path ops work in progress

tests/SkpSkGrTest.cpp

+#if !SK_SUPPORT_GPU
+#error "GPU support required"
+#endif
+
+#include "GrContext.h"
+#include "GrContextFactory.h"
+#include "GrRenderTarget.h"
+#include "SkGpuDevice.h"
+#include "gl/GrGLDefines.h"
+
+#include "SkBitmap.h"
+#include "SkColor.h"
+#include "SkDevice.h"
+#include "SkCanvas.h"
+#include "SkGraphics.h"
+#include "SkImageDecoder.h"
+#include "SkImageEncoder.h"
+#include "SkStream.h"
+#include "SkOSFile.h"
+#include "SkPicture.h"
+#include "SkRTConf.h"
+#include "SkRunnable.h"
+#include "SkString.h"
+#include "SkTArray.h"
+#include "SkTDArray.h"
+#include "SkThreadPool.h"
+#include "SkTime.h"
+#include "Test.h"
+
+#ifdef SK_BUILD_FOR_WIN
+    #define PATH_SLASH "\\"
+    #define IN_DIR "D:" PATH_SLASH "skp"
+    #define OUT_DIR "D:" PATH_SLASH
+#else
+    #define PATH_SLASH "/"
+    #define IN_DIR "/usr/local/google/home/caryclark" PATH_SLASH "9-30-13-skp"
+    #define OUT_DIR "/media/01CD75512A7F9EE0/4" PATH_SLASH
+#endif
+
+#define PATH_STR_SIZE 512
+
+/////////////////////////////////////////
+
+class SkpSkGrThreadedRunnable;
+
+enum TestStep {
+    kCompareBits,
+    kEncodeFiles,
+};
+
+enum {
+    kMaxLength = 128,
+    kMaxFiles = 128,
+};
+
+struct TestResult {
+    void init(int dirNo) {
+        fDirNo = dirNo;
+        sk_bzero(fFilename, sizeof(fFilename));
+        fTestStep = kCompareBits;
+        fScaleOversized = true;
+    }
+
+    SkString status() {
+        SkString outStr;
+        outStr.printf("%s %d %d\n", fFilename, fPixelError, fTime);
+        return outStr;
+    }
+
+    static void Test(int dirNo, const char* filename, TestStep testStep, bool verbose) {
+        TestResult test;
+        test.init(dirNo);
+        test.fTestStep = testStep;
+        strcpy(test.fFilename, filename);
+        test.testOne();
+        if (verbose) {
+            SkDebugf("%s", test.status().c_str());
+        }
+    }
+
+    void test(int dirNo, const SkString& filename) {
+        init(dirNo);
+        strcpy(fFilename, filename.c_str());
+        testOne();
+    }
+
+    void testOne();
+    
+    char fFilename[kMaxLength];
+    TestStep fTestStep;
+    int fDirNo;
+    int fPixelError;
+    int fTime;
+    bool fScaleOversized;
+};
+
+struct SkpSkGrThreadState {
+    void init(int dirNo) {
+        fResult.init(dirNo);
+        fFoundCount = 0;
+        fSmallestError = 0;
+        sk_bzero(fFilesFound, sizeof(fFilesFound));
+        sk_bzero(fDirsFound, sizeof(fDirsFound));
+        sk_bzero(fError, sizeof(fError));
+    }
+    
+    char fFilesFound[kMaxFiles][kMaxLength];
+    int fDirsFound[kMaxFiles];
+    int fError[kMaxFiles];
+    int fFoundCount;
+    int fSmallestError;
+    skiatest::Reporter* fReporter;
+    TestResult fResult;
+};
+
+struct SkpSkGrThreadedTestRunner {
+    SkpSkGrThreadedTestRunner(skiatest::Reporter* reporter, int threadCount)
+        : fNumThreads(threadCount)
+        , fReporter(reporter) {
+    }
+
+    ~SkpSkGrThreadedTestRunner();
+    void render();
+    int fNumThreads;
+    SkTDArray<SkpSkGrThreadedRunnable*> fRunnables;
+    skiatest::Reporter* fReporter;
+};
+
+class SkpSkGrThreadedRunnable : public SkRunnable {
+public:
+    SkpSkGrThreadedRunnable(void (*testFun)(SkpSkGrThreadState*), int dirNo, const char* str,
+            SkpSkGrThreadedTestRunner* runner) {
+        SkASSERT(strlen(str) < sizeof(fState.fResult.fFilename) - 1);
+        fState.init(dirNo);
+        strcpy(fState.fResult.fFilename, str);
+        fState.fReporter = runner->fReporter;
+        fTestFun = testFun;
+    }
+
+    virtual void run() SK_OVERRIDE {
+        SkGraphics::SetTLSFontCacheLimit(1 * 1024 * 1024);
+        (*fTestFun)(&fState);
+    }
+
+    SkpSkGrThreadState fState;
+    void (*fTestFun)(SkpSkGrThreadState*);
+};
+
+SkpSkGrThreadedTestRunner::~SkpSkGrThreadedTestRunner() {
+    for (int index = 0; index < fRunnables.count(); index++) {
+        SkDELETE(fRunnables[index]);
+    }
+}
+
+void SkpSkGrThreadedTestRunner::render() {
+    SkThreadPool pool(fNumThreads);
+    for (int index = 0; index < fRunnables.count(); ++ index) {
+        pool.add(fRunnables[index]);
+    }
+}
+
+////////////////////////////////////////////////
+
+static const char outGrDir[] = OUT_DIR "grTest";
+static const char outSkDir[] = OUT_DIR "skTest";
+static const char outSkpDir[] = OUT_DIR "skpTest";
+static const char outDiffDir[] = OUT_DIR "outTest";
+static const char outStatusDir[] = OUT_DIR "statusTest";
+
+static SkString make_filepath(int dirIndex, const char* dir, const char* name) {
+    SkString path(dir);
+    if (dirIndex) {
+        path.appendf("%d", dirIndex);
+    }
+    size_t len = strlen(dir);
+    if (len > 0 && dir[len - 1] != PATH_SLASH[0]) {
+        path.append(PATH_SLASH);
+    }
+    path.append(name);
+    return path;
+}
+
+static SkString make_in_dir_name(int dirIndex) {
+    SkString dirName(IN_DIR);
+    dirName.appendf("%d", dirIndex);
+    if (!sk_exists(dirName.c_str())) {
+        SkDebugf("could not read dir %s\n", dirName.c_str());
+        return SkString();
+    }
+    return dirName;
+}
+
+static bool make_out_dirs() {
+    SkString outDir = make_filepath(0, OUT_DIR, "");
+    if (!sk_exists(outDir.c_str())) {
+        if (!sk_mkdir(outDir.c_str())) {
+            SkDebugf("could not create dir %s\n", outDir.c_str());
+            return false;
+        }
+    }
+    SkString grDir = make_filepath(0, outGrDir, "");
+    if (!sk_exists(grDir.c_str())) {
+        if (!sk_mkdir(grDir.c_str())) {
+            SkDebugf("could not create dir %s\n", grDir.c_str());
+            return false;
+        }
+    }
+    SkString skDir = make_filepath(0, outSkDir, "");
+    if (!sk_exists(skDir.c_str())) {
+        if (!sk_mkdir(skDir.c_str())) {
+            SkDebugf("could not create dir %s\n", skDir.c_str());
+            return false;
+        }
+    }
+    SkString skpDir = make_filepath(0, outSkpDir, "");
+    if (!sk_exists(skpDir.c_str())) {
+        if (!sk_mkdir(skpDir.c_str())) {
+            SkDebugf("could not create dir %s\n", skpDir.c_str());
+            return false;
+        }
+    }
+    SkString diffDir = make_filepath(0, outDiffDir, "");
+    if (!sk_exists(diffDir.c_str())) {
+        if (!sk_mkdir(diffDir.c_str())) {
+            SkDebugf("could not create dir %s\n", diffDir.c_str());
+            return false;
+        }
+    }
+    SkString statusDir = make_filepath(0, outStatusDir, "");
+    if (!sk_exists(statusDir.c_str())) {
+        if (!sk_mkdir(statusDir.c_str())) {
+            SkDebugf("could not create dir %s\n", statusDir.c_str());
+            return false;
+        }
+    }
+    return true;
+}
+
+static SkString make_png_name(const char* filename) {
+    SkString pngName = SkString(filename);
+    pngName.remove(pngName.size() - 3, 3);
+    pngName.append("png");
+    return pngName;
+}
+
+typedef GrContextFactory::GLContextType GLContextType;
+static const GLContextType kNative = GrContextFactory::kNative_GLContextType;
+
+static int similarBits(const SkBitmap& gr, const SkBitmap& sk) {
+    const int kRowCount = 3;
+    const int kThreshold = 3;
+    int width = SkTMin(gr.width(), sk.width());
+    if (width < kRowCount) {
+        return true;
+    }
+    int height = SkTMin(gr.height(), sk.height());
+    if (height < kRowCount) {
+        return true;
+    }
+    int errorTotal = 0;
+    SkTArray<int, true> errorRows;
+    errorRows.push_back_n(width * kRowCount);
+    SkAutoLockPixels autoGr(gr);
+    SkAutoLockPixels autoSk(sk);
+    for (int y = 0; y < height; ++y) {
+        SkPMColor* grRow = gr.getAddr32(0, y);
+        SkPMColor* skRow = sk.getAddr32(0, y);
+        int* base = &errorRows[0];
+        int* cOut = &errorRows[y % kRowCount];
+        for (int x = 0; x < width; ++x) {
+            SkPMColor grColor = grRow[x];
+            SkPMColor skColor = skRow[x];
+            int dr = SkGetPackedR32(grColor) - SkGetPackedR32(skColor);
+            int dg = SkGetPackedG32(grColor) - SkGetPackedG32(skColor);
+            int db = SkGetPackedB32(grColor) - SkGetPackedB32(skColor);
+            int error = cOut[x] = SkTMax(SkAbs32(dr), SkTMax(SkAbs32(dg), SkAbs32(db)));
+            if (error < kThreshold || x < 2) {
+                continue;
+            }
+            if (base[x - 2] < kThreshold
+                    || base[width + x - 2] < kThreshold
+                    || base[width * 2 + x - 2] < kThreshold
+                    || base[x - 1] < kThreshold
+                    || base[width + x - 1] < kThreshold
+                    || base[width * 2 + x - 1] < kThreshold
+                    || base[x] < kThreshold
+                    || base[width + x] < kThreshold
+                    || base[width * 2 + x] < kThreshold) {
+                continue;
+            }
+            errorTotal += error;
+        }
+    }
+    return errorTotal;
+}
+
+static bool addError(SkpSkGrThreadState* data) {
+    bool foundSmaller = false;
+    int dCount = data->fFoundCount;
+    int pixelError = data->fResult.fPixelError;
+    if (data->fFoundCount < kMaxFiles) {
+        data->fError[dCount] = pixelError;
+        strcpy(data->fFilesFound[dCount], data->fResult.fFilename);
+        data->fDirsFound[dCount] = data->fResult.fDirNo;
+        ++data->fFoundCount;
+    } else if (pixelError > data->fSmallestError) {
+        int smallest = SK_MaxS32;
+        int smallestIndex = 0;
+        for (int index = 0; index < kMaxFiles; ++index) {
+            if (smallest > data->fError[index]) {
+                smallest = data->fError[index];
+                smallestIndex = index;
+            }
+        }
+        data->fError[smallestIndex] = pixelError;
+        strcpy(data->fFilesFound[smallestIndex], data->fResult.fFilename);
+        data->fDirsFound[smallestIndex] = data->fResult.fDirNo;
+        data->fSmallestError = SK_MaxS32;
+        for (int index = 0; index < kMaxFiles; ++index) {
+            if (data->fSmallestError > data->fError[index]) {
+                data->fSmallestError = data->fError[index];
+            }
+        }
+        SkDebugf("*%d*", data->fSmallestError);
+        foundSmaller = true;
+    }
+    return foundSmaller;
+}
+
+static SkMSec timePict(SkPicture* pic, SkCanvas* canvas) {
+    canvas->save();
+    int pWidth = pic->width();
+    int pHeight = pic->height();
+    const int maxDimension = 1000;
+    const int slices = 3;
+    int xInterval = SkTMax(pWidth - maxDimension, 0) / (slices - 1);
+    int yInterval = SkTMax(pHeight - maxDimension, 0) / (slices - 1);
+    SkRect rect = {0, 0, SkTMin(maxDimension, pWidth), SkTMin(maxDimension, pHeight)};
+    canvas->clipRect(rect);
+    SkMSec start = SkTime::GetMSecs();
+    for (int x = 0; x < slices; ++x) {
+        for (int y = 0; y < slices; ++y) {
+            pic->draw(canvas);
+            canvas->translate(0, yInterval);
+        }
+        canvas->translate(xInterval, -yInterval * slices);
+    }
+    SkMSec end = SkTime::GetMSecs();
+    canvas->restore();
+    return end - start;
+}
+
+static void drawPict(SkPicture* pic, SkCanvas* canvas, int scale) {
+    canvas->clear(SK_ColorWHITE);
+    if (scale != 1) {
+        canvas->save();
+        canvas->scale(1.0f / scale, 1.0f / scale);
+    }
+    pic->draw(canvas);
+    if (scale != 1) {
+        canvas->restore();
+    }
+}
+
+static void writePict(const SkBitmap& bitmap, const char* outDir, const char* pngName) {
+    SkString outFile = make_filepath(0, outDir, pngName);
+    if (!SkImageEncoder::EncodeFile(outFile.c_str(), bitmap,
+            SkImageEncoder::kPNG_Type, 100)) {
+        SkDebugf("unable to encode gr %s (width=%d height=%d)br \n", pngName,
+                    bitmap.width(), bitmap.height());
+    }
+}
+
+void TestResult::testOne() {
+    SkPicture* pic = NULL;
+    {
+        SkString d;
+        d.printf("    {%d, \"%s\"},", fDirNo, fFilename);
+        SkString path = make_filepath(fDirNo, IN_DIR, fFilename);
+        SkFILEStream stream(path.c_str());
+        if (!stream.isValid()) {
+            SkDebugf("invalid stream %s\n", path.c_str());
+            goto finish;
+        }
+        if (fTestStep == kEncodeFiles) {
+            size_t length = stream.getLength();
+            SkTArray<char, true> bytes;
+            bytes.push_back_n(length);
+            stream.read(&bytes[0], length);
+            stream.rewind();
+            SkString wPath = make_filepath(0, outSkpDir, fFilename);
+            SkFILEWStream wStream(wPath.c_str());
+            wStream.write(&bytes[0], length);
+            wStream.flush();
+        }
+        pic = SkPicture::CreateFromStream(&stream, &SkImageDecoder::DecodeMemory);
+        if (!pic) {
+            SkDebugf("unable to decode %s\n", fFilename);
+            goto finish;
+        }
+        int pWidth = pic->width();
+        int pHeight = pic->height();
+        int pLargerWH = SkTMax(pWidth, pHeight);
+        GrContextFactory contextFactory;
+        GrContext* context = contextFactory.get(kNative);
+        if (NULL == context) {
+            SkDebugf("unable to allocate context for %s\n", fFilename);
+            goto finish;
+        }
+        int maxWH = context->getMaxRenderTargetSize();
+        int scale = 1;
+        while (pLargerWH / scale > maxWH) {
+            scale *= 2;
+        }
+        SkBitmap bitmap;
+        SkIPoint dim;
+        do {
+            dim.fX = (pWidth + scale - 1) / scale;
+            dim.fY = (pHeight + scale - 1) / scale;
+            bitmap.setConfig(SkBitmap::kARGB_8888_Config, dim.fX, dim.fY);
+            bool success = bitmap.allocPixels();
+            if (success) {
+                break;
+            }
+            SkDebugf("-%d-", scale);
+        } while ((scale *= 2) < 256);
+        if (scale >= 256) {
+            SkDebugf("unable to allocate bitmap for %s (w=%d h=%d) (sw=%d sh=%d)\n",
+                    fFilename, pWidth, pHeight, dim.fX, dim.fY);
+            goto finish;
+        }
+        SkCanvas skCanvas(bitmap);
+        drawPict(pic, &skCanvas, fScaleOversized ? scale : 1);
+        GrTextureDesc desc;
+        desc.fConfig = kSkia8888_GrPixelConfig;
+        desc.fFlags = kRenderTarget_GrTextureFlagBit;
+        desc.fWidth = dim.fX;
+        desc.fHeight = dim.fY;
+        desc.fSampleCnt = 0;
+        SkAutoTUnref<GrTexture> texture(context->createUncachedTexture(desc, NULL, 0));
+        if (!texture) {
+            SkDebugf("unable to allocate texture for %s (w=%d h=%d)\n", fFilename,
+                dim.fX, dim.fY);
+            goto finish;
+        }
+        SkGpuDevice grDevice(context, texture.get());
+        SkCanvas grCanvas(&grDevice);
+        drawPict(pic, &grCanvas, fScaleOversized ? scale : 1);
+        const SkBitmap& grBitmap = grDevice.accessBitmap(false);
+        if (fTestStep == kCompareBits) {
+            fPixelError = similarBits(grBitmap, bitmap);
+            int skTime = timePict(pic, &skCanvas);
+            int grTime = timePict(pic, &grCanvas);
+            fTime = skTime - grTime;
+        } else if (fTestStep == kEncodeFiles) {
+            SkString pngStr = make_png_name(fFilename);
+            const char* pngName = pngStr.c_str();
+            writePict(grBitmap, outGrDir, pngName);
+            writePict(bitmap, outSkDir, pngName);
+        }
+    }
+finish:
+    SkDELETE(pic);
+}
+
+static const struct {
+    int directory;
+    const char* filename;
+} skipOverSkGr[] = {
+    {26, "http___speedvacanze_it_.skp"},  // Couldn't convert bitmap to texture.http___absoku072_com_
+};
+
+static const size_t skipOverSkGrCount = SK_ARRAY_COUNT(skipOverSkGr);
+
+static SkString makeStatusString(int dirNo) {
+    SkString statName;
+    statName.printf("stats%d.txt", dirNo);
+    SkString statusFile = make_filepath(0, outStatusDir, statName.c_str());
+    return statusFile;
+}
+
+class PreParser {
+public:
+    PreParser(int dirNo)
+        : fDirNo(dirNo)
+        , fIndex(0) {
+        SkString statusPath = makeStatusString(dirNo);
+        if (!sk_exists(statusPath.c_str())) {
+            return;
+        }
+        SkFILEStream reader;
+        reader.setPath(statusPath.c_str());
+        while (fetch(reader, &fResults.push_back()))
+            ;
+        fResults.pop_back();
+    }
+
+    bool fetch(SkFILEStream& reader, TestResult* result) {
+        char c;
+        int i = 0;
+        result->init(fDirNo);
+        result->fPixelError = 0;
+        result->fTime = 0;
+        do {
+            bool readOne = reader.read(&c, 1);
+            if (!readOne) {
+                SkASSERT(i == 0);
+                return false;
+            }
+            if (c == ' ') {
+                result->fFilename[i++] = '\0';
+                break;
+            }
+            result->fFilename[i++] = c;
+            SkASSERT(i < kMaxLength);
+        } while (true);
+        do {
+            SkAssertResult(reader.read(&c, 1));
+            if (c == ' ') {
+                break;
+            }
+            SkASSERT(c >= '0' && c <= '9');
+            result->fPixelError = result->fPixelError * 10 + (c - '0');
+        } while (true);
+        bool minus = false;
+        do {
+            SkAssertResult(reader.read(&c, 1));
+            if (c == '\n') {
+                break;
+            }
+            if (c == '-') {
+                minus = true;
+                continue;
+            }
+            SkASSERT(c >= '0' && c <= '9');
+            result->fTime = result->fTime * 10 + (c - '0');
+        } while (true);
+        if (minus) {
+            result->fTime = -result->fTime;
+        }
+        return true;
+    }
+
+    bool match(const SkString& filename, SkFILEWStream* stream, TestResult* result) {
+        if (fIndex < fResults.count()) {
+            *result = fResults[fIndex++];
+            SkASSERT(filename.equals(result->fFilename));
+            SkString outStr(result->status());
+            stream->write(outStr.c_str(), outStr.size());
+            return true;
+        }
+        return false;
+    }
+
+private:
+    int fDirNo;
+    int fIndex;
+    SkTArray<TestResult, true> fResults;
+};
+
+static void SkpSkGrTest(skiatest::Reporter* reporter) {
+    SkTArray<TestResult, true> errors;
+    SK_CONF_SET("images.jpeg.suppressDecoderWarnings", true);
+    SK_CONF_SET("images.png.suppressDecoderWarnings", true);
+    SkpSkGrThreadState state;
+    state.init(0);
+    int smallCount = 0;
+    if (!make_out_dirs()) {
+        return;
+    }
+    for (int dirNo = 1; dirNo <= 100; ++dirNo) {
+        SkString pictDir = make_in_dir_name(dirNo);
+        SkASSERT(pictDir.size());
+        if (reporter->verbose()) {
+            SkDebugf("dirNo=%d\n", dirNo);
+        }
+        SkOSFile::Iter iter(pictDir.c_str(), "skp");
+        SkString filename;
+        int testCount = 0;
+        PreParser preParser(dirNo);
+        SkFILEWStream statusStream(makeStatusString(dirNo).c_str());
+        while (iter.next(&filename)) {
+            for (size_t index = 0; index < skipOverSkGrCount; ++index) {
+                if (skipOverSkGr[index].directory == dirNo
+                        && strcmp(filename.c_str(), skipOverSkGr[index].filename) == 0) {
+                    goto skipOver;
+                }
+            }
+            if (preParser.match(filename, &statusStream, &state.fResult)) {
+                addError(&state);
+                ++testCount;
+                goto checkEarlyExit;
+            }
+            if (state.fSmallestError > 5000000) {
+                goto breakOut;
+            }
+            {
+                TestResult& result = state.fResult;
+                result.test(dirNo, filename);
+                SkString outStr(result.status());
+                statusStream.write(outStr.c_str(), outStr.size());
+                if (1) {
+                    SkDebugf("%s", outStr.c_str());
+                }
+                bool noMatch = addError(&state);
+                if (noMatch) {
+                    smallCount = 0;
+                } else if (++smallCount > 10000) {
+                    goto breakOut;
+                }
+            }
+            ++testCount;
+            if (reporter->verbose()) {
+                SkDebugf(".");
+                if (testCount % 100 == 0) {
+                    SkDebugf("%d\n", testCount);
+                }
+            }
+    skipOver:
+            reporter->bumpTestCount();
+    checkEarlyExit:
+            if (1 && testCount == 200) {
+                break;
+            }
+        }
+    }
+breakOut:
+    if (reporter->verbose()) {
+        for (int index = 0; index < state.fFoundCount; ++index) {
+            SkDebugf("%d %s %d\n", state.fDirsFound[index], state.fFilesFound[index],
+                     state.fError[index]);
+        }
+    }
+    for (int index = 0; index < state.fFoundCount; ++index) {
+        TestResult::Test(state.fDirsFound[index], state.fFilesFound[index], kEncodeFiles,
+                reporter->verbose());
+        if (reporter->verbose()) SkDebugf("+");
+    }
+}
+
+static void bumpCount(skiatest::Reporter* reporter, bool skipping) {
+    if (reporter->verbose()) {
+        static int threadTestCount;
+        if (!skipping) {
+            SkDebugf(".");
+        }
+        sk_atomic_inc(&threadTestCount);
+        if (!skipping && threadTestCount % 100 == 0) {
+            SkDebugf("%d\n", threadTestCount);
+        }
+        if (skipping && threadTestCount % 10000 == 0) {
+            SkDebugf("%d\n", threadTestCount);
+        }
+    }
+}
+
+static void testSkGrMain(SkpSkGrThreadState* data) {
+    data->fResult.testOne();
+    bumpCount(data->fReporter, false);
+    data->fReporter->bumpTestCount();
+}
+
+static void SkpSkGrThreadedTest(skiatest::Reporter* reporter) {
+    SK_CONF_SET("images.jpeg.suppressDecoderWarnings", true);
+    SK_CONF_SET("images.png.suppressDecoderWarnings", true);
+    int threadCount = reporter->allowThreaded() ? 3 : 1;
+    SkpSkGrThreadedTestRunner testRunner(reporter, threadCount);
+    if (!make_out_dirs()) {
+        return;
+    }
+    for (int dirIndex = 1; dirIndex <= 100; ++dirIndex) {
+        SkString pictDir = make_in_dir_name(dirIndex);
+        if (pictDir.size() == 0) {
+            continue;
+        }
+        SkOSFile::Iter iter(pictDir.c_str(), "skp");
+        SkString filename;
+        while (iter.next(&filename)) {
+            SkString pngName = make_png_name(filename.c_str());
+            SkString oldPng = make_filepath(dirIndex, outSkDir, pngName.c_str());
+            SkString newPng = make_filepath(dirIndex, outGrDir, pngName.c_str());
+            if (sk_exists(oldPng.c_str()) && sk_exists(newPng.c_str())) {
+                bumpCount(reporter, true);
+                continue;
+            }
+            for (size_t index = 0; index < skipOverSkGrCount; ++index) {
+                if (skipOverSkGr[index].directory == dirIndex
+                        && strcmp(filename.c_str(), skipOverSkGr[index].filename) == 0) {
+                    bumpCount(reporter, true);
+                    goto skipOver;
+                }
+            }
+            *testRunner.fRunnables.append() = SkNEW_ARGS(SkpSkGrThreadedRunnable,
+                    (&testSkGrMain, dirIndex, filename.c_str(), &testRunner));
+    skipOver:
+            ;
+        }
+    }
+    testRunner.render();
+    SkpSkGrThreadState& max = testRunner.fRunnables[0]->fState;
+    for (int dirIndex = 2; dirIndex <= 100; ++dirIndex) {
+        SkpSkGrThreadState& state = testRunner.fRunnables[dirIndex - 1]->fState;
+        for (int index = 0; index < state.fFoundCount; ++index) {
+            int maxIdx = max.fFoundCount;
+            if (maxIdx < kMaxFiles) {
+                max.fError[maxIdx] = state.fError[index];
+                strcpy(max.fFilesFound[maxIdx], state.fFilesFound[index]);
+                max.fDirsFound[maxIdx] = state.fDirsFound[index];
+                ++max.fFoundCount;
+                continue;
+            }
+            for (maxIdx = 0; maxIdx < max.fFoundCount; ++maxIdx) {
+                if (max.fError[maxIdx] < state.fError[index]) {
+                    max.fError[maxIdx] = state.fError[index];
+                    strcpy(max.fFilesFound[maxIdx], state.fFilesFound[index]);
+                    max.fDirsFound[maxIdx] = state.fDirsFound[index];
+                    break;
+                }
+            }
+        }
+    }
+    TestResult encoder;
+    encoder.fTestStep = kEncodeFiles;
+    for (int index = 0; index < max.fFoundCount; ++index) {
+        encoder.fDirNo = max.fDirsFound[index];
+        strcpy(encoder.fFilename, max.fFilesFound[index]);
+        encoder.testOne();
+        SkDebugf("+");
+    }
+}
+
+static void SkpSkGrOneOffTest(skiatest::Reporter* reporter) {
+    SK_CONF_SET("images.jpeg.suppressDecoderWarnings", true);
+    SK_CONF_SET("images.png.suppressDecoderWarnings", true);
+    int testIndex = 166;
+    int dirIndex = skipOverSkGr[testIndex - 166].directory;
+    if (!make_out_dirs()) {
+        return;
+    }
+    SkString pictDir = make_in_dir_name(dirIndex);
+    if (pictDir.size() == 0) {
+        return;
+    }
+    SkString filename(skipOverSkGr[testIndex - 166].filename);
+    TestResult::Test(dirIndex, filename.c_str(), kCompareBits, reporter->verbose());
+    TestResult::Test(dirIndex, filename.c_str(), kEncodeFiles, reporter->verbose());
+}
+
+#include "TestClassDef.h"
+DEFINE_TESTCLASS_SHORT(SkpSkGrTest)
+
+DEFINE_TESTCLASS_SHORT(SkpSkGrOneOffTest)
+
+DEFINE_TESTCLASS_SHORT(SkpSkGrThreadedTest)