| |
| /* |
| * Copyright 2011 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| #include "Test.h" |
| #include "SkBitmap.h" |
| #include "SkCanvas.h" |
| #include "SkShader.h" |
| |
| static void assert_ifDrawnTo(skiatest::Reporter* reporter, |
| const SkBitmap& bm, bool shouldBeDrawn) { |
| for (int y = 0; y < bm.height(); ++y) { |
| for (int x = 0; x < bm.width(); ++x) { |
| if (shouldBeDrawn) { |
| if (0 == *bm.getAddr32(x, y)) { |
| REPORTER_ASSERT(reporter, false); |
| return; |
| } |
| } else { |
| // should not be drawn |
| if (*bm.getAddr32(x, y)) { |
| REPORTER_ASSERT(reporter, false); |
| return; |
| } |
| } |
| } |
| } |
| } |
| |
| static void test_wacky_bitmapshader(skiatest::Reporter* reporter, |
| int width, int height, bool shouldBeDrawn) { |
| SkBitmap dev; |
| dev.setConfig(SkBitmap::kARGB_8888_Config, 0x56F, 0x4f6); |
| dev.allocPixels(); |
| dev.eraseColor(SK_ColorTRANSPARENT); // necessary, so we know if we draw to it |
| |
| SkMatrix matrix; |
| |
| SkCanvas c(dev); |
| matrix.setAll(SkFloatToScalar(-119.34097f), |
| SkFloatToScalar(-43.436558f), |
| SkFloatToScalar(93489.945f), |
| SkFloatToScalar(43.436558f), |
| SkFloatToScalar(-119.34097f), |
| SkFloatToScalar(123.98426f), |
| 0, 0, SK_Scalar1); |
| c.concat(matrix); |
| |
| SkBitmap bm; |
| bm.setConfig(SkBitmap::kARGB_8888_Config, width, height); |
| bm.allocPixels(); |
| bm.eraseColor(SK_ColorRED); |
| |
| SkShader* s = SkShader::CreateBitmapShader(bm, SkShader::kRepeat_TileMode, |
| SkShader::kRepeat_TileMode); |
| matrix.setAll(SkFloatToScalar(0.0078740157f), |
| 0, |
| SkIntToScalar(249), |
| 0, |
| SkFloatToScalar(0.0078740157f), |
| SkIntToScalar(239), |
| 0, 0, SK_Scalar1); |
| s->setLocalMatrix(matrix); |
| |
| SkPaint paint; |
| paint.setShader(s)->unref(); |
| |
| SkRect r = SkRect::MakeXYWH(681, 239, 695, 253); |
| c.drawRect(r, paint); |
| |
| assert_ifDrawnTo(reporter, dev, shouldBeDrawn); |
| } |
| |
| /* |
| * Original bug was asserting that the matrix-proc had generated a (Y) value |
| * that was out of range. This led (in the release build) to the sampler-proc |
| * reading memory out-of-bounds of the original bitmap. |
| * |
| * We were numerically overflowing our 16bit coordinates that we communicate |
| * between these two procs. The fixes was in two parts: |
| * |
| * 1. Just don't draw bitmaps larger than 64K-1 in width or height, since we |
| * can't represent those coordinates in our transport format (yet). |
| * 2. Perform an unsigned shift during the calculation, so we don't get |
| * sign-extension bleed when packing the two values (X,Y) into our 32bit |
| * slot. |
| * |
| * This tests exercises the original setup, plus 3 more to ensure that we can, |
| * in fact, handle bitmaps at 64K-1 (assuming we don't exceed the total |
| * memory allocation limit). |
| */ |
| static void test_giantrepeat_crbug118018(skiatest::Reporter* reporter) { |
| #ifdef SK_SCALAR_IS_FLOAT |
| static const struct { |
| int fWidth; |
| int fHeight; |
| bool fExpectedToDraw; |
| } gTests[] = { |
| { 0x1b294, 0x7f, false }, // crbug 118018 (width exceeds 64K) |
| { 0xFFFF, 0x7f, true }, // should draw, test max width |
| { 0x7f, 0xFFFF, true }, // should draw, test max height |
| { 0xFFFF, 0xFFFF, false }, // allocation fails (too much RAM) |
| }; |
| |
| for (size_t i = 0; i < SK_ARRAY_COUNT(gTests); ++i) { |
| test_wacky_bitmapshader(reporter, |
| gTests[i].fWidth, gTests[i].fHeight, |
| gTests[i].fExpectedToDraw); |
| } |
| #endif |
| } |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| static void test_nan_antihair(skiatest::Reporter* reporter) { |
| SkBitmap bm; |
| bm.setConfig(SkBitmap::kARGB_8888_Config, 20, 20); |
| bm.allocPixels(); |
| |
| SkCanvas canvas(bm); |
| |
| SkPath path; |
| path.moveTo(0, 0); |
| path.lineTo(10, SK_ScalarNaN); |
| |
| SkPaint paint; |
| paint.setAntiAlias(true); |
| paint.setStyle(SkPaint::kStroke_Style); |
| |
| // before our fix to SkScan_Antihair.cpp to check for integral NaN (0x800...) |
| // this would trigger an assert/crash. |
| // |
| // see rev. 3558 |
| canvas.drawPath(path, paint); |
| } |
| |
| static bool check_for_all_zeros(const SkBitmap& bm) { |
| SkAutoLockPixels alp(bm); |
| |
| size_t count = bm.width() * bm.bytesPerPixel(); |
| for (int y = 0; y < bm.height(); y++) { |
| const uint8_t* ptr = reinterpret_cast<const uint8_t*>(bm.getAddr(0, y)); |
| for (size_t i = 0; i < count; i++) { |
| if (ptr[i]) { |
| return false; |
| } |
| } |
| } |
| return true; |
| } |
| |
| static const int gWidth = 256; |
| static const int gHeight = 256; |
| |
| static void create(SkBitmap* bm, SkBitmap::Config config, SkColor color) { |
| bm->setConfig(config, gWidth, gHeight); |
| bm->allocPixels(); |
| bm->eraseColor(color); |
| } |
| |
| static void TestDrawBitmapRect(skiatest::Reporter* reporter) { |
| SkBitmap src, dst; |
| |
| create(&src, SkBitmap::kARGB_8888_Config, 0xFFFFFFFF); |
| create(&dst, SkBitmap::kARGB_8888_Config, 0); |
| |
| SkCanvas canvas(dst); |
| |
| SkIRect srcR = { gWidth, 0, gWidth + 16, 16 }; |
| SkRect dstR = { 0, 0, SkIntToScalar(16), SkIntToScalar(16) }; |
| |
| canvas.drawBitmapRect(src, &srcR, dstR, NULL); |
| |
| // ensure that we draw nothing if srcR does not intersect the bitmap |
| REPORTER_ASSERT(reporter, check_for_all_zeros(dst)); |
| |
| test_nan_antihair(reporter); |
| test_giantrepeat_crbug118018(reporter); |
| } |
| |
| #include "TestClassDef.h" |
| DEFINE_TESTCLASS("DrawBitmapRect", TestDrawBitmapRectClass, TestDrawBitmapRect) |