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skia2/gn/gm.gni
Stephen White e7a364d435 GrTessellator: fix artifact with exactly-1-px-wide edges. 
When path features are exactly a pixel wide, the extruded inner edges
can become collinear and then be removed, since their winding is
zero. We need these edges to be preserved through triangulation,
otherwise opaque portions of the geometry can become transparent.

Since the simplify() pass can handle zero-winding edges just fine, the
the fix is to simply not remove them.

In addition, this changes refactors out disconnect() from all the calls
to remove_edge_above()/remove_edge_below(). It also renames the remaining
function erase_edge() (since it's now unconditional).

Add a new test to a new "thinconcavepaths" GM.

BUG=680260
NOTRY=true

Change-Id: I1d3a436c95a01c4d4ef5dc05503de4312677f65d
Reviewed-on: https://skia-review.googlesource.com/6902
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Stephan White <senorblanco@chromium.org>
2017-01-12 05:28:22 +00:00

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# Copyright 2016 Google Inc.
#
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# Things are easiest for everyone if these source paths are absolute.
_gm = get_path_info("../gm", "abspath")
gm_sources = [
"$_gm/aaa.cpp",
"$_gm/aaclip.cpp",
"$_gm/aarectmodes.cpp",
"$_gm/aaxfermodes.cpp",
"$_gm/addarc.cpp",
"$_gm/all_bitmap_configs.cpp",
"$_gm/alphagradients.cpp",
"$_gm/animatedGif.cpp",
"$_gm/animatedimageblurs.cpp",
"$_gm/anisotropic.cpp",
"$_gm/annotated_text.cpp",
"$_gm/arcofzorro.cpp",
"$_gm/arcto.cpp",
"$_gm/arithmode.cpp",
"$_gm/badpaint.cpp",
"$_gm/beziereffects.cpp",
"$_gm/beziers.cpp",
"$_gm/bigblurs.cpp",
"$_gm/bigmatrix.cpp",
"$_gm/bigrrectaaeffect.cpp",
"$_gm/bigtext.cpp",
"$_gm/bigtileimagefilter.cpp",
"$_gm/bitmapcopy.cpp",
"$_gm/bitmapfilters.cpp",
"$_gm/bitmapimage.cpp",
"$_gm/bitmappremul.cpp",
"$_gm/bitmaprect.cpp",
"$_gm/bitmaprecttest.cpp",
"$_gm/bitmapshader.cpp",
"$_gm/bleed.cpp",
"$_gm/blend.cpp",
"$_gm/blurcircles.cpp",
"$_gm/blurcircles2.cpp",
"$_gm/blurquickreject.cpp",
"$_gm/blurrect.cpp",
"$_gm/blurredclippedcircle.cpp",
"$_gm/blurroundrect.cpp",
"$_gm/blurs.cpp",
"$_gm/bmpfilterqualityrepeat.cpp",
"$_gm/bug5252.cpp",
"$_gm/bug530095.cpp",
"$_gm/bug615686.cpp",
"$_gm/cgm.c",
"$_gm/cgms.cpp",
"$_gm/codec_scaled.cpp",
"$_gm/circles.cpp",
"$_gm/circulararcs.cpp",
"$_gm/circularclips.cpp",
"$_gm/clip_error.cpp",
"$_gm/clip_strokerect.cpp",
"$_gm/clipdrawdraw.cpp",
"$_gm/clippedbitmapshaders.cpp",
"$_gm/color4f.cpp",
"$_gm/colorcube.cpp",
"$_gm/coloremoji.cpp",
"$_gm/colorfilteralpha8.cpp",
"$_gm/colorfilterimagefilter.cpp",
"$_gm/colorfilters.cpp",
"$_gm/colormatrix.cpp",
"$_gm/colorspacexform.cpp",
"$_gm/colortype.cpp",
"$_gm/colortypexfermode.cpp",
"$_gm/colorwheel.cpp",
"$_gm/complexclip.cpp",
"$_gm/complexclip_blur_tiled.cpp",
"$_gm/complexclip2.cpp",
"$_gm/complexclip3.cpp",
"$_gm/complexclip4.cpp",
"$_gm/composeshader.cpp",
"$_gm/concavepaths.cpp",
"$_gm/conicpaths.cpp",
"$_gm/constcolorprocessor.cpp",
"$_gm/convex_all_line_paths.cpp",
"$_gm/convexpaths.cpp",
"$_gm/convexpolyclip.cpp",
"$_gm/convexpolyeffect.cpp",
"$_gm/copyTo4444.cpp",
"$_gm/croppedrects.cpp",
"$_gm/cubicpaths.cpp",
"$_gm/dashcircle.cpp",
"$_gm/dashcubics.cpp",
"$_gm/dashing.cpp",
"$_gm/deferredtextureimage.cpp",
"$_gm/degeneratesegments.cpp",
"$_gm/dftext.cpp",
"$_gm/discard.cpp",
"$_gm/displacement.cpp",
"$_gm/distantclip.cpp",
"$_gm/downsamplebitmap.cpp",
"$_gm/draw_bitmap_rect_skbug4374.cpp",
"$_gm/drawable.cpp",
"$_gm/drawatlas.cpp",
"$_gm/drawatlascolor.cpp",
"$_gm/drawbitmaprect.cpp",
"$_gm/drawfilter.cpp",
"$_gm/drawlooper.cpp",
"$_gm/drawminibitmaprect.cpp",
"$_gm/drawregion.cpp",
"$_gm/drawregionmodes.cpp",
"$_gm/dropshadowimagefilter.cpp",
"$_gm/drrect.cpp",
"$_gm/dstreadshuffle.cpp",
"$_gm/emboss.cpp",
"$_gm/emptypath.cpp",
"$_gm/encode.cpp",
"$_gm/encode-platform.cpp",
"$_gm/encode-srgb.cpp",
"$_gm/extractbitmap.cpp",
"$_gm/fadefilter.cpp",
"$_gm/fatpathfill.cpp",
"$_gm/filltypes.cpp",
"$_gm/filltypespersp.cpp",
"$_gm/filterbitmap.cpp",
"$_gm/filterbug.cpp",
"$_gm/filterfastbounds.cpp",
"$_gm/filterindiabox.cpp",
"$_gm/fontcache.cpp",
"$_gm/fontmgr.cpp",
"$_gm/fontscaler.cpp",
"$_gm/fontscalerdistortable.cpp",
"$_gm/gamma.cpp",
"$_gm/gammacolorfilter.cpp",
"$_gm/gammatext.cpp",
"$_gm/gamut.cpp",
"$_gm/gaussianedge.cpp",
"$_gm/getpostextpath.cpp",
"$_gm/giantbitmap.cpp",
"$_gm/glyph_pos.cpp",
"$_gm/glyph_pos_align.cpp",
"$_gm/gm.cpp",
"$_gm/gradient_matrix.cpp",
"$_gm/gradientDirtyLaundry.cpp",
"$_gm/gradients.cpp",
"$_gm/gradients_2pt_conical.cpp",
"$_gm/gradients_no_texture.cpp",
"$_gm/gradtext.cpp",
"$_gm/grayscalejpg.cpp",
"$_gm/hairlines.cpp",
"$_gm/hairmodes.cpp",
"$_gm/hardstop_gradients.cpp",
"$_gm/hittestpath.cpp",
"$_gm/image.cpp",
"$_gm/image_pict.cpp",
"$_gm/image_shader.cpp",
"$_gm/imagealphathreshold.cpp",
"$_gm/imageblur.cpp",
"$_gm/imageblur2.cpp",
"$_gm/imageblurtiled.cpp",
"$_gm/imagefilters.cpp",
"$_gm/imagefiltersbase.cpp",
"$_gm/imagefiltersclipped.cpp",
"$_gm/imagefilterscropexpand.cpp",
"$_gm/imagefilterscropped.cpp",
"$_gm/imagefiltersgraph.cpp",
"$_gm/imagefiltersscaled.cpp",
"$_gm/imagefiltersstroked.cpp",
"$_gm/imagefilterstransformed.cpp",
"$_gm/imagefromyuvtextures.cpp",
"$_gm/imagegeneratorexternal.cpp",
"$_gm/imagemagnifier.cpp",
"$_gm/imagemakewithfilter.cpp",
"$_gm/imagemasksubset.cpp",
"$_gm/imageresizetiled.cpp",
"$_gm/imagescalealigned.cpp",
"$_gm/imagesource.cpp",
"$_gm/imagesource2.cpp",
"$_gm/imagetoyuvplanes.cpp",
"$_gm/internal_links.cpp",
"$_gm/inversepaths.cpp",
"$_gm/largeglyphblur.cpp",
"$_gm/lattice.cpp",
"$_gm/lcdblendmodes.cpp",
"$_gm/lcdoverlap.cpp",
"$_gm/lcdtext.cpp",
"$_gm/lighting.cpp",
"$_gm/lightingshader.cpp",
"$_gm/lightingshader2.cpp",
"$_gm/lightingshaderbevel.cpp",
"$_gm/linepaths.cpp",
"$_gm/localmatriximagefilter.cpp",
"$_gm/lumafilter.cpp",
"$_gm/matrixconvolution.cpp",
"$_gm/matriximagefilter.cpp",
"$_gm/megalooper.cpp",
"$_gm/mipmap.cpp",
"$_gm/mixedtextblobs.cpp",
"$_gm/modecolorfilters.cpp",
"$_gm/morphology.cpp",
"$_gm/multipicturedraw.cpp",
"$_gm/nested.cpp",
"$_gm/ninepatchstretch.cpp",
"$_gm/nonclosedpaths.cpp",
"$_gm/occludedrrectblur.cpp",
"$_gm/offsetimagefilter.cpp",
"$_gm/ovals.cpp",
"$_gm/overdrawcolorfilter.cpp",
"$_gm/OverStroke.cpp",
"$_gm/patch.cpp",
"$_gm/patchgrid.cpp",
"$_gm/path_stroke_with_zero_length.cpp",
"$_gm/pathcontourstart.cpp",
"$_gm/patheffects.cpp",
"$_gm/pathfill.cpp",
"$_gm/pathinterior.cpp",
"$_gm/pathmaskcache.cpp",
"$_gm/pathopsinverse.cpp",
"$_gm/pathopsskpclip.cpp",
"$_gm/pathreverse.cpp",
"$_gm/pdf_never_embed.cpp",
"$_gm/perlinnoise.cpp",
"$_gm/perspshaders.cpp",
"$_gm/picture.cpp",
"$_gm/pictureimagefilter.cpp",
"$_gm/pictureimagegenerator.cpp",
"$_gm/pictureshader.cpp",
"$_gm/pictureshadertile.cpp",
"$_gm/pixelsnap.cpp",
"$_gm/plus.cpp",
"$_gm/points.cpp",
"$_gm/poly2poly.cpp",
"$_gm/polygons.cpp",
"$_gm/quadpaths.cpp",
"$_gm/readpixels.cpp",
"$_gm/recordopts.cpp",
"$_gm/rectangletexture.cpp",
"$_gm/rects.cpp",
"$_gm/repeated_bitmap.cpp",
"$_gm/resizeimagefilter.cpp",
"$_gm/reveal.cpp",
"$_gm/roundrects.cpp",
"$_gm/rrect.cpp",
"$_gm/rrectclipdrawpaint.cpp",
"$_gm/rrects.cpp",
"$_gm/samplerstress.cpp",
"$_gm/scaledstrokes.cpp",
"$_gm/shaderbounds.cpp",
"$_gm/shadertext.cpp",
"$_gm/shadertext2.cpp",
"$_gm/shadertext3.cpp",
"$_gm/shadowmaps.cpp",
"$_gm/shadows.cpp",
"$_gm/shallowgradient.cpp",
"$_gm/shapes.cpp",
"$_gm/showmiplevels.cpp",
"$_gm/simpleaaclip.cpp",
"$_gm/simplerect.cpp",
"$_gm/skbug_257.cpp",
"$_gm/skbug_4868.cpp",
"$_gm/skbug_5321.cpp",
"$_gm/skbug1719.cpp",
"$_gm/SkLinearBitmapPipelineGM.cpp",
"$_gm/smallarc.cpp",
"$_gm/smallimage.cpp",
"$_gm/smallpaths.cpp",
"$_gm/spritebitmap.cpp",
"$_gm/srcmode.cpp",
"$_gm/stlouisarch.cpp",
"$_gm/stringart.cpp",
"$_gm/stroke_rect_shader.cpp",
"$_gm/strokedlines.cpp",
"$_gm/strokefill.cpp",
"$_gm/strokerect.cpp",
"$_gm/strokerects.cpp",
"$_gm/strokes.cpp",
"$_gm/stroketext.cpp",
"$_gm/subsetshader.cpp",
"$_gm/surface.cpp",
"$_gm/tablecolorfilter.cpp",
"$_gm/tallstretchedbitmaps.cpp",
"$_gm/texdata.cpp",
"$_gm/textblob.cpp",
"$_gm/textblobblockreordering.cpp",
"$_gm/textblobcolortrans.cpp",
"$_gm/textblobgeometrychange.cpp",
"$_gm/textbloblooper.cpp",
"$_gm/textblobmixedsizes.cpp",
"$_gm/textblobrandomfont.cpp",
"$_gm/textblobshader.cpp",
"$_gm/textblobtransforms.cpp",
"$_gm/textblobuseaftergpufree.cpp",
"$_gm/texteffects.cpp",
"$_gm/texturedomaineffect.cpp",
"$_gm/thinconcavepaths.cpp",
"$_gm/thinrects.cpp",
"$_gm/thinstrokedrects.cpp",
"$_gm/tiledscaledbitmap.cpp",
"$_gm/tileimagefilter.cpp",
"$_gm/tilemodes.cpp",
"$_gm/tilemodes_scaled.cpp",
"$_gm/tinybitmap.cpp",
"$_gm/transparency.cpp",
"$_gm/typeface.cpp",
"$_gm/variedtext.cpp",
"$_gm/vertices.cpp",
"$_gm/verttext.cpp",
"$_gm/verttext2.cpp",
"$_gm/verylargebitmap.cpp",
"$_gm/windowrectangles.cpp",
"$_gm/xfermodeimagefilter.cpp",
"$_gm/xfermodes.cpp",
"$_gm/xfermodes2.cpp",
"$_gm/xfermodes3.cpp",
"$_gm/yuvtorgbeffect.cpp",
]
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