On 11/28/2009 05:25 AM, Tatsuhiro Nishioka wrote:
> Hi Tim,
> 
> As I said to you in IRC, I have a weird transparency problem with the shaders 
> enabled.
> Here's the snapshot (helicopter view) with shaders.
> http://macflightgear.sourceforge.net/wp-content/uploads/snapshots/3dclouds-effect-enabled.png
> 
> I used both FG/SG @ cvs-head as of yesterday and FG/SG @ Tim's git, but I got 
> exactly the same result.
> The cause of this fancy rainbow-ish filter is the alpha calculation in both 
> default.vert and model-default.vert.
> 
> A "lazy" patch to avoid this issue is available at:
> http://macflightgear.sourceforge.net/wp-content/uploads/patches/shaders-weird-alpha-fix.diff
> 
> I don't know if the real problem is in a shader side or C++ side.
> Tim, do you have any hint on this?
> 
Pretty bizzare. Obviously turning off alpha altogether isn't a real option. Is 
this a new problem since
the 3d clouds went in, or are/were you seeing it without 3d clouds at all? What 
version of
OSG are you using?

Tim

> Best,
> 
> Tat
> 
> On Nov 27, 2009, at 2:41 AM, Tim Moore wrote:
> 
>> I've checked in code that changes 3D clouds to use effects. you should update
>> simgear and Effects and Shaders in the data directory.
>>
>> There is a one frame blip of weirdness that I know about; a fix is in the 
>> works.
>>
>> Tim
> 
> 
> 
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