Hi,
have you tried writing the image in the camera callback? Maybe have a
look at osgprerender and osgscreencapture.
jp
Dominic Stalder wrote:
Sorry for hesitating, but the time of our project is running ;-)
Someone any idea what I did wrong with the texture / image camera? Or is
there a problem with the addChild hirarchy?
Thanks a lot
Am 03.01.10 12:05, schrieb Dominic Stalder:
Hi Ulrich
thanks a lot, big mistake ;-)
Now the color is not black any more, but it only takes the gl clear
color of the the camera. Do I have to set some view matrices?
Dominic
Am 03.01.10 11:50, schrieb Ulrich Hertlein:
Hi Dominic,
a happy new year to you too.
On 2/01/10 10:00 PM, Dominic Stalder wrote:
Image* image = new Image;
image->allocateImage(osgViewer->width(), osgViewer->height(), 1,
GL_RGBA, GL_UNSIGNED_BYTE);
// creates a new camera that will render into the image and
sets the
rendering settings
ref_ptr<Camera> imgCamera = new Camera;
...
imgCamera->addChild(rootLighting.get());
root->addChild(imgCamera.get());
osgDB::writeImageFile(*image, "/Users/xyz/tmp/test.bmp");
It allocates the image with the right size (1400 x 736) and writes
it to
disk. But the image is all black.
Did you omit some code between 'root->addChild()' and
'writeImageFile'? There should be a
call to render the frame (like 'osgViewer->frame()') otherwise the
Image will remain black.
Does anybody see an error or what could be the problem? I also tried
with GL_INT instead of GL_UNSIGNED_BYTE but this didn't work too. Is
there a problem with the hirachy:
GL_U_B is fine, this will probably also give you better performance.
Cheers,
/ulrich
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