Hi,
sizeof(unsigned char) != sizeof(GL_UNSIGNED_SHORT)
try GL_UNSIGNED_CHAR
jp
Vincent Bourdier wrote:
> Hi All,
>
> I have a problem concerning writing image data.
>
> My code is simple :
>
> const 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] = 0; //red
> data[i+1] = 0; //green
> data[i+2] = 0; //blue
> }
>
> osg::ref_ptr<osg::Image> image = new osg::Image;
> image->allocateImage(_x, _y, 1, GL_RGB, GL_UNSIGNED_SHORT);
> 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_SHORT,
> data, osg::Image::NO_DELETE);
>
> osgDB::writeImageFile(*image, "Z:/autres/Gradient.jpg");
>
>
>
> the result must be a black picture... but I've a totally different
> result (see attached file)
>
> Does anyone see a mistake ?
>
> Thanks.
>
> Regards,
> Vincent.
>
> ------------------------------------------------------------------------
>
>
> ------------------------------------------------------------------------
>
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