c0bd9f9fe5
Current strategy: everything from the top
Things to look at first are the manual changes:
- added tools/rewrite_includes.py
- removed -Idirectives from BUILD.gn
- various compile.sh simplifications
- tweak tools/embed_resources.py
- update gn/find_headers.py to write paths from the top
- update gn/gn_to_bp.py SkUserConfig.h layout
so that #include "include/config/SkUserConfig.h" always
gets the header we want.
No-Presubmit: true
Change-Id: I73a4b181654e0e38d229bc456c0d0854bae3363e
Reviewed-on: https://skia-review.googlesource.com/c/skia/+/209706
Commit-Queue: Mike Klein <mtklein@google.com>
Reviewed-by: Hal Canary <halcanary@google.com>
Reviewed-by: Brian Osman <brianosman@google.com>
Reviewed-by: Florin Malita <fmalita@chromium.org>
48 lines
1.6 KiB
C++
48 lines
1.6 KiB
C++
/*
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* Copyright 2017 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "gm/gm.h"
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#include "include/core/SkSurface.h"
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// This GM reproduces skia:6783, which demonstrated a bug in repeat and mirror
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// image sampling tiling modes as implemented in software. We want to tile to
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// [0,limit), and the old incorrect logic was:
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//
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// limit = ulp_before(limit)
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// val = val - floor(val/limit)*limit (This is repeat; mirror is similar.)
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//
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// while the correct logic is more like:
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//
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// val = val - floor(val/limit)*limit
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// val = min(val, ulp_before(limit))
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//
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// You would see ugly jaggies on the blue/yellow edge near the bottom left if
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// the bug were still present. All stripes should now look roughly the same.
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DEF_SIMPLE_GM(bug6783, canvas, 500, 500) {
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sk_sp<SkSurface> surface = SkSurface::MakeRasterN32Premul(100, 100);
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SkPaint p;
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p.setColor(SK_ColorYELLOW);
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surface->getCanvas()->drawPaint(p);
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p.setColor(SK_ColorBLUE);
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surface->getCanvas()->drawRect(SkRect::MakeWH(50, 100), p);
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sk_sp<SkImage> img = surface->makeImageSnapshot();
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SkMatrix m = SkMatrix::Concat(SkMatrix::MakeTrans(25, 214),
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SkMatrix::MakeScale(2, 2));
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m.preSkew(0.5f, 0.5f);
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// The bug was present at all filter levels, but you might not notice it at kNone.
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p.setFilterQuality(kLow_SkFilterQuality);
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// It's only important to repeat or mirror in x to show off the bug.
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p.setShader(img->makeShader(SkTileMode::kRepeat, SkTileMode::kClamp, &m));
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canvas->drawPaint(p);
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}
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