skia2/gm/typeface.cpp

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/*
* Copyright 2012 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#include "gm.h"
#include "Resources.h"
#include "SkCanvas.h"
#include "SkString.h"
#include "SkSurfaceProps.h"
#include "SkTypeface.h"
#include "SkTypes.h"
static void getGlyphPositions(const SkPaint& paint, const uint16_t glyphs[],
int count, SkScalar x, SkScalar y, SkPoint pos[]) {
SkASSERT(SkPaint::kGlyphID_TextEncoding == paint.getTextEncoding());
SkAutoSTMalloc<128, SkScalar> widthStorage(count);
SkScalar* widths = widthStorage.get();
paint.getTextWidths(glyphs, count * sizeof(uint16_t), widths);
for (int i = 0; i < count; ++i) {
pos[i].set(x, y);
x += widths[i];
}
}
static void applyKerning(SkPoint pos[], const int32_t adjustments[], int count,
const SkPaint& paint) {
SkScalar scale = paint.getTextSize() / paint.getTypeface()->getUnitsPerEm();
SkScalar globalAdj = 0;
for (int i = 0; i < count - 1; ++i) {
globalAdj += adjustments[i] * scale;
pos[i + 1].fX += globalAdj;
}
}
static void drawKernText(SkCanvas* canvas, const void* text, size_t len,
SkScalar x, SkScalar y, const SkPaint& paint) {
SkTypeface* face = paint.getTypeface();
if (!face) {
canvas->drawText(text, len, x, y, paint);
return;
}
SkAutoSTMalloc<128, uint16_t> glyphStorage(len);
uint16_t* glyphs = glyphStorage.get();
int glyphCount = paint.textToGlyphs(text, len, glyphs);
if (glyphCount < 1) {
return;
}
SkAutoSTMalloc<128, int32_t> adjustmentStorage(glyphCount - 1);
int32_t* adjustments = adjustmentStorage.get();
if (!face->getKerningPairAdjustments(glyphs, glyphCount, adjustments)) {
canvas->drawText(text, len, x, y, paint);
return;
}
SkPaint glyphPaint(paint);
glyphPaint.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
SkAutoSTMalloc<128, SkPoint> posStorage(glyphCount);
SkPoint* pos = posStorage.get();
getGlyphPositions(glyphPaint, glyphs, glyphCount, x, y, pos);
applyKerning(pos, adjustments, glyphCount, glyphPaint);
canvas->drawPosText(glyphs, glyphCount * sizeof(uint16_t), pos, glyphPaint);
}
constexpr struct {
const char* fName;
SkTypeface::Style fStyle;
} gFaceStyles[] = {
{ "sans-serif", SkTypeface::kNormal },
{ "sans-serif", SkTypeface::kBold },
{ "sans-serif", SkTypeface::kItalic },
{ "sans-serif", SkTypeface::kBoldItalic },
{ "serif", SkTypeface::kNormal },
{ "serif", SkTypeface::kBold },
{ "serif", SkTypeface::kItalic },
{ "serif", SkTypeface::kBoldItalic },
{ "monospace", SkTypeface::kNormal },
{ "monospace", SkTypeface::kBold },
{ "monospace", SkTypeface::kItalic },
{ "monospace", SkTypeface::kBoldItalic },
};
constexpr int gFaceStylesCount = SK_ARRAY_COUNT(gFaceStyles);
class TypefaceStylesGM : public skiagm::GM {
sk_sp<SkTypeface> fFaces[gFaceStylesCount];
bool fApplyKerning;
public:
Move font loading in gm tests and benches out of constructors Constructing the gm tests and benches causes many calls to font loads. This is visible as profiling samples in fontconfig and freetype on Linux for all profiling runs of nanobench. This complicates analysis of test-cases that are suspected of being slow due to font-related issues. Move the font loading to GM::onOnceBeforeDraw and Benchmark::onPreDraw. This way the code is not executed if the testcase does not match the nanobench --match filter. This way the samples in font-related code are more easy to identify as legitimate occurances caused by the testcase. This should not cause differences in timings, because: * Benchmark::preDraw / onPreDraw is defined to be run outside the timer * GM::runAsBench is not enabled for any of the modified testcases. Also nanobench untimed warmup round should run the onOnceBeforeDraw. (and there are other GM::runAsBench gms already doing loading in onOnceBeforeDraw). Changes the behavior: In TextBench: Before, the test would report two different gms with the same name if the color emoji font was not loaded successfully. After, the test always reports all tests as individual names. Generally: The errors from loading fonts now print inbetween each testcase, as opposed to printing during construction phase. Sample output: ( 143/145 MB 1872) 14.7ms 8888 gm quadclosepathResource /fonts/Funkster.ttf not a valid font. ( 160/160 MB 1831) 575µs 8888 gm surfacenewResource /fonts/Funkster.ttf not a valid font. ( 163/165 MB 1816) 12.5ms 8888 gm linepathResource /fonts/Funkster.ttf not a valid font. ( 263/411 MB 1493) 118ms 8888 gm typefacestyles_kerningResource /fonts/Funkster.ttf not a valid font. ( 374/411 MB 1231) 7.16ms 565 gm getpostextpathResource /fonts/Funkster.ttf not a valid font. ( 323/411 MB 1179) 4.92ms 565 gm stringartResource /fonts/Funkster.ttf not a valid font. ( 347/493 MB 917) 191ms 565 gm patch_gridResource /fonts/Funkster.ttf not a valid font. ( 375/493 MB 857) 23.9ms gpu gm clipdrawdrawCannot render path (0) ( 393/493 MB 706) 2.91ms unit test ParsePath------ png error IEND: CRC error ( 394/493 MB 584) 166ms gpu gm hairmodesResource /fonts/Funkster.ttf not a valid font. Resource /fonts/Funkster.ttf not a valid font. Resource /fonts/Funkster.ttf not a valid font. ... Review URL: https://codereview.chromium.org/1144023002
2015-05-21 13:15:28 +00:00
TypefaceStylesGM(bool applyKerning)
: fApplyKerning(applyKerning) {
memset(fFaces, 0, sizeof(fFaces));
}
protected:
Move font loading in gm tests and benches out of constructors Constructing the gm tests and benches causes many calls to font loads. This is visible as profiling samples in fontconfig and freetype on Linux for all profiling runs of nanobench. This complicates analysis of test-cases that are suspected of being slow due to font-related issues. Move the font loading to GM::onOnceBeforeDraw and Benchmark::onPreDraw. This way the code is not executed if the testcase does not match the nanobench --match filter. This way the samples in font-related code are more easy to identify as legitimate occurances caused by the testcase. This should not cause differences in timings, because: * Benchmark::preDraw / onPreDraw is defined to be run outside the timer * GM::runAsBench is not enabled for any of the modified testcases. Also nanobench untimed warmup round should run the onOnceBeforeDraw. (and there are other GM::runAsBench gms already doing loading in onOnceBeforeDraw). Changes the behavior: In TextBench: Before, the test would report two different gms with the same name if the color emoji font was not loaded successfully. After, the test always reports all tests as individual names. Generally: The errors from loading fonts now print inbetween each testcase, as opposed to printing during construction phase. Sample output: ( 143/145 MB 1872) 14.7ms 8888 gm quadclosepathResource /fonts/Funkster.ttf not a valid font. ( 160/160 MB 1831) 575µs 8888 gm surfacenewResource /fonts/Funkster.ttf not a valid font. ( 163/165 MB 1816) 12.5ms 8888 gm linepathResource /fonts/Funkster.ttf not a valid font. ( 263/411 MB 1493) 118ms 8888 gm typefacestyles_kerningResource /fonts/Funkster.ttf not a valid font. ( 374/411 MB 1231) 7.16ms 565 gm getpostextpathResource /fonts/Funkster.ttf not a valid font. ( 323/411 MB 1179) 4.92ms 565 gm stringartResource /fonts/Funkster.ttf not a valid font. ( 347/493 MB 917) 191ms 565 gm patch_gridResource /fonts/Funkster.ttf not a valid font. ( 375/493 MB 857) 23.9ms gpu gm clipdrawdrawCannot render path (0) ( 393/493 MB 706) 2.91ms unit test ParsePath------ png error IEND: CRC error ( 394/493 MB 584) 166ms gpu gm hairmodesResource /fonts/Funkster.ttf not a valid font. Resource /fonts/Funkster.ttf not a valid font. Resource /fonts/Funkster.ttf not a valid font. ... Review URL: https://codereview.chromium.org/1144023002
2015-05-21 13:15:28 +00:00
void onOnceBeforeDraw() override {
for (int i = 0; i < gFaceStylesCount; i++) {
fFaces[i] = SkTypeface::MakeFromName(
sk_tool_utils::platform_font_name(
gFaceStyles[i].fName), SkFontStyle::FromOldStyle(gFaceStyles[i].fStyle));
Move font loading in gm tests and benches out of constructors Constructing the gm tests and benches causes many calls to font loads. This is visible as profiling samples in fontconfig and freetype on Linux for all profiling runs of nanobench. This complicates analysis of test-cases that are suspected of being slow due to font-related issues. Move the font loading to GM::onOnceBeforeDraw and Benchmark::onPreDraw. This way the code is not executed if the testcase does not match the nanobench --match filter. This way the samples in font-related code are more easy to identify as legitimate occurances caused by the testcase. This should not cause differences in timings, because: * Benchmark::preDraw / onPreDraw is defined to be run outside the timer * GM::runAsBench is not enabled for any of the modified testcases. Also nanobench untimed warmup round should run the onOnceBeforeDraw. (and there are other GM::runAsBench gms already doing loading in onOnceBeforeDraw). Changes the behavior: In TextBench: Before, the test would report two different gms with the same name if the color emoji font was not loaded successfully. After, the test always reports all tests as individual names. Generally: The errors from loading fonts now print inbetween each testcase, as opposed to printing during construction phase. Sample output: ( 143/145 MB 1872) 14.7ms 8888 gm quadclosepathResource /fonts/Funkster.ttf not a valid font. ( 160/160 MB 1831) 575µs 8888 gm surfacenewResource /fonts/Funkster.ttf not a valid font. ( 163/165 MB 1816) 12.5ms 8888 gm linepathResource /fonts/Funkster.ttf not a valid font. ( 263/411 MB 1493) 118ms 8888 gm typefacestyles_kerningResource /fonts/Funkster.ttf not a valid font. ( 374/411 MB 1231) 7.16ms 565 gm getpostextpathResource /fonts/Funkster.ttf not a valid font. ( 323/411 MB 1179) 4.92ms 565 gm stringartResource /fonts/Funkster.ttf not a valid font. ( 347/493 MB 917) 191ms 565 gm patch_gridResource /fonts/Funkster.ttf not a valid font. ( 375/493 MB 857) 23.9ms gpu gm clipdrawdrawCannot render path (0) ( 393/493 MB 706) 2.91ms unit test ParsePath------ png error IEND: CRC error ( 394/493 MB 584) 166ms gpu gm hairmodesResource /fonts/Funkster.ttf not a valid font. Resource /fonts/Funkster.ttf not a valid font. Resource /fonts/Funkster.ttf not a valid font. ... Review URL: https://codereview.chromium.org/1144023002
2015-05-21 13:15:28 +00:00
}
}
SkString onShortName() override {
SkString name("typefacestyles");
if (fApplyKerning) {
name.append("_kerning");
}
name.append(sk_tool_utils::major_platform_os_name());
return name;
}
SkISize onISize() override {
return SkISize::Make(640, 480);
}
void onDraw(SkCanvas* canvas) override {
SkPaint paint;
paint.setAntiAlias(true);
paint.setTextSize(SkIntToScalar(30));
const char* text = fApplyKerning ? "Type AWAY" : "Hamburgefons";
const size_t textLen = strlen(text);
SkScalar x = SkIntToScalar(10);
SkScalar dy = paint.getFontMetrics(nullptr);
SkScalar y = dy;
if (fApplyKerning) {
paint.setSubpixelText(true);
} else {
paint.setLinearText(true);
}
for (int i = 0; i < gFaceStylesCount; i++) {
paint.setTypeface(fFaces[i]);
canvas->drawText(text, textLen, x, y, paint);
if (fApplyKerning) {
drawKernText(canvas, text, textLen, x + 240, y, paint);
}
y += dy;
}
}
private:
typedef skiagm::GM INHERITED;
};
DEF_GM( return new TypefaceStylesGM(false); )
DEF_GM( return new TypefaceStylesGM(true); )
////////////////////////////////////////////////////////////////////////////////
static void draw_typeface_rendering_gm(SkCanvas* canvas, sk_sp<SkTypeface> face,
char character = 'A') {
struct AliasType {
bool antiAlias;
bool subpixelAntitalias;
bool inLayer;
} constexpr aliasTypes[] {
#ifndef SK_BUILD_FOR_IOS
// This gm crashes on iOS when drawing an embedded bitmap when requesting aliased rendering.
// The crash looks like
// libTrueTypeScaler.dylib`<redacted> + 80
// stop reason = EXC_BAD_ACCESS (code=EXC_ARM_DA_ALIGN, address=...)
// -> 0x330b19d0 <+80>: strd r2, r3, [r5, #36]
// 0x330b19d4 <+84>: movs r3, #0x0
// 0x330b19d6 <+86>: add r2, sp, #0x28
// 0x330b19d8 <+88>: ldr r0, [r4, #0x4]
// Disable testing embedded bitmaps on iOS for now.
// See https://bug.skia.org/5530 .
{ false, false, false }, // aliased
#endif
{ true, false, false }, // anti-aliased
{ true, true , false }, // subpixel anti-aliased
{ true, false, true }, // anti-aliased in layer (flat pixel geometry)
{ true, true , true }, // subpixel anti-aliased in layer (flat pixel geometry)
};
// The hintgasp.ttf is designed for the following sizes to be different.
// GASP_DOGRAY 0x0002 0<=ppem<=10
// GASP_SYMMETRIC_SMOOTHING 0x0008 0<=ppem<=10
// GASP_GRIDFIT 0x0001 11<=ppem<=12
// GASP_SYMMETRIC_GRIDFIT 0x0004 11<=ppem<=12
// GASP_DOGRAY|GASP_GRIDFIT 0x0003 13<=ppem<=14
// GASP_SYMMETRIC_SMOOTHING|GASP_SYMMETRIC_GRIDFIT 0x000C 13<=ppem<=14
// (neither) 0x0000 15<=ppem
// Odd sizes have embedded bitmaps.
constexpr SkScalar textSizes[] = { 9, 10, 11, 12, 13, 14, 15, 16 };
constexpr SkPaint::Hinting hintingTypes[] = { SkPaint::kNo_Hinting,
SkPaint::kSlight_Hinting,
SkPaint::kNormal_Hinting,
SkPaint::kFull_Hinting };
struct SubpixelType {
bool requested;
SkVector offset;
} constexpr subpixelTypes[] = {
{ false, { 0.00, 0.00 } },
{ true , { 0.00, 0.00 } },
{ true , { 0.25, 0.00 } },
{ true , { 0.25, 0.25 } },
};
constexpr bool rotateABitTypes[] = { false, true };
SkPaint paint;
paint.setTypeface(face);
paint.setEmbeddedBitmapText(true);
SkScalar x = 0;
SkScalar xMax = x;
SkScalar xBase = 0;
SkScalar y = 0; // The baseline of the previous output
for (const SubpixelType subpixel : subpixelTypes) {
y = 0;
paint.setSubpixelText(subpixel.requested);
for (const AliasType& alias : aliasTypes) {
paint.setAntiAlias(alias.antiAlias);
paint.setLCDRenderText(alias.subpixelAntitalias);
SkAutoCanvasRestore acr(canvas, false);
if (alias.inLayer) {
canvas->saveLayer(nullptr, &paint);
}
for (const SkScalar& textSize : textSizes) {
x = xBase + 5;
paint.setTextSize(textSize);
SkScalar dy = SkScalarCeilToScalar(paint.getFontMetrics(nullptr));
y += dy;
for (const SkPaint::Hinting& hinting : hintingTypes) {
paint.setHinting(hinting);
for (const bool& rotateABit : rotateABitTypes) {
SkAutoCanvasRestore acr(canvas, true);
if (rotateABit) {
canvas->rotate(2, x + subpixel.offset.x(),
y + subpixel.offset.y());
}
canvas->drawText(&character, 1,
x + subpixel.offset.x(),
y + subpixel.offset.y(), paint);
SkScalar dx = SkScalarCeilToScalar(
paint.measureText(&character, 1)) + 5;
x += dx;
xMax = SkTMax(x, xMax);
}
}
}
y += 10;
}
xBase = xMax;
}
}
DEF_SIMPLE_GM_BG_NAME(typefacerendering, canvas, 640, 680, SK_ColorWHITE,
SkStringPrintf("typefacerendering%s",
sk_tool_utils::major_platform_os_name().c_str())) {
if (sk_sp<SkTypeface> face = MakeResourceAsTypeface("/fonts/hintgasp.ttf")) {
draw_typeface_rendering_gm(canvas, std::move(face));
}
}
// Type1 fonts don't currently work in Skia on Windows.
#ifndef SK_BUILD_FOR_WIN
DEF_SIMPLE_GM_BG_NAME(typefacerendering_pfa, canvas, 640, 680, SK_ColorWHITE,
SkStringPrintf("typefacerendering_pfa%s",
sk_tool_utils::major_platform_os_name().c_str())) {
if (sk_sp<SkTypeface> face = MakeResourceAsTypeface("fonts/Roboto2-Regular.pfa")) {
// This subsetted typeface doesn't have the character 'A'.
draw_typeface_rendering_gm(canvas, std::move(face), 'O');
}
}
DEF_SIMPLE_GM_BG_NAME(typefacerendering_pfb, canvas, 640, 680, SK_ColorWHITE,
SkStringPrintf("typefacerendering_pfb%s",
sk_tool_utils::major_platform_os_name().c_str())) {
if (sk_sp<SkTypeface> face = MakeResourceAsTypeface("fonts/Roboto2-Regular.pfb")) {
draw_typeface_rendering_gm(canvas, std::move(face), 'O');
}
}
#endif