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| author | Chris Wilson <chris@chris-wilson.co.uk> | 2008-12-17 09:32:16 +0000 |
|---|---|---|
| committer | Chris Wilson <chris@chris-wilson.co.uk> | 2009-08-29 08:08:28 +0100 |
| commit | f8bb3617c3a7ec598c42eff1f8562e3ccc95127f (patch) | |
| tree | f6c8f949ab44ca126053fb5cea2b9b88a4748cb8 /src/cairo-wideint.c | |
| parent | 7c499db8afe8a7cf8c512ec166fe7dbf11a25c02 (diff) | |
| download | cairo-f8bb3617c3a7ec598c42eff1f8562e3ccc95127f.tar.gz | |
Eliminate self-intersecting strokes.
We refactor the surface fallbacks to convert full strokes and fills to the
intermediate polygon representation (as opposed to before where we
returned the trapezoidal representation). This allow greater flexibility
to choose how then to rasterize the polygon. Where possible we use the
local spans rasteriser for its increased performance, but still have the
option to use the tessellator instead (for example, with the current
Render protocol which does not yet have a polygon image).
In order to accommodate this, the spans interface is tweaked to accept
whole polygons instead of a path and the tessellator is tweaked for speed.
Performance Impact
==================
...
Still measuring, expecting some severe regressions.
...
Diffstat (limited to 'src/cairo-wideint.c')
| -rw-r--r-- | src/cairo-wideint.c | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/src/cairo-wideint.c b/src/cairo-wideint.c index 456559386..1843a6027 100644 --- a/src/cairo-wideint.c +++ b/src/cairo-wideint.c @@ -39,16 +39,6 @@ #define _cairo_uint32s_to_uint64(h,l) ((uint64_t) (h) << 32 | (l)) -cairo_uquorem64_t -_cairo_uint64_divrem (cairo_uint64_t num, cairo_uint64_t den) -{ - cairo_uquorem64_t qr; - - qr.quo = num / den; - qr.rem = num % den; - return qr; -} - #else cairo_uint64_t @@ -317,30 +307,6 @@ _cairo_uint64_divrem (cairo_uint64_t num, cairo_uint64_t den) #endif /* !HAVE_UINT64_T */ -cairo_quorem64_t -_cairo_int64_divrem (cairo_int64_t num, cairo_int64_t den) -{ - int num_neg = _cairo_int64_negative (num); - int den_neg = _cairo_int64_negative (den); - cairo_uquorem64_t uqr; - cairo_quorem64_t qr; - - if (num_neg) - num = _cairo_int64_negate (num); - if (den_neg) - den = _cairo_int64_negate (den); - uqr = _cairo_uint64_divrem (num, den); - if (num_neg) - qr.rem = _cairo_int64_negate (uqr.rem); - else - qr.rem = uqr.rem; - if (num_neg != den_neg) - qr.quo = (cairo_int64_t) _cairo_int64_negate (uqr.quo); - else - qr.quo = (cairo_int64_t) uqr.quo; - return qr; -} - #if HAVE_UINT128_T cairo_uquorem128_t |