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/*
* 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 "SkCanvas.h"
#include "SkPicture.h"
#include "SkPictureRecorder.h"
#include "SkPictureShader.h"
#include "SkShader.h"
#include "SkSurface.h"
#include "Test.h"
// Test that attempting to create a picture shader with a nullptr picture or
// empty picture returns a shader that draws nothing.
DEF_TEST(PictureShader_empty, reporter) {
SkPaint paint;
SkBitmap bitmap;
bitmap.allocN32Pixels(1,1);
SkCanvas canvas(bitmap);
canvas.clear(SK_ColorGREEN);
paint.setShader(SkShader::MakePictureShader(
nullptr, SkShader::kClamp_TileMode, SkShader::kClamp_TileMode, nullptr, nullptr));
canvas.drawRect(SkRect::MakeWH(1,1), paint);
REPORTER_ASSERT(reporter, *bitmap.getAddr32(0,0) == SK_ColorGREEN);
SkPictureRecorder factory;
factory.beginRecording(0, 0, nullptr, 0);
paint.setShader(SkShader::MakePictureShader(factory.finishRecordingAsPicture(),
SkShader::kClamp_TileMode,
SkShader::kClamp_TileMode, nullptr, nullptr));
canvas.drawRect(SkRect::MakeWH(1,1), paint);
REPORTER_ASSERT(reporter, *bitmap.getAddr32(0,0) == SK_ColorGREEN);
}
// Test that the SkPictureShader cache is purged on shader deletion.
DEF_TEST(PictureShader_caching, reporter) {
auto makePicture = [] () {
SkPictureRecorder recorder;
recorder.beginRecording(100, 100)->drawColor(SK_ColorGREEN);
return recorder.finishRecordingAsPicture();
};
sk_sp<SkPicture> picture = makePicture();
REPORTER_ASSERT(reporter, picture->unique());
sk_sp<SkSurface> surface = SkSurface::MakeRasterN32Premul(100, 100);
{
SkPaint paint;
paint.setShader(SkPictureShader::Make(picture,
SkShader::kRepeat_TileMode,
SkShader::kRepeat_TileMode, nullptr, nullptr));
surface->getCanvas()->drawPaint(paint);
// We should have about 3 refs by now: local + shader + shader cache.
REPORTER_ASSERT(reporter, !picture->unique());
}
// Draw another picture shader to have a chance to purge.
{
SkPaint paint;
paint.setShader(SkPictureShader::Make(makePicture(),
SkShader::kRepeat_TileMode,
SkShader::kRepeat_TileMode, nullptr, nullptr));
surface->getCanvas()->drawPaint(paint);
}
// All but the local ref should be gone now.
REPORTER_ASSERT(reporter, picture->unique());
}
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