Thank you.

On Tuesday, May 10, 2022 at 7:53:09 PM UTC-5 [email protected] wrote:

> DC,
> Check out the ProjectionMatrix functions in osgEarth, they might be of 
> some help.
> https://github.com/gwaldron/osgearth/blob/master/src/osgEarth/Math.cpp#L518
>
> On Monday, May 9, 2022 at 6:43:26 PM UTC-4 [email protected] wrote:
>
>> Hello,
>>
>> Has anyone here been successful in creating a reverse z buffer for OSG? 
>>
>> I have done the following:
>>
>>    - Created osg::Depth global state attribute to be GREATER and 1.0 to 
>>    0.0.
>>    - Created osg::ClipControl  global state attribute to be LOWER_LEFT,  
>>    ZER0_TO_ONE
>>    - Set camera's clear depth to be 0.
>>
>> I can render a scene and view the depth buffer and it's "reversed". That 
>> is, close objects are white and distance objects are black. But I'm also 
>> supposed to modify the projection matrix, which is where I'm stuck. The 
>> result is either nothing rendering or some very circus mirror looking 
>> objects.
>>
>> Thanks,
>> DC
>>
>>
>>

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