diff options
author | reed <reed@chromium.org> | 2015-02-06 21:08:33 -0800 |
---|---|---|
committer | Commit bot <commit-bot@chromium.org> | 2015-02-06 21:08:33 -0800 |
commit | 0692c5f2c1df7d1b66c62025200dd666f9ecd311 (patch) | |
tree | d19705f00b81f38bb5f47f14a3e3e411a5a1283c /src/core/SkScan_Path.cpp | |
parent | 2322115952c15c72a623837879cac1f85894b1b6 (diff) |
Revert of Faster edge re-sort, drop trailing edges (patchset #2 id:20001 of https://codereview.chromium.org/907623002/)
Reason for revert:
still layout failures
Original issue's description:
> Faster edge re-sort, drop trailing edges
>
> (patchset #4 id:60001 of https://codereview.chromium.org/891613003/)"
>
> This reverts commit c319d075eab86cacfd7aba27859b72bbf8fc0a64.
>
> BUG=skia:
> TBR=
>
> Committed: https://skia.googlesource.com/skia/+/2322115952c15c72a623837879cac1f85894b1b6
TBR=
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:
Review URL: https://codereview.chromium.org/886503010
Diffstat (limited to 'src/core/SkScan_Path.cpp')
-rw-r--r-- | src/core/SkScan_Path.cpp | 62 |
1 files changed, 28 insertions, 34 deletions
diff --git a/src/core/SkScan_Path.cpp b/src/core/SkScan_Path.cpp index 430cd1d841..5d9e0ca2a6 100644 --- a/src/core/SkScan_Path.cpp +++ b/src/core/SkScan_Path.cpp @@ -45,23 +45,34 @@ static inline void remove_edge(SkEdge* edge) { edge->fNext->fPrev = edge->fPrev; } -static inline void insert_edge_after(SkEdge* edge, SkEdge* afterMe) { - edge->fPrev = afterMe; - edge->fNext = afterMe->fNext; - afterMe->fNext->fPrev = edge; - afterMe->fNext = edge; +static inline void swap_edges(SkEdge* prev, SkEdge* next) { + SkASSERT(prev->fNext == next && next->fPrev == prev); + + // remove prev from the list + prev->fPrev->fNext = next; + next->fPrev = prev->fPrev; + + // insert prev after next + prev->fNext = next->fNext; + next->fNext->fPrev = prev; + next->fNext = prev; + prev->fPrev = next; } static void backward_insert_edge_based_on_x(SkEdge* edge SkDECLAREPARAM(int, curr_y)) { SkFixed x = edge->fX; - SkEdge* prev = edge->fPrev; - while (prev->fX > x) { - prev = prev->fPrev; - } - if (prev->fNext != edge) { - remove_edge(edge); - insert_edge_after(edge, prev); + for (;;) { + SkEdge* prev = edge->fPrev; + + // add 1 to curr_y since we may have added new edges (built from curves) + // that start on the next scanline + SkASSERT(prev && prev->fFirstY <= curr_y + 1); + + if (prev->fX <= x) { + break; + } + swap_edges(prev, edge); } } @@ -102,7 +113,7 @@ typedef void (*PrePostProc)(SkBlitter* blitter, int y, bool isStartOfScanline); static void walk_edges(SkEdge* prevHead, SkPath::FillType fillType, SkBlitter* blitter, int start_y, int stop_y, - PrePostProc proc, int rightClip) { + PrePostProc proc) { validate_sort(prevHead->fNext); int curr_y = start_y; @@ -172,14 +183,6 @@ static void walk_edges(SkEdge* prevHead, SkPath::FillType fillType, SkASSERT(currE); } - // was our right-edge culled away? - if (in_interval) { - int width = rightClip - left; - if (width > 0) { - blitter->blitH(left, curr_y, width); - } - } - if (proc) { proc(blitter, curr_y, PREPOST_END); // post-proc } @@ -427,15 +430,13 @@ static SkEdge* sort_edges(SkEdge* list[], int count, SkEdge** last) { // clipRect (if no null) has already been shifted up // void sk_fill_path(const SkPath& path, const SkIRect* clipRect, SkBlitter* blitter, - int start_y, int stop_y, int shiftEdgesUp, const SkRegion& clipRgn) { + int start_y, int stop_y, int shiftEdgesUp, + const SkRegion& clipRgn) { SkASSERT(blitter); SkEdgeBuilder builder; - // If we're convex, then we need both edges, even the right edge is past the clip - const bool cullToTheRight = !path.isConvex(); - - int count = builder.build(path, clipRect, shiftEdgesUp, cullToTheRight); + int count = builder.build(path, clipRect, shiftEdgesUp); SkEdge** list = builder.edgeList(); if (count < 2) { @@ -502,14 +503,7 @@ void sk_fill_path(const SkPath& path, const SkIRect* clipRect, SkBlitter* blitte if (path.isConvex() && (NULL == proc)) { walk_convex_edges(&headEdge, path.getFillType(), blitter, start_y, stop_y, NULL); } else { - int rightEdge; - if (clipRect) { - rightEdge = clipRect->right(); - } else { - rightEdge = SkScalarRoundToInt(path.getBounds().right()) << shiftEdgesUp; - } - - walk_edges(&headEdge, path.getFillType(), blitter, start_y, stop_y, proc, rightEdge); + walk_edges(&headEdge, path.getFillType(), blitter, start_y, stop_y, proc); } } |