void Transform::transform(GLfixed* point, int x, int y) const
{
SkPoint s;
mTransform.mapXY(SkIntToScalar(x), SkIntToScalar(y), &s);
point[0] = SkScalarToFixed(s.fX);
point[1] = SkScalarToFixed(s.fY);
}
void SkRandomScalerContext::generateAdvance(SkGlyph* glyph) {
fProxy->getAdvance(glyph);
SkVector advance;
fMatrix.mapXY(SkFixedToScalar(glyph->fAdvanceX),
SkFixedToScalar(glyph->fAdvanceY), &advance);
glyph->fAdvanceX = SkScalarToFixed(advance.fX);
glyph->fAdvanceY = SkScalarToFixed(advance.fY);
}
void SkScalerContext_DW::generateAdvance(SkGlyph* glyph) {
//Delta is the difference between the right/left side bearing metric
//and where the right/left side bearing ends up after hinting.
//DirectWrite does not provide this information.
glyph->fRsbDelta = 0;
glyph->fLsbDelta = 0;
glyph->fAdvanceX = 0;
glyph->fAdvanceY = 0;
uint16_t glyphId = glyph->getGlyphID();
DWRITE_GLYPH_METRICS gm;
if (DWRITE_MEASURING_MODE_GDI_CLASSIC == fMeasuringMode ||
DWRITE_MEASURING_MODE_GDI_NATURAL == fMeasuringMode)
{
HRVM(fTypeface->fDWriteFontFace->GetGdiCompatibleGlyphMetrics(
fTextSizeMeasure,
1.0f, // pixelsPerDip
&fGsA,
DWRITE_MEASURING_MODE_GDI_NATURAL == fMeasuringMode,
&glyphId, 1,
&gm),
"Could not get gdi compatible glyph metrics.");
} else {
HRVM(fTypeface->fDWriteFontFace->GetDesignGlyphMetrics(&glyphId, 1, &gm),
"Could not get design metrics.");
}
DWRITE_FONT_METRICS dwfm;
fTypeface->fDWriteFontFace->GetMetrics(&dwfm);
SkScalar advanceX = SkScalarMulDiv(fTextSizeMeasure,
SkIntToScalar(gm.advanceWidth),
SkIntToScalar(dwfm.designUnitsPerEm));
SkVector vecs[1] = { { advanceX, 0 } };
if (DWRITE_MEASURING_MODE_GDI_CLASSIC == fMeasuringMode ||
DWRITE_MEASURING_MODE_GDI_NATURAL == fMeasuringMode)
{
// DirectWrite produced 'compatible' metrics, but while close,
// the end result is not always an integer as it would be with GDI.
vecs[0].fX = SkScalarRoundToScalar(advanceX);
fG_inv.mapVectors(vecs, SK_ARRAY_COUNT(vecs));
} else {
fSkXform.mapVectors(vecs, SK_ARRAY_COUNT(vecs));
}
glyph->fAdvanceX = SkScalarToFixed(vecs[0].fX);
glyph->fAdvanceY = SkScalarToFixed(vecs[0].fY);
}
SkColor SkHSVToColor(U8CPU a, const SkScalar hsv[3]) {
SkASSERT(hsv);
U8CPU s = SkUnitScalarClampToByte(hsv[1]);
U8CPU v = SkUnitScalarClampToByte(hsv[2]);
if (0 == s) { // shade of gray
return SkColorSetARGB(a, v, v, v);
}
SkFixed hx = (hsv[0] < 0 || hsv[0] >= SkIntToScalar(360)) ? 0 : SkScalarToFixed(hsv[0]/60);
SkFixed f = hx & 0xFFFF;
unsigned v_scale = SkAlpha255To256(v);
unsigned p = SkAlphaMul(255 - s, v_scale);
unsigned q = SkAlphaMul(255 - (s * f >> 16), v_scale);
unsigned t = SkAlphaMul(255 - (s * (SK_Fixed1 - f) >> 16), v_scale);
unsigned r, g, b;
SkASSERT((unsigned)(hx >> 16) < 6);
switch (hx >> 16) {
case 0: r = v; g = t; b = p; break;
case 1: r = q; g = v; b = p; break;
case 2: r = p; g = v; b = t; break;
case 3: r = p; g = q; b = v; break;
case 4: r = t; g = p; b = v; break;
default: r = v; g = p; b = q; break;
}
return SkColorSetARGB(a, r, g, b);
}
static void test_cubic2() {
const char* str = "M2242 -590088L-377758 9.94099e+07L-377758 9.94099e+07L2242 -590088Z";
SkPath path;
SkParsePath::FromSVGString(str, &path);
{
#ifdef SK_BUILD_FOR_WIN
// windows doesn't have strtof
float x = (float)strtod("9.94099e+07", NULL);
#else
float x = strtof("9.94099e+07", NULL);
#endif
int ix = (int)x;
int fx = (int)(x * 65536);
int ffx = SkScalarToFixed(x);
printf("%g %x %x %x\n", x, ix, fx, ffx);
SkRect r = path.getBounds();
SkIRect ir;
r.round(&ir);
printf("[%g %g %g %g] [%x %x %x %x]\n",
SkScalarToDouble(r.fLeft), SkScalarToDouble(r.fTop),
SkScalarToDouble(r.fRight), SkScalarToDouble(r.fBottom),
ir.fLeft, ir.fTop, ir.fRight, ir.fBottom);
}
SkBitmap bitmap;
bitmap.setConfig(SkBitmap::kARGB_8888_Config, 300, 200);
bitmap.allocPixels();
SkCanvas canvas(bitmap);
SkPaint paint;
paint.setAntiAlias(true);
canvas.drawPath(path, paint);
}
void SkRandomScalerContext::generateMetrics(SkGlyph* glyph) {
fProxy->getAdvance(glyph);
SkVector advance;
fMatrix.mapXY(SkFixedToScalar(glyph->fAdvanceX),
SkFixedToScalar(glyph->fAdvanceY), &advance);
glyph->fAdvanceX = SkScalarToFixed(advance.fX);
glyph->fAdvanceY = SkScalarToFixed(advance.fY);
SkPath path;
fProxy->getPath(*glyph, &path);
path.transform(fMatrix);
SkRect storage;
const SkPaint& paint = fFace->paint();
const SkRect& newBounds = paint.doComputeFastBounds(path.getBounds(),
&storage,
SkPaint::kFill_Style);
SkIRect ibounds;
newBounds.roundOut(&ibounds);
glyph->fLeft = ibounds.fLeft;
glyph->fTop = ibounds.fTop;
glyph->fWidth = ibounds.width();
glyph->fHeight = ibounds.height();
// Here we will change the mask format of the glyph
// NOTE this is being overridden by the base class
SkMask::Format format;
switch (glyph->getGlyphID() % 6) {
case 0:
format = SkMask::kLCD16_Format;
break;
case 1:
format = SkMask::kA8_Format;
break;
case 2:
format = SkMask::kARGB32_Format;
break;
default:
// we will fiddle with these in generate image
format = (SkMask::Format)MASK_FORMAT_UNKNOWN;
}
glyph->fMaskFormat = format;
}
/*
* Analyze filter-quality and matrix, and decide how to implement that.
*
* In general, we cascade down the request level [ High ... None ]
* - for a given level, if we can fulfill it, fine, else
* - else we downgrade to the next lower level and try again.
* We can always fulfill requests for Low and None
* - sometimes we will "ignore" Low and give None, but this is likely a legacy perf hack
* and may be removed.
*/
bool SkBitmapProcState::chooseProcs() {
fInvProc = SkMatrixPriv::GetMapXYProc(fInvMatrix);
fInvSx = SkScalarToFixed(fInvMatrix.getScaleX());
fInvSxFractionalInt = SkScalarToFractionalInt(fInvMatrix.getScaleX());
fInvKy = SkScalarToFixed(fInvMatrix.getSkewY());
fInvKyFractionalInt = SkScalarToFractionalInt(fInvMatrix.getSkewY());
fAlphaScale = SkAlpha255To256(SkColorGetA(fPaintColor));
fShaderProc32 = nullptr;
fShaderProc16 = nullptr;
fSampleProc32 = nullptr;
const bool trivialMatrix = (fInvMatrix.getType() & ~SkMatrix::kTranslate_Mask) == 0;
const bool clampClamp = SkShader::kClamp_TileMode == fTileModeX &&
SkShader::kClamp_TileMode == fTileModeY;
return this->chooseScanlineProcs(trivialMatrix, clampClamp);
}
// static
void SkPDFScalar::Append(SkScalar value, SkWStream* stream) {
// The range of reals in PDF/A is the same as SkFixed: +/- 32,767 and
// +/- 1/65,536 (though integers can range from 2^31 - 1 to -2^31).
// When using floats that are outside the whole value range, we can use
// integers instead.
#if defined(SK_SCALAR_IS_FIXED)
stream->writeScalarAsText(value);
return;
#endif // SK_SCALAR_IS_FIXED
#if !defined(SK_ALLOW_LARGE_PDF_SCALARS)
if (value > 32767 || value < -32767) {
stream->writeDecAsText(SkScalarRound(value));
return;
}
char buffer[SkStrAppendScalar_MaxSize];
char* end = SkStrAppendFixed(buffer, SkScalarToFixed(value));
stream->write(buffer, end - buffer);
return;
#endif // !SK_ALLOW_LARGE_PDF_SCALARS
#if defined(SK_SCALAR_IS_FLOAT) && defined(SK_ALLOW_LARGE_PDF_SCALARS)
// Floats have 24bits of significance, so anything outside that range is
// no more precise than an int. (Plus PDF doesn't support scientific
// notation, so this clamps to SK_Max/MinS32).
if (value > (1 << 24) || value < -(1 << 24)) {
stream->writeDecAsText(value);
return;
}
// Continue to enforce the PDF limits for small floats.
if (value < 1.0f/65536 && value > -1.0f/65536) {
stream->writeDecAsText(0);
return;
}
// SkStrAppendFloat might still use scientific notation, so use snprintf
// directly..
static const int kFloat_MaxSize = 19;
char buffer[kFloat_MaxSize];
int len = SNPRINTF(buffer, kFloat_MaxSize, "%#.8f", value);
// %f always prints trailing 0s, so strip them.
for (; buffer[len - 1] == '0' && len > 0; len--) {
buffer[len - 1] = '\0';
}
if (buffer[len - 1] == '.') {
buffer[len - 1] = '\0';
}
stream->writeText(buffer);
return;
#endif // SK_SCALAR_IS_FLOAT && SK_ALLOW_LARGE_PDF_SCALARS
}
GrTexture* GrCircleBlurFragmentProcessor::CreateCircleBlurProfileTexture(
GrTextureProvider* textureProvider,
const SkRect& circle,
float sigma,
float* offset) {
float halfWH = circle.width() / 2.0f;
int size;
compute_profile_offset_and_size(halfWH, sigma, offset, &size);
GrSurfaceDesc texDesc;
texDesc.fWidth = size;
texDesc.fHeight = 1;
texDesc.fConfig = kAlpha_8_GrPixelConfig;
static const GrUniqueKey::Domain kDomain = GrUniqueKey::GenerateDomain();
GrUniqueKey key;
GrUniqueKey::Builder builder(&key, kDomain, 2);
// The profile curve varies with both the sigma of the Gaussian and the size of the
// disk. Quantizing to 16.16 should be close enough though.
builder[0] = SkScalarToFixed(sigma);
builder[1] = SkScalarToFixed(halfWH);
builder.finish();
GrTexture *blurProfile = textureProvider->findAndRefTextureByUniqueKey(key);
if (!blurProfile) {
SkAutoTDeleteArray<uint8_t> profile(create_profile(halfWH, sigma));
blurProfile = textureProvider->createTexture(texDesc, SkBudgeted::kYes, profile.get(), 0);
if (blurProfile) {
textureProvider->assignUniqueKeyToTexture(key, blurProfile);
}
}
return blurProfile;
}
bool SkBitmapProcState::chooseProcs(const SkMatrix& inv, const SkPaint& paint) {
if (fOrigBitmap.width() == 0 || fOrigBitmap.height() == 0) {
return false;
}
const SkMatrix* m;
bool trivial_matrix = (inv.getType() & ~SkMatrix::kTranslate_Mask) == 0;
bool clamp_clamp = SkShader::kClamp_TileMode == fTileModeX &&
SkShader::kClamp_TileMode == fTileModeY;
if (clamp_clamp || trivial_matrix) {
m = &inv;
} else {
fUnitInvMatrix = inv;
fUnitInvMatrix.postIDiv(fOrigBitmap.width(), fOrigBitmap.height());
m = &fUnitInvMatrix;
}
fBitmap = &fOrigBitmap;
if (fOrigBitmap.hasMipMap()) {
int shift = fOrigBitmap.extractMipLevel(&fMipBitmap,
SkScalarToFixed(m->getScaleX()),
SkScalarToFixed(m->getSkewY()));
if (shift > 0) {
if (m != &fUnitInvMatrix) {
fUnitInvMatrix = *m;
m = &fUnitInvMatrix;
}
SkScalar scale = SkFixedToScalar(SK_Fixed1 >> shift);
fUnitInvMatrix.postScale(scale, scale);
// now point here instead of fOrigBitmap
fBitmap = &fMipBitmap;
}
}
static size_t linebreak(const char text[], const char stop[], const SkPaint& paint, SkScalar margin)
{
const char* start = text;
SkAutoGlyphCache ac(paint, NULL);
SkGlyphCache* cache = ac.getCache();
SkFixed w = 0;
SkFixed limit = SkScalarToFixed(margin);
SkAutoKern autokern;
const char* word_start = text;
int prevWS = true;
while (text < stop)
{
const char* prevText = text;
SkUnichar uni = SkUTF8_NextUnichar(&text);
int currWS = is_ws(uni);
const SkGlyph& glyph = cache->getUnicharMetrics(uni);
if (!currWS && prevWS)
word_start = prevText;
prevWS = currWS;
w += autokern.adjust(glyph) + glyph.fAdvanceX;
if (w > limit)
{
if (currWS) // eat the rest of the whitespace
{
while (text < stop && is_ws(SkUTF8_ToUnichar(text)))
text += SkUTF8_CountUTF8Bytes(text);
}
else // backup until a whitespace (or 1 char)
{
if (word_start == start)
{
if (prevText > start)
text = prevText;
}
else
text = word_start;
}
break;
}
}
return text - start;
}
SkGradientShaderBase::SkGradientShaderBase(const Descriptor& desc, const SkMatrix& ptsToUnit)
: INHERITED(desc.fLocalMatrix)
, fPtsToUnit(ptsToUnit)
{
fPtsToUnit.getType(); // Precache so reads are threadsafe.
SkASSERT(desc.fCount > 1);
fGradFlags = SkToU8(desc.fGradFlags);
SkASSERT((unsigned)desc.fTileMode < SkShader::kTileModeCount);
SkASSERT(SkShader::kTileModeCount == SK_ARRAY_COUNT(gTileProcs));
fTileMode = desc.fTileMode;
fTileProc = gTileProcs[desc.fTileMode];
/* Note: we let the caller skip the first and/or last position.
i.e. pos[0] = 0.3, pos[1] = 0.7
In these cases, we insert dummy entries to ensure that the final data
will be bracketed by [0, 1].
i.e. our_pos[0] = 0, our_pos[1] = 0.3, our_pos[2] = 0.7, our_pos[3] = 1
Thus colorCount (the caller's value, and fColorCount (our value) may
differ by up to 2. In the above example:
colorCount = 2
fColorCount = 4
*/
fColorCount = desc.fCount;
// check if we need to add in dummy start and/or end position/colors
bool dummyFirst = false;
bool dummyLast = false;
if (desc.fPos) {
dummyFirst = desc.fPos[0] != 0;
dummyLast = desc.fPos[desc.fCount - 1] != SK_Scalar1;
fColorCount += dummyFirst + dummyLast;
}
if (fColorCount > kColorStorageCount) {
size_t size = sizeof(SkColor) + sizeof(Rec);
if (desc.fPos) {
size += sizeof(SkScalar);
}
fOrigColors = reinterpret_cast<SkColor*>(
sk_malloc_throw(size * fColorCount));
}
else {
fOrigColors = fStorage;
}
// Now copy over the colors, adding the dummies as needed
{
SkColor* origColors = fOrigColors;
if (dummyFirst) {
*origColors++ = desc.fColors[0];
}
memcpy(origColors, desc.fColors, desc.fCount * sizeof(SkColor));
if (dummyLast) {
origColors += desc.fCount;
*origColors = desc.fColors[desc.fCount - 1];
}
}
if (desc.fPos && fColorCount) {
fOrigPos = (SkScalar*)(fOrigColors + fColorCount);
fRecs = (Rec*)(fOrigPos + fColorCount);
} else {
fOrigPos = nullptr;
fRecs = (Rec*)(fOrigColors + fColorCount);
}
if (fColorCount > 2) {
Rec* recs = fRecs;
recs->fPos = 0;
// recs->fScale = 0; // unused;
recs += 1;
if (desc.fPos) {
SkScalar* origPosPtr = fOrigPos;
*origPosPtr++ = 0;
/* We need to convert the user's array of relative positions into
fixed-point positions and scale factors. We need these results
to be strictly monotonic (no two values equal or out of order).
Hence this complex loop that just jams a zero for the scale
value if it sees a segment out of order, and it assures that
we start at 0 and end at 1.0
*/
SkScalar prev = 0;
int startIndex = dummyFirst ? 0 : 1;
int count = desc.fCount + dummyLast;
for (int i = startIndex; i < count; i++) {
// force the last value to be 1.0
SkScalar curr;
if (i == desc.fCount) { // we're really at the dummyLast
curr = 1;
} else {
curr = SkScalarPin(desc.fPos[i], 0, 1);
}
*origPosPtr++ = curr;
recs->fPos = SkScalarToFixed(curr);
SkFixed diff = SkScalarToFixed(curr - prev);
if (diff > 0) {
recs->fScale = (1 << 24) / diff;
} else {
recs->fScale = 0; // ignore this segment
}
// get ready for the next value
prev = curr;
recs += 1;
}
} else { // assume even distribution
fOrigPos = nullptr;
SkFixed dp = SK_Fixed1 / (desc.fCount - 1);
SkFixed p = dp;
SkFixed scale = (desc.fCount - 1) << 8; // (1 << 24) / dp
for (int i = 1; i < desc.fCount - 1; i++) {
recs->fPos = p;
recs->fScale = scale;
recs += 1;
p += dp;
}
recs->fPos = SK_Fixed1;
recs->fScale = scale;
}
} else if (desc.fPos) {
SkASSERT(2 == fColorCount);
fOrigPos[0] = SkScalarPin(desc.fPos[0], 0, 1);
fOrigPos[1] = SkScalarPin(desc.fPos[1], fOrigPos[0], 1);
if (0 == fOrigPos[0] && 1 == fOrigPos[1]) {
fOrigPos = nullptr;
}
}
this->initCommon();
}
virtual void flatten(SkFlattenableWriteBuffer& b) {
// this->INHERITED::flatten(b); How can we know if this is legal????
b.write32(SkScalarToFixed(fExp));
}
static hb_position_t SkiaScalarToHarfBuzzPosition(SkScalar value)
{
return SkScalarToFixed(value);
}
SkGradientShaderBase::SkGradientShaderBase(const SkColor colors[], const SkScalar pos[],
int colorCount, SkShader::TileMode mode, SkUnitMapper* mapper) {
SkASSERT(colorCount > 1);
fCacheAlpha = 256; // init to a value that paint.getAlpha() can't return
fMapper = mapper;
SkSafeRef(mapper);
SkASSERT((unsigned)mode < SkShader::kTileModeCount);
SkASSERT(SkShader::kTileModeCount == SK_ARRAY_COUNT(gTileProcs));
fTileMode = mode;
fTileProc = gTileProcs[mode];
fCache16 = fCache16Storage = NULL;
fCache32 = NULL;
fCache32PixelRef = NULL;
/* Note: we let the caller skip the first and/or last position.
i.e. pos[0] = 0.3, pos[1] = 0.7
In these cases, we insert dummy entries to ensure that the final data
will be bracketed by [0, 1].
i.e. our_pos[0] = 0, our_pos[1] = 0.3, our_pos[2] = 0.7, our_pos[3] = 1
Thus colorCount (the caller's value, and fColorCount (our value) may
differ by up to 2. In the above example:
colorCount = 2
fColorCount = 4
*/
fColorCount = colorCount;
// check if we need to add in dummy start and/or end position/colors
bool dummyFirst = false;
bool dummyLast = false;
if (pos) {
dummyFirst = pos[0] != 0;
dummyLast = pos[colorCount - 1] != SK_Scalar1;
fColorCount += dummyFirst + dummyLast;
}
if (fColorCount > kColorStorageCount) {
size_t size = sizeof(SkColor) + sizeof(Rec);
fOrigColors = reinterpret_cast<SkColor*>(
sk_malloc_throw(size * fColorCount));
}
else {
fOrigColors = fStorage;
}
// Now copy over the colors, adding the dummies as needed
{
SkColor* origColors = fOrigColors;
if (dummyFirst) {
*origColors++ = colors[0];
}
memcpy(origColors, colors, colorCount * sizeof(SkColor));
if (dummyLast) {
origColors += colorCount;
*origColors = colors[colorCount - 1];
}
}
fRecs = (Rec*)(fOrigColors + fColorCount);
if (fColorCount > 2) {
Rec* recs = fRecs;
recs->fPos = 0;
// recs->fScale = 0; // unused;
recs += 1;
if (pos) {
/* We need to convert the user's array of relative positions into
fixed-point positions and scale factors. We need these results
to be strictly monotonic (no two values equal or out of order).
Hence this complex loop that just jams a zero for the scale
value if it sees a segment out of order, and it assures that
we start at 0 and end at 1.0
*/
SkFixed prev = 0;
int startIndex = dummyFirst ? 0 : 1;
int count = colorCount + dummyLast;
for (int i = startIndex; i < count; i++) {
// force the last value to be 1.0
SkFixed curr;
if (i == colorCount) { // we're really at the dummyLast
curr = SK_Fixed1;
} else {
curr = SkScalarToFixed(pos[i]);
}
// pin curr withing range
if (curr < 0) {
curr = 0;
} else if (curr > SK_Fixed1) {
curr = SK_Fixed1;
}
recs->fPos = curr;
if (curr > prev) {
recs->fScale = (1 << 24) / (curr - prev);
} else {
recs->fScale = 0; // ignore this segment
}
// get ready for the next value
prev = curr;
recs += 1;
}
} else { // assume even distribution
SkFixed dp = SK_Fixed1 / (colorCount - 1);
SkFixed p = dp;
SkFixed scale = (colorCount - 1) << 8; // (1 << 24) / dp
for (int i = 1; i < colorCount; i++) {
recs->fPos = p;
recs->fScale = scale;
recs += 1;
p += dp;
}
}
}
this->initCommon();
}
SkScalerContext_FreeType::SkScalerContext_FreeType(const SkDescriptor* desc)
: SkScalerContext(desc), fFTSize(NULL) {
SkAutoMutexAcquire ac(gFTMutex);
FT_Error err;
if (gFTCount == 0) {
err = FT_Init_FreeType(&gFTLibrary);
// SkDEBUGF(("FT_Init_FreeType returned %d\n", err));
SkASSERT(err == 0);
}
++gFTCount;
// load the font file
fFaceRec = ref_ft_face(fRec.fFontID);
fFace = fFaceRec ? fFaceRec->fFace : NULL;
// compute our factors from the record
SkMatrix m;
fRec.getSingleMatrix(&m);
#ifdef DUMP_STRIKE_CREATION
SkString keyString;
SkFontHost::GetDescriptorKeyString(desc, &keyString);
printf("========== strike [%g %g %g] [%g %g %g %g] hints %d format %d %s\n", SkScalarToFloat(fRec.fTextSize),
SkScalarToFloat(fRec.fPreScaleX), SkScalarToFloat(fRec.fPreSkewX),
SkScalarToFloat(fRec.fPost2x2[0][0]), SkScalarToFloat(fRec.fPost2x2[0][1]),
SkScalarToFloat(fRec.fPost2x2[1][0]), SkScalarToFloat(fRec.fPost2x2[1][1]),
fRec.fHints, fRec.fMaskFormat, keyString.c_str());
#endif
// now compute our scale factors
SkScalar sx = m.getScaleX();
SkScalar sy = m.getScaleY();
if (m.getSkewX() || m.getSkewY() || sx < 0 || sy < 0) {
// sort of give up on hinting
sx = SkMaxScalar(SkScalarAbs(sx), SkScalarAbs(m.getSkewX()));
sy = SkMaxScalar(SkScalarAbs(m.getSkewY()), SkScalarAbs(sy));
sx = sy = SkScalarAve(sx, sy);
SkScalar inv = SkScalarInvert(sx);
// flip the skew elements to go from our Y-down system to FreeType's
fMatrix22.xx = SkScalarToFixed(SkScalarMul(m.getScaleX(), inv));
fMatrix22.xy = -SkScalarToFixed(SkScalarMul(m.getSkewX(), inv));
fMatrix22.yx = -SkScalarToFixed(SkScalarMul(m.getSkewY(), inv));
fMatrix22.yy = SkScalarToFixed(SkScalarMul(m.getScaleY(), inv));
} else {
fMatrix22.xx = fMatrix22.yy = SK_Fixed1;
fMatrix22.xy = fMatrix22.yx = 0;
}
fScaleX = SkScalarToFixed(sx);
fScaleY = SkScalarToFixed(sy);
// compute the flags we send to Load_Glyph
{
uint32_t flags = FT_LOAD_DEFAULT;
uint32_t render_flags = FT_LOAD_TARGET_NORMAL;
// we force autohinting at the moment
switch (fRec.fHints) {
case kNo_Hints:
flags |= FT_LOAD_NO_HINTING;
break;
case kSubpixel_Hints:
flags |= FT_LOAD_FORCE_AUTOHINT;
render_flags = FT_LOAD_TARGET_LIGHT;
break;
case kNormal_Hints:
flags |= FT_LOAD_FORCE_AUTOHINT;
#ifdef ANDROID
/* Switch to light hinting (vertical only) to address some chars
that behaved poorly with NORMAL. In the future we could consider
making this choice exposed at runtime to the caller.
*/
render_flags = FT_LOAD_TARGET_LIGHT;
#endif
break;
}
if (SkMask::kBW_Format == fRec.fMaskFormat)
render_flags = FT_LOAD_TARGET_MONO;
else if (SkMask::kLCD_Format == fRec.fMaskFormat)
render_flags = FT_LOAD_TARGET_LCD;
fLoadGlyphFlags = flags | render_flags;
}
// now create the FT_Size
{
FT_Error err;
err = FT_New_Size(fFace, &fFTSize);
if (err != 0) {
SkDEBUGF(("SkScalerContext_FreeType::FT_New_Size(%x): FT_Set_Char_Size(0x%x, 0x%x) returned 0x%x\n",
fFaceRec->fFontID, fScaleX, fScaleY, err));
fFace = NULL;
return;
}
err = FT_Activate_Size(fFTSize);
if (err != 0) {
SkDEBUGF(("SkScalerContext_FreeType::FT_Activate_Size(%x, 0x%x, 0x%x) returned 0x%x\n",
fFaceRec->fFontID, fScaleX, fScaleY, err));
fFTSize = NULL;
}
err = FT_Set_Char_Size( fFace,
SkFixedToFDot6(fScaleX), SkFixedToFDot6(fScaleY),
72, 72);
if (err != 0) {
SkDEBUGF(("SkScalerContext_FreeType::FT_Set_Char_Size(%x, 0x%x, 0x%x) returned 0x%x\n",
fFaceRec->fFontID, fScaleX, fScaleY, err));
fFace = NULL;
return;
}
FT_Set_Transform( fFace, &fMatrix22, NULL);
}
}
/*
* Analyze filter-quality and matrix, and decide how to implement that.
*
* In general, we cascade down the request level [ High ... None ]
* - for a given level, if we can fulfill it, fine, else
* - else we downgrade to the next lower level and try again.
* We can always fulfill requests for Low and None
* - sometimes we will "ignore" Low and give None, but this is likely a legacy perf hack
* and may be removed.
*/
bool SkBitmapProcState::chooseProcs(const SkMatrix& inv, const SkPaint& paint) {
fPixmap.reset();
fInvMatrix = inv;
fFilterLevel = paint.getFilterQuality();
const int origW = fProvider.info().width();
const int origH = fProvider.info().height();
bool allow_ignore_fractional_translate = true; // historical default
if (kMedium_SkFilterQuality == fFilterLevel) {
allow_ignore_fractional_translate = false;
}
SkDefaultBitmapController controller;
fBMState = controller.requestBitmap(fProvider, inv, paint.getFilterQuality(),
fBMStateStorage.get(), fBMStateStorage.size());
// Note : we allow the controller to return an empty (zero-dimension) result. Should we?
if (nullptr == fBMState || fBMState->pixmap().info().isEmpty()) {
return false;
}
fPixmap = fBMState->pixmap();
fInvMatrix = fBMState->invMatrix();
fFilterLevel = fBMState->quality();
SkASSERT(fPixmap.addr());
bool trivialMatrix = (fInvMatrix.getType() & ~SkMatrix::kTranslate_Mask) == 0;
bool clampClamp = SkShader::kClamp_TileMode == fTileModeX &&
SkShader::kClamp_TileMode == fTileModeY;
// Most of the scanline procs deal with "unit" texture coordinates, as this
// makes it easy to perform tiling modes (repeat = (x & 0xFFFF)). To generate
// those, we divide the matrix by its dimensions here.
//
// We don't do this if we're either trivial (can ignore the matrix) or clamping
// in both X and Y since clamping to width,height is just as easy as to 0xFFFF.
if (!(clampClamp || trivialMatrix)) {
fInvMatrix.postIDiv(fPixmap.width(), fPixmap.height());
}
// Now that all possible changes to the matrix have taken place, check
// to see if we're really close to a no-scale matrix. If so, explicitly
// set it to be so. Subsequent code may inspect this matrix to choose
// a faster path in this case.
// This code will only execute if the matrix has some scale component;
// if it's already pure translate then we won't do this inversion.
if (matrix_only_scale_translate(fInvMatrix)) {
SkMatrix forward;
if (fInvMatrix.invert(&forward)) {
if ((clampClamp && allow_ignore_fractional_translate)
? just_trans_clamp(forward, fPixmap)
: just_trans_general(forward)) {
fInvMatrix.setTranslate(-forward.getTranslateX(), -forward.getTranslateY());
}
}
}
fInvProc = fInvMatrix.getMapXYProc();
fInvType = fInvMatrix.getType();
fInvSx = SkScalarToFixed(fInvMatrix.getScaleX());
fInvSxFractionalInt = SkScalarToFractionalInt(fInvMatrix.getScaleX());
fInvKy = SkScalarToFixed(fInvMatrix.getSkewY());
fInvKyFractionalInt = SkScalarToFractionalInt(fInvMatrix.getSkewY());
fAlphaScale = SkAlpha255To256(paint.getAlpha());
fShaderProc32 = nullptr;
fShaderProc16 = nullptr;
fSampleProc32 = nullptr;
// recompute the triviality of the matrix here because we may have
// changed it!
trivialMatrix = (fInvMatrix.getType() & ~SkMatrix::kTranslate_Mask) == 0;
// If our target pixmap is the same as the original, then we revert back to legacy behavior
// and allow the code to ignore fractional translate.
//
// The width/height check allows allow_ignore_fractional_translate to stay false if we
// previously set it that way (e.g. we started in kMedium).
//
if (fPixmap.width() == origW && fPixmap.height() == origH) {
allow_ignore_fractional_translate = true;
}
if (kLow_SkFilterQuality == fFilterLevel && allow_ignore_fractional_translate) {
// Only try bilerp if the matrix is "interesting" and
// the image has a suitable size.
if (fInvType <= SkMatrix::kTranslate_Mask ||
!valid_for_filtering(fPixmap.width() | fPixmap.height()))
{
fFilterLevel = kNone_SkFilterQuality;
}
}
return this->chooseScanlineProcs(trivialMatrix, clampClamp, paint);
}
void GrStencilAndCoverTextContext::onDrawText(GrDrawContext* drawContext, GrRenderTarget* rt,
const GrClip& clip,
const GrPaint& paint,
const SkPaint& skPaint,
const SkMatrix& viewMatrix,
const char text[],
size_t byteLength,
SkScalar x, SkScalar y,
const SkIRect& regionClipBounds) {
SkASSERT(byteLength == 0 || text != NULL);
if (text == NULL || byteLength == 0 /*|| fRC->isEmpty()*/) {
return;
}
// This is the slow path, mainly used by Skia unit tests. The other
// backends (8888, gpu, ...) use device-space dependent glyph caches. In
// order to match the glyph positions that the other code paths produce, we
// must also use device-space dependent glyph cache. This has the
// side-effect that the glyph shape outline will be in device-space,
// too. This in turn has the side-effect that NVPR can not stroke the paths,
// as the stroke in NVPR is defined in object-space.
// NOTE: here we have following coincidence that works at the moment:
// - When using the device-space glyphs, the transforms we pass to NVPR
// instanced drawing are the global transforms, and the view transform is
// identity. NVPR can not use non-affine transforms in the instanced
// drawing. This is taken care of by SkDraw::ShouldDrawTextAsPaths since it
// will turn off the use of device-space glyphs when perspective transforms
// are in use.
this->init(rt, clip, paint, skPaint, byteLength, kMaxAccuracy_RenderMode, viewMatrix,
regionClipBounds);
// Transform our starting point.
if (fUsingDeviceSpaceGlyphs) {
SkPoint loc;
fContextInitialMatrix.mapXY(x, y, &loc);
x = loc.fX;
y = loc.fY;
}
SkDrawCacheProc glyphCacheProc = fSkPaint.getDrawCacheProc();
const char* stop = text + byteLength;
// Measure first if needed.
if (fSkPaint.getTextAlign() != SkPaint::kLeft_Align) {
SkFixed stopX = 0;
SkFixed stopY = 0;
const char* textPtr = text;
while (textPtr < stop) {
// We don't need x, y here, since all subpixel variants will have the
// same advance.
const SkGlyph& glyph = glyphCacheProc(fGlyphCache, &textPtr, 0, 0);
stopX += glyph.fAdvanceX;
stopY += glyph.fAdvanceY;
}
SkASSERT(textPtr == stop);
SkScalar alignX = SkFixedToScalar(stopX) * fTextRatio;
SkScalar alignY = SkFixedToScalar(stopY) * fTextRatio;
if (fSkPaint.getTextAlign() == SkPaint::kCenter_Align) {
alignX = SkScalarHalf(alignX);
alignY = SkScalarHalf(alignY);
}
x -= alignX;
y -= alignY;
}
SkAutoKern autokern;
SkFixed fixedSizeRatio = SkScalarToFixed(fTextRatio);
SkFixed fx = SkScalarToFixed(x);
SkFixed fy = SkScalarToFixed(y);
while (text < stop) {
const SkGlyph& glyph = glyphCacheProc(fGlyphCache, &text, 0, 0);
fx += SkFixedMul(autokern.adjust(glyph), fixedSizeRatio);
if (glyph.fWidth) {
this->appendGlyph(drawContext, glyph,
SkPoint::Make(SkFixedToScalar(fx), SkFixedToScalar(fy)));
}
fx += SkFixedMul(glyph.fAdvanceX, fixedSizeRatio);
fy += SkFixedMul(glyph.fAdvanceY, fixedSizeRatio);
}
this->finish(drawContext);
}
static sk_sp<GrTextureProxy> create_profile_texture(GrProxyProvider* proxyProvider,
const SkRect& circle, float sigma,
float* solidRadius, float* textureRadius) {
float circleR = circle.width() / 2.0f;
if (circleR < SK_ScalarNearlyZero) {
return nullptr;
}
// Profile textures are cached by the ratio of sigma to circle radius and by the size of the
// profile texture (binned by powers of 2).
SkScalar sigmaToCircleRRatio = sigma / circleR;
// When sigma is really small this becomes a equivalent to convolving a Gaussian with a
// half-plane. Similarly, in the extreme high ratio cases circle becomes a point WRT to the
// Guassian and the profile texture is a just a Gaussian evaluation. However, we haven't yet
// implemented this latter optimization.
sigmaToCircleRRatio = SkTMin(sigmaToCircleRRatio, 8.f);
SkFixed sigmaToCircleRRatioFixed;
static const SkScalar kHalfPlaneThreshold = 0.1f;
bool useHalfPlaneApprox = false;
if (sigmaToCircleRRatio <= kHalfPlaneThreshold) {
useHalfPlaneApprox = true;
sigmaToCircleRRatioFixed = 0;
*solidRadius = circleR - 3 * sigma;
*textureRadius = 6 * sigma;
} else {
// Convert to fixed point for the key.
sigmaToCircleRRatioFixed = SkScalarToFixed(sigmaToCircleRRatio);
// We shave off some bits to reduce the number of unique entries. We could probably
// shave off more than we do.
sigmaToCircleRRatioFixed &= ~0xff;
sigmaToCircleRRatio = SkFixedToScalar(sigmaToCircleRRatioFixed);
sigma = circleR * sigmaToCircleRRatio;
*solidRadius = 0;
*textureRadius = circleR + 3 * sigma;
}
static const GrUniqueKey::Domain kDomain = GrUniqueKey::GenerateDomain();
GrUniqueKey key;
GrUniqueKey::Builder builder(&key, kDomain, 1);
builder[0] = sigmaToCircleRRatioFixed;
builder.finish();
sk_sp<GrTextureProxy> blurProfile =
proxyProvider->findOrCreateProxyByUniqueKey(key, kTopLeft_GrSurfaceOrigin);
if (!blurProfile) {
static constexpr int kProfileTextureWidth = 512;
GrSurfaceDesc texDesc;
texDesc.fOrigin = kTopLeft_GrSurfaceOrigin;
texDesc.fWidth = kProfileTextureWidth;
texDesc.fHeight = 1;
texDesc.fConfig = kAlpha_8_GrPixelConfig;
std::unique_ptr<uint8_t[]> profile(nullptr);
if (useHalfPlaneApprox) {
profile.reset(create_half_plane_profile(kProfileTextureWidth));
} else {
// Rescale params to the size of the texture we're creating.
SkScalar scale = kProfileTextureWidth / *textureRadius;
profile.reset(
create_circle_profile(sigma * scale, circleR * scale, kProfileTextureWidth));
}
blurProfile =
proxyProvider->createTextureProxy(texDesc, SkBudgeted::kYes, profile.get(), 0);
if (!blurProfile) {
return nullptr;
}
SkASSERT(blurProfile->origin() == kTopLeft_GrSurfaceOrigin);
proxyProvider->assignUniqueKeyToProxy(key, blurProfile.get());
}
return blurProfile;
}
fUnitInvMatrix = *m;
m = &fUnitInvMatrix;
}
SkScalar scale = SkFixedToScalar(SK_Fixed1 >> shift);
fUnitInvMatrix.postScale(scale, scale);
// now point here instead of fOrigBitmap
fBitmap = &fMipBitmap;
}
}
fInvMatrix = m;
fInvProc = m->getMapXYProc();
fInvType = m->getType();
fInvSx = SkScalarToFixed(m->getScaleX());
fInvKy = SkScalarToFixed(m->getSkewY());
fAlphaScale = SkAlpha255To256(paint.getAlpha());
// pick-up filtering from the paint, but only if the matrix is
// more complex than identity/translate (i.e. no need to pay the cost
// of filtering if we're not scaled etc.).
// note: we explicitly check inv, since m might be scaled due to unitinv
// trickery, but we don't want to see that for this test
fDoFilter = paint.isFilterBitmap() &&
(inv.getType() > SkMatrix::kTranslate_Mask &&
valid_for_filtering(fBitmap->width() | fBitmap->height()));
fShaderProc32 = NULL;
fShaderProc16 = NULL;
void GrStencilAndCoverTextContext::TextRun::setText(const char text[], size_t byteLength,
SkScalar x, SkScalar y) {
SkASSERT(byteLength == 0 || text != nullptr);
SkGlyphCache* glyphCache = this->getGlyphCache();
SkDrawCacheProc glyphCacheProc = fFont.getDrawCacheProc();
fTotalGlyphCount = fFont.countText(text, byteLength);
fInstanceData.reset(InstanceData::Alloc(GrPathRendering::kTranslate_PathTransformType,
fTotalGlyphCount));
const char* stop = text + byteLength;
// Measure first if needed.
if (fFont.getTextAlign() != SkPaint::kLeft_Align) {
SkFixed stopX = 0;
SkFixed stopY = 0;
const char* textPtr = text;
while (textPtr < stop) {
// We don't need x, y here, since all subpixel variants will have the
// same advance.
const SkGlyph& glyph = glyphCacheProc(glyphCache, &textPtr, 0, 0);
stopX += glyph.fAdvanceX;
stopY += glyph.fAdvanceY;
}
SkASSERT(textPtr == stop);
SkScalar alignX = SkFixedToScalar(stopX) * fTextRatio;
SkScalar alignY = SkFixedToScalar(stopY) * fTextRatio;
if (fFont.getTextAlign() == SkPaint::kCenter_Align) {
alignX = SkScalarHalf(alignX);
alignY = SkScalarHalf(alignY);
}
x -= alignX;
y -= alignY;
}
SkAutoKern autokern;
SkFixed fixedSizeRatio = SkScalarToFixed(fTextRatio);
SkFixed fx = SkScalarToFixed(x);
SkFixed fy = SkScalarToFixed(y);
FallbackBlobBuilder fallback;
while (text < stop) {
const SkGlyph& glyph = glyphCacheProc(glyphCache, &text, 0, 0);
fx += SkFixedMul(autokern.adjust(glyph), fixedSizeRatio);
if (glyph.fWidth) {
this->appendGlyph(glyph, SkPoint::Make(SkFixedToScalar(fx), SkFixedToScalar(fy)),
&fallback);
}
fx += SkFixedMul(glyph.fAdvanceX, fixedSizeRatio);
fy += SkFixedMul(glyph.fAdvanceY, fixedSizeRatio);
}
fFallbackTextBlob.reset(fallback.buildIfNeeded(&fFallbackGlyphCount));
}
bool SkBitmapProcState::chooseProcs(const SkMatrix& inv, const SkPaint& paint) {
SkASSERT(fOrigBitmap.width() && fOrigBitmap.height());
fBitmap = NULL;
fInvMatrix = inv;
fFilterLevel = paint.getFilterLevel();
// possiblyScaleImage will look to see if it can rescale the image as a
// preprocess; either by scaling up to the target size, or by selecting
// a nearby mipmap level. If it does, it will adjust the working
// matrix as well as the working bitmap. It may also adjust the filter
// quality to avoid re-filtering an already perfectly scaled image.
if (!this->possiblyScaleImage()) {
if (!this->lockBaseBitmap()) {
return false;
}
}
// The above logic should have always assigned fBitmap, but in case it
// didn't, we check for that now...
// TODO(dominikg): Ask humper@ if we can just use an SkASSERT(fBitmap)?
if (NULL == fBitmap) {
return false;
}
// If we are "still" kMedium_FilterLevel, then the request was not fulfilled by possiblyScale,
// so we downgrade to kLow (so the rest of the sniffing code can assume that)
if (SkPaint::kMedium_FilterLevel == fFilterLevel) {
fFilterLevel = SkPaint::kLow_FilterLevel;
}
bool trivialMatrix = (fInvMatrix.getType() & ~SkMatrix::kTranslate_Mask) == 0;
bool clampClamp = SkShader::kClamp_TileMode == fTileModeX &&
SkShader::kClamp_TileMode == fTileModeY;
if (!(fAdjustedMatrix || clampClamp || trivialMatrix)) {
fInvMatrix.postIDiv(fOrigBitmap.width(), fOrigBitmap.height());
}
// Now that all possible changes to the matrix have taken place, check
// to see if we're really close to a no-scale matrix. If so, explicitly
// set it to be so. Subsequent code may inspect this matrix to choose
// a faster path in this case.
// This code will only execute if the matrix has some scale component;
// if it's already pure translate then we won't do this inversion.
if (matrix_only_scale_translate(fInvMatrix)) {
SkMatrix forward;
if (fInvMatrix.invert(&forward)) {
if (clampClamp ? just_trans_clamp(forward, *fBitmap)
: just_trans_general(forward)) {
SkScalar tx = -SkScalarRoundToScalar(forward.getTranslateX());
SkScalar ty = -SkScalarRoundToScalar(forward.getTranslateY());
fInvMatrix.setTranslate(tx, ty);
}
}
}
fInvProc = fInvMatrix.getMapXYProc();
fInvType = fInvMatrix.getType();
fInvSx = SkScalarToFixed(fInvMatrix.getScaleX());
fInvSxFractionalInt = SkScalarToFractionalInt(fInvMatrix.getScaleX());
fInvKy = SkScalarToFixed(fInvMatrix.getSkewY());
fInvKyFractionalInt = SkScalarToFractionalInt(fInvMatrix.getSkewY());
fAlphaScale = SkAlpha255To256(paint.getAlpha());
fShaderProc32 = NULL;
fShaderProc16 = NULL;
fSampleProc32 = NULL;
fSampleProc16 = NULL;
// recompute the triviality of the matrix here because we may have
// changed it!
trivialMatrix = (fInvMatrix.getType() & ~SkMatrix::kTranslate_Mask) == 0;
if (SkPaint::kHigh_FilterLevel == fFilterLevel) {
// If this is still set, that means we wanted HQ sampling
// but couldn't do it as a preprocess. Let's try to install
// the scanline version of the HQ sampler. If that process fails,
// downgrade to bilerp.
// NOTE: Might need to be careful here in the future when we want
// to have the platform proc have a shot at this; it's possible that
// the chooseBitmapFilterProc will fail to install a shader but a
// platform-specific one might succeed, so it might be premature here
// to fall back to bilerp. This needs thought.
if (!this->setBitmapFilterProcs()) {
fFilterLevel = SkPaint::kLow_FilterLevel;
}
}
if (SkPaint::kLow_FilterLevel == fFilterLevel) {
// Only try bilerp if the matrix is "interesting" and
// the image has a suitable size.
if (fInvType <= SkMatrix::kTranslate_Mask ||
!valid_for_filtering(fBitmap->width() | fBitmap->height())) {
fFilterLevel = SkPaint::kNone_FilterLevel;
}
}
// At this point, we know exactly what kind of sampling the per-scanline
// shader will perform.
fMatrixProc = this->chooseMatrixProc(trivialMatrix);
// TODO(dominikg): SkASSERT(fMatrixProc) instead? chooseMatrixProc never returns NULL.
if (NULL == fMatrixProc) {
return false;
}
///////////////////////////////////////////////////////////////////////
const SkAlphaType at = fBitmap->alphaType();
// No need to do this if we're doing HQ sampling; if filter quality is
// still set to HQ by the time we get here, then we must have installed
// the shader procs above and can skip all this.
if (fFilterLevel < SkPaint::kHigh_FilterLevel) {
int index = 0;
if (fAlphaScale < 256) { // note: this distinction is not used for D16
index |= 1;
}
if (fInvType <= (SkMatrix::kTranslate_Mask | SkMatrix::kScale_Mask)) {
index |= 2;
}
if (fFilterLevel > SkPaint::kNone_FilterLevel) {
index |= 4;
}
// bits 3,4,5 encoding the source bitmap format
switch (fBitmap->colorType()) {
case kN32_SkColorType:
if (kPremul_SkAlphaType != at && kOpaque_SkAlphaType != at) {
return false;
}
index |= 0;
break;
case kRGB_565_SkColorType:
index |= 8;
break;
case kIndex_8_SkColorType:
if (kPremul_SkAlphaType != at && kOpaque_SkAlphaType != at) {
return false;
}
index |= 16;
break;
case kARGB_4444_SkColorType:
if (kPremul_SkAlphaType != at && kOpaque_SkAlphaType != at) {
return false;
}
index |= 24;
break;
case kAlpha_8_SkColorType:
index |= 32;
fPaintPMColor = SkPreMultiplyColor(paint.getColor());
break;
default:
// TODO(dominikg): Should we ever get here? SkASSERT(false) instead?
return false;
}
#if !SK_ARM_NEON_IS_ALWAYS
static const SampleProc32 gSkBitmapProcStateSample32[] = {
S32_opaque_D32_nofilter_DXDY,
S32_alpha_D32_nofilter_DXDY,
S32_opaque_D32_nofilter_DX,
S32_alpha_D32_nofilter_DX,
S32_opaque_D32_filter_DXDY,
S32_alpha_D32_filter_DXDY,
S32_opaque_D32_filter_DX,
S32_alpha_D32_filter_DX,
S16_opaque_D32_nofilter_DXDY,
S16_alpha_D32_nofilter_DXDY,
S16_opaque_D32_nofilter_DX,
S16_alpha_D32_nofilter_DX,
S16_opaque_D32_filter_DXDY,
S16_alpha_D32_filter_DXDY,
S16_opaque_D32_filter_DX,
S16_alpha_D32_filter_DX,
SI8_opaque_D32_nofilter_DXDY,
SI8_alpha_D32_nofilter_DXDY,
SI8_opaque_D32_nofilter_DX,
SI8_alpha_D32_nofilter_DX,
SI8_opaque_D32_filter_DXDY,
SI8_alpha_D32_filter_DXDY,
SI8_opaque_D32_filter_DX,
SI8_alpha_D32_filter_DX,
S4444_opaque_D32_nofilter_DXDY,
S4444_alpha_D32_nofilter_DXDY,
S4444_opaque_D32_nofilter_DX,
S4444_alpha_D32_nofilter_DX,
S4444_opaque_D32_filter_DXDY,
S4444_alpha_D32_filter_DXDY,
S4444_opaque_D32_filter_DX,
S4444_alpha_D32_filter_DX,
// A8 treats alpha/opaque the same (equally efficient)
SA8_alpha_D32_nofilter_DXDY,
SA8_alpha_D32_nofilter_DXDY,
SA8_alpha_D32_nofilter_DX,
SA8_alpha_D32_nofilter_DX,
SA8_alpha_D32_filter_DXDY,
SA8_alpha_D32_filter_DXDY,
SA8_alpha_D32_filter_DX,
SA8_alpha_D32_filter_DX
};
static const SampleProc16 gSkBitmapProcStateSample16[] = {
S32_D16_nofilter_DXDY,
S32_D16_nofilter_DX,
S32_D16_filter_DXDY,
S32_D16_filter_DX,
S16_D16_nofilter_DXDY,
S16_D16_nofilter_DX,
S16_D16_filter_DXDY,
S16_D16_filter_DX,
SI8_D16_nofilter_DXDY,
SI8_D16_nofilter_DX,
SI8_D16_filter_DXDY,
SI8_D16_filter_DX,
// Don't support 4444 -> 565
NULL, NULL, NULL, NULL,
// Don't support A8 -> 565
NULL, NULL, NULL, NULL
};
#endif
fSampleProc32 = SK_ARM_NEON_WRAP(gSkBitmapProcStateSample32)[index];
index >>= 1; // shift away any opaque/alpha distinction
fSampleProc16 = SK_ARM_NEON_WRAP(gSkBitmapProcStateSample16)[index];
// our special-case shaderprocs
if (SK_ARM_NEON_WRAP(S16_D16_filter_DX) == fSampleProc16) {
if (clampClamp) {
fShaderProc16 = SK_ARM_NEON_WRAP(Clamp_S16_D16_filter_DX_shaderproc);
} else if (SkShader::kRepeat_TileMode == fTileModeX &&
SkShader::kRepeat_TileMode == fTileModeY) {
fShaderProc16 = SK_ARM_NEON_WRAP(Repeat_S16_D16_filter_DX_shaderproc);
}
} else if (SK_ARM_NEON_WRAP(SI8_opaque_D32_filter_DX) == fSampleProc32 && clampClamp) {
fShaderProc32 = SK_ARM_NEON_WRAP(Clamp_SI8_opaque_D32_filter_DX_shaderproc);
}
if (NULL == fShaderProc32) {
fShaderProc32 = this->chooseShaderProc32();
}
}
SkScalerContext_FreeType::SkScalerContext_FreeType(const SkDescriptor* desc)
: SkScalerContext(desc) {
SkAutoMutexAcquire ac(gFTMutex);
if (gFTCount == 0) {
if (!InitFreetype()) {
sk_throw();
}
}
++gFTCount;
// load the font file
fFTSize = NULL;
fFace = NULL;
fFaceRec = ref_ft_face(fRec.fFontID);
if (NULL == fFaceRec) {
return;
}
fFace = fFaceRec->fFace;
// compute our factors from the record
SkMatrix m;
fRec.getSingleMatrix(&m);
#ifdef DUMP_STRIKE_CREATION
SkString keyString;
SkFontHost::GetDescriptorKeyString(desc, &keyString);
printf("========== strike [%g %g %g] [%g %g %g %g] hints %d format %d %s\n", SkScalarToFloat(fRec.fTextSize),
SkScalarToFloat(fRec.fPreScaleX), SkScalarToFloat(fRec.fPreSkewX),
SkScalarToFloat(fRec.fPost2x2[0][0]), SkScalarToFloat(fRec.fPost2x2[0][1]),
SkScalarToFloat(fRec.fPost2x2[1][0]), SkScalarToFloat(fRec.fPost2x2[1][1]),
fRec.getHinting(), fRec.fMaskFormat, keyString.c_str());
#endif
// now compute our scale factors
SkScalar sx = m.getScaleX();
SkScalar sy = m.getScaleY();
if (m.getSkewX() || m.getSkewY() || sx < 0 || sy < 0) {
// sort of give up on hinting
sx = SkMaxScalar(SkScalarAbs(sx), SkScalarAbs(m.getSkewX()));
sy = SkMaxScalar(SkScalarAbs(m.getSkewY()), SkScalarAbs(sy));
sx = sy = SkScalarAve(sx, sy);
SkScalar inv = SkScalarInvert(sx);
// flip the skew elements to go from our Y-down system to FreeType's
fMatrix22.xx = SkScalarToFixed(SkScalarMul(m.getScaleX(), inv));
fMatrix22.xy = -SkScalarToFixed(SkScalarMul(m.getSkewX(), inv));
fMatrix22.yx = -SkScalarToFixed(SkScalarMul(m.getSkewY(), inv));
fMatrix22.yy = SkScalarToFixed(SkScalarMul(m.getScaleY(), inv));
} else {
fMatrix22.xx = fMatrix22.yy = SK_Fixed1;
fMatrix22.xy = fMatrix22.yx = 0;
}
fScaleX = SkScalarToFixed(sx);
fScaleY = SkScalarToFixed(sy);
// compute the flags we send to Load_Glyph
{
FT_Int32 loadFlags = FT_LOAD_DEFAULT;
if (SkMask::kBW_Format == fRec.fMaskFormat) {
// See http://code.google.com/p/chromium/issues/detail?id=43252#c24
loadFlags = FT_LOAD_TARGET_MONO;
if (fRec.getHinting() == SkPaint::kNo_Hinting)
loadFlags = FT_LOAD_NO_HINTING;
} else {
switch (fRec.getHinting()) {
case SkPaint::kNo_Hinting:
loadFlags = FT_LOAD_NO_HINTING;
break;
case SkPaint::kSlight_Hinting:
loadFlags = FT_LOAD_TARGET_LIGHT; // This implies FORCE_AUTOHINT
break;
case SkPaint::kNormal_Hinting:
loadFlags = FT_LOAD_TARGET_NORMAL;
break;
case SkPaint::kFull_Hinting:
loadFlags = FT_LOAD_TARGET_NORMAL;
if (SkMask::kHorizontalLCD_Format == fRec.fMaskFormat)
loadFlags = FT_LOAD_TARGET_LCD;
else if (SkMask::kVerticalLCD_Format == fRec.fMaskFormat)
loadFlags = FT_LOAD_TARGET_LCD_V;
break;
default:
SkDebugf("---------- UNKNOWN hinting %d\n", fRec.getHinting());
break;
}
}
if ((fRec.fFlags & SkScalerContext::kEmbeddedBitmapText_Flag) == 0)
loadFlags |= FT_LOAD_NO_BITMAP;
fLoadGlyphFlags = loadFlags;
}
// now create the FT_Size
{
FT_Error err;
err = FT_New_Size(fFace, &fFTSize);
if (err != 0) {
SkDEBUGF(("SkScalerContext_FreeType::FT_New_Size(%x): FT_Set_Char_Size(0x%x, 0x%x) returned 0x%x\n",
fFaceRec->fFontID, fScaleX, fScaleY, err));
fFace = NULL;
return;
}
err = FT_Activate_Size(fFTSize);
if (err != 0) {
SkDEBUGF(("SkScalerContext_FreeType::FT_Activate_Size(%x, 0x%x, 0x%x) returned 0x%x\n",
fFaceRec->fFontID, fScaleX, fScaleY, err));
fFTSize = NULL;
}
err = FT_Set_Char_Size( fFace,
SkFixedToFDot6(fScaleX), SkFixedToFDot6(fScaleY),
72, 72);
if (err != 0) {
SkDEBUGF(("SkScalerContext_FreeType::FT_Set_Char_Size(%x, 0x%x, 0x%x) returned 0x%x\n",
fFaceRec->fFontID, fScaleX, fScaleY, err));
fFace = NULL;
return;
}
FT_Set_Transform( fFace, &fMatrix22, NULL);
}
}
