to Fedora Extras" <fedora-extras-list at redhat.com>
Subject: Re: Blender 2.37, spec and srpms
Date: Sun, 05 Jun 2005 10:39:07 -0400

> 
> If you're seriously interested in blender, there are several open bugs
> in bugzilla.redhat.com that you might want to check.
> 
> This one has logs for x86_64 failure against 2.36:
>    https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=156498
> 
> I've just added a patch that allows blender to compile with one area
> that I'm uncertain of. There are two places in the code where blender
> hashes pointers to make a key for a map.  Here's one from
> blender/source/gameengine/Expressions/KX_HashedPtr.cpp:
> 
>    unsigned int KX_Hash(unsigned int inDWord)
>    {
>      unsigned int key = inDWord;
>      key += ~(key << 16);
>      key ^=  (key >>  5);
>      key +=  (key <<  3);
>      key ^=  (key >> 13);
>      key += ~(key <<  9);
>      key ^=  (key >> 17);
>      return key;
>    };
>    unsigned int CHashedPtr::hash() const
>    {
>      return KX_Hash((unsigned int) m_valptr);
>    }
> 
> The cast in CHashedPtr::hash() needs to be changed to (unsigned long) in
> order to compile on x86_64.  The question is what to do with that value
> when it enters KX_Hash().  Should the algorithm always return a 32bit
> value or should it return a 64 bit value on 64 bit platforms?
> 
> It looks like the hash is only used to transform a pointer into a good
> key for a map class.  So the hash function's purpose is to produce an
> even distribution of keys from the pointers it's fed.
> 
> I've implemented the following fix:
> 
>    -       return KX_Hash((unsigned int) m_valptr);
>    +       return KX_Hash((unsigned int)((unsigned long) m_valptr &
> 0x00000000FFFFFFFF));
> 
> Does anyone see a problem with this?
> 
> -Toshio
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