static void
PictureTransformBounds (BoxPtr b, PictTransformPtr matrix)
{
PictVector v[4];
int i;
int x1, y1, x2, y2;
v[0].vector[0] = F (b->x1); v[0].vector[1] = F (b->y1); v[0].vector[2] = F(1);
v[1].vector[0] = F (b->x2); v[1].vector[1] = F (b->y1); v[1].vector[2] = F(1);
v[2].vector[0] = F (b->x2); v[2].vector[1] = F (b->y2); v[2].vector[2] = F(1);
v[3].vector[0] = F (b->x1); v[3].vector[1] = F (b->y2); v[3].vector[2] = F(1);
for (i = 0; i < 4; i++)
{
PictureTransformPoint (matrix, &v[i]);
x1 = xFixedToInt (v[i].vector[0]);
y1 = xFixedToInt (v[i].vector[1]);
x2 = xFixedToInt (xFixedCeil (v[i].vector[0]));
y2 = xFixedToInt (xFixedCeil (v[i].vector[1]));
if (i == 0)
{
b->x1 = x1; b->y1 = y1;
b->x2 = x2; b->y2 = y2;
}
else
{
if (x1 < b->x1) b->x1 = x1;
if (y1 < b->y1) b->y1 = y1;
if (x2 > b->x2) b->x2 = x2;
if (y2 > b->y2) b->y2 = y2;
}
}
}
static inline void
NV40EXATransformCoord(PictTransformPtr t, int x, int y, float sx, float sy,
float *x_ret, float *y_ret)
{
if (t) {
PictVector v;
v.vector[0] = IntToxFixed(x);
v.vector[1] = IntToxFixed(y);
v.vector[2] = xFixed1;
PictureTransformPoint(t, &v);
*x_ret = xFixedToFloat(v.vector[0]) / sx;
*y_ret = xFixedToFloat(v.vector[1]) / sy;
} else {
*x_ret = (float)x / sx;
*y_ret = (float)y / sy;
}
}
static inline void
transform_vertex(PictTransformPtr t, int i, PictVector vs[])
{
if (t)
PictureTransformPoint(t, &vs[i]);
}
