make sure zFar is at least 64 units to avoid feeding a bogus value to glFrustum

git-svn-id: svn://svn.icculus.org/twilight/trunk/darkplaces@2326 d7cf8633-e32d-0410-b094-e92efae38249

diff --git a/gl_backend.c b/gl_backend.c
index dec7eebe82a5d0d35d32800df7712301d6747f4a..05ebc12bbcdca189ea05cdd3986ea86de3ead593 100644 (file)
--- a/gl_backend.c
+++ b/gl_backend.c
@@ -308,6 +308,8 @@ static void GL_SetupFrame (void)
        // depth range
        zNear = 1.0;
        zFar = r_mesh_farclip;
+       if (zFar < 64)
+               zFar = 64;
 
        // fov angles
        fovx = r_refdef.fov_x;