bool GrAADistanceFieldPathRenderer::onDrawPath(const DrawPathArgs& args) {
GR_AUDIT_TRAIL_AUTO_FRAME(args.fDrawContext->auditTrail(),
"GrAADistanceFieldPathRenderer::onDrawPath");
SkASSERT(!args.fDrawContext->isUnifiedMultisampled());
SkASSERT(args.fShape->style().isSimpleFill());
// we've already bailed on inverse filled paths, so this is safe
SkASSERT(!args.fShape->isEmpty());
SkASSERT(args.fShape->hasUnstyledKey());
if (!fAtlas) {
fAtlas = args.fResourceProvider->createAtlas(kAlpha_8_GrPixelConfig,
ATLAS_TEXTURE_WIDTH, ATLAS_TEXTURE_HEIGHT,
NUM_PLOTS_X, NUM_PLOTS_Y,
&GrAADistanceFieldPathRenderer::HandleEviction,
(void*)this);
if (!fAtlas) {
return false;
}
}
SkAutoTUnref<GrDrawBatch> batch(new AADistanceFieldPathBatch(args.fPaint->getColor(),
*args.fShape,
args.fAntiAlias, *args.fViewMatrix,
fAtlas, &fShapeCache, &fShapeList,
args.fGammaCorrect));
GrPipelineBuilder pipelineBuilder(*args.fPaint);
pipelineBuilder.setUserStencil(args.fUserStencilSettings);
args.fDrawContext->drawBatch(pipelineBuilder, *args.fClip, batch);
return true;
}
void GrStencilAndCoverTextContext::drawText(GrContext* context, GrDrawContext* dc,
const GrClip& clip, const GrPaint& paint,
const SkPaint& skPaint, const SkMatrix& viewMatrix,
const SkSurfaceProps& props,
const char text[], size_t byteLength,
SkScalar x, SkScalar y, const SkIRect& clipBounds) {
if (context->abandoned()) {
return;
} else if (this->canDraw(skPaint, viewMatrix)) {
TextRun run(skPaint);
GrPipelineBuilder pipelineBuilder(paint, dc->accessRenderTarget(), clip);
run.setText(text, byteLength, x, y);
run.draw(context, dc, &pipelineBuilder, paint.getColor(), viewMatrix, props, 0, 0,
clipBounds, fFallbackTextContext, skPaint);
return;
} else if (fFallbackTextContext->canDraw(skPaint, viewMatrix, props,
*context->caps()->shaderCaps())) {
fFallbackTextContext->drawText(context, dc, clip, paint, skPaint, viewMatrix, props, text,
byteLength, x, y, clipBounds);
return;
}
// fall back to drawing as a path
GrTextUtils::DrawTextAsPath(context, dc, clip, skPaint, viewMatrix, text, byteLength, x, y,
clipBounds);
}
void GrStencilAndCoverTextContext::flush() {
if (fQueuedGlyphCount > 0) {
SkAutoTUnref<GrPathProcessor> pp(GrPathProcessor::Create(fPaint.getColor(),
fViewMatrix,
fLocalMatrix));
// We should only be flushing about once every run. However, if this impacts performance
// we could move the creation of the GrPipelineBuilder earlier.
GrPipelineBuilder pipelineBuilder(fPaint, fRenderTarget, fClip);
SkASSERT(fRenderTarget->isStencilBufferMultisampled() || !fPaint.isAntiAlias());
pipelineBuilder.setState(GrPipelineBuilder::kHWAntialias_Flag, fPaint.isAntiAlias());
GR_STATIC_CONST_SAME_STENCIL(kStencilPass,
kZero_StencilOp,
kZero_StencilOp,
kNotEqual_StencilFunc,
0xffff,
0x0000,
0xffff);
*pipelineBuilder.stencil() = kStencilPass;
SkASSERT(0 == fQueuedGlyphCount);
SkASSERT(kGlyphBufferSize == fFallbackGlyphsIdx);
fDrawContext->drawPaths(&pipelineBuilder, pp, fGlyphs,
fGlyphIndices, GrPathRange::kU16_PathIndexType,
get_xy_scalar_array(fGlyphPositions),
GrPathRendering::kTranslate_PathTransformType,
fQueuedGlyphCount, GrPathRendering::kWinding_FillType);
fQueuedGlyphCount = 0;
}
if (fFallbackGlyphsIdx < kGlyphBufferSize) {
int fallbackGlyphCount = kGlyphBufferSize - fFallbackGlyphsIdx;
GrPaint paintFallback(fPaint);
SkPaint skPaintFallback(fSkPaint);
if (!fUsingDeviceSpaceGlyphs) {
fStroke.applyToPaint(&skPaintFallback);
}
skPaintFallback.setTextAlign(SkPaint::kLeft_Align); // Align has already been accounted for.
skPaintFallback.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
SkMatrix inverse;
if (this->mapToFallbackContext(&inverse)) {
inverse.mapPoints(&fGlyphPositions[fFallbackGlyphsIdx], fallbackGlyphCount);
}
fFallbackTextContext->drawPosText(fRenderTarget, fClip, paintFallback, skPaintFallback,
fViewMatrix, (char*)&fGlyphIndices[fFallbackGlyphsIdx],
2 * fallbackGlyphCount,
get_xy_scalar_array(&fGlyphPositions[fFallbackGlyphsIdx]),
2, SkPoint::Make(0, 0), fRegionClipBounds);
fFallbackGlyphsIdx = kGlyphBufferSize;
}
}
void GrAtlasTextBlob::flushCached(GrContext* context,
GrDrawContext* dc,
const SkTextBlob* blob,
const SkSurfaceProps& props,
const GrDistanceFieldAdjustTable* distanceAdjustTable,
const SkPaint& skPaint,
const GrPaint& grPaint,
SkDrawFilter* drawFilter,
const GrClip& clip,
const SkMatrix& viewMatrix,
const SkIRect& clipBounds,
SkScalar x, SkScalar y) {
// We loop through the runs of the blob, flushing each. If any run is too large, then we flush
// it as paths
GrPipelineBuilder pipelineBuilder(grPaint, dc->isUnifiedMultisampled());
pipelineBuilder.setRenderTarget(dc->accessRenderTarget());
GrColor color = grPaint.getColor();
SkTextBlobRunIterator it(blob);
for (int run = 0; !it.done(); it.next(), run++) {
if (fRuns[run].fDrawAsPaths) {
this->flushRunAsPaths(context, dc, props, it, clip, skPaint,
drawFilter, viewMatrix, clipBounds, x, y);
continue;
}
this->flushRun(dc, &pipelineBuilder, clip, run, viewMatrix, x, y, color, skPaint, props,
distanceAdjustTable, context->getBatchFontCache());
}
// Now flush big glyphs
this->flushBigGlyphs(context, dc, clip, skPaint, viewMatrix, x, y, clipBounds);
}
BSONObj ResolvedViewDefinition::asExpandedViewAggregation(const AggregationRequest& request) {
BSONObjBuilder aggregationBuilder;
// Perform the aggregation on the resolved namespace.
aggregationBuilder.append("aggregate", collectionNss.coll());
// The new pipeline consists of two parts: first, 'pipeline' in this ResolvedViewDefinition;
// then, the pipeline in 'request'.
BSONArrayBuilder pipelineBuilder(aggregationBuilder.subarrayStart("pipeline"));
for (auto&& item : pipeline) {
pipelineBuilder.append(item);
}
for (auto&& item : request.getPipeline()) {
pipelineBuilder.append(item);
}
pipelineBuilder.doneFast();
// The cursor option is always specified regardless of the presence of batchSize.
if (request.getBatchSize()) {
BSONObjBuilder batchSizeBuilder(aggregationBuilder.subobjStart("cursor"));
batchSizeBuilder.append(AggregationRequest::kBatchSizeName, *request.getBatchSize());
batchSizeBuilder.doneFast();
} else {
aggregationBuilder.append("cursor", BSONObj());
}
if (request.isExplain())
aggregationBuilder.append("explain", true);
return aggregationBuilder.obj();
}
bool GrDashLinePathRenderer::onDrawPath(const DrawPathArgs& args) {
GR_AUDIT_TRAIL_AUTO_FRAME(args.fDrawContext->auditTrail(),
"GrDashLinePathRenderer::onDrawPath");
bool useHWAA = args.fDrawContext->isUnifiedMultisampled();
GrDashingEffect::AAMode aaMode;
if (useHWAA) {
// We ignore args.fAntiAlias here and force anti aliasing when using MSAA. Otherwise,
// we can wind up with external edges antialiased and internal edges unantialiased.
aaMode = GrDashingEffect::AAMode::kCoverageWithMSAA;
} else if (args.fAntiAlias) {
aaMode = GrDashingEffect::AAMode::kCoverage;
} else {
aaMode = GrDashingEffect::AAMode::kNone;
}
SkPoint pts[2];
SkAssertResult(args.fShape->asLine(pts, nullptr));
SkAutoTUnref<GrDrawBatch> batch(GrDashingEffect::CreateDashLineBatch(args.fColor,
*args.fViewMatrix,
pts,
aaMode,
args.fShape->style()));
if (!batch) {
return false;
}
GrPipelineBuilder pipelineBuilder(*args.fPaint, useHWAA);
pipelineBuilder.setUserStencil(args.fUserStencilSettings);
args.fDrawContext->drawBatch(pipelineBuilder, *args.fClip, batch);
return true;
}
void GrSWMaskHelper::DrawToTargetWithShapeMask(sk_sp<GrTextureProxy> proxy,
GrRenderTargetContext* renderTargetContext,
GrPaint&& paint,
const GrUserStencilSettings& userStencilSettings,
const GrClip& clip,
const SkMatrix& viewMatrix,
const SkIPoint& textureOriginInDeviceSpace,
const SkIRect& deviceSpaceRectToDraw) {
SkMatrix invert;
if (!viewMatrix.invert(&invert)) {
return;
}
GrResourceProvider* resourceProvider = renderTargetContext->resourceProvider();
SkRect dstRect = SkRect::Make(deviceSpaceRectToDraw);
// We use device coords to compute the texture coordinates. We take the device coords and apply
// a translation so that the top-left of the device bounds maps to 0,0, and then a scaling
// matrix to normalized coords.
SkMatrix maskMatrix = SkMatrix::MakeTrans(SkIntToScalar(-textureOriginInDeviceSpace.fX),
SkIntToScalar(-textureOriginInDeviceSpace.fY));
maskMatrix.preConcat(viewMatrix);
std::unique_ptr<GrLegacyMeshDrawOp> op = GrRectOpFactory::MakeNonAAFill(
paint.getColor(), SkMatrix::I(), dstRect, nullptr, &invert);
paint.addCoverageFragmentProcessor(GrSimpleTextureEffect::Make(
resourceProvider, std::move(proxy), nullptr, maskMatrix,
GrSamplerParams::kNone_FilterMode));
GrPipelineBuilder pipelineBuilder(std::move(paint), GrAAType::kNone);
pipelineBuilder.setUserStencil(&userStencilSettings);
renderTargetContext->addLegacyMeshDrawOp(std::move(pipelineBuilder), clip, std::move(op));
}
void GrDrawContext::drawPaint(GrRenderTarget* rt,
const GrClip& clip,
const GrPaint& origPaint,
const SkMatrix& viewMatrix) {
RETURN_IF_ABANDONED
// set rect to be big enough to fill the space, but not super-huge, so we
// don't overflow fixed-point implementations
SkRect r;
r.setLTRB(0, 0,
SkIntToScalar(rt->width()),
SkIntToScalar(rt->height()));
SkTCopyOnFirstWrite<GrPaint> paint(origPaint);
// by definition this fills the entire clip, no need for AA
if (paint->isAntiAlias()) {
paint.writable()->setAntiAlias(false);
}
bool isPerspective = viewMatrix.hasPerspective();
// We attempt to map r by the inverse matrix and draw that. mapRect will
// map the four corners and bound them with a new rect. This will not
// produce a correct result for some perspective matrices.
if (!isPerspective) {
SkMatrix inverse;
if (!viewMatrix.invert(&inverse)) {
SkDebugf("Could not invert matrix\n");
return;
}
inverse.mapRect(&r);
this->drawRect(rt, clip, *paint, viewMatrix, r);
} else {
SkMatrix localMatrix;
if (!viewMatrix.invert(&localMatrix)) {
SkDebugf("Could not invert matrix\n");
return;
}
AutoCheckFlush acf(fContext);
if (!this->prepareToDraw(rt)) {
return;
}
GrPipelineBuilder pipelineBuilder(*paint, rt, clip);
fDrawTarget->drawBWRect(pipelineBuilder,
paint->getColor(),
SkMatrix::I(),
r,
NULL,
&localMatrix);
}
}
void GrStencilAndCoverTextContext::flush(GrDrawContext* dc) {
if (fDraw) {
SkASSERT(fDraw->count());
// We should only be flushing about once every run. However, if this impacts performance
// we could move the creation of the GrPipelineBuilder earlier.
GrPipelineBuilder pipelineBuilder(fPaint, fRenderTarget, fClip);
SkASSERT(fRenderTarget->isStencilBufferMultisampled() || !fPaint.isAntiAlias());
pipelineBuilder.setState(GrPipelineBuilder::kHWAntialias_Flag, fPaint.isAntiAlias());
GR_STATIC_CONST_SAME_STENCIL(kStencilPass,
kZero_StencilOp,
kKeep_StencilOp,
kNotEqual_StencilFunc,
0xffff,
0x0000,
0xffff);
*pipelineBuilder.stencil() = kStencilPass;
dc->drawPathsFromRange(&pipelineBuilder, fViewMatrix, fLocalMatrix, fPaint.getColor(),
fDraw, GrPathRendering::kWinding_FillType);
fDraw->unref();
fDraw = nullptr;
}
if (fFallbackIndices.count()) {
SkASSERT(fFallbackPositions.count() == fFallbackIndices.count());
GrPaint paintFallback(fPaint);
SkPaint skPaintFallback(fSkPaint);
if (!fUsingDeviceSpaceGlyphs) {
fStroke.applyToPaint(&skPaintFallback);
}
skPaintFallback.setTextAlign(SkPaint::kLeft_Align); // Align has already been accounted for.
skPaintFallback.setTextEncoding(SkPaint::kGlyphID_TextEncoding);
SkMatrix inverse;
if (this->mapToFallbackContext(&inverse)) {
inverse.mapPoints(fFallbackPositions.begin(), fFallbackPositions.count());
}
fFallbackTextContext->drawPosText(dc, fRenderTarget, fClip, paintFallback, skPaintFallback,
fViewMatrix, (char*)fFallbackIndices.begin(),
sizeof(uint16_t) * fFallbackIndices.count(),
get_xy_scalar_array(fFallbackPositions.begin()),
2, SkPoint::Make(0, 0), fRegionClipBounds);
fFallbackIndices.reset();
fFallbackPositions.reset();
}
}
void GrStencilAndCoverTextContext::onDrawText(GrDrawContext* dc, 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& clipBounds) {
TextRun run(skPaint);
GrPipelineBuilder pipelineBuilder(paint, rt, clip);
run.setText(text, byteLength, x, y);
run.draw(fContext, dc, &pipelineBuilder, paint.getColor(), viewMatrix, 0, 0, clipBounds,
fFallbackTextContext, skPaint);
}
void GrSoftwarePathRenderer::DrawNonAARect(GrDrawContext* drawContext,
const GrPaint* paint,
const GrUserStencilSettings* userStencilSettings,
const GrClip& clip,
GrColor color,
const SkMatrix& viewMatrix,
const SkRect& rect,
const SkMatrix& localMatrix) {
SkAutoTUnref<GrDrawBatch> batch(GrRectBatchFactory::CreateNonAAFill(color, viewMatrix, rect,
nullptr, &localMatrix));
GrPipelineBuilder pipelineBuilder(*paint, drawContext->mustUseHWAA(*paint));
pipelineBuilder.setUserStencil(userStencilSettings);
drawContext->drawBatch(pipelineBuilder, clip, batch);
}
void GrStencilAndCoverTextContext::onDrawPosText(GrDrawContext* dc, GrRenderTarget* rt,
const GrClip& clip,
const GrPaint& paint,
const SkPaint& skPaint,
const SkMatrix& viewMatrix,
const char text[],
size_t byteLength,
const SkScalar pos[],
int scalarsPerPosition,
const SkPoint& offset,
const SkIRect& clipBounds) {
TextRun run(skPaint);
GrPipelineBuilder pipelineBuilder(paint, rt, clip);
run.setPosText(text, byteLength, pos, scalarsPerPosition, offset);
run.draw(fContext, dc, &pipelineBuilder, paint.getColor(), viewMatrix, 0, 0, clipBounds,
fFallbackTextContext, skPaint);
}
void GrAtlasTextBlob::flushThrowaway(GrContext* context,
GrDrawContext* dc,
const SkSurfaceProps& props,
const GrDistanceFieldAdjustTable* distanceAdjustTable,
const SkPaint& skPaint,
const GrPaint& grPaint,
const GrClip& clip,
const SkIRect& clipBounds) {
GrPipelineBuilder pipelineBuilder(grPaint, dc->accessRenderTarget(), clip);
GrColor color = grPaint.getColor();
for (int run = 0; run < fRunCount; run++) {
this->flushRun(dc, &pipelineBuilder, run, color, 0, 0, skPaint, props,
distanceAdjustTable, context->getBatchFontCache());
}
// Now flush big glyphs
this->flushBigGlyphs(context, dc, clip, skPaint, 0, 0, clipBounds);
}
void GrSWMaskHelper::DrawToTargetWithPathMask(GrTexture* texture,
GrDrawContext* drawContext,
const GrPaint* paint,
const GrUserStencilSettings* userStencilSettings,
const GrClip& clip,
GrColor color,
const SkMatrix& viewMatrix,
const SkIRect& rect) {
SkMatrix invert;
if (!viewMatrix.invert(&invert)) {
return;
}
SkRect dstRect = SkRect::MakeLTRB(SK_Scalar1 * rect.fLeft,
SK_Scalar1 * rect.fTop,
SK_Scalar1 * rect.fRight,
SK_Scalar1 * rect.fBottom);
// We use device coords to compute the texture coordinates. We take the device coords and apply
// a translation so that the top-left of the device bounds maps to 0,0, and then a scaling
// matrix to normalized coords.
SkMatrix maskMatrix;
maskMatrix.setIDiv(texture->width(), texture->height());
maskMatrix.preTranslate(SkIntToScalar(-rect.fLeft), SkIntToScalar(-rect.fTop));
GrPipelineBuilder pipelineBuilder(*paint, drawContext->isUnifiedMultisampled());
pipelineBuilder.setRenderTarget(drawContext->accessRenderTarget());
pipelineBuilder.setUserStencil(userStencilSettings);
pipelineBuilder.addCoverageFragmentProcessor(
GrSimpleTextureEffect::Create(texture,
maskMatrix,
GrTextureParams::kNone_FilterMode,
kDevice_GrCoordSet))->unref();
SkAutoTUnref<GrDrawBatch> batch(GrRectBatchFactory::CreateNonAAFill(color, SkMatrix::I(),
dstRect, nullptr, &invert));
drawContext->drawBatch(pipelineBuilder, clip, batch);
}
void GrAtlasTextBlob::flushThrowaway(GrContext* context,
GrDrawContext* dc,
const SkSurfaceProps& props,
const GrDistanceFieldAdjustTable* distanceAdjustTable,
const SkPaint& skPaint,
const GrPaint& grPaint,
const GrClip& clip,
const SkMatrix& viewMatrix,
const SkIRect& clipBounds,
SkScalar x, SkScalar y) {
GrPipelineBuilder pipelineBuilder(grPaint, dc->isUnifiedMultisampled());
pipelineBuilder.setRenderTarget(dc->accessRenderTarget());
GrColor color = grPaint.getColor();
for (int run = 0; run < fRunCount; run++) {
this->flushRun(dc, &pipelineBuilder, clip, run, viewMatrix, x, y, color, skPaint, props,
distanceAdjustTable, context->getBatchFontCache());
}
// Now flush big glyphs
this->flushBigGlyphs(context, dc, clip, skPaint, viewMatrix, x, y, clipBounds);
}
void GrStencilAndCoverTextContext::drawTextBlob(GrContext* context, GrDrawContext* dc,
const GrClip& clip, const SkPaint& skPaint,
const SkMatrix& viewMatrix,
const SkSurfaceProps& props,
const SkTextBlob* skBlob, SkScalar x, SkScalar y,
SkDrawFilter* drawFilter,
const SkIRect& clipBounds) {
if (context->abandoned()) {
return;
}
if (!this->internalCanDraw(skPaint)) {
fFallbackTextContext->drawTextBlob(context, dc, clip, skPaint, viewMatrix, props, skBlob,
x, y, drawFilter, clipBounds);
return;
}
if (drawFilter || skPaint.getPathEffect()) {
// This draw can't be cached.
this->uncachedDrawTextBlob(context, dc, clip, skPaint, viewMatrix, props, skBlob, x, y,
drawFilter, clipBounds);
return;
}
GrPaint paint;
if (!SkPaintToGrPaint(context, skPaint, viewMatrix, &paint)) {
return;
}
const TextBlob& blob = this->findOrCreateTextBlob(skBlob, skPaint);
GrPipelineBuilder pipelineBuilder(paint, dc->accessRenderTarget(), clip);
TextBlob::Iter iter(blob);
for (TextRun* run = iter.get(); run; run = iter.next()) {
run->draw(context, dc, &pipelineBuilder, paint.getColor(), viewMatrix, props, x, y,
clipBounds, fFallbackTextContext, skPaint);
run->releaseGlyphCache();
}
}
void GrStencilAndCoverTextContext::TextRun::draw(GrContext* ctx,
GrDrawContext* drawContext,
const GrPaint& grPaint,
const GrClip& clip,
const SkMatrix& viewMatrix,
const SkSurfaceProps& props,
SkScalar x, SkScalar y,
const SkIRect& clipBounds,
GrAtlasTextContext* fallbackTextContext,
const SkPaint& originalSkPaint) const {
SkASSERT(fInstanceData);
SkASSERT(drawContext->isStencilBufferMultisampled() || !grPaint.isAntiAlias());
if (fInstanceData->count()) {
static constexpr GrUserStencilSettings kCoverPass(
GrUserStencilSettings::StaticInit<
0x0000,
GrUserStencilTest::kNotEqual, // Stencil pass accounts for clip.
0xffff,
GrUserStencilOp::kZero,
GrUserStencilOp::kKeep,
0xffff>()
);
SkAutoTUnref<GrPathRange> glyphs(this->createGlyphs(ctx));
if (fLastDrawnGlyphsID != glyphs->uniqueID()) {
// Either this is the first draw or the glyphs object was purged since last draw.
glyphs->loadPathsIfNeeded(fInstanceData->indices(), fInstanceData->count());
fLastDrawnGlyphsID = glyphs->uniqueID();
}
// Don't compute a bounding box. For dst copy texture, we'll opt instead for it to just copy
// the entire dst. Realistically this is a moot point, because any context that supports
// NV_path_rendering will also support NV_blend_equation_advanced.
// For clipping we'll just skip any optimizations based on the bounds. This does, however,
// hurt batching.
const SkRect bounds = SkRect::MakeIWH(drawContext->width(), drawContext->height());
SkAutoTUnref<GrDrawBatch> batch(
GrDrawPathRangeBatch::Create(viewMatrix, fTextRatio, fTextInverseRatio * x,
fTextInverseRatio * y, grPaint.getColor(),
GrPathRendering::kWinding_FillType, glyphs, fInstanceData,
bounds));
GrPipelineBuilder pipelineBuilder(grPaint);
pipelineBuilder.setState(GrPipelineBuilder::kHWAntialias_Flag, grPaint.isAntiAlias());
pipelineBuilder.setUserStencil(&kCoverPass);
drawContext->drawBatch(pipelineBuilder, clip, batch);
}
if (fFallbackTextBlob) {
SkPaint fallbackSkPaint(originalSkPaint);
fStyle.strokeRec().applyToPaint(&fallbackSkPaint);
if (!fStyle.isSimpleFill()) {
fallbackSkPaint.setStrokeWidth(fStyle.strokeRec().getWidth() * fTextRatio);
}
fallbackTextContext->drawTextBlob(ctx, drawContext, clip, fallbackSkPaint, viewMatrix,
props, fFallbackTextBlob.get(), x, y, nullptr,
clipBounds);
}
}
StatusWith<BSONObj> ParsedDistinct::asAggregationCommand() const {
BSONObjBuilder aggregationBuilder;
invariant(_query);
const QueryRequest& qr = _query->getQueryRequest();
aggregationBuilder.append("aggregate", qr.nss().coll());
// Build a pipeline that accomplishes the distinct request. The building code constructs a
// pipeline that looks like this, assuming the distinct is on the key "a.b.c"
//
// [
// { $match: { ... } },
// { $unwind: { path: "a", preserveNullAndEmptyArrays: true } },
// { $unwind: { path: "a.b", preserveNullAndEmptyArrays: true } },
// { $unwind: { path: "a.b.c", preserveNullAndEmptyArrays: true } },
// { $match: {"a": {$_internalSchemaType: "object"},
// "a.b": {$_internalSchemaType: "object"}}}
// { $group: { _id: null, distinct: { $addToSet: "$<key>" } } }
// ]
//
// The purpose of the intermediate $unwind stages is to deal with cases where there is an array
// along the distinct path. For example, if we're distincting on "a.b" and have a document like
// {a: [{b: 1}, {b: 2}]}, distinct() should produce two values: 1 and 2. If we were to only
// unwind on "a.b", the document would pass through the $unwind unmodified, and the $group
// stage would treat the entire array as a key, rather than each element.
//
// The reason for the $match with $_internalSchemaType is to deal with cases of nested
// arrays. The distinct command will not traverse paths inside of nested arrays. For example, a
// distinct on "a.b" with the following document will produce no results:
// {a: [[{b: 1}]]
//
// Any arrays remaining after the $unwinds must have been nested arrays, so in order to match
// the behavior of the distinct() command, we filter them out before the $group.
BSONArrayBuilder pipelineBuilder(aggregationBuilder.subarrayStart("pipeline"));
if (!qr.getFilter().isEmpty()) {
BSONObjBuilder matchStageBuilder(pipelineBuilder.subobjStart());
matchStageBuilder.append("$match", qr.getFilter());
matchStageBuilder.doneFast();
}
FieldPath path(_key);
addNestedUnwind(&pipelineBuilder, path);
addMatchRemovingNestedArrays(&pipelineBuilder, path);
BSONObjBuilder groupStageBuilder(pipelineBuilder.subobjStart());
{
BSONObjBuilder groupBuilder(groupStageBuilder.subobjStart("$group"));
groupBuilder.appendNull("_id");
{
BSONObjBuilder distinctBuilder(groupBuilder.subobjStart("distinct"));
distinctBuilder.append("$addToSet", str::stream() << "$" << _key);
distinctBuilder.doneFast();
}
groupBuilder.doneFast();
}
groupStageBuilder.doneFast();
pipelineBuilder.doneFast();
aggregationBuilder.append(kCollationField, qr.getCollation());
if (qr.getMaxTimeMS() > 0) {
aggregationBuilder.append(QueryRequest::cmdOptionMaxTimeMS, qr.getMaxTimeMS());
}
if (!qr.getReadConcern().isEmpty()) {
aggregationBuilder.append(repl::ReadConcernArgs::kReadConcernFieldName,
qr.getReadConcern());
}
if (!qr.getUnwrappedReadPref().isEmpty()) {
aggregationBuilder.append(QueryRequest::kUnwrappedReadPrefField, qr.getUnwrappedReadPref());
}
if (!qr.getComment().empty()) {
aggregationBuilder.append(kCommentField, qr.getComment());
}
// Specify the 'cursor' option so that aggregation uses the cursor interface.
aggregationBuilder.append("cursor", BSONObj());
return aggregationBuilder.obj();
}
bool GrStencilAndCoverPathRenderer::onDrawPath(const DrawPathArgs& args) {
GR_AUDIT_TRAIL_AUTO_FRAME(args.fDrawContext->auditTrail(),
"GrStencilAndCoverPathRenderer::onDrawPath");
SkASSERT(!args.fPaint->isAntiAlias() || args.fDrawContext->isStencilBufferMultisampled());
SkASSERT(!args.fShape->style().strokeRec().isHairlineStyle());
const SkMatrix& viewMatrix = *args.fViewMatrix;
SkPath path;
args.fShape->asPath(&path);
SkAutoTUnref<GrPath> p(get_gr_path(fResourceProvider, path, args.fShape->style()));
if (path.isInverseFillType()) {
static constexpr GrUserStencilSettings kInvertedCoverPass(
GrUserStencilSettings::StaticInit<
0x0000,
// We know our rect will hit pixels outside the clip and the user bits will be 0
// outside the clip. So we can't just fill where the user bits are 0. We also need
// to check that the clip bit is set.
GrUserStencilTest::kEqualIfInClip,
0xffff,
GrUserStencilOp::kKeep,
GrUserStencilOp::kZero,
0xffff>()
);
// fake inverse with a stencil and cover
args.fDrawContext->drawContextPriv().stencilPath(*args.fClip,
&kInvertedCoverPass,
args.fPaint->isAntiAlias(),
viewMatrix, p);
SkMatrix invert = SkMatrix::I();
SkRect bounds =
SkRect::MakeLTRB(0, 0,
SkIntToScalar(args.fDrawContext->width()),
SkIntToScalar(args.fDrawContext->height()));
SkMatrix vmi;
// mapRect through persp matrix may not be correct
if (!viewMatrix.hasPerspective() && viewMatrix.invert(&vmi)) {
vmi.mapRect(&bounds);
// theoretically could set bloat = 0, instead leave it because of matrix inversion
// precision.
SkScalar bloat = viewMatrix.getMaxScale() * SK_ScalarHalf;
bounds.outset(bloat, bloat);
} else {
if (!viewMatrix.invert(&invert)) {
return false;
}
}
const SkMatrix& viewM = viewMatrix.hasPerspective() ? SkMatrix::I() : viewMatrix;
SkAutoTUnref<GrDrawBatch> coverBatch(
GrRectBatchFactory::CreateNonAAFill(args.fPaint->getColor(), viewM, bounds,
nullptr, &invert));
{
GrPipelineBuilder pipelineBuilder(*args.fPaint,
args.fPaint->isAntiAlias() &&
!args.fDrawContext->hasMixedSamples());
pipelineBuilder.setUserStencil(&kInvertedCoverPass);
args.fDrawContext->drawBatch(pipelineBuilder, *args.fClip, coverBatch);
}
} else {
static constexpr GrUserStencilSettings kCoverPass(
GrUserStencilSettings::StaticInit<
0x0000,
GrUserStencilTest::kNotEqual,
0xffff,
GrUserStencilOp::kZero,
GrUserStencilOp::kKeep,
0xffff>()
);
SkAutoTUnref<GrDrawBatch> batch(
GrDrawPathBatch::Create(viewMatrix, args.fPaint->getColor(), p->getFillType(), p));
GrPipelineBuilder pipelineBuilder(*args.fPaint, args.fPaint->isAntiAlias());
pipelineBuilder.setUserStencil(&kCoverPass);
if (args.fAntiAlias) {
SkASSERT(args.fDrawContext->isStencilBufferMultisampled());
pipelineBuilder.enableState(GrPipelineBuilder::kHWAntialias_Flag);
}
args.fDrawContext->drawBatch(pipelineBuilder, *args.fClip, batch);
}
return true;
}
