// Create a mask of 'devPath' and place the result in 'mask'.
static sk_sp<GrTexture> create_mask_GPU(GrContext* context,
const SkIRect& maskRect,
const SkPath& devPath,
SkStrokeRec::InitStyle fillOrHairline,
bool doAA,
int sampleCnt) {
if (!doAA) {
// Don't need MSAA if mask isn't AA
sampleCnt = 0;
}
// We actually only need A8, but it often isn't supported as a
// render target so default to RGBA_8888
GrPixelConfig config = kRGBA_8888_GrPixelConfig;
if (context->caps()->isConfigRenderable(kAlpha_8_GrPixelConfig, sampleCnt > 0)) {
config = kAlpha_8_GrPixelConfig;
}
sk_sp<GrDrawContext> drawContext(context->newDrawContext(SkBackingFit::kApprox,
maskRect.width(),
maskRect.height(),
config,
sampleCnt));
if (!drawContext) {
return nullptr;
}
drawContext->clear(nullptr, 0x0, true);
GrPaint tempPaint;
tempPaint.setAntiAlias(doAA);
tempPaint.setCoverageSetOpXPFactory(SkRegion::kReplace_Op);
// setup new clip
const SkIRect clipRect = SkIRect::MakeWH(maskRect.width(), maskRect.height());
GrFixedClip clip(clipRect);
// Draw the mask into maskTexture with the path's integerized top-left at
// the origin using tempPaint.
SkMatrix translate;
translate.setTranslate(-SkIntToScalar(maskRect.fLeft), -SkIntToScalar(maskRect.fTop));
drawContext->drawPath(clip, tempPaint, translate, devPath, GrStyle(fillOrHairline));
return drawContext->asTexture();;
}
void TestStyle(SkRandom* random, GrStyle* style) {
SkStrokeRec::InitStyle initStyle =
SkStrokeRec::InitStyle(random->nextULessThan(SkStrokeRec::kFill_InitStyle + 1));
SkStrokeRec stroke(initStyle);
randomize_stroke_rec(&stroke, random);
sk_sp<SkPathEffect> pe;
if (random->nextBool()) {
int cnt = random->nextRangeU(1, 50) * 2;
std::unique_ptr<SkScalar[]> intervals(new SkScalar[cnt]);
SkScalar sum = 0;
for (int i = 0; i < cnt; i++) {
intervals[i] = random->nextRangeScalar(SkDoubleToScalar(0.01),
SkDoubleToScalar(10.0));
sum += intervals[i];
}
SkScalar phase = random->nextRangeScalar(0, sum);
pe = TestDashPathEffect::Make(intervals.get(), cnt, phase);
}
*style = GrStyle(stroke, std::move(pe));
}
// Create a mask of 'devPath' and place the result in 'mask'.
static sk_sp<GrTexture> create_mask_GPU(GrContext* context,
const SkIRect& maskRect,
const SkPath& devPath,
SkStrokeRec::InitStyle fillOrHairline,
bool doAA,
int sampleCnt) {
if (!doAA) {
// Don't need MSAA if mask isn't AA
sampleCnt = 0;
}
sk_sp<GrDrawContext> drawContext(context->makeDrawContextWithFallback(SkBackingFit::kApprox,
maskRect.width(),
maskRect.height(),
kAlpha_8_GrPixelConfig,
nullptr,
sampleCnt));
if (!drawContext) {
return nullptr;
}
drawContext->clear(nullptr, 0x0, true);
GrPaint tempPaint;
tempPaint.setAntiAlias(doAA);
tempPaint.setCoverageSetOpXPFactory(SkRegion::kReplace_Op);
// setup new clip
const SkIRect clipRect = SkIRect::MakeWH(maskRect.width(), maskRect.height());
GrFixedClip clip(clipRect);
// Draw the mask into maskTexture with the path's integerized top-left at
// the origin using tempPaint.
SkMatrix translate;
translate.setTranslate(-SkIntToScalar(maskRect.fLeft), -SkIntToScalar(maskRect.fTop));
drawContext->drawPath(clip, tempPaint, translate, devPath, GrStyle(fillOrHairline));
return drawContext->asTexture();;
}
GrStencilAndCoverTextContext::TextRun::TextRun(const SkPaint& fontAndStroke)
: fStyle(fontAndStroke)
, fFont(fontAndStroke)
, fTotalGlyphCount(0)
, fFallbackGlyphCount(0)
, fDetachedGlyphCache(nullptr)
, fLastDrawnGlyphsID(SK_InvalidUniqueID) {
SkASSERT(fFont.getTextSize() > 0);
SkASSERT(!fStyle.hasNonDashPathEffect()); // Arbitrary path effects not supported.
SkASSERT(!fStyle.isSimpleHairline()); // Hairlines are not supported.
// Setting to "fill" ensures that no strokes get baked into font outlines. (We use the GPU path
// rendering API for stroking).
fFont.setStyle(SkPaint::kFill_Style);
if (fFont.isFakeBoldText() && fStyle.isSimpleFill()) {
const SkStrokeRec& stroke = fStyle.strokeRec();
// Instead of letting fake bold get baked into the glyph outlines, do it with GPU stroke.
SkScalar fakeBoldScale = SkScalarInterpFunc(fFont.getTextSize(),
kStdFakeBoldInterpKeys,
kStdFakeBoldInterpValues,
kStdFakeBoldInterpLength);
SkScalar extra = fFont.getTextSize() * fakeBoldScale;
SkStrokeRec strokeRec(SkStrokeRec::kFill_InitStyle);
strokeRec.setStrokeStyle(stroke.needToApply() ? stroke.getWidth() + extra : extra,
true /*strokeAndFill*/);
fStyle = GrStyle(strokeRec, fStyle.refPathEffect());
fFont.setFakeBoldText(false);
}
if (!fFont.getPathEffect() && !fStyle.isDashed()) {
const SkStrokeRec& stroke = fStyle.strokeRec();
// We can draw the glyphs from canonically sized paths.
fTextRatio = fFont.getTextSize() / SkPaint::kCanonicalTextSizeForPaths;
fTextInverseRatio = SkPaint::kCanonicalTextSizeForPaths / fFont.getTextSize();
// Compensate for the glyphs being scaled by fTextRatio.
if (!fStyle.isSimpleFill()) {
SkStrokeRec strokeRec(SkStrokeRec::kFill_InitStyle);
strokeRec.setStrokeStyle(stroke.getWidth() / fTextRatio,
SkStrokeRec::kStrokeAndFill_Style == stroke.getStyle());
fStyle = GrStyle(strokeRec, fStyle.refPathEffect());
}
fFont.setLinearText(true);
fFont.setLCDRenderText(false);
fFont.setAutohinted(false);
fFont.setHinting(SkPaint::kNo_Hinting);
fFont.setSubpixelText(true);
fFont.setTextSize(SkIntToScalar(SkPaint::kCanonicalTextSizeForPaths));
fUsingRawGlyphPaths = SK_Scalar1 == fFont.getTextScaleX() &&
0 == fFont.getTextSkewX() &&
!fFont.isFakeBoldText() &&
!fFont.isVerticalText();
} else {
fTextRatio = fTextInverseRatio = 1.0f;
fUsingRawGlyphPaths = false;
}
// Generate the key that will be used to cache the GPU glyph path objects.
if (fUsingRawGlyphPaths && fStyle.isSimpleFill()) {
static const GrUniqueKey::Domain kRawFillPathGlyphDomain = GrUniqueKey::GenerateDomain();
const SkTypeface* typeface = fFont.getTypeface();
GrUniqueKey::Builder builder(&fGlyphPathsKey, kRawFillPathGlyphDomain, 1);
reinterpret_cast<uint32_t&>(builder[0]) = typeface ? typeface->uniqueID() : 0;
} else {
static const GrUniqueKey::Domain kPathGlyphDomain = GrUniqueKey::GenerateDomain();
int styleDataCount = GrStyle::KeySize(fStyle, GrStyle::Apply::kPathEffectAndStrokeRec);
// Key should be valid since we opted out of drawing arbitrary path effects.
SkASSERT(styleDataCount >= 0);
if (fUsingRawGlyphPaths) {
const SkTypeface* typeface = fFont.getTypeface();
GrUniqueKey::Builder builder(&fGlyphPathsKey, kPathGlyphDomain, 2 + styleDataCount);
reinterpret_cast<uint32_t&>(builder[0]) = typeface ? typeface->uniqueID() : 0;
reinterpret_cast<uint32_t&>(builder[1]) = styleDataCount;
if (styleDataCount) {
write_style_key(&builder[2], fStyle);
}
} else {
SkGlyphCache* glyphCache = this->getGlyphCache();
const SkTypeface* typeface = glyphCache->getScalerContext()->getTypeface();
const SkDescriptor* desc = &glyphCache->getDescriptor();
int descDataCount = (desc->getLength() + 3) / 4;
GrUniqueKey::Builder builder(&fGlyphPathsKey, kPathGlyphDomain,
2 + styleDataCount + descDataCount);
reinterpret_cast<uint32_t&>(builder[0]) = typeface ? typeface->uniqueID() : 0;
reinterpret_cast<uint32_t&>(builder[1]) = styleDataCount | (descDataCount << 16);
if (styleDataCount) {
write_style_key(&builder[2], fStyle);
}
memcpy(&builder[2 + styleDataCount], desc, desc->getLength());
}
}
}
