[osg-users] render quad texture to arbitrary quadrilateral

OpenSceneGraph Users osg-users at lists.openscenegraph.org
Wed Oct 28 04:57:23 PDT 2020

Hello Tom!

Looks like there was an issue in uploading the screenshot? 

Could you post a minimal/complete/reproducible example of the code that you 
use? Maybe someone will be able to spot the issue just by looking at the 

-- Vaillancourt

On Tuesday, 27 October 2020 18:58:06 UTC-4, Tom Pollok wrote:
> Hello,
> im trying to render a texture to an quadrilateral. The  quadrilateral is 
> the calculated by the intersection view frustum with aplane. So the image 
> basically a perspective projection of the original image. 
> Unfortunately the texture coordinates are not interpolated correctly such 
> that the triangles look wrong.
> I know that is is a very basic computer graphics problem. But i have some 
> trouble solving it. 
> Does anyone have solved this problem already for arbitrary quadrilaterals? 
> My guess would be using fragment shaders, but im not experienced in with 
> GLSL. Another option is transforming the texture using a homography and 
> then rendering a quad, but it feels like this the brute force solution.
> Id be very thankful if somebody could help me. Ideally of somebody knows 
> where this problem has been solved already with openscenegraph.

You received this message because you are subscribed to the Google Groups "OpenSceneGraph Users" group.
To unsubscribe from this group and stop receiving emails from it, send an email to osg-users+unsubscribe at googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/osg-users/7f2f6ce0-b2ef-481a-8ecd-213332c18608o%40googlegroups.com.
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.openscenegraph.org/pipermail/osg-users-openscenegraph.org/attachments/20201028/113f664a/attachment.html>

More information about the osg-users mailing list