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.h" 9 10 #if SK_SUPPORT_GPU 11 12 #include "SkCanvas.h" 13 #include "SkSurface.h" 14 #include "SkTextBlob.h" 15 #include "GrContext.h" 16 17 // This tests that we correctly regenerate textblobs after freeing all gpu resources crbug/491350 18 namespace skiagm { 19 class TextBlobUseAfterGpuFree : public GM { 20 public: 21 TextBlobUseAfterGpuFree() { } 22 23 protected: 24 SkString onShortName() override { 25 return SkString("textblobuseaftergpufree"); 26 } 27 28 SkISize onISize() override { 29 return SkISize::Make(kWidth, kHeight); 30 } 31 32 void onDraw(SkCanvas* canvas) override { 33 // This GM exists to test a specific feature of the GPU backend. 34 if (nullptr == canvas->getGrContext()) { 35 skiagm::GM::DrawGpuOnlyMessage(canvas); 36 return; 37 } 38 39 const char text[] = "Hamburgefons"; 40 41 SkPaint paint; 42 sk_tool_utils::set_portable_typeface(&paint); 43 paint.setAntiAlias(true); 44 paint.setTextSize(20); 45 46 SkTextBlobBuilder builder; 47 48 sk_tool_utils::add_to_text_blob(&builder, text, paint, 10, 10); 49 50 SkAutoTUnref<const SkTextBlob> blob(builder.build()); 51 52 // draw textblob 53 SkRect rect = SkRect::MakeLTRB(0.f, 0.f, SkIntToScalar(kWidth), kHeight / 2.f); 54 SkPaint rectPaint; 55 rectPaint.setColor(0xffffffff); 56 canvas->drawRect(rect, rectPaint); 57 canvas->drawTextBlob(blob.get(), 10, 50, paint); 58 59 // This text should look fine 60 canvas->getGrContext()->freeGpuResources(); 61 canvas->drawTextBlob(blob.get(), 10, 150, paint); 62 } 63 64 private: 65 static const int kWidth = 200; 66 static const int kHeight = 200; 67 68 typedef GM INHERITED; 69 }; 70 71 ////////////////////////////////////////////////////////////////////////////// 72 73 DEF_GM(return new TextBlobUseAfterGpuFree;) 74 } 75 #endif 76
