Thanks for that Morbo, I'll stop derailing colik's thread now and let you get back to crushing puny humans ;)

If the card doesn't support textures large enough for the image you want to display, you have to break it into several textures and then make several triangles (or quads) and set the uv coordinates just right to display the image correctly.

Another solution is to have the code resize the textures for you, before generating the the OpenGL texture.

Load the image and the get its dimensions (lWidthPixels, lHeightPixels). Then, get the max texture dimensions supported by OpenGL. Then, calculate:

    // Resize Image To Closest Power Of Two    if (lWidthPixels <= glMaxTexDim) // Is Image Width Less Than Or Equal To Cards Limit        lWidthPixels = 1 << (int)floor((log((double)lWidthPixels)/log(2.0f)) + 0.5f);     else  // Otherwise  Set Width To "Max Power Of Two" That The Card Can Handle        lWidthPixels = 1 << (int)floor((log((double)glMaxTexDim)/log(2.0f)) + 0.5f);     if (lHeightPixels <= glMaxTexDim) // Is Image Height Greater Than Cards Limit        lHeightPixels = 1 << (int)floor((log((double)lHeightPixels)/log(2.0f)) + 0.5f);    else  // Otherwise  Set Height To "Max Power Of Two" That The Card Can Handle        lHeightPixels = 1 << (int)floor((log((double)glMaxTexDim)/log(2.0f)) + 0.5f);

Then you create a temporary bitmap of that size, blit your loading image onto it, and convert that bitmap to the OpenGL texture. A few hoops to jump through, but it works without any OpenGL extensions.

Nehe's IPicture basecode does exactly this. Download http://nehe.gamedev.net/counter.asp?file=files/misc/nehe_ipicture.zip and see the function BuildTexture in the file NeHe_IPicture.cpp

Note Nehe's code uses Windows-only stuff, so if you're using something else, you'll have to rewrite some of it.

Brian