void GrTextBlob::flush(GrTextTarget* target, const SkSurfaceProps& props,
const GrDistanceFieldAdjustTable* distanceAdjustTable,
const SkPaint& paint, GrColor filteredColor, const GrClip& clip,
const SkMatrix& viewMatrix, SkScalar x, SkScalar y) {
// GrTextBlob::makeOp only takes uint16_t values for run and subRun indices.
// Encountering something larger than this is highly unlikely, so we'll just not draw it.
int lastRun = SkTMin(fRunCount, (1 << 16)) - 1;
// For each run in the GrTextBlob we're going to churn through all the glyphs.
// Each run is broken into a path part and a Mask / DFT / ARGB part.
for (int runIndex = 0; runIndex <= lastRun; runIndex++) {
Run& run = fRuns[runIndex];
// first flush any path glyphs
if (run.fPathGlyphs.count()) {
SkPaint runPaint{paint};
runPaint.setFlags((runPaint.getFlags() & ~Run::kPaintFlagsMask) | run.fPaintFlags);
for (int i = 0; i < run.fPathGlyphs.count(); i++) {
GrTextBlob::Run::PathGlyph& pathGlyph = run.fPathGlyphs[i];
SkMatrix ctm;
const SkPath* path = &pathGlyph.fPath;
// TmpPath must be in the same scope as GrShape shape below.
SkTLazy<SkPath> tmpPath;
// The glyph positions and glyph outlines are either in device space or in source
// space based on fPreTransformed.
if (!pathGlyph.fPreTransformed) {
// Positions and outlines are in source space.
ctm = viewMatrix;
SkMatrix pathMatrix = SkMatrix::MakeScale(pathGlyph.fScale, pathGlyph.fScale);
// The origin for the blob may have changed, so figure out the delta.
SkVector originShift = SkPoint{x, y} - SkPoint{fInitialX, fInitialY};
// Shift the original glyph location in source space to the position of the new
// blob.
pathMatrix.postTranslate(originShift.x() + pathGlyph.fX,
originShift.y() + pathGlyph.fY);
// If there are shaders, blurs or styles, the path must be scaled into source
// space independently of the CTM. This allows the CTM to be correct for the
// different effects.
GrStyle style(runPaint);
bool scalePath = runPaint.getShader()
|| style.applies()
|| runPaint.getMaskFilter();
if (!scalePath) {
// Scale can be applied to CTM -- no effects.
ctm.preConcat(pathMatrix);
} else {
// Scale the outline into source space.
// Transform the path form the normalized outline to source space. This
// way the CTM will remain the same so it can be used by the effects.
SkPath* sourceOutline = tmpPath.init();
path->transform(pathMatrix, sourceOutline);
sourceOutline->setIsVolatile(true);
path = sourceOutline;
}
} else {
// Positions and outlines are in device space.
SkPoint originalOrigin = {fInitialX, fInitialY};
fInitialViewMatrix.mapPoints(&originalOrigin, 1);
SkPoint newOrigin = {x, y};
viewMatrix.mapPoints(&newOrigin, 1);
// The origin shift in device space.
SkPoint originShift = newOrigin - originalOrigin;
// Shift the original glyph location in device space to the position of the
// new blob.
ctm = SkMatrix::MakeTrans(originShift.x() + pathGlyph.fX,
originShift.y() + pathGlyph.fY);
}
// TODO: we are losing the mutability of the path here
GrShape shape(*path, paint);
target->drawShape(clip, runPaint, ctm, shape);
}
}
// then flush each subrun, if any
if (!run.fInitialized) {
continue;
}
int lastSubRun = SkTMin(run.fSubRunInfo.count(), 1 << 16) - 1;
for (int subRun = 0; subRun <= lastSubRun; subRun++) {
const Run::SubRunInfo& info = run.fSubRunInfo[subRun];
int glyphCount = info.glyphCount();
if (0 == glyphCount) {
continue;
}
bool skipClip = false;
bool submitOp = true;
SkIRect clipRect = SkIRect::MakeEmpty();
SkRect rtBounds = SkRect::MakeWH(target->width(), target->height());
SkRRect clipRRect;
GrAA aa;
// We can clip geometrically if we're not using SDFs or transformed glyphs,
// and we have an axis-aligned rectangular non-AA clip
if (!info.drawAsDistanceFields() && !info.needsTransform() &&
clip.isRRect(rtBounds, &clipRRect, &aa) &&
clipRRect.isRect() && GrAA::kNo == aa) {
skipClip = true;
// We only need to do clipping work if the subrun isn't contained by the clip
SkRect subRunBounds;
this->computeSubRunBounds(&subRunBounds, runIndex, subRun, viewMatrix, x, y,
false);
if (!clipRRect.getBounds().contains(subRunBounds)) {
// If the subrun is completely outside, don't add an op for it
if (!clipRRect.getBounds().intersects(subRunBounds)) {
submitOp = false;
}
else {
clipRRect.getBounds().round(&clipRect);
}
}
}
if (submitOp) {
auto op = this->makeOp(info, glyphCount, runIndex, subRun, viewMatrix, x, y,
clipRect, paint, filteredColor, props, distanceAdjustTable,
target);
if (op) {
if (skipClip) {
target->addDrawOp(GrNoClip(), std::move(op));
}
else {
target->addDrawOp(clip, std::move(op));
}
}
}
}
}
}
