Ok, this is the code, without all the pixel color computation :
long size = _x*_y*3;
unsigned char* data = (unsigned char*)calloc(size, sizeof(unsigned
char));
for(long i=0; i < size ; i+= 3)
{
[...]
data[i] = color; //red
data[i+1] = color; //green
data[i+2] = color; //blue
}
osg::Image* image = new osg::Image;
image->allocateImage(_x, _y, 1, GL_RGB, GL_UNSIGNED_BYTE);
image->setOrigin(osg::Image::BOTTOM_LEFT);//start counting pixels on the
Bottom left of the picture
image->setImage(_x, _y, 1, GL_RGB, GL_RGB, GL_UNSIGNED_BYTE, data,
osg::Image::USE_NEW_DELETE);
osgDB::writeImageFile(*image, "Z:/autres/Gradient.jpg");
Thanks for help.
Vincent.
2008/4/11, Stephan Huber <[EMAIL PROTECTED]>:
>
> Vincent Bourdier schrieb:
>
> > If x*y*3 is not the good solution, how can I compute the right size for
> a
> > RGB image ?
>
>
> please show us the complete code. The chance is high that you write out
> of the bounds of your created picture. Creating osg::Images from scratch
> is possible, I do this a lot in my own code.
>
> cheers,
>
> Stephan
>
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