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Thank you very much.
Here is the OpenGL texture class which uses FLTK:
On Saturday, October 10, 2020 at 3:46:48 PM UTC+5:30 Manolo wrote:
You can get an Fl_RGB_Image object from a .png file with: and similarly with .jpeg: and .bmp:
In all these cases, the resulting Fl_RGB_Image object, supposing you call it img, will tell you
if its RGB (img->d() == 3) or RGBA (img->d() == 4)and its width (img->w()) and height (img->h()).
In some cases, the row length is bigger than img->w()*img->d(). In that case img->ld() is != 0 and gives that length. Finally, you get the address of the first byte of the RGB or RGBA data by img->array of type const unsigned char *. That should put you in the position to build a texture.
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