e0e7cfe44b
The goal here is to get people to start using the new random number generator, while leaving the old one in place so we don't have to rebaseline GMs. R=reed@google.com, bsalomon@google.com Author: jvanverth@google.com Review URL: https://chromiumcodereview.appspot.com/23576015 git-svn-id: http://skia.googlecode.com/svn/trunk@11169 2bbb7eff-a529-9590-31e7-b0007b416f81
60 lines
1.9 KiB
C++
60 lines
1.9 KiB
C++
/*
|
|
* Copyright 2013 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 "SkMipMap.h"
|
|
#include "SkBitmap.h"
|
|
#include "SkRandom.h"
|
|
|
|
static void make_bitmap(SkBitmap* bm, SkRandom& rand) {
|
|
// for now, Build needs a min size of 2, otherwise it will return NULL.
|
|
// should fix that to support 1 X N, where N > 1 to return non-null.
|
|
int w = 2 + rand.nextU() % 1000;
|
|
int h = 2 + rand.nextU() % 1000;
|
|
bm->setConfig(SkBitmap::kARGB_8888_Config, w, h);
|
|
bm->allocPixels();
|
|
bm->eraseColor(SK_ColorWHITE);
|
|
}
|
|
|
|
static void TestMipMap(skiatest::Reporter* reporter) {
|
|
SkBitmap bm;
|
|
SkRandom rand;
|
|
|
|
for (int i = 0; i < 500; ++i) {
|
|
make_bitmap(&bm, rand);
|
|
SkAutoTUnref<SkMipMap> mm(SkMipMap::Build(bm));
|
|
|
|
REPORTER_ASSERT(reporter, !mm->extractLevel(SK_Scalar1, NULL));
|
|
REPORTER_ASSERT(reporter, !mm->extractLevel(SK_Scalar1 * 2, NULL));
|
|
|
|
SkMipMap::Level prevLevel;
|
|
sk_bzero(&prevLevel, sizeof(prevLevel));
|
|
|
|
SkScalar scale = SK_Scalar1;
|
|
for (int j = 0; j < 30; ++j) {
|
|
scale = scale * 2 / 3;
|
|
|
|
SkMipMap::Level level;
|
|
if (mm->extractLevel(scale, &level)) {
|
|
REPORTER_ASSERT(reporter, level.fPixels);
|
|
REPORTER_ASSERT(reporter, level.fWidth > 0);
|
|
REPORTER_ASSERT(reporter, level.fHeight > 0);
|
|
REPORTER_ASSERT(reporter, level.fRowBytes >= level.fWidth * 4);
|
|
|
|
if (prevLevel.fPixels) {
|
|
REPORTER_ASSERT(reporter, level.fWidth <= prevLevel.fWidth);
|
|
REPORTER_ASSERT(reporter, level.fHeight <= prevLevel.fHeight);
|
|
}
|
|
prevLevel = level;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
#include "TestClassDef.h"
|
|
DEFINE_TESTCLASS("MipMap", MipMapTestClass, TestMipMap)
|