This won't actually do anything until the a debug bit is added when
creating the context, but that requires support for GLX_create_context
which SDL doesn't support. I'll add support for WGL_create_context to
winlayer in a bit as a stopgap.
Also updates our local copy of glext.h with a fresh one from the
Khronos registry.
git-svn-id: https://svn.eduke32.com/eduke32@2056 1a8010ca-5511-0410-912e-c29ae57300e0
* New shade/visibility calculation code, which is activated with 'r_usenewshading' (on by default), and is closer to the classic look. Also tweak the FOGSCALE macro to have approximately the same fog distance with all renderers.
* Mapster32: END modifier to RShift. If it's pressed when RShift is released, sprites which are in grayed out sectors are also selected; Make changing shade affect all highlighted sprites in 3D mode (when aiming at one of them).
* some debug code to watch out for suspicious glGenTexture/glDeleteTextures calls, not active.
git-svn-id: https://svn.eduke32.com/eduke32@1943 1a8010ca-5511-0410-912e-c29ae57300e0
