[haiku-development] Re: [haiku-commits] Re: radeon_hd driver help request

  • From: Alexander von Gluck IV <kallisti5@xxxxxxxxxxx>
  • To: <haiku-commits@xxxxxxxxxxxxx>
  • Date: Mon, 03 Dec 2012 05:38:33 -0600

On 2012-12-02 7:48 pm, looncraz wrote:
On 12/2/2012 4:22 PM, Gerald Zajac wrote:
On 12/02/2012 02:08 PM, looncraz wrote:
I'm going to allocate a
chunk at the end of the frame buffer, and reduce the reported available
graphics RAM.

That's what I did with the video drivers that I wrote (s3, ati, 3dfx). I used a chunk of memory at either the beginning or end of the video memory, and adjusted the frame buffer accordingly.

Regards,
Gerald





Good to know I'm not alone ;-)

I'm somehow drawing the cursor into the wrong memory, though... oh
well, I probably passed the wrong relative memory location... not
killing anything though ;-)

I don't think haiku-commits is the location for all this shenanigans :)

I wouldn't worry about messing up your video card... My Radeon HD 7970 survived
me doing all kinds of insane things to it while working on radeon_hd.

As for where to allocate the cursor memory... i'm not 100% sure about that off the top of my head. I could find out from AMD but it may take a few days.

As long as you don't fiddle with the power management (which would also effect
heat management)... things should be fine.

 -- Alex

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  • » [haiku-development] Re: [haiku-commits] Re: radeon_hd driver help request - Alexander von Gluck IV