[osg-users] Texture projection on terrain and gl_TextureMatrix[0...7]

[Trajce Nikolov NICK]

Hi Ekaterina,

post your code ... We can fix it when time permits ;-)

On Thu, Dec 22, 2016 at 4:27 PM, Christian Buchner <
christian.buchner at gmail.com> wrote:

> Just some wild guesses:
>
> You might have to enable blending in the state set, and set an appropriate
> blend function as (depending on whether your projective texturing is done
> in a 2nd render pass or not)
>
> On hardware that does not support opengl border colors
> (ARB_texture_border_clamp) in hardware, you might have to explicitly set
> the texture's border pixels to a transparent color, turning a 512x512 image
> into effectively a 510x510 one.
>
> Christian
>
>
> 2016-12-22 16:03 GMT+01:00 Ekaterina Fokina <ekaterina.fokina at tum.de>:
>
>> Thank you your answers!
>>
>> Attached there is a printscreen what I get.
>> For the terrain I am using lz.osgt and the image for the texture file is
>> osg128.png.
>>
>> I set the border to transparent, but unfortunatelly it didn´t help...
>>
>> Guys, could you please give me a hint how is it possible to relocate the
>> projected image on the terrain to a specific location on that terrain?
>> I am still confused how to set the texture coordinats uning shaders.
>>
>> Thank you!
>>
>> Cheers,
>> Ekaterina
>>
>> ------------------
>> Read this topic online here:
>> http://forum.openscenegraph.org/viewtopic.php?p=69738#69738
>>
>>
>>
>>
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>>
>
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-- 
trajce nikolov nick
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