123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174 |
- /*
- * Copyright 2014 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
- #include "tests/Test.h"
- #include "include/core/SkBitmap.h"
- #include "include/core/SkCanvas.h"
- #include "include/core/SkPicture.h"
- #include "include/core/SkPictureRecorder.h"
- #include "include/core/SkStream.h"
- #include "include/core/SkString.h"
- #include "src/core/SkBlendModePriv.h"
- #include <cstring>
- // Verify that replay of a recording into a clipped canvas
- // produces the correct bitmap.
- // This arose from http://crbug.com/401593 which has
- // https://code.google.com/p/skia/issues/detail?id=1291 as its root cause.
- namespace {
- class Drawer {
- public:
- explicit Drawer() : fImageInfo(SkImageInfo::MakeN32Premul(200, 100)) {
- fCircleBM.allocPixels(SkImageInfo::MakeN32Premul(100, 100));
- SkCanvas canvas(fCircleBM);
- canvas.clear(0xffffffff);
- SkPaint circlePaint;
- circlePaint.setColor(0xff000000);
- canvas.drawCircle(50, 50, 50, circlePaint);
- }
- const SkImageInfo& imageInfo() const { return fImageInfo; }
- void draw(SkCanvas* canvas, const SkRect& clipRect, SkBlendMode mode) const {
- SkPaint greenPaint;
- greenPaint.setColor(0xff008000);
- SkPaint blackPaint;
- blackPaint.setColor(0xff000000);
- SkPaint whitePaint;
- whitePaint.setColor(0xffffffff);
- SkPaint layerPaint;
- layerPaint.setColor(0xff000000);
- layerPaint.setBlendMode(mode);
- SkRect canvasRect(SkRect::MakeWH(SkIntToScalar(fImageInfo.width()),
- SkIntToScalar(fImageInfo.height())));
- canvas->clipRect(clipRect);
- canvas->clear(0xff000000);
- canvas->saveLayer(nullptr, &blackPaint);
- canvas->drawRect(canvasRect, greenPaint);
- canvas->saveLayer(nullptr, &layerPaint);
- canvas->drawBitmapRect(fCircleBM, SkRect::MakeXYWH(20,20,60,60), &blackPaint);
- canvas->restore();
- canvas->restore();
- }
- private:
- const SkImageInfo fImageInfo;
- SkBitmap fCircleBM;
- };
- class RecordingStrategy {
- public:
- virtual ~RecordingStrategy() {}
- virtual const SkBitmap& recordAndReplay(const Drawer& drawer,
- const SkRect& intoClip,
- SkBlendMode) = 0;
- };
- class BitmapBackedCanvasStrategy : public RecordingStrategy {
- // This version just draws into a bitmap-backed canvas.
- public:
- BitmapBackedCanvasStrategy(const SkImageInfo& imageInfo) {
- fBitmap.allocPixels(imageInfo);
- }
- const SkBitmap& recordAndReplay(const Drawer& drawer, const SkRect& intoClip,
- SkBlendMode mode) override {
- SkCanvas canvas(fBitmap);
- canvas.clear(0xffffffff);
- // Note that the scene is drawn just into the clipped region!
- canvas.clipRect(intoClip);
- drawer.draw(&canvas, intoClip, mode); // Shouild be canvas-wide...
- return fBitmap;
- }
- private:
- SkBitmap fBitmap;
- };
- class PictureStrategy : public RecordingStrategy {
- // This version draws the entire scene into an SkPictureRecorder.
- // Then it then replays the scene through a clip rectangle.
- // This backend proved to be buggy.
- public:
- PictureStrategy(const SkImageInfo& imageInfo) {
- fBitmap.allocPixels(imageInfo);
- fWidth = imageInfo.width();
- fHeight = imageInfo.height();
- }
- const SkBitmap& recordAndReplay(const Drawer& drawer, const SkRect& intoClip,
- SkBlendMode mode) override {
- SkRTreeFactory factory;
- SkPictureRecorder recorder;
- SkRect canvasRect(SkRect::MakeWH(SkIntToScalar(fWidth),SkIntToScalar(fHeight)));
- SkCanvas* canvas = recorder.beginRecording(SkIntToScalar(fWidth),
- SkIntToScalar(fHeight),
- &factory);
- drawer.draw(canvas, canvasRect, mode);
- sk_sp<SkPicture> picture(recorder.finishRecordingAsPicture());
- SkCanvas replayCanvas(fBitmap);
- replayCanvas.clear(0xffffffff);
- replayCanvas.clipRect(intoClip);
- picture->playback(&replayCanvas);
- return fBitmap;
- }
- private:
- SkBitmap fBitmap;
- int fWidth;
- int fHeight;
- };
- } // namespace
- DEF_TEST(SkRecordingAccuracyXfermode, reporter) {
- #define FINEGRAIN 0
- const Drawer drawer;
- BitmapBackedCanvasStrategy golden(drawer.imageInfo());
- PictureStrategy picture(drawer.imageInfo());
- #if !FINEGRAIN
- unsigned numErrors = 0;
- SkString errors;
- #endif
- for (int iMode = 0; iMode < int(SkBlendMode::kLastMode); iMode++) {
- const SkRect& clip = SkRect::MakeXYWH(100, 0, 100, 100);
- SkBlendMode mode = SkBlendMode(iMode);
- const SkBitmap& goldenBM = golden.recordAndReplay(drawer, clip, mode);
- const SkBitmap& pictureBM = picture.recordAndReplay(drawer, clip, mode);
- size_t pixelsSize = goldenBM.computeByteSize();
- REPORTER_ASSERT(reporter, pixelsSize == pictureBM.computeByteSize());
- // The pixel arrays should match.
- #if FINEGRAIN
- REPORTER_ASSERT(reporter,
- 0 == memcmp(goldenBM.getPixels(), pictureBM.getPixels(), pixelsSize));
- #else
- if (memcmp(goldenBM.getPixels(), pictureBM.getPixels(), pixelsSize)) {
- numErrors++;
- errors.appendf("For SkXfermode %d %s: SkPictureRecorder bitmap is wrong\n",
- iMode, SkBlendMode_Name(mode));
- }
- #endif
- }
- #if !FINEGRAIN
- REPORTER_ASSERT(reporter, 0 == numErrors, errors.c_str());
- #endif
- }
|