66 lines
1.9 KiB
C++
66 lines
1.9 KiB
C++
/*
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* Copyright 2015 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SkBlitter.h"
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#include "SkMask.h"
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#include "Test.h"
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class TestBlitter : public SkBlitter {
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public:
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TestBlitter(SkIRect bounds, skiatest::Reporter* reporter)
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: fBounds(bounds)
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, fReporter(reporter) { }
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void blitH(int x, int y, int width) override {
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REPORTER_ASSERT(fReporter, x >= fBounds.fLeft && x < fBounds.fRight);
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REPORTER_ASSERT(fReporter, y >= fBounds.fTop && y < fBounds.fBottom);
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int right = x + width;
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REPORTER_ASSERT(fReporter, right > fBounds.fLeft && right <= fBounds.fRight);
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}
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private:
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SkIRect fBounds;
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skiatest::Reporter* fReporter;
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};
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// Exercise all clips compared with different widths of bitMask. Make sure that no buffer
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// overruns happen.
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DEF_TEST(BlitAndClip, reporter) {
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const int originX = 100;
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const int originY = 100;
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for (int width = 1; width <= 32; width++) {
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const int height = 2;
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int rowBytes = (width + 7) >> 3;
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uint8_t* bits = new uint8_t[rowBytes * height];
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SkIRect b = {originX, originY, originX + width, originY + height};
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SkMask mask;
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mask.fFormat = SkMask::kBW_Format;
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mask.fBounds = b;
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mask.fImage = (uint8_t*)bits;
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mask.fRowBytes = rowBytes;
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TestBlitter tb(mask.fBounds, reporter);
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for (int top = b.fTop; top < b.fBottom; top++) {
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for (int bottom = top + 1; bottom <= b.fBottom; bottom++) {
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for (int left = b.fLeft; left < b.fRight; left++) {
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for (int right = left + 1; right <= b.fRight; right++) {
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SkIRect clipRect = {left, top, right, bottom};
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tb.blitMask(mask, clipRect);
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}
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}
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}
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}
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delete [] bits;
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}
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}
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