[Open-graphics] The state of Linux Graphics...
pj at funrestraints.com
Tue Aug 22 17:56:16 EDT 2006
On Tue, 22 Aug 2006 12:32:27 -0400, Grzegorz Adam Hankiewicz
<gradha at titanium.sabren.com> wrote:
> On 2006-08-22, Richard Cooper <pj at funrestraints.com> wrote:
>> Linux can have good graphics, it's just that everyone, like
>> yourself, has a lot of ignorant reasons why they believe it
>> isn't possible.
> Where did I say it was impossible? Can you stop putting words in my
> mouth? I precisely had a tweaked fb to allow smooth graphics. How
> would I say it is not possible having it in front of me?
Hmm, I don't know, maybe when you said this:
> For instance, do you know why it is impossible to make flicker free
> page flipping applications with the kernel's framebuffer at least
> in 2.2/2.4 (and I believe this won't ever be solved in 2.6 or later)?
Yes, there it is, "impossible."
You even went on to explain what horrible things would happen if anyone
attempted to make it possible:
> Cool, but most available video hardware doesn't provide an interrupts
> when vsync is going to happen, because they are commodity hardware
> not oriented towards games. So you are left with active polling
> as the lowest common denomiator. Nice. Now any user application
> calling that ioctl is going to be able to perform a CPU DOS attack
> at kernel level on the machine.
I have shown that it is possible without causing such horrible things to
happen, I even supplied example code. So exactly where was I wrong to say
that everyone, like yourself, has a lot of ignorant reasons why they
believe that it isn't possible? Isn't that what just happened, with
undeniable evidence no less? It is ignorant statements such as yours that
I encounter all of the time when I talk about this.
It seems all I can ever do is tell everyone to fuck off and find my own
solution. So fuck it, I'll find my own solution.
I'm unsubscribing from the list, so if anyone feels the need to talk to
me, email me directly.
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