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author | commit-bot@chromium.org <commit-bot@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> | 2013-10-16 13:53:54 +0000 |
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committer | commit-bot@chromium.org <commit-bot@chromium.org@2bbb7eff-a529-9590-31e7-b0007b416f81> | 2013-10-16 13:53:54 +0000 |
commit | 6397217b300ec18704d49c54f5b30119dc799923 (patch) | |
tree | 931c94d5afe2054c16acf7b8197a41a7a1de7f7d /gm/skbug1719.cpp | |
parent | 6001ee3a34983ad70231eb1f06694baca4dcbf9b (diff) |
detach blur result texture when it is the same texture used to render path mask
R=robertphillips@google.com
Author: bsalomon@google.com
Review URL: https://codereview.chromium.org/26968006
git-svn-id: http://skia.googlecode.com/svn/trunk@11805 2bbb7eff-a529-9590-31e7-b0007b416f81
Diffstat (limited to 'gm/skbug1719.cpp')
-rw-r--r-- | gm/skbug1719.cpp | 102 |
1 files changed, 102 insertions, 0 deletions
diff --git a/gm/skbug1719.cpp b/gm/skbug1719.cpp new file mode 100644 index 0000000000..01bb844a87 --- /dev/null +++ b/gm/skbug1719.cpp @@ -0,0 +1,102 @@ +/* + * Copyright 2013 Google Inc. + * + * Use of this source code is governed by a BSD-style license that can be + * found in the LICENSE file. + */ + +#include "gm.h" +#include "SkColorFilter.h" +#include "SkBlurMaskFilter.h" + +namespace skiagm { + +/** + * This test exercises bug 1719. An anti-aliased blurred path is rendered through a soft clip. On + * the GPU a scratch texture was used to hold the original path mask as well as the blurred path + * result. The same texture is then incorrectly used to generate the soft clip mask for the draw. + * Thus the same texture is used for both the blur mask and soft mask in a single draw. + * + * The correct image should look like a thin stroked round rect. + */ +class SkBug1719GM : public GM { +public: + SkBug1719GM() {} + +protected: + virtual SkString onShortName() SK_OVERRIDE { + return SkString("skbug1719"); + } + + virtual SkISize onISize() SK_OVERRIDE { + return make_isize(300, 100); + } + + virtual void onDrawBackground(SkCanvas* canvas) SK_OVERRIDE { + SkPaint bgPaint; + bgPaint.setColor(0xFF303030); + canvas->drawPaint(bgPaint); + } + + virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { + canvas->translate(SkIntToScalar(-800), SkIntToScalar(-650)); + + // The data is lifted from an SKP that exhibited the bug. + + // This is a round rect. + SkPath clipPath; + clipPath.moveTo(832.f, 654.f); + clipPath.lineTo(1034.f, 654.f); + clipPath.cubicTo(1038.4183f, 654.f, 1042.f, 657.58173f, 1042.f, 662.f); + clipPath.lineTo(1042.f, 724.f); + clipPath.cubicTo(1042.f, 728.41827f, 1038.4183f, 732.f, 1034.f, 732.f); + clipPath.lineTo(832.f, 732.f); + clipPath.cubicTo(827.58173f, 732.f, 824.f, 728.41827f, 824.f, 724.f); + clipPath.lineTo(824.f, 662.f); + clipPath.cubicTo(824.f, 657.58173f, 827.58173f, 654.f, 832.f, 654.f); + clipPath.close(); + + // This is a round rect nested inside a rect. + SkPath drawPath; + drawPath.moveTo(823.f, 653.f); + drawPath.lineTo(1043.f, 653.f); + drawPath.lineTo(1043.f, 733.f); + drawPath.lineTo(823.f, 733.f); + drawPath.lineTo(823.f, 653.f); + drawPath.close(); + drawPath.moveTo(832.f, 654.f); + drawPath.lineTo(1034.f, 654.f); + drawPath.cubicTo(1038.4183f, 654.f, 1042.f, 657.58173f, 1042.f, 662.f); + drawPath.lineTo(1042.f, 724.f); + drawPath.cubicTo(1042.f, 728.41827f, 1038.4183f, 732.f, 1034.f, 732.f); + drawPath.lineTo(832.f, 732.f); + drawPath.cubicTo(827.58173f, 732.f, 824.f, 728.41827f, 824.f, 724.f); + drawPath.lineTo(824.f, 662.f); + drawPath.cubicTo(824.f, 657.58173f, 827.58173f, 654.f, 832.f, 654.f); + drawPath.close(); + drawPath.setFillType(SkPath::kEvenOdd_FillType); + + SkPaint paint; + paint.setAntiAlias(true); + paint.setColor(0xFF000000); + paint.setMaskFilter( + SkBlurMaskFilter::Create(SkBlurMaskFilter::kNormal_BlurStyle, + 0.78867501f, + SkBlurMaskFilter::kHighQuality_BlurFlag))->unref(); + paint.setColorFilter( + SkColorFilter::CreateModeFilter(0xBFFFFFFF, SkXfermode::kSrcIn_Mode))->unref(); + + canvas->clipPath(clipPath, SkRegion::kIntersect_Op, true); + canvas->drawPath(drawPath, paint); + } + +private: + + typedef GM INHERITED; +}; + +////////////////////////////////////////////////////////////////////////////// + +DEF_GM(return new SkBug1719GM;) + +} |