Forge for Minecraft initialize the display with stencil buffer:
in minecraft.java (version 1.6.4) you can find these line of code:
try
{
ForgeHooksClient.createDisplay();
}
that calls this method:
static int stencilBits = 0;
public static void createDisplay() throws LWJGLException
{
ImageIO.setUseCache(false); //Disable on-disc stream cache should speed up texture pack reloading.
PixelFormat format = new PixelFormat().withDepthBits(24);
try
{
//TODO: Figure out how to determine the max bits.
Display.create(format.withStencilBits(8));
stencilBits = 8;
}
catch(LWJGLException e)
{
Display.create(format);
stencilBits = 0;
}
}
So i think this is enough.