[Flightgear-devel] Ati viewport bug
http://code.google.com/p/flightgear-bugs/issues/detail?id=385 Is about a problem with the viewport behaving very oddly, in certain Ati catalyst drivers. A kind person has worked out a hack, which fixes the issue, or at least avoids it. It add an empty, pre-render camera to the scene, which I assume forces some state which otherwise gets skipped in the Ati drivers. If anyone has any strong opinions about applying the hack to the 2.10 release branch, let me know. I'm currently undecided - it *is* a hack, but it fixes a real and long-standing bug, and the cost to everyone else should be zero. Regards, James -- Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS, MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft MVPs and experts. ON SALE this month only -- learn more at: http://p.sf.net/sfu/learnnow-d2d ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
Re: [Flightgear-devel] Ati viewport bug
Any chance to wrap this into something like
if( true == getprop(/sim/use-ati-hack) ) {
addTheEmptyPrerenderCamera();
} else {
doNothing();
}
Am 28.01.2013 18:56, schrieb James Turner:
http://code.google.com/p/flightgear-bugs/issues/detail?id=385
Is about a problem with the viewport behaving very oddly, in certain Ati
catalyst drivers.
A kind person has worked out a hack, which fixes the issue, or at least
avoids it. It add an empty, pre-render camera to the scene, which I assume
forces some state which otherwise gets skipped in the Ati drivers.
If anyone has any strong opinions about applying the hack to the 2.10 release
branch, let me know. I'm currently undecided - it *is* a hack, but it fixes a
real and long-standing bug, and the cost to everyone else should be zero.
Regards,
James
--
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Re: [Flightgear-devel] Ati viewport bug
On 28 Jan 2013, at 19:09, Torsten Dreyer tors...@t3r.de wrote:
Any chance to wrap this into something like
if( true == getprop(/sim/use-ati-hack) ) {
addTheEmptyPrerenderCamera();
} else {
doNothing();
}
Yes of course, that's probably wise.
James
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Re: [Flightgear-devel] Ati viewport bug
On 28 Jan 2013, at 19:09, Torsten Dreyer wrote:
Any chance to wrap this into something like
if( true == getprop(/sim/use-ati-hack) ) {
addTheEmptyPrerenderCamera();
} else {
doNothing();
}
On Mon, Jan 28, 2013 at 4:42 PM, James Turner wrote:
Yes of course, that's probably wise.
This does mean that the default behavior is still broke for the people we
are trying to help with this, but it at least offers a fix for anyone who's
willing to ask (or hunt through the email archives.)
Curt.
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Re: [Flightgear-devel] Ati viewport bug
On 28 Jan 2013, at 22:52, Curtis Olson curtol...@flightgear.org wrote: On Mon, Jan 28, 2013 at 4:42 PM, James Turner wrote: Yes of course, that's probably wise. This does mean that the default behavior is still broke for the people we are trying to help with this, but it at least offers a fix for anyone who's willing to ask (or hunt through the email archives.) Curt. Right - my impression is the hack is zero-impact for non-affected people, so making it on by default is a possibility, but I really don't have a handle on how widespread the bug is - the forums and IRC aren't full of people screaming about it, but equally it has been mentioned several times. I'm going to add the code, bracketed by a property test, and default it to off on the release branch, and to 'on' in 'next', **temporarily**. If anyone running next sees any issues due to the code, they can report them and we will get some data-points about if it's truly zero-impact for 'everyone else' without jeopardising the stability of the release code. And flipping the default property value on the release branch (even for a 2.10.1) will still be an option. James -- Master Visual Studio, SharePoint, SQL, ASP.NET, C# 2012, HTML5, CSS, MVC, Windows 8 Apps, JavaScript and much more. Keep your skills current with LearnDevNow - 3,200 step-by-step video tutorials by Microsoft MVPs and experts. ON SALE this month only -- learn more at: http://p.sf.net/sfu/learnnow-d2d ___ Flightgear-devel mailing list Flightgear-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/flightgear-devel
