there is a few things im confused about.
ive got a spotlight shining down onto a mesh made of out triangles.
first im specifying the normal for each poly i render, however when i dont specify normals, its as if they have had no effect.
what do you have to do to see the effect of specifying normals? im not too clear on this.
second you have to pretty close to the mesh in order to see any lighting effects at all. the light source is only a few units above mesh, but should i still be able to see the light on the mesh from higher up?
third im confused about setting the direction of a spotlight. the default is
{ 0.0, 0.0 -1.0 }
i wanted my light to shine down the negative y axis so it is perpendicular with my mesh, so i set
{ 0.0, -1.0, 0.0 }
but this didnt work.
it DOES work however if i set
{ 0.0, -1.0, -1.0 }
i dont understand this.
ok, whew, i appreciate anything you guys can help me with. thanks