1 /* 2 * Copyright 2015 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 "SkBlitter.h" 9 #include "SkMask.h" 10 #include "Test.h" 11 #include <string.h> 12 13 class TestBlitter : public SkBlitter { 14 public: 15 TestBlitter(SkIRect bounds, skiatest::Reporter* reporter) 16 : fBounds(bounds) 17 , fReporter(reporter) { } 18 19 void blitH(int x, int y, int width) override { 20 21 REPORTER_ASSERT(fReporter, x >= fBounds.fLeft && x < fBounds.fRight); 22 REPORTER_ASSERT(fReporter, y >= fBounds.fTop && y < fBounds.fBottom); 23 int right = x + width; 24 REPORTER_ASSERT(fReporter, right > fBounds.fLeft && right <= fBounds.fRight); 25 } 26 27 void blitAntiH(int x, int y, const SkAlpha antialias[], const int16_t runs[]) override { 28 SkDEBUGFAIL("blitAntiH not implemented"); 29 } 30 31 private: 32 SkIRect fBounds; 33 skiatest::Reporter* fReporter; 34 }; 35 36 // Exercise all clips compared with different widths of bitMask. Make sure that no buffer 37 // overruns happen. 38 DEF_TEST(BlitAndClip, reporter) { 39 const int originX = 100; 40 const int originY = 100; 41 for (int width = 1; width <= 32; width++) { 42 const int height = 2; 43 int rowBytes = (width + 7) >> 3; 44 uint8_t* bits = new uint8_t[rowBytes * height]; 45 memset(bits, 0xAA, rowBytes * height); 46 47 SkIRect b = {originX, originY, originX + width, originY + height}; 48 49 SkMask mask; 50 mask.fFormat = SkMask::kBW_Format; 51 mask.fBounds = b; 52 mask.fImage = (uint8_t*)bits; 53 mask.fRowBytes = rowBytes; 54 55 TestBlitter tb(mask.fBounds, reporter); 56 57 for (int top = b.fTop; top < b.fBottom; top++) { 58 for (int bottom = top + 1; bottom <= b.fBottom; bottom++) { 59 for (int left = b.fLeft; left < b.fRight; left++) { 60 for (int right = left + 1; right <= b.fRight; right++) { 61 SkIRect clipRect = {left, top, right, bottom}; 62 tb.blitMask(mask, clipRect); 63 } 64 } 65 } 66 } 67 68 delete [] bits; 69 } 70 } 71
