[Bug 3290] Dungeon Siege 2 demo crashes on startup

[Wine Bugs]

http://bugs.winehq.org/show_bug.cgi?id=3290

------- Additional Comments From [e-mail]  2005-10-10 10:58 -------
Created an attachment (id=1142)
 --> (http://bugs.winehq.org/attachment.cgi?id=1142&action=view)
Check for ARB_vertex_program before trying to use shader functions.

This patch add checks for ARB_vertex_program before allowing vertex shaders to
use ARB_vertex_program.