void SkScan::FillPath(const SkPath& path, const SkRegion& origClip,
SkBlitter* blitter) {
if (origClip.isEmpty()) {
return;
}
// Our edges are fixed-point, and don't like the bounds of the clip to
// exceed that. Here we trim the clip just so we don't overflow later on
const SkRegion* clipPtr = &origClip;
SkRegion finiteClip;
if (clip_to_limit(origClip, &finiteClip)) {
if (finiteClip.isEmpty()) {
return;
}
clipPtr = &finiteClip;
}
// don't reference "origClip" any more, just use clipPtr
SkRect bounds = path.getBounds();
bool irPreClipped = false;
if (!SkRectPriv::MakeLargeS32().contains(bounds)) {
if (!bounds.intersect(SkRectPriv::MakeLargeS32())) {
bounds.setEmpty();
}
irPreClipped = true;
}
SkIRect ir = conservative_round_to_int(bounds);
if (ir.isEmpty()) {
if (path.isInverseFillType()) {
blitter->blitRegion(*clipPtr);
}
return;
}
SkScanClipper clipper(blitter, clipPtr, ir, path.isInverseFillType(), irPreClipped);
blitter = clipper.getBlitter();
if (blitter) {
// we have to keep our calls to blitter in sorted order, so we
// must blit the above section first, then the middle, then the bottom.
if (path.isInverseFillType()) {
sk_blit_above(blitter, ir, *clipPtr);
}
SkASSERT(clipper.getClipRect() == nullptr ||
*clipper.getClipRect() == clipPtr->getBounds());
sk_fill_path(path, clipPtr->getBounds(), blitter, ir.fTop, ir.fBottom,
0, clipper.getClipRect() == nullptr);
if (path.isInverseFillType()) {
sk_blit_below(blitter, ir, *clipPtr);
}
} else {
// what does it mean to not have a blitter if path.isInverseFillType???
}
}
bool GrClipMaskManager::canStencilAndDrawElement(GrPipelineBuilder* pipelineBuilder,
GrTexture* target,
GrPathRenderer** pr,
const SkClipStack::Element* element) {
pipelineBuilder->setRenderTarget(target->asRenderTarget());
if (Element::kRect_Type == element->getType()) {
return true;
} else {
// We shouldn't get here with an empty clip element.
SkASSERT(Element::kEmpty_Type != element->getType());
SkPath path;
element->asPath(&path);
if (path.isInverseFillType()) {
path.toggleInverseFillType();
}
GrStrokeInfo stroke(SkStrokeRec::kFill_InitStyle);
GrPathRendererChain::DrawType type = element->isAA() ?
GrPathRendererChain::kStencilAndColorAntiAlias_DrawType :
GrPathRendererChain::kStencilAndColor_DrawType;
*pr = this->getContext()->getPathRenderer(fDrawTarget, pipelineBuilder, SkMatrix::I(), path,
stroke, false, type);
return SkToBool(*pr);
}
}
bool GrClipMaskManager::drawElement(GrPipelineBuilder* pipelineBuilder,
const SkMatrix& viewMatrix,
GrTexture* target,
const SkClipStack::Element* element,
GrPathRenderer* pr) {
GrDrawTarget::AutoGeometryPush agp(fClipTarget);
pipelineBuilder->setRenderTarget(target->asRenderTarget());
// The color we use to draw does not matter since we will always be using a GrCoverageSetOpXP
// which ignores color.
GrColor color = GrColor_WHITE;
// TODO: Draw rrects directly here.
switch (element->getType()) {
case Element::kEmpty_Type:
SkDEBUGFAIL("Should never get here with an empty element.");
break;
case Element::kRect_Type:
// TODO: Do rects directly to the accumulator using a aa-rect GrProcessor that covers
// the entire mask bounds and writes 0 outside the rect.
if (element->isAA()) {
SkRect devRect = element->getRect();
viewMatrix.mapRect(&devRect);
this->getContext()->getAARectRenderer()->fillAARect(fClipTarget,
pipelineBuilder,
color,
viewMatrix,
element->getRect(),
devRect);
} else {
fClipTarget->drawSimpleRect(pipelineBuilder, color, viewMatrix, element->getRect());
}
return true;
default: {
SkPath path;
element->asPath(&path);
path.setIsVolatile(true);
if (path.isInverseFillType()) {
path.toggleInverseFillType();
}
SkStrokeRec stroke(SkStrokeRec::kFill_InitStyle);
if (NULL == pr) {
GrPathRendererChain::DrawType type;
type = element->isAA() ? GrPathRendererChain::kColorAntiAlias_DrawType :
GrPathRendererChain::kColor_DrawType;
pr = this->getContext()->getPathRenderer(fClipTarget, pipelineBuilder, viewMatrix,
path, stroke, false, type);
}
if (NULL == pr) {
return false;
}
pr->drawPath(fClipTarget, pipelineBuilder, color, viewMatrix, path, stroke,
element->isAA());
break;
}
}
return true;
}
bool GrStrokePathRenderer::canDrawPath(const SkPath& path,
const SkStrokeRec& stroke,
const GrDrawTarget* target,
bool antiAlias) const {
// FIXME : put the proper condition once GrDrawTarget::isOpaque is implemented
const bool isOpaque = true; // target->isOpaque();
// FIXME : remove this requirement once we have AA circles and implement the
// circle joins/caps appropriately in the ::onDrawPath() function.
const bool requiresAACircle = (stroke.getCap() == SkPaint::kRound_Cap) ||
(stroke.getJoin() == SkPaint::kRound_Join);
// Indices being stored in uint16, we don't want to overflow the indices capacity
static const int maxVBSize = 1 << 16;
const int maxNbVerts = (path.countPoints() + 1) * 5;
// Check that the path contains no curved lines, only straight lines
static const uint32_t unsupportedMask = SkPath::kQuad_SegmentMask | SkPath::kCubic_SegmentMask;
// Must not be filled nor hairline nor semi-transparent
// Note : May require a check to path.isConvex() if AA is supported
return ((stroke.getStyle() == SkStrokeRec::kStroke_Style) && (maxNbVerts < maxVBSize) &&
!path.isInverseFillType() && isOpaque && !requiresAACircle && !antiAlias &&
((path.getSegmentMasks() & unsupportedMask) == 0));
}
static bool stencil_element(GrDrawContext* dc,
const GrFixedClip& clip,
const GrUserStencilSettings* ss,
const SkMatrix& viewMatrix,
const SkClipStack::Element* element) {
// TODO: Draw rrects directly here.
switch (element->getType()) {
case Element::kEmpty_Type:
SkDEBUGFAIL("Should never get here with an empty element.");
break;
case Element::kRect_Type:
return dc->drawContextPriv().drawAndStencilRect(clip, ss,
element->getOp(),
element->isInverseFilled(),
element->isAA(),
viewMatrix, element->getRect());
break;
default: {
SkPath path;
element->asPath(&path);
if (path.isInverseFillType()) {
path.toggleInverseFillType();
}
return dc->drawContextPriv().drawAndStencilPath(clip, ss,
element->getOp(),
element->isInverseFilled(),
element->isAA(), viewMatrix, path);
break;
}
}
return false;
}
static void draw_element(GrDrawContext* dc,
const GrClip& clip, // TODO: can this just always be WideOpen?
const GrPaint &paint,
const SkMatrix& viewMatrix,
const SkClipStack::Element* element) {
// TODO: Draw rrects directly here.
switch (element->getType()) {
case Element::kEmpty_Type:
SkDEBUGFAIL("Should never get here with an empty element.");
break;
case Element::kRect_Type:
dc->drawRect(clip, paint, viewMatrix, element->getRect());
break;
default: {
SkPath path;
element->asPath(&path);
if (path.isInverseFillType()) {
path.toggleInverseFillType();
}
dc->drawPath(clip, paint, viewMatrix, path, GrStyle::SimpleFill());
break;
}
}
}
void GrStencilAndCoverPathRenderer::onStencilPath(const SkPath& path,
const SkStrokeRec& stroke,
GrDrawTarget* target) {
SkASSERT(!path.isInverseFillType());
SkAutoTUnref<GrPath> p(fGpu->createPath(path));
target->stencilPath(p, stroke, path.getFillType());
}
bool SkRasterClip::op(const SkPath& path, const SkMatrix& matrix, const SkIRect& bounds,
SkRegion::Op op, bool doAA) {
AUTO_RASTERCLIP_VALIDATE(*this);
if (fForceConservativeRects) {
SkIRect ir;
switch (mutate_conservative_op(&op, path.isInverseFillType())) {
case kDoNothing_MutateResult:
return !this->isEmpty();
case kReplaceClippedAgainstGlobalBounds_MutateResult:
ir = bounds;
break;
case kContinue_MutateResult: {
SkRect bounds = path.getBounds();
matrix.mapRect(&bounds);
ir = bounds.roundOut();
break;
}
}
return this->op(ir, op);
}
// base is used to limit the size (and therefore memory allocation) of the
// region that results from scan converting devPath.
SkRegion base;
SkPath devPath;
if (matrix.isIdentity()) {
devPath = path;
} else {
path.transform(matrix, &devPath);
devPath.setIsVolatile(true);
}
if (SkRegion::kIntersect_Op == op) {
// since we are intersect, we can do better (tighter) with currRgn's
// bounds, than just using the device. However, if currRgn is complex,
// our region blitter may hork, so we do that case in two steps.
if (this->isRect()) {
// FIXME: we should also be able to do this when this->isBW(),
// but relaxing the test above triggers GM asserts in
// SkRgnBuilder::blitH(). We need to investigate what's going on.
return this->setPath(devPath, this->bwRgn(), doAA);
} else {
base.setRect(this->getBounds());
SkRasterClip clip(fForceConservativeRects);
clip.setPath(devPath, base, doAA);
return this->op(clip, op);
}
} else {
base.setRect(bounds);
if (SkRegion::kReplace_Op == op) {
return this->setPath(devPath, base, doAA);
} else {
SkRasterClip clip(fForceConservativeRects);
clip.setPath(devPath, base, doAA);
return this->op(clip, op);
}
}
}
bool GrAndroidPathRenderer::canDrawPath(const SkPath& path,
const SkStrokeRec& stroke,
const GrDrawTarget* target,
bool antiAlias) const {
return ((stroke.isFillStyle() || stroke.getStyle() == SkStrokeRec::kStroke_Style)
&& !path.isInverseFillType() && path.isConvex());
}
bool GrAADistanceFieldPathRenderer::canDrawPath(const GrDrawTarget* target,
const GrPipelineBuilder* pipelineBuilder,
const SkMatrix& viewMatrix,
const SkPath& path,
const GrStrokeInfo& stroke,
bool antiAlias) const {
// TODO: Support inverse fill
// TODO: Support strokes
if (!target->caps()->shaderCaps()->shaderDerivativeSupport() || !antiAlias
|| path.isInverseFillType() || path.isVolatile() || !stroke.isFillStyle()) {
return false;
}
// currently don't support perspective
if (viewMatrix.hasPerspective()) {
return false;
}
// only support paths smaller than 64x64, scaled to less than 256x256
// the goal is to accelerate rendering of lots of small paths that may be scaling
SkScalar maxScale = viewMatrix.getMaxScale();
const SkRect& bounds = path.getBounds();
SkScalar maxDim = SkMaxScalar(bounds.width(), bounds.height());
return maxDim < 64.f && maxDim * maxScale < 256.f;
}
void GrStencilAndCoverPathRenderer::onStencilPath(const SkPath& path,
const SkStrokeRec& stroke,
GrDrawTarget* target) {
SkASSERT(!path.isInverseFillType());
SkAutoTUnref<GrPath> p(get_gr_path(fGpu, path, stroke));
target->stencilPath(p, convert_skpath_filltype(path.getFillType()));
}
/* Two invariants are tested: How does an empty/degenerate path draw?
* - if the path is drawn inverse, it should draw everywhere
* - if the path is drawn non-inverse, it should draw nowhere
*
* Things to iterate on:
* - path (empty, degenerate line/quad/cubic w/ and w/o close
* - paint style
* - path filltype
* - path stroke variants (e.g. caps, joins, width)
*/
static void test_emptydrawing(skiatest::Reporter* reporter) {
static void (*gMakeProc[])(SkPath*) = {
make_empty, make_M, make_MM, make_MZM, make_L, make_Q, make_C
};
static SkPath::FillType gFills[] = {
SkPath::kWinding_FillType,
SkPath::kEvenOdd_FillType,
SkPath::kInverseWinding_FillType,
SkPath::kInverseEvenOdd_FillType
};
for (int doClose = 0; doClose < 2; ++doClose) {
for (size_t i = 0; i < SK_ARRAY_COUNT(gMakeProc); ++i) {
SkPath path;
gMakeProc[i](&path);
if (doClose) {
path.close();
}
for (size_t fill = 0; fill < SK_ARRAY_COUNT(gFills); ++fill) {
path.setFillType(gFills[fill]);
bool shouldDraw = path.isInverseFillType();
iter_paint(reporter, path, shouldDraw);
}
}
}
}
TessellatingPathBatch(const GrColor& color,
const SkPath& path,
const GrStrokeInfo& stroke,
const SkMatrix& viewMatrix,
const SkRect& clipBounds)
: INHERITED(ClassID())
, fColor(color)
, fPath(path)
, fStroke(stroke)
, fViewMatrix(viewMatrix) {
const SkRect& pathBounds = path.getBounds();
fClipBounds = clipBounds;
// Because the clip bounds are used to add a contour for inverse fills, they must also
// include the path bounds.
fClipBounds.join(pathBounds);
if (path.isInverseFillType()) {
fBounds = fClipBounds;
} else {
fBounds = path.getBounds();
}
if (!stroke.isFillStyle()) {
SkScalar radius = SkScalarHalf(stroke.getWidth());
if (stroke.getJoin() == SkPaint::kMiter_Join) {
SkScalar scale = stroke.getMiter();
if (scale > SK_Scalar1) {
radius = SkScalarMul(radius, scale);
}
}
fBounds.outset(radius, radius);
}
viewMatrix.mapRect(&fBounds);
}
bool SkHitTestPath(const SkPath& path, SkRect& target, bool hires) {
if (target.isEmpty()) {
return false;
}
bool isInverse = path.isInverseFillType();
if (path.isEmpty()) {
return isInverse;
}
SkRect bounds = path.getBounds();
bool sects = SkRect::Intersects(target, bounds);
if (isInverse) {
if (!sects) {
return true;
}
} else {
if (!sects) {
return false;
}
if (target.contains(bounds)) {
return true;
}
}
SkPath devPath;
const SkPath* pathPtr;
SkRect devTarget;
if (hires) {
const SkScalar coordLimit = SkIntToScalar(16384);
const SkRect limit = { 0, 0, coordLimit, coordLimit };
SkMatrix matrix;
matrix.setRectToRect(bounds, limit, SkMatrix::kFill_ScaleToFit);
path.transform(matrix, &devPath);
matrix.mapRect(&devTarget, target);
pathPtr = &devPath;
} else {
devTarget = target;
pathPtr = &path;
}
SkIRect iTarget;
devTarget.round(&iTarget);
if (iTarget.isEmpty()) {
iTarget.fLeft = SkScalarFloorToInt(devTarget.fLeft);
iTarget.fTop = SkScalarFloorToInt(devTarget.fTop);
iTarget.fRight = iTarget.fLeft + 1;
iTarget.fBottom = iTarget.fTop + 1;
}
SkRegion clip(iTarget);
SkRegion rgn;
return rgn.setPath(*pathPtr, clip) ^ isInverse;
}
bool GrPLSPathRenderer::onCanDrawPath(const CanDrawPathArgs& args) const {
// We have support for even-odd rendering, but are having some troublesome
// seams. Disable in the presence of even-odd for now.
SkPath path;
args.fShape->asPath(&path);
return args.fShaderCaps->shaderDerivativeSupport() && args.fAntiAlias &&
args.fShape->style().isSimpleFill() && !path.isInverseFillType() &&
path.getFillType() == SkPath::FillType::kWinding_FillType;
}
bool GrAAConvexPathRenderer::canDrawPath(const GrDrawTarget* target,
const GrPipelineBuilder*,
const SkMatrix& viewMatrix,
const SkPath& path,
const GrStrokeInfo& stroke,
bool antiAlias) const {
return (target->caps()->shaderCaps()->shaderDerivativeSupport() && antiAlias &&
stroke.isFillStyle() && !path.isInverseFillType() && path.isConvex());
}
void SkDeferredCanvas::onDrawPath(const SkPath& path, const SkPaint& paint) {
if (path.isInverseFillType()) {
this->flush_before_saves();
} else {
SkRect modRect = path.getBounds();
this->flush_check(&modRect, &paint, kNoClip_Flag | kNoTranslate_Flag | kNoScale_Flag);
}
fCanvas->drawPath(path, paint);
}
static inline bool single_pass_path(const SkPath& path, const SkStrokeRec& stroke) {
#if STENCIL_OFF
return true;
#else
if (!stroke.isHairlineStyle() && !path.isInverseFillType()) {
return path.isConvex();
}
return false;
#endif
}
void GrStencilAndCoverPathRenderer::onStencilPath(GrDrawTarget* target,
GrPipelineBuilder* pipelineBuilder,
const SkMatrix& viewMatrix,
const SkPath& path,
const GrStrokeInfo& stroke) {
SkASSERT(!path.isInverseFillType());
SkAutoTUnref<GrPathProcessor> pp(GrPathProcessor::Create(GrColor_WHITE, viewMatrix));
SkAutoTUnref<GrPath> p(get_gr_path(fGpu, path, stroke.getStrokeRec()));
target->stencilPath(pipelineBuilder, pp, p, convert_skpath_filltype(path.getFillType()));
}
// Does the path in 'element' require SW rendering? If so, return true (and,
// optionally, set 'prOut' to NULL. If not, return false (and, optionally, set
// 'prOut' to the non-SW path renderer that will do the job).
bool GrClipMaskManager::PathNeedsSWRenderer(GrContext* context,
bool isStencilDisabled,
const GrRenderTarget* rt,
const SkMatrix& viewMatrix,
const Element* element,
GrPathRenderer** prOut,
bool needsStencil) {
if (Element::kRect_Type == element->getType()) {
// rects can always be drawn directly w/o using the software path
// TODO: skip rrects once we're drawing them directly.
if (prOut) {
*prOut = nullptr;
}
return false;
} else {
// We shouldn't get here with an empty clip element.
SkASSERT(Element::kEmpty_Type != element->getType());
// the gpu alpha mask will draw the inverse paths as non-inverse to a temp buffer
SkPath path;
element->asPath(&path);
if (path.isInverseFillType()) {
path.toggleInverseFillType();
}
GrStrokeInfo stroke(SkStrokeRec::kFill_InitStyle);
GrPathRendererChain::DrawType type;
if (needsStencil) {
type = element->isAA()
? GrPathRendererChain::kStencilAndColorAntiAlias_DrawType
: GrPathRendererChain::kStencilAndColor_DrawType;
} else {
type = element->isAA()
? GrPathRendererChain::kColorAntiAlias_DrawType
: GrPathRendererChain::kColor_DrawType;
}
GrPathRenderer::CanDrawPathArgs canDrawArgs;
canDrawArgs.fShaderCaps = context->caps()->shaderCaps();
canDrawArgs.fViewMatrix = &viewMatrix;
canDrawArgs.fPath = &path;
canDrawArgs.fStroke = &stroke;
canDrawArgs.fAntiAlias = element->isAA();
canDrawArgs.fIsStencilDisabled = isStencilDisabled;
canDrawArgs.fIsStencilBufferMSAA = rt->isStencilBufferMultisampled();
// the 'false' parameter disallows use of the SW path renderer
GrPathRenderer* pr = context->drawingManager()->getPathRenderer(canDrawArgs, false, type);
if (prOut) {
*prOut = pr;
}
return SkToBool(!pr);
}
}
void GrPathRenderer::GetPathDevBounds(const SkPath& path,
int devW, int devH,
const SkMatrix& matrix,
SkRect* bounds) {
if (path.isInverseFillType()) {
*bounds = SkRect::MakeWH(SkIntToScalar(devW), SkIntToScalar(devH));
return;
}
*bounds = path.getBounds();
matrix.mapRect(bounds);
}
////////////////////////////////////////////////////////////////////////////////
// return true on success; false on failure
bool GrSoftwarePathRenderer::onDrawPath(GrDrawTarget* target,
GrPipelineBuilder* pipelineBuilder,
GrColor color,
const SkMatrix& viewMatrix,
const SkPath& path,
const GrStrokeInfo& stroke,
bool antiAlias) {
if (NULL == fContext) {
return false;
}
SkIRect devPathBounds, devClipBounds;
if (!get_path_and_clip_bounds(target, pipelineBuilder, path, viewMatrix, &devPathBounds,
&devClipBounds)) {
if (path.isInverseFillType()) {
draw_around_inv_path(target, pipelineBuilder, color, viewMatrix, devClipBounds,
devPathBounds);
}
return true;
}
SkAutoTUnref<GrTexture> texture(
GrSWMaskHelper::DrawPathMaskToTexture(fContext, path, stroke,
devPathBounds,
antiAlias, &viewMatrix));
if (NULL == texture) {
return false;
}
GrPipelineBuilder copy = *pipelineBuilder;
GrSWMaskHelper::DrawToTargetWithPathMask(texture, target, ©, color, viewMatrix,
devPathBounds);
if (path.isInverseFillType()) {
draw_around_inv_path(target, pipelineBuilder, color, viewMatrix, devClipBounds,
devPathBounds);
}
return true;
}
void SkBBoxRecord::drawPath(const SkPath& path, const SkPaint& paint) {
if (path.isInverseFillType()) {
// If path is inverse filled, use the current clip bounds as the
// path's device-space bounding box.
SkIRect clipBounds;
if (this->getClipDeviceBounds(&clipBounds)) {
this->handleBBox(SkRect::Make(clipBounds));
INHERITED::drawPath(path, paint);
}
} else if (this->transformBounds(path.getBounds(), &paint)) {
INHERITED::drawPath(path, paint);
}
}
////////////////////////////////////////////////////////////////////////////////
// return true on success; false on failure
bool GrSoftwarePathRenderer::onDrawPath(const SkPath& path,
const SkStrokeRec& stroke,
GrDrawTarget* target,
bool antiAlias) {
if (NULL == fContext) {
return false;
}
GrDrawState* drawState = target->drawState();
SkMatrix vm = drawState->getViewMatrix();
GrIRect devPathBounds, devClipBounds;
if (!get_path_and_clip_bounds(target, path, vm,
&devPathBounds, &devClipBounds)) {
if (path.isInverseFillType()) {
draw_around_inv_path(target, devClipBounds, devPathBounds);
}
return true;
}
SkAutoTUnref<GrTexture> texture(
GrSWMaskHelper::DrawPathMaskToTexture(fContext, path, stroke,
devPathBounds,
antiAlias, &vm));
if (NULL == texture) {
return false;
}
GrSWMaskHelper::DrawToTargetWithPathMask(texture, target, devPathBounds);
if (path.isInverseFillType()) {
draw_around_inv_path(target, devClipBounds, devPathBounds);
}
return true;
}
bool GrClipMaskManager::drawElement(GrTexture* target,
const SkClipStack::Element* element,
GrPathRenderer* pr) {
GrDrawState* drawState = fGpu->drawState();
drawState->setRenderTarget(target->asRenderTarget());
// TODO: Draw rrects directly here.
switch (element->getType()) {
case Element::kEmpty_Type:
SkDEBUGFAIL("Should never get here with an empty element.");
break;
case Element::kRect_Type:
// TODO: Do rects directly to the accumulator using a aa-rect GrEffect that covers the
// entire mask bounds and writes 0 outside the rect.
if (element->isAA()) {
getContext()->getAARectRenderer()->fillAARect(fGpu,
fGpu,
element->getRect(),
SkMatrix::I(),
element->getRect(),
false);
} else {
fGpu->drawSimpleRect(element->getRect(), NULL);
}
return true;
default: {
SkPath path;
element->asPath(&path);
if (path.isInverseFillType()) {
path.toggleInverseFillType();
}
SkStrokeRec stroke(SkStrokeRec::kFill_InitStyle);
if (NULL == pr) {
GrPathRendererChain::DrawType type;
type = element->isAA() ? GrPathRendererChain::kColorAntiAlias_DrawType :
GrPathRendererChain::kColor_DrawType;
pr = this->getContext()->getPathRenderer(path, stroke, fGpu, false, type);
}
if (NULL == pr) {
return false;
}
pr->drawPath(path, stroke, fGpu, element->isAA());
break;
}
}
return true;
}
bool SkRasterClip::op(const SkPath& path, const SkISize& size, SkRegion::Op op, bool doAA) {
// base is used to limit the size (and therefore memory allocation) of the
// region that results from scan converting devPath.
SkRegion base;
if (fForceConservativeRects) {
SkIRect ir;
switch (mutate_conservative_op(&op, path.isInverseFillType())) {
case kDoNothing_MutateResult:
return !this->isEmpty();
case kReplaceClippedAgainstGlobalBounds_MutateResult:
ir = SkIRect::MakeSize(size);
break;
case kContinue_MutateResult:
ir = path.getBounds().roundOut();
break;
}
return this->op(ir, op);
}
if (SkRegion::kIntersect_Op == op) {
// since we are intersect, we can do better (tighter) with currRgn's
// bounds, than just using the device. However, if currRgn is complex,
// our region blitter may hork, so we do that case in two steps.
if (this->isRect()) {
// FIXME: we should also be able to do this when this->isBW(),
// but relaxing the test above triggers GM asserts in
// SkRgnBuilder::blitH(). We need to investigate what's going on.
return this->setPath(path, this->bwRgn(), doAA);
} else {
base.setRect(this->getBounds());
SkRasterClip clip(fForceConservativeRects);
clip.setPath(path, base, doAA);
return this->op(clip, op);
}
} else {
base.setRect(0, 0, size.width(), size.height());
if (SkRegion::kReplace_Op == op) {
return this->setPath(path, base, doAA);
} else {
SkRasterClip clip(fForceConservativeRects);
clip.setPath(path, base, doAA);
return this->op(clip, op);
}
}
}
void draw(Target* target, const GrGeometryProcessor* gp) const {
GrResourceProvider* rp = target->resourceProvider();
SkScalar screenSpaceTol = GrPathUtils::kDefaultTolerance;
SkScalar tol = GrPathUtils::scaleToleranceToSrc(screenSpaceTol, fViewMatrix,
fShape.bounds());
SkPath path;
fShape.asPath(&path);
bool inverseFill = path.isInverseFillType();
// construct a cache key from the path's genID and the view matrix
static const GrUniqueKey::Domain kDomain = GrUniqueKey::GenerateDomain();
GrUniqueKey key;
static constexpr int kClipBoundsCnt = sizeof(fClipBounds) / sizeof(uint32_t);
int shapeKeyDataCnt = fShape.unstyledKeySize();
SkASSERT(shapeKeyDataCnt >= 0);
GrUniqueKey::Builder builder(&key, kDomain, shapeKeyDataCnt + kClipBoundsCnt);
fShape.writeUnstyledKey(&builder[0]);
// For inverse fills, the tessellation is dependent on clip bounds.
if (inverseFill) {
memcpy(&builder[shapeKeyDataCnt], &fClipBounds, sizeof(fClipBounds));
} else {
memset(&builder[shapeKeyDataCnt], 0, sizeof(fClipBounds));
}
builder.finish();
SkAutoTUnref<GrBuffer> cachedVertexBuffer(rp->findAndRefTByUniqueKey<GrBuffer>(key));
int actualCount;
if (cache_match(cachedVertexBuffer.get(), tol, &actualCount)) {
this->drawVertices(target, gp, cachedVertexBuffer.get(), 0, actualCount);
return;
}
bool isLinear;
bool canMapVB = GrCaps::kNone_MapFlags != target->caps().mapBufferFlags();
StaticVertexAllocator allocator(rp, canMapVB);
int count = GrTessellator::PathToTriangles(path, tol, fClipBounds, &allocator, &isLinear);
if (count == 0) {
return;
}
this->drawVertices(target, gp, allocator.vertexBuffer(), 0, count);
TessInfo info;
info.fTolerance = isLinear ? 0 : tol;
info.fCount = count;
SkAutoTUnref<SkData> data(SkData::NewWithCopy(&info, sizeof(info)));
key.setCustomData(data.get());
rp->assignUniqueKeyToResource(key, allocator.vertexBuffer());
}
bool SkHitTestPathEx(const SkPath& path, SkScalar x, SkScalar y) {
bool isInverse = path.isInverseFillType();
if (path.isEmpty()) {
return isInverse;
}
const SkRect& bounds = path.getBounds();
if (!bounds.contains(x, y)) {
return isInverse;
}
SkPath::Iter iter(path, true);
bool done = false;
int w = 0;
do {
SkPoint pts[4];
switch (iter.next(pts, false)) {
case SkPath::kMove_Verb:
case SkPath::kClose_Verb:
break;
case SkPath::kLine_Verb:
w += winding_line(pts, x, y);
break;
case SkPath::kQuad_Verb:
w += winding_quad(pts, x, y);
break;
case SkPath::kCubic_Verb:
w += winding_cubic(pts, x, y);
break;
case SkPath::kDone_Verb:
done = true;
break;
}
} while (!done);
switch (path.getFillType()) {
case SkPath::kEvenOdd_FillType:
case SkPath::kInverseEvenOdd_FillType:
w &= 1;
break;
default:
break;
}
return SkToBool(w);
}
void SkConservativeClip::opPath(const SkPath& path, const SkMatrix& ctm, const SkIRect& devBounds,
SkRegion::Op op, bool doAA) {
SkIRect ir;
switch (mutate_conservative_op(&op, path.isInverseFillType())) {
case kDoNothing_MutateResult:
return;
case kReplaceClippedAgainstGlobalBounds_MutateResult:
ir = devBounds;
break;
case kContinue_MutateResult: {
SkRect bounds = path.getBounds();
ctm.mapRect(&bounds);
ir = bounds.roundOut();
break;
}
}
return this->opIRect(ir, op);
}
bool SkRasterClip::setPath(const SkPath& path, const SkRegion& clip, bool doAA) {
AUTO_RASTERCLIP_VALIDATE(*this);
if (fForceConservativeRects) {
return this->setConservativeRect(path.getBounds(), clip.getBounds(), path.isInverseFillType());
}
if (this->isBW() && !doAA) {
(void)fBW.setPath(path, clip);
} else {
// TODO: since we are going to over-write fAA completely (aren't we?)
// we should just clear our BW data (if any) and set fIsAA=true
if (this->isBW()) {
this->convertToAA();
}
(void)fAA.setPath(path, &clip, doAA);
}
return this->updateCacheAndReturnNonEmpty();
}
