Alex,
I have already found and fixed this bug. Just as previous mail
mentions, when in the following condition(PictOpOver):
1)pSrc : PICT_a8r8g8b8 pMsk:0 pDst: PICT_r5g6b5
The coordinate of X is out of the source picture that leads to the
wrong rendering in the region we don't want.
Thanks,
Frank
-----Original Message-----
From: [email protected]
[mailto:[email protected]] On Behalf
Of Alex Deucher
Sent: 2010?6?12? 23:34
To: Huang, FrankR
Cc: [email protected]; [email protected];
[email protected]
Subject: Re: [Xorg-driver-geode] (no subject)
On Sat, Jun 12, 2010 at 5:43 AM, Huang, FrankR <[email protected]> wrote:
> Morton,
>
> After I fix the PictOpOver operation, the geode still has
> another rendering issue. That is also serious. I attached a picture,
> please take a look. I have not find the root cause.
> I use this simple gtk program to reproduce. When I move the
> mouse on the button, some green add-on region is appearing. You can see
> the green part on scissor button.
> I trace the code and found that when I move the mouse on the
> button, the driver will do two rendering operation(lx_do_composite). The
> format of these two operations are:
>
> 1)pSrc : PICT_a8r8g8b8 pMsk: 0 pDst: PICT_r5g6b5
> 2)pSrc : PICT_a8r8g8b8 pMsk: PICT_a8 pDst:
> PICT_r5g6b5
>
> When I note the 1) condition handle in geode driver code,
> everything is ok. No add-on region is appeared again. But I am sure our
> driver can handle the 1) condition correctly, I use rendercheck to test
> that case.
> At the same time, when I move the mouse on the button, other
> rendering is done by Xserver because our driver can not handle all the
> rendering condition. That is due to our limited rendering function. I am
> not sure if it is caused by this mixed rendering result( our driver and
> pixman rendering together).
>
Make sure you are properly flushing the caches in your drawing engine?
Alex
>
> Thanks,
> Frank
>
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