Hi,
i would like to use the color matrix to adjust brightness and contrast. I read in a book how to do this, but it seems not to work:
glMatrixMode (GL_COLOR);
glTranslatef (0.5,0.5,0.5);
(I call those functions after glClear, but before everything is drawn.)
This should darken everything i think, but it just happens nothing.
I checked for error codes, but there are none. I checked the required extension (ARB_imaging), but it´s there (Geforce 2).
So, where could be the error?
Hope someone knows how to do it properly.
Jan.