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Make miter join code use tessellate_convex_quad rather than tessellate_polygon

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This provides an additional 22-29% speedup on top of the previous
fix for stroking paths with many miter joins:

image-rgba  world_map-800  459.73 0.27% -> 356.80 0.32%:  1.29x speedup
▎
image-rgb   world_map-800  458.83 0.37% -> 358.08 0.41%:  1.28x speedup
▎
 xlib-rgba  world_map-800  566.57 0.23% -> 463.84 0.31%:  1.22x speedup
▎
 xlib-rgb   world_map-800  562.31 0.64% -> 460.51 0.83%:  1.22x speedup
▎
This commit is contained in:
Carl Worth 2006-11-11 10:43:11 -08:00
parent 3d53f623fa
commit 29b01f93ca
1 changed files with 7 additions and 13 deletions
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20
src/cairo-path-stroke.c
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@ -201,7 +201,6 @@ _cairo_stroker_face_clockwise (cairo_stroke_face_t *in, cairo_stroke_face_t *out
static cairo_status_t
_cairo_stroker_join (cairo_stroker_t *stroker, cairo_stroke_face_t *in, cairo_stroke_face_t *out)
{
cairo_status_t status;
int clockwise = _cairo_stroker_face_clockwise (out, in);
cairo_point_t *inpt, *outpt;
@ -296,8 +295,8 @@ _cairo_stroker_join (cairo_stroker_t *stroker, cairo_stroke_face_t *in, cairo_st
double x1, y1, x2, y2;
double mx, my;
double dx1, dx2, dy1, dy2;
cairo_polygon_t polygon;
cairo_point_t outer;
cairo_point_t quad[4];
/*
* we've got the points already transformed to device
@ -339,18 +338,13 @@ _cairo_stroker_join (cairo_stroker_t *stroker, cairo_stroke_face_t *in, cairo_st
*/
outer.x = _cairo_fixed_from_double (mx);
outer.y = _cairo_fixed_from_double (my);
_cairo_polygon_init (&polygon);
_cairo_polygon_move_to (&polygon, &in->point);
_cairo_polygon_line_to (&polygon, inpt);
_cairo_polygon_line_to (&polygon, &outer);
_cairo_polygon_line_to (&polygon, outpt);
_cairo_polygon_close (&polygon);
status = _cairo_traps_tessellate_polygon (stroker->traps,
&polygon,
CAIRO_FILL_RULE_WINDING);
_cairo_polygon_fini (&polygon);
return status;
quad[0] = in->point;
quad[1] = *inpt;
quad[2] = outer;
quad[3] = *outpt;
return _cairo_traps_tessellate_convex_quad (stroker->traps, quad);
}
/* fall through ... */
}