[Mesa-dev] [PATCH 88/88] i965: handle 32bit and 64bit version of shader cache objects

[Timothy Arceri]

On Sun, 2016-09-25 at 19:51 -0700, Kenneth Graunke wrote:
> On Saturday, September 24, 2016 3:26:09 PM PDT Timothy Arceri wrote:
> > 
> > Pointers will have different lengths so we simple create a
> > different
> > sha1 for each platform.
> 
> I don't understand...you're putting pointers in the blob?  How can
> that
> work?  You obviously can't reload things from the cache as actual
> pointers, so you've got to be doing some kind of remapping from a
> "pointer" in the blob to a real pointer.
> 
> At that point, can't you just make the blob always use a uint64_t for
> pointers, and just pad with zeroes on 32-bit systems?  Then we could
> use the same copy for both...

We probably could but we are currently using intptr_t for
storing/restoring pointers and ptrdiff_t during remapping as we
probably should be. Thoughts?