thirdparty/scummvm
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TINYGL: Done some more optimization on maths code.

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This commit is contained in:
Stefano Musumeci 2014-06-08 15:20:27 +02:00
parent 5642d195e0
commit d45c455be4
7 changed files with 94 additions and 91 deletions
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23
graphics/tinygl/light.cpp
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@ -79,14 +79,18 @@ void glopLight(GLContext *c, GLParam *p) {
l->position = pos;
if (l->position.W == 0) {
l->norm_position = pos.toVector3();
l->norm_position.X = pos.X;
l->norm_position.Y = pos.Y;
l->norm_position.Z = pos.Z;
l->norm_position.normalize();
}
}
break;
case TGL_SPOT_DIRECTION:
l->spot_direction = v.toVector3();
l->norm_spot_direction = v.toVector3();
l->spot_direction.X = v.X;
l->spot_direction.Y = v.Y;
l->spot_direction.Z = v.Z;
l->norm_spot_direction = l->spot_direction;
l->norm_spot_direction.normalize();
break;
case TGL_SPOT_EXPONENT:
@ -193,7 +197,9 @@ void gl_shade_vertex(GLContext *c, GLVertex *v) {
if (l->position.W == 0) {
// light at infinity
d = l->position.toVector3();
d.X = l->position.X;
d.Y = l->position.Y;
d.Z = l->position.Z;
att = 1;
} else {
// distance attenuation
@ -237,7 +243,9 @@ void gl_shade_vertex(GLContext *c, GLVertex *v) {
if (c->local_light_model) {
Vector3 vcoord;
vcoord = v->ec.toVector3();
vcoord.X = v->ec.X;
vcoord.Y = v->ec.Y;
vcoord.Z = v->ec.Z;
vcoord.normalize();
s.X = (d.X - vcoord.X);
s.Y = (d.Y - vcoord.X);
@ -280,7 +288,10 @@ void gl_shade_vertex(GLContext *c, GLVertex *v) {
B += att * lB;
}
v->color = Vector4(clampf(R, 0, 1), clampf(G, 0, 1), clampf(B, 0, 1), A);
v->color.X = clampf(R, 0, 1);
v->color.Y = clampf(G, 0, 1);
v->color.Z = clampf(B, 0, 1);
v->color.W = clampf(A, 0, 1);
}
} // end of namespace TinyGL