1 /* 2 * Copyright 2013 Google Inc. 3 * 4 * Use of this source code is governed by a BSD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "gm.h" 9 #include "SkBlurMaskFilter.h" 10 #include "SkColorFilter.h" 11 #include "SkPath.h" 12 13 /** 14 * This test exercises bug 1719. An anti-aliased blurred path is rendered through a soft clip. On 15 * the GPU a scratch texture was used to hold the original path mask as well as the blurred path 16 * result. The same texture is then incorrectly used to generate the soft clip mask for the draw. 17 * Thus the same texture is used for both the blur mask and soft mask in a single draw. 18 * 19 * The correct image should look like a thin stroked round rect. 20 */ 21 DEF_SIMPLE_GM_BG(skbug1719, canvas, 300, 100, 22 sk_tool_utils::color_to_565(0xFF303030)) { 23 canvas->translate(SkIntToScalar(-800), SkIntToScalar(-650)); 24 25 // The data is lifted from an SKP that exhibited the bug. 26 27 // This is a round rect. 28 SkPath clipPath; 29 clipPath.moveTo(832.f, 654.f); 30 clipPath.lineTo(1034.f, 654.f); 31 clipPath.cubicTo(1038.4183f, 654.f, 1042.f, 657.58173f, 1042.f, 662.f); 32 clipPath.lineTo(1042.f, 724.f); 33 clipPath.cubicTo(1042.f, 728.41827f, 1038.4183f, 732.f, 1034.f, 732.f); 34 clipPath.lineTo(832.f, 732.f); 35 clipPath.cubicTo(827.58173f, 732.f, 824.f, 728.41827f, 824.f, 724.f); 36 clipPath.lineTo(824.f, 662.f); 37 clipPath.cubicTo(824.f, 657.58173f, 827.58173f, 654.f, 832.f, 654.f); 38 clipPath.close(); 39 40 // This is a round rect nested inside a rect. 41 SkPath drawPath; 42 drawPath.moveTo(823.f, 653.f); 43 drawPath.lineTo(1043.f, 653.f); 44 drawPath.lineTo(1043.f, 733.f); 45 drawPath.lineTo(823.f, 733.f); 46 drawPath.lineTo(823.f, 653.f); 47 drawPath.close(); 48 drawPath.moveTo(832.f, 654.f); 49 drawPath.lineTo(1034.f, 654.f); 50 drawPath.cubicTo(1038.4183f, 654.f, 1042.f, 657.58173f, 1042.f, 662.f); 51 drawPath.lineTo(1042.f, 724.f); 52 drawPath.cubicTo(1042.f, 728.41827f, 1038.4183f, 732.f, 1034.f, 732.f); 53 drawPath.lineTo(832.f, 732.f); 54 drawPath.cubicTo(827.58173f, 732.f, 824.f, 728.41827f, 824.f, 724.f); 55 drawPath.lineTo(824.f, 662.f); 56 drawPath.cubicTo(824.f, 657.58173f, 827.58173f, 654.f, 832.f, 654.f); 57 drawPath.close(); 58 drawPath.setFillType(SkPath::kEvenOdd_FillType); 59 60 SkPaint paint; 61 paint.setAntiAlias(true); 62 paint.setColor(0xFF000000); 63 paint.setMaskFilter( 64 SkBlurMaskFilter::Create(kNormal_SkBlurStyle, 65 0.78867501f, 66 SkBlurMaskFilter::kHighQuality_BlurFlag))->unref(); 67 paint.setColorFilter( 68 SkColorFilter::CreateModeFilter(0xBFFFFFFF, SkXfermode::kSrcIn_Mode))->unref(); 69 70 canvas->clipPath(clipPath, SkRegion::kIntersect_Op, true); 71 canvas->drawPath(drawPath, paint); 72 } 73
