[osg-users] CameraNode viewport problems

[Terry Welsh]

I can't seem to get a properly rendered texture from a CameraNode if I change the viewport to be something other than the full size of the texture attached to it.  For example, in osgshadowtexture/CreateShadowedScene.cpp if line 128 is changed from

camera->setViewport(0,0,tex_width,tex_height);

to

camera->setViewport(0,tex_height/2,tex_width,tex_height/2);

then no image is rendered at all.  If the render target implementation is set to FRAME_BUFFER then an image is rendered, but it seems to ignore the viewport setting and renders to the full texture size.

Sorry I don't have a fix yet.  Was hoping somebody who knows the code better might know what is causing the trouble.  Otherwise, I can probably look at this in more detail in a couple weeks....
--
Terry Welsh - mogumbo 'at' gmail.com
www.reallyslick.com  |   www.mogumbo.com

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