-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 On 03/10/2011 02:46 PM, Marek Olšák wrote:
> The specification of GL_EXT_texture_snorm says: > > OpenGL 3.0 is required. > > This extension is written against the OpenGL 3.0 specification. And then all of the chapter headings in the spec say "Additions to Chapter # of the OpenGL 2.0 Specification". lol > which simply means we cannot advertise the extension on GL2.1. Would > anyone be against violating the requirement? > > The thing is even some of GL2 hardware can do it, and GL3 likely won't > be supported anytime soon due to unresolved patent issues. My recollection is that AMD (where all of the spec authors live) only wanted to advertise it with OpenGL 3.x, and they didn't want to specify the interactions. It looks like the only interactions are with GL_ARB_texture_rg. I think it's safe to advertise this on 2.x hardware as long as GL_ARB_texture_rg is also supported. This makes sense given that the most common usage is for normal maps. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org/ iEYEARECAAYFAk1/hFcACgkQX1gOwKyEAw+HzwCeLzt30HuvdcGrdxKazUkardHo 8LAAn3H8cSVuewCG3vCuqcVhHKLAvIxW =iVP5 -----END PGP SIGNATURE----- _______________________________________________ mesa-dev mailing list mesa-dev@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/mesa-dev
