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 private: 28 SkIRect fBounds; 29 skiatest::Reporter* fReporter; 30 }; 31 32 // Exercise all clips compared with different widths of bitMask. Make sure that no buffer 33 // overruns happen. 34 DEF_TEST(BlitAndClip, reporter) { 35 const int originX = 100; 36 const int originY = 100; 37 for (int width = 1; width <= 32; width++) { 38 const int height = 2; 39 int rowBytes = (width + 7) >> 3; 40 uint8_t* bits = new uint8_t[rowBytes * height]; 41 memset(bits, 0xAA, rowBytes * height); 42 43 SkIRect b = {originX, originY, originX + width, originY + height}; 44 45 SkMask mask; 46 mask.fFormat = SkMask::kBW_Format; 47 mask.fBounds = b; 48 mask.fImage = (uint8_t*)bits; 49 mask.fRowBytes = rowBytes; 50 51 TestBlitter tb(mask.fBounds, reporter); 52 53 for (int top = b.fTop; top < b.fBottom; top++) { 54 for (int bottom = top + 1; bottom <= b.fBottom; bottom++) { 55 for (int left = b.fLeft; left < b.fRight; left++) { 56 for (int right = left + 1; right <= b.fRight; right++) { 57 SkIRect clipRect = {left, top, right, bottom}; 58 tb.blitMask(mask, clipRect); 59 } 60 } 61 } 62 } 63 64 delete [] bits; 65 } 66 } 67
