1 #include "SampleCode.h" 2 #include "SkCanvas.h" 3 #include "SkDevice.h" 4 5 namespace { 6 SkBitmap make_bitmap() { 7 SkBitmap bm; 8 bm.setConfig(SkBitmap::kARGB_8888_Config , 5, 5); 9 bm.allocPixels(); 10 11 for (int y = 0; y < bm.height(); y++) { 12 uint32_t* p = bm.getAddr32(0, y); 13 for (int x = 0; x < bm.width(); x++) { 14 p[x] = ((x + y) & 1) ? SK_ColorWHITE : SK_ColorBLACK; 15 } 16 } 17 bm.unlockPixels(); 18 return bm; 19 } 20 } // unnamed namespace 21 22 class TextureDomainView : public SampleView { 23 SkBitmap fBM; 24 25 public: 26 TextureDomainView(){ 27 fBM = make_bitmap(); 28 } 29 30 protected: 31 // overrides from SkEventSink 32 virtual bool onQuery(SkEvent* evt) { 33 if (SampleCode::TitleQ(*evt)) { 34 SampleCode::TitleR(evt, "Texture Domian"); 35 return true; 36 } 37 return this->INHERITED::onQuery(evt); 38 } 39 40 virtual void onDrawContent(SkCanvas* canvas) { 41 SkIRect srcRect; 42 SkRect dstRect; 43 SkPaint paint; 44 paint.setFilterBitmap(true); 45 46 // Test that bitmap draws from malloc-backed bitmaps respect 47 // the constrained texture domain. 48 srcRect.setXYWH(1, 1, 3, 3); 49 dstRect.setXYWH(5.0f, 5.0f, 305.0f, 305.0f); 50 canvas->drawBitmapRect(fBM, &srcRect, dstRect, &paint); 51 52 // Test that bitmap draws across separate devices also respect 53 // the constrainted texture domain. 54 // Note: GPU-backed bitmaps follow a different rendering path 55 // when copying from one GPU device to another. 56 SkRefPtr<SkDevice> primaryDevice(canvas->getDevice()); 57 SkRefPtr<SkDevice> secondDevice(canvas->createDevice( 58 SkBitmap::kARGB_8888_Config, 5, 5, true, true)); 59 secondDevice->unref(); 60 SkCanvas secondCanvas(secondDevice.get()); 61 62 srcRect.setXYWH(1, 1, 3, 3); 63 dstRect.setXYWH(1.0f, 1.0f, 3.0f, 3.0f); 64 secondCanvas.drawBitmapRect(fBM, &srcRect, dstRect, &paint); 65 66 SkBitmap deviceBitmap = secondDevice->accessBitmap(false); 67 68 srcRect.setXYWH(1, 1, 3, 3); 69 dstRect.setXYWH(405.0f, 5.0f, 305.0f, 305.0f); 70 canvas->drawBitmapRect(deviceBitmap, &srcRect, dstRect, &paint); 71 } 72 private: 73 typedef SkView INHERITED; 74 }; 75 76 ////////////////////////////////////////////////////////////////////////////// 77 78 static SkView* MyFactory() { return new TextureDomainView; } 79 static SkViewRegister reg(MyFactory); 80 81
