Brian Paul <[EMAIL PROTECTED]> wrote:
> I considered this project myself when I got my Palm Pilot. However,
> as I understand it, the system is limited to 32KB code and data
> segments. Mesa's code is much larger and often allocates buffers
> larger than 32KB.
Not to mention that huge amounts of stack space that Mesa gobbles up.
I spent three days this week tracking down problems that showed up in
the latest Mesa sources when running under DOS and QNX with texture
mapping. It turns out that these environments do not support growable
stacks, and hence we need to pre-allocate in advance the amount of
stack space that we need at link time. I was using a 50K stack. Turns
out that in mesa there are a number of places where a 19K temporary
variable is used on the stack for rendering purposes. Adding up all
the stack space equalled a minimum stack of 60K before the program
would start running.
I am now using a 200K stack to be safe, but Mesa certainly does chew
through the memory!
Regards,
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