[Bug 63565] Re: kscreensaver shows garbage in dual screen mode in the area which is not 3d (opengl) capable.
moreno.bartalucci at tecnorama.it
Thu Jul 10 13:57:26 UTC 2008
As I wrote in the decription of the bug, it is NOT a problem of "one head yes, one head no", the problem is on the total horizontal resolution.
In my configuration, in fact, it is 2880 pixels (1600 on the first head + 1280 on the second head).
The 3d hardware acceleration on this card, however, supports only until a certain number of pixels which is below my number of pixels (i don't remember in this moment how much it is).
The result in my case is that the first head and part of the second one can be drawn using the 3d hardware acceleration, the remaining part of the second head cannot.
This is not a bug: it is how this video card is designed for.
The bug is: in case of this card, any attempt to draw anything beyond the available 3d hardware specification of the card results in almost-random garbage drawn on that part of the second screen.
This is not beautiful, nor useful being a screen saver used to avoid a permanent pattern drawn on the same area of the screen.
I don't know if the "responsible" for this is to be considered the radeon driver or the application drawing the data.
In any case, if there is a better place where i can post this bug I'm ready to do it.
kscreensaver shows garbage in dual screen mode in the area which is not 3d (opengl) capable.
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