1 /* 2 * Copyright 2015 Google Inc. 3 * 4 * Use of this source code is governed by a BD-style license that can be 5 * found in the LICENSE file. 6 */ 7 8 #include "gm/gm.h" 9 #include "include/core/SkCanvas.h" 10 #include "include/core/SkFont.h" 11 #include "include/core/SkImageInfo.h" 12 #include "include/core/SkPaint.h" 13 #include "include/core/SkRect.h" 14 #include "include/core/SkRefCnt.h" 15 #include "include/core/SkScalar.h" 16 #include "include/core/SkSize.h" 17 #include "include/core/SkString.h" 18 #include "include/core/SkSurface.h" 19 #include "include/core/SkSurfaceProps.h" 20 #include "include/core/SkTextBlob.h" 21 #include "include/core/SkTypeface.h" 22 #include "tools/ToolUtils.h" 23 24 // This tests that we don't try to reuse textblobs from the GPU textblob cache across pixel geometry 25 // changes when we have LCD. crbug/486744 26 namespace skiagm { 27 class TextBlobGeometryChange : public GM { 28 public: TextBlobGeometryChange()29 TextBlobGeometryChange() { } 30 31 protected: onShortName()32 SkString onShortName() override { 33 return SkString("textblobgeometrychange"); 34 } 35 onISize()36 SkISize onISize() override { 37 return SkISize::Make(kWidth, kHeight); 38 } 39 onDraw(SkCanvas * canvas)40 void onDraw(SkCanvas* canvas) override { 41 const char text[] = "Hamburgefons"; 42 43 SkFont font(ToolUtils::create_portable_typeface(), 20); 44 font.setEdging(SkFont::Edging::kSubpixelAntiAlias); 45 46 SkTextBlobBuilder builder; 47 48 ToolUtils::add_to_text_blob(&builder, text, font, 10, 10); 49 50 sk_sp<SkTextBlob> blob(builder.make()); 51 52 SkImageInfo info = SkImageInfo::MakeN32Premul(200, 200); 53 SkSurfaceProps props(0, kUnknown_SkPixelGeometry); 54 auto surface = ToolUtils::makeSurface(canvas, info, &props); 55 SkCanvas* c = surface->getCanvas(); 56 57 // LCD text on white background 58 SkRect rect = SkRect::MakeLTRB(0.f, 0.f, SkIntToScalar(kWidth), kHeight / 2.f); 59 SkPaint rectPaint; 60 rectPaint.setColor(0xffffffff); 61 canvas->drawRect(rect, rectPaint); 62 canvas->drawTextBlob(blob, 10, 50, SkPaint()); 63 64 // This should not look garbled since we should disable LCD text in this case 65 // (i.e., unknown pixel geometry) 66 c->clear(0x00ffffff); 67 c->drawTextBlob(blob, 10, 150, SkPaint()); 68 surface->draw(canvas, 0, 0); 69 } 70 71 private: 72 inline static constexpr int kWidth = 200; 73 inline static constexpr int kHeight = 200; 74 75 using INHERITED = GM; 76 }; 77 78 ////////////////////////////////////////////////////////////////////////////// 79 80 DEF_GM(return new TextBlobGeometryChange;) 81 } // namespace skiagm 82