TextBlobCacheTest.cpp File Reference

#include "include/core/SkAlphaType.h"
#include "include/core/SkBitmap.h"
#include "include/core/SkBlendMode.h"
#include "include/core/SkCanvas.h"
#include "include/core/SkColor.h"
#include "include/core/SkColorType.h"
#include "include/core/SkDataTable.h"
#include "include/core/SkFont.h"
#include "include/core/SkFontMgr.h"
#include "include/core/SkFontStyle.h"
#include "include/core/SkFontTypes.h"
#include "include/core/SkImageInfo.h"
#include "include/core/SkPaint.h"
#include "include/core/SkPoint.h"
#include "include/core/SkRect.h"
#include "include/core/SkRefCnt.h"
#include "include/core/SkScalar.h"
#include "include/core/SkStream.h"
#include "include/core/SkString.h"
#include "include/core/SkSurface.h"
#include "include/core/SkSurfaceProps.h"
#include "include/core/SkTextBlob.h"
#include "include/core/SkTypeface.h"
#include "include/core/SkTypes.h"
#include "include/encode/SkPngEncoder.h"
#include "include/gpu/GpuTypes.h"
#include "include/gpu/GrDirectContext.h"
#include "include/gpu/ganesh/SkSurfaceGanesh.h"
#include "include/private/base/SkTArray.h"
#include "include/private/base/SkTemplates.h"
#include "include/private/base/SkTo.h"
#include "src/base/SkSpinlock.h"
#include "src/gpu/ganesh/GrDirectContextPriv.h"
#include "src/gpu/ganesh/text/GrAtlasManager.h"
#include "src/text/gpu/TextBlobRedrawCoordinator.h"
#include "tests/CtsEnforcement.h"
#include "tests/Test.h"
#include "tools/fonts/FontToolUtils.h"
#include "tools/fonts/RandomScalerContext.h"
#include "tools/gpu/ganesh/GrAtlasTools.h"
#include <algorithm>
#include <cstdint>
#include <cstring>
#include <string>

Go to the source code of this file.

Classes
class	GrTextBlobTestingPeer

Functions
static void	draw (SkCanvas *canvas, int redraw, const TArray< sk_sp< SkTextBlob > > &blobs)
static void	setup_always_evict_atlas (GrDirectContext *dContext)
static void	text_blob_cache_inner (skiatest::Reporter *reporter, GrDirectContext *dContext, int maxTotalText, int maxGlyphID, int maxFamilies, bool normal, bool stressTest)
	DEF_GANESH_TEST_FOR_MOCK_CONTEXT (TextBlobCache, reporter, ctxInfo)
	DEF_GANESH_TEST_FOR_MOCK_CONTEXT (TextBlobStressCache, reporter, ctxInfo)
	DEF_GANESH_TEST_FOR_MOCK_CONTEXT (TextBlobAbnormal, reporter, ctxInfo)
	DEF_GANESH_TEST_FOR_MOCK_CONTEXT (TextBlobStressAbnormal, reporter, ctxInfo)
static SkBitmap	draw_blob (SkTextBlob *blob, SkSurface *surface, SkPoint offset)
static bool	compare_bitmaps (const SkBitmap &expected, const SkBitmap &actual)
static sk_sp< SkTextBlob >	make_blob ()
void	write_png (const std::string &filename, const SkBitmap &bitmap)
	DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS (TextBlobJaggedGlyph, reporter, ctxInfo, CtsEnforcement::kApiLevel_T)
	DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS (TextBlobSmoothScroll, reporter, ctxInfo, CtsEnforcement::kApiLevel_T)

Variables
static const int	kWidth = 1024
static const int	kHeight = 768
static const int	kScreenDim = 160
static const bool	kDumpPngs = true

Function Documentation

compare_bitmaps()

static bool compare_bitmaps ( const SkBitmap &  expected, const SkBitmap &  actual  )

static

Definition at line 234 of file TextBlobCacheTest.cpp.

                                                                              {
    SkASSERT(expected.width() == actual.width());
    SkASSERT(expected.height() == actual.height());
    for (int i = 0; i < expected.width(); ++i) {
        for (int j = 0; j < expected.height(); ++j) {
            SkColor expectedColor = expected.getColor(i, j);
            SkColor actualColor = actual.getColor(i, j);
            if (expectedColor != actualColor) {
                return false;
            }
        }
    }
    return true;
}

DEF_GANESH_TEST_FOR_MOCK_CONTEXT() [1/4]

DEF_GANESH_TEST_FOR_MOCK_CONTEXT	(	TextBlobAbnormal	,
		reporter	,
		ctxInfo
	)

Definition at line 208 of file TextBlobCacheTest.cpp.

                                                                      {
    text_blob_cache_inner(reporter, ctxInfo.directContext(), 256, 256, 10, false, false);
}

DEF_GANESH_TEST_FOR_MOCK_CONTEXT() [2/4]

DEF_GANESH_TEST_FOR_MOCK_CONTEXT	(	TextBlobCache	,
		reporter	,
		ctxInfo
	)

Definition at line 200 of file TextBlobCacheTest.cpp.

                                                                   {
    text_blob_cache_inner(reporter, ctxInfo.directContext(), 1024, 256, 30, true, false);
}

DEF_GANESH_TEST_FOR_MOCK_CONTEXT() [3/4]

DEF_GANESH_TEST_FOR_MOCK_CONTEXT	(	TextBlobStressAbnormal	,
		reporter	,
		ctxInfo
	)

Definition at line 212 of file TextBlobCacheTest.cpp.

                                                                            {
    text_blob_cache_inner(reporter, ctxInfo.directContext(), 256, 256, 10, false, true);
}

DEF_GANESH_TEST_FOR_MOCK_CONTEXT() [4/4]

DEF_GANESH_TEST_FOR_MOCK_CONTEXT	(	TextBlobStressCache	,
		reporter	,
		ctxInfo
	)

Definition at line 204 of file TextBlobCacheTest.cpp.

                                                                         {
    text_blob_cache_inner(reporter, ctxInfo.directContext(), 256, 256, 10, true, true);
}

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS() [1/2]

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS	(	TextBlobJaggedGlyph	,
		reporter	,
		ctxInfo	,
		CtsEnforcement::kApiLevel_T
	)

Definition at line 327 of file TextBlobCacheTest.cpp.

                                                                  {
    auto direct = ctxInfo.directContext();
    const SkImageInfo info =
            SkImageInfo::Make(kScreenDim, kScreenDim, kN32_SkColorType, kPremul_SkAlphaType);
    auto surface = SkSurfaces::RenderTarget(direct, skgpu::Budgeted::kNo, info);
 
    auto blob = make_blob();
 
    for (int y = 40; y < kScreenDim - 40; y++) {
        SkBitmap base = draw_blob(blob.get(), surface.get(), {40, y + 0.0f});
        SkBitmap half = draw_blob(blob.get(), surface.get(), {40, y + 0.5f});
        SkBitmap unit = draw_blob(blob.get(), surface.get(), {40, y + 1.0f});
        bool isOk = compare_bitmaps(base, half) || compare_bitmaps(unit, half);
        REPORTER_ASSERT(reporter, isOk);
        if (!isOk) {
            if (kDumpPngs) {
                {
                    std::string filename = "bad/half-y" + std::to_string(y) + ".png";
                    write_png(filename, half);
                }
                {
                    std::string filename = "good/half-y" + std::to_string(y) + ".png";
                    write_png(filename, base);
                }
            }
            break;
        }
    }
 
    // Testing the x direction across all platforms does not workout, because letter spacing can
    // change based on non-integer advance widths, but this has been useful for diagnosing problems.
#if 0
    blob = make_blob();
    for (int x = 40; x < kScreenDim - 40; x++) {
        SkBitmap base = draw_blob(blob.get(), surface.get(), {x + 0.0f, 40});
        SkBitmap half = draw_blob(blob.get(), surface.get(), {x + 0.5f, 40});
        SkBitmap unit = draw_blob(blob.get(), surface.get(), {x + 1.0f, 40});
        bool isOk = compare_bitmaps(base, half) || compare_bitmaps(unit, half);
        REPORTER_ASSERT(reporter, isOk);
        if (!isOk) {
            if (kDumpPngs) {
                {
                    std::string filename = "bad/half-x" + std::to_string(x) + ".png";
                    write_png(filename, half);
                }
                {
                    std::string filename = "good/half-x" + std::to_string(x) + ".png";
                    write_png(filename, base);
                }
            }
            break;
        }
    }
#endif
}

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS() [2/2]

DEF_GANESH_TEST_FOR_RENDERING_CONTEXTS	(	TextBlobSmoothScroll	,
		reporter	,
		ctxInfo	,
		CtsEnforcement::kApiLevel_T
	)

Definition at line 386 of file TextBlobCacheTest.cpp.

                                                                  {
    auto direct = ctxInfo.directContext();
    const SkImageInfo info =
            SkImageInfo::Make(kScreenDim, kScreenDim, kN32_SkColorType, kPremul_SkAlphaType);
    auto surface = SkSurfaces::RenderTarget(direct, skgpu::Budgeted::kNo, info);
 
    auto movingBlob = make_blob();
 
    for (SkScalar y = 40; y < 50; y += 1.0/8.0) {
        auto expectedBlob = make_blob();
        auto expectedBitMap = draw_blob(expectedBlob.get(), surface.get(), {40, y});
        auto movingBitmap = draw_blob(movingBlob.get(), surface.get(), {40, y});
        bool isOk = compare_bitmaps(expectedBitMap, movingBitmap);
        REPORTER_ASSERT(reporter, isOk);
        if (!isOk) {
            if (kDumpPngs) {
                {
                    std::string filename = "bad/scroll-y" + std::to_string(y) + ".png";
                    write_png(filename, movingBitmap);
                }
                {
                    std::string filename = "good/scroll-y" + std::to_string(y) + ".png";
                    write_png(filename, expectedBitMap);
                }
            }
            break;
        }
    }
}

draw()

static void draw ( SkCanvas *  canvas, int  redraw, const TArray< sk_sp< SkTextBlob > > &  blobs  )

static

Definition at line 62 of file TextBlobCacheTest.cpp.

                                                                                       {
    int yOffset = 0;
    for (int r = 0; r < redraw; r++) {
        for (int i = 0; i < blobs.size(); i++) {
            const auto& blob = blobs[i];
            const SkRect& bounds = blob->bounds();
            yOffset += SkScalarCeilToInt(bounds.height());
            SkPaint paint;
            canvas->drawTextBlob(blob, 0, SkIntToScalar(yOffset), paint);
        }
    }
}

draw_blob()

static SkBitmap draw_blob ( SkTextBlob *  blob, SkSurface *  surface, SkPoint  offset  )

static

Definition at line 218 of file TextBlobCacheTest.cpp.

                                                                                {
 
    SkPaint paint;
 
    SkCanvas* canvas = surface->getCanvas();
    canvas->save();
    canvas->drawColor(SK_ColorWHITE, SkBlendMode::kSrc);
    canvas->translate(offset.fX, offset.fY);
    canvas->drawTextBlob(blob, 0, 0, paint);
    SkBitmap bitmap;
    bitmap.allocN32Pixels(kScreenDim, kScreenDim);
    surface->readPixels(bitmap, 0, 0);
    canvas->restore();
    return bitmap;
}

make_blob()

static sk_sp< SkTextBlob > make_blob ( )

static

Definition at line 249 of file TextBlobCacheTest.cpp.

                                     {
    auto tf = ToolUtils::CreateTestTypeface("Roboto2-Regular", SkFontStyle());
    SkFont font;
    font.setTypeface(tf);
    font.setSubpixel(false);
    font.setEdging(SkFont::Edging::kAlias);
    font.setSize(24);
 
    static char text[] = "HekpqB";
    static const int maxGlyphLen = sizeof(text) * 4;
    SkGlyphID glyphs[maxGlyphLen];
    int glyphCount =
            font.textToGlyphs(text, sizeof(text), SkTextEncoding::kUTF8, glyphs, maxGlyphLen);
 
    SkTextBlobBuilder builder;
    const auto& runBuffer = builder.allocRun(font, glyphCount, 0, 0);
    for (int i = 0; i < glyphCount; i++) {
        runBuffer.glyphs[i] = glyphs[i];
    }
    return builder.make();
}

setup_always_evict_atlas()

static void setup_always_evict_atlas ( GrDirectContext *  dContext )

static

Definition at line 78 of file TextBlobCacheTest.cpp.

                                                                {
    GrAtlasManagerTools::SetAtlasDimensionsToMinimum(dContext->priv().getAtlasManager());
}

text_blob_cache_inner()

static void text_blob_cache_inner ( skiatest::Reporter *  reporter, GrDirectContext *  dContext, int  maxTotalText, int  maxGlyphID, int  maxFamilies, bool  normal, bool  stressTest  )

static

Definition at line 92 of file TextBlobCacheTest.cpp.

                                                   {
    // setup surface
    uint32_t flags = 0;
    SkSurfaceProps props(flags, kRGB_H_SkPixelGeometry);
 
    // configure our context for maximum stressing of cache and atlas
    if (stressTest) {
        setup_always_evict_atlas(dContext);
        GrTextBlobTestingPeer::SetBudget(dContext->priv().getTextBlobCache(), 0);
    }
 
    SkImageInfo info = SkImageInfo::Make(kWidth, kHeight, kRGBA_8888_SkColorType,
                                         kPremul_SkAlphaType);
    auto surface(SkSurfaces::RenderTarget(dContext, skgpu::Budgeted::kNo, info, 0, &props));
    REPORTER_ASSERT(reporter, surface);
    if (!surface) {
        return;
    }
 
    SkCanvas* canvas = surface->getCanvas();
 
    sk_sp<SkFontMgr> fm(ToolUtils::TestFontMgr());
 
    int count = std::min(fm->countFamilies(), maxFamilies);
 
    // make a ton of text
    AutoTArray<uint16_t> text(maxTotalText);
    for (int i = 0; i < maxTotalText; i++) {
        text[i] = i % maxGlyphID;
    }
 
    // generate textblobs
    TArray<sk_sp<SkTextBlob>> blobs;
    for (int i = 0; i < count; i++) {
        SkFont font;
        font.setSize(48); // draw big glyphs to really stress the atlas
 
        SkString familyName;
        fm->getFamilyName(i, &familyName);
        sk_sp<SkFontStyleSet> set(fm->createStyleSet(i));
        for (int j = 0; j < set->count(); ++j) {
            SkFontStyle fs;
            set->getStyle(j, &fs, nullptr);
 
            // We use a typeface which randomy returns unexpected mask formats to fuzz
            sk_sp<SkTypeface> orig(set->createTypeface(j));
            if (normal) {
                font.setTypeface(orig);
            } else {
                font.setTypeface(sk_make_sp<SkRandomTypeface>(orig, SkPaint(), true));
            }
 
            SkTextBlobBuilder builder;
            for (int aa = 0; aa < 2; aa++) {
                for (int subpixel = 0; subpixel < 2; subpixel++) {
                    for (int lcd = 0; lcd < 2; lcd++) {
                        font.setEdging(SkFont::Edging::kAlias);
                        if (aa) {
                            font.setEdging(SkFont::Edging::kAntiAlias);
                            if (lcd) {
                                font.setEdging(SkFont::Edging::kSubpixelAntiAlias);
                            }
                        }
                        font.setSubpixel(SkToBool(subpixel));
                        if (!SkToBool(lcd)) {
                            font.setSize(160);
                        }
                        const SkTextBlobBuilder::RunBuffer& run = builder.allocRun(font,
                                                                                   maxTotalText,
                                                                                   0, 0,
                                                                                   nullptr);
                        memcpy(run.glyphs, text.get(), maxTotalText * sizeof(uint16_t));
                    }
                }
            }
            blobs.emplace_back(builder.make());
        }
    }
 
    // create surface where LCD is impossible
    info = SkImageInfo::Make(kWidth, kHeight, kRGBA_8888_SkColorType, kPremul_SkAlphaType);
    SkSurfaceProps propsNoLCD(0, kUnknown_SkPixelGeometry);
    auto surfaceNoLCD(canvas->makeSurface(info, &propsNoLCD));
    REPORTER_ASSERT(reporter, surface);
    if (!surface) {
        return;
    }
 
    SkCanvas* canvasNoLCD = surfaceNoLCD->getCanvas();
 
    // test redraw
    draw(canvas, 2, blobs);
    draw(canvasNoLCD, 2, blobs);
 
    // test draw after free
    dContext->freeGpuResources();
    draw(canvas, 1, blobs);
 
    dContext->freeGpuResources();
    draw(canvasNoLCD, 1, blobs);
 
    // test draw after abandon
    dContext->abandonContext();
    draw(canvas, 1, blobs);
}

write_png()

void write_png	(	const std::string &	filename,
		const SkBitmap &	bitmap
	)

Definition at line 321 of file TextBlobCacheTest.cpp.

                                                                  {
    SkFILEWStream w{filename.c_str()};
    SkASSERT_RELEASE(SkPngEncoder::Encode(&w, bitmap.pixmap(), {}));
    w.fsync();
}

Variable Documentation

kDumpPngs

const bool kDumpPngs = true

static

Definition at line 317 of file TextBlobCacheTest.cpp.

kHeight

const int kHeight = 768

static

Definition at line 76 of file TextBlobCacheTest.cpp.

kScreenDim

const int kScreenDim = 160

static

Definition at line 216 of file TextBlobCacheTest.cpp.

kWidth

const int kWidth = 1024

static

Definition at line 75 of file TextBlobCacheTest.cpp.