Hi Terry, I have tried to render to portions of a FBO before but always failed, only using the same size viewport as the textures has only ever work for me. When I experimented with this (over six months ago) I came to the conclusion that it was most like a driver restriction.
Robert. On 7/24/06, Terry Welsh <[EMAIL PROTECTED]> wrote:
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 _______________________________________________ osg-users mailing list [email protected] http://openscenegraph.net/mailman/listinfo/osg-users http://www.openscenegraph.org/
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