[sldev] Cache politics: performance vs obfuscation
Argent Stonecutter
secret.argent at gmail.com
Tue Jun 10 20:22:07 PDT 2008
On 2008-06-10, at 13:57, Laurent Laborde wrote:
> If LL develop a custom image format, it will cost a lot of ressource
> to work on optimization, etc ...
The 'custom image format' under discussion is just "dump the decoded
texture in whatever format it exists in memory, along with associated
metadata, with a constant-cost obfuscation layer such as XORing the
content with some constant secret."
There is no optimization necessary, because there's no codec, and
miminal overhead: it's a straight copy and a tight "XOR" loop. Even
simple RLL encoding is more overhead.
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