static cairo_int_status_t
_draw_simple_quad_path (cairo_gl_context_t *ctx,
cairo_gl_composite_t *setup,
const cairo_path_fixed_t *path)
{
cairo_point_t triangle[3];
cairo_int_status_t status;
const cairo_point_t *points;
points = cairo_path_head (path)->points;
triangle[0] = points[0];
triangle[1] = points[1];
triangle[2] = points[2];
status = _cairo_gl_composite_emit_triangle_as_tristrip (ctx, setup, triangle);
if (status)
return status;
triangle[0] = points[2];
triangle[1] = points[3];
triangle[2] = points[0];
return _cairo_gl_composite_emit_triangle_as_tristrip (ctx, setup, triangle);
}
cairo_status_t
_cairo_path_fixed_init_copy (cairo_path_fixed_t *path,
const cairo_path_fixed_t *other)
{
cairo_path_buf_t *buf, *other_buf;
unsigned int num_points, num_ops;
VG (VALGRIND_MAKE_MEM_UNDEFINED (path, sizeof (cairo_path_fixed_t)));
cairo_list_init (&path->buf.base.link);
path->buf.base.op = path->buf.op;
path->buf.base.points = path->buf.points;
path->buf.base.size_ops = ARRAY_LENGTH (path->buf.op);
path->buf.base.size_points = ARRAY_LENGTH (path->buf.points);
path->current_point = other->current_point;
path->last_move_point = other->last_move_point;
path->has_last_move_point = other->has_last_move_point;
path->has_current_point = other->has_current_point;
path->has_curve_to = other->has_curve_to;
path->is_rectilinear = other->is_rectilinear;
path->maybe_fill_region = other->maybe_fill_region;
path->is_empty_fill = other->is_empty_fill;
path->extents = other->extents;
path->buf.base.num_ops = other->buf.base.num_ops;
path->buf.base.num_points = other->buf.base.num_points;
memcpy (path->buf.op, other->buf.base.op,
other->buf.base.num_ops * sizeof (other->buf.op[0]));
memcpy (path->buf.points, other->buf.points,
other->buf.base.num_points * sizeof (other->buf.points[0]));
num_points = num_ops = 0;
for (other_buf = cairo_path_buf_next (cairo_path_head (other));
other_buf != cairo_path_head (other);
other_buf = cairo_path_buf_next (other_buf))
{
num_ops += other_buf->num_ops;
num_points += other_buf->num_points;
}
if (num_ops) {
buf = _cairo_path_buf_create (num_ops, num_points);
if (unlikely (buf == NULL)) {
_cairo_path_fixed_fini (path);
return _cairo_error (CAIRO_STATUS_NO_MEMORY);
}
for (other_buf = cairo_path_buf_next (cairo_path_head (other));
other_buf != cairo_path_head (other);
other_buf = cairo_path_buf_next (other_buf))
{
memcpy (buf->op + buf->num_ops, other_buf->op,
other_buf->num_ops * sizeof (buf->op[0]));
buf->num_ops += other_buf->num_ops;
memcpy (buf->points + buf->num_points, other_buf->points,
other_buf->num_points * sizeof (buf->points[0]));
buf->num_points += other_buf->num_points;
}
_cairo_path_fixed_add_buf (path, buf);
}
return CAIRO_STATUS_SUCCESS;
}
