I have a problem with color shading. I work with OGL in 32Bit mode. When I display sprites with an alpha channel (4 color bits for each pixel), everthing works fine (even though I do not use it when drawing it). But as soon as I display sprites without an alpha channel (3 color bits for each pixel), the image is displayed in kind of 16 bit mode and i get some color problems (shadings etc).
The Pixelformat is configured with 32 Bit alpha and z-buffer as well as PFD_TYPE_RGA.
I found out that this problem does not occur on all systems, only on one.
Does somebody have an idea what is going wrong or how to fix it?