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Implement caching of stroked paths in the tessellated path renderer.

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This requires adding the stroke info to the cache key, and doing the
stroking and dashing before rendering as triangles.

BUG=skia:3755

Review URL: https://codereview.chromium.org/1275553002
This commit is contained in:
senorblanco 2015-08-05 13:18:03 -07:00 committed by Commit bot
parent 94df02344b
commit 29e0d3f267
3 changed files with 69 additions and 17 deletions
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2
include/gpu/GrTestUtils.h
View File

@ -16,6 +16,7 @@
#include "SkRandom.h"
#include "SkStrokeRec.h"
class GrStrokeInfo;
class SkMatrix;
class SkPath;
class SkRRect;
@ -35,6 +36,7 @@ const SkRRect& TestRRectSimple(SkRandom*);
const SkPath& TestPath(SkRandom*);
const SkPath& TestPathConvex(SkRandom*);
SkStrokeRec TestStrokeRec(SkRandom*);
GrStrokeInfo TestStrokeInfo(SkRandom*);
}

47
src/gpu/GrTessellatingPathRenderer.cpp
View File

@ -1384,9 +1384,10 @@ private:
} // namespace
bool GrTessellatingPathRenderer::onCanDrawPath(const CanDrawPathArgs& args) const {
// This path renderer can draw all fill styles, but does not do antialiasing. It can do convex
// and concave paths, but we'll leave the convex ones to simpler algorithms.
return args.fStroke->isFillStyle() && !args.fAntiAlias && !args.fPath->isConvex();
// This path renderer can draw all fill styles, all stroke styles except hairlines, but does
// not do antialiasing. It can do convex and concave paths, but we'll leave the convex ones to
// simpler algorithms.
return !args.fStroke->isHairlineStyle() && !args.fAntiAlias && !args.fPath->isConvex();
}
class TessellatingPathBatch : public GrBatch {
@ -1394,9 +1395,10 @@ public:
static GrBatch* Create(const GrColor& color,
const SkPath& path,
const GrStrokeInfo& stroke,
const SkMatrix& viewMatrix,
SkRect clipBounds) {
return SkNEW_ARGS(TessellatingPathBatch, (color, path, viewMatrix, clipBounds));
return SkNEW_ARGS(TessellatingPathBatch, (color, path, stroke, viewMatrix, clipBounds));
}
const char* name() const override { return "TessellatingPathBatch"; }
@ -1421,7 +1423,23 @@ public:
int tessellate(GrUniqueKey* key,
GrResourceProvider* resourceProvider,
SkAutoTUnref<GrVertexBuffer>& vertexBuffer) {
SkRect pathBounds = fPath.getBounds();
SkPath path;
GrStrokeInfo stroke(fStroke);
if (stroke.isDashed()) {
if (!stroke.applyDashToPath(&path, &stroke, fPath)) {
return 0;
}
} else {
path = fPath;
}
if (!stroke.isFillStyle()) {
stroke.setResScale(SkScalarAbs(fViewMatrix.getMaxScale()));
if (!stroke.applyToPath(&path, path)) {
return 0;
}
stroke.setFillStyle();
}
SkRect pathBounds = path.getBounds();
Comparator c;
if (pathBounds.width() > pathBounds.height()) {
c.sweep_lt = sweep_lt_horiz;
@ -1433,7 +1451,7 @@ public:
SkScalar screenSpaceTol = GrPathUtils::kDefaultTolerance;
SkScalar tol = GrPathUtils::scaleToleranceToSrc(screenSpaceTol, fViewMatrix, pathBounds);
int contourCnt;
int maxPts = GrPathUtils::worstCasePointCount(fPath, &contourCnt, tol);
int maxPts = GrPathUtils::worstCasePointCount(path, &contourCnt, tol);
if (maxPts <= 0) {
return 0;
}
@ -1441,7 +1459,7 @@ public:
SkDebugf("Path not rendered, too many verts (%d)\n", maxPts);
return 0;
}
SkPath::FillType fillType = fPath.getFillType();
SkPath::FillType fillType = path.getFillType();
if (SkPath::IsInverseFillType(fillType)) {
contourCnt++;
}
@ -1455,7 +1473,7 @@ public:
// connectivity of one Edge per Vertex (will grow for intersections).
SkChunkAlloc alloc(maxPts * (3 * sizeof(Vertex) + sizeof(Edge)));
bool isLinear;
path_to_contours(fPath, tol, fClipBounds, contours.get(), alloc, &isLinear);
path_to_contours(path, tol, fClipBounds, contours.get(), alloc, &isLinear);
Poly* polys;
polys = contours_to_polys(contours.get(), contourCnt, c, alloc);
int count = 0;
@ -1503,13 +1521,15 @@ public:
GrUniqueKey key;
int clipBoundsSize32 =
fPath.isInverseFillType() ? sizeof(fClipBounds) / sizeof(uint32_t) : 0;
GrUniqueKey::Builder builder(&key, kDomain, 2 + clipBoundsSize32);
int strokeDataSize32 = fStroke.computeUniqueKeyFragmentData32Cnt();
GrUniqueKey::Builder builder(&key, kDomain, 2 + clipBoundsSize32 + strokeDataSize32);
builder[0] = fPath.getGenerationID();
builder[1] = fPath.getFillType();
// For inverse fills, the tessellation is dependent on clip bounds.
if (fPath.isInverseFillType()) {
memcpy(&builder[2], &fClipBounds, sizeof(fClipBounds));
}
fStroke.asUniqueKeyFragment(&builder[2 + clipBoundsSize32]);
builder.finish();
GrResourceProvider* rp = batchTarget->resourceProvider();
SkAutoTUnref<GrVertexBuffer> vertexBuffer(rp->findAndRefTByUniqueKey<GrVertexBuffer>(key));
@ -1561,10 +1581,12 @@ public:
private:
TessellatingPathBatch(const GrColor& color,
const SkPath& path,
const GrStrokeInfo& stroke,
const SkMatrix& viewMatrix,
const SkRect& clipBounds)
: fColor(color)
, fPath(path)
, fStroke(stroke)
, fViewMatrix(viewMatrix)
, fClipBounds(clipBounds) {
this->initClassID<TessellatingPathBatch>();
@ -1575,6 +1597,7 @@ private:
GrColor fColor;
SkPath fPath;
GrStrokeInfo fStroke;
SkMatrix fViewMatrix;
SkRect fClipBounds; // in source space
GrPipelineInfo fPipelineInfo;
@ -1596,7 +1619,8 @@ bool GrTessellatingPathRenderer::onDrawPath(const DrawPathArgs& args) {
}
vmi.mapRect(&clipBounds);
SkAutoTUnref<GrBatch> batch(TessellatingPathBatch::Create(args.fColor, *args.fPath,
*args.fViewMatrix, clipBounds));
*args.fStroke, *args.fViewMatrix,
clipBounds));
args.fTarget->drawBatch(*args.fPipelineBuilder, batch);
return true;
@ -1617,7 +1641,8 @@ BATCH_TEST_DEFINE(TesselatingPathBatch) {
SkFAIL("Cannot invert matrix\n");
}
vmi.mapRect(&clipBounds);
return TessellatingPathBatch::Create(color, path, viewMatrix, clipBounds);
GrStrokeInfo strokeInfo = GrTest::TestStrokeInfo(random);
return TessellatingPathBatch::Create(color, path, strokeInfo, viewMatrix, clipBounds);
}
#endif

37
src/gpu/GrTestUtils.cpp
View File

@ -5,8 +5,10 @@
* found in the LICENSE file.
*/
#include "GrStrokeInfo.h"
#include "GrTestUtils.h"
#include "SkMatrix.h"
#include "SkPathEffect.h"
#include "SkPath.h"
#include "SkRRect.h"
@ -216,21 +218,44 @@ const SkPath& TestPathConvex(SkRandom* random) {
return gPath[random->nextULessThan(static_cast<uint32_t>(SK_ARRAY_COUNT(gPath)))];
}
SkStrokeRec TestStrokeRec(SkRandom* random) {
SkStrokeRec::InitStyle style =
SkStrokeRec::InitStyle(random->nextULessThan(SkStrokeRec::kFill_InitStyle + 1));
SkStrokeRec rec(style);
static void randomize_stroke_rec(SkStrokeRec* rec, SkRandom* random) {
bool strokeAndFill = random->nextBool();
SkScalar strokeWidth = random->nextBool() ? 0.f : 1.f;
rec.setStrokeStyle(strokeWidth, strokeAndFill);
rec->setStrokeStyle(strokeWidth, strokeAndFill);
SkPaint::Cap cap = SkPaint::Cap(random->nextULessThan(SkPaint::kCapCount));
SkPaint::Join join = SkPaint::Join(random->nextULessThan(SkPaint::kJoinCount));
SkScalar miterLimit = random->nextRangeScalar(1.f, 5.f);
rec.setStrokeParams(cap, join, miterLimit);
rec->setStrokeParams(cap, join, miterLimit);
}
SkStrokeRec TestStrokeRec(SkRandom* random) {
SkStrokeRec::InitStyle style =
SkStrokeRec::InitStyle(random->nextULessThan(SkStrokeRec::kFill_InitStyle + 1));
SkStrokeRec rec(style);
randomize_stroke_rec(&rec, random);
return rec;
}
GrStrokeInfo TestStrokeInfo(SkRandom* random) {
SkStrokeRec::InitStyle style =
SkStrokeRec::InitStyle(random->nextULessThan(SkStrokeRec::kFill_InitStyle + 1));
GrStrokeInfo strokeInfo(style);
randomize_stroke_rec(&strokeInfo, random);
SkPathEffect::DashInfo dashInfo;
dashInfo.fCount = random->nextRangeU(1, 100);
dashInfo.fIntervals = SkNEW_ARRAY(SkScalar, dashInfo.fCount);
SkScalar sum = 0;
for (int i = 0; i < dashInfo.fCount; i++) {
dashInfo.fIntervals[i] = random->nextRangeScalar(SkDoubleToScalar(0.01),
SkDoubleToScalar(10.0));
sum += dashInfo.fIntervals[i];
}
dashInfo.fPhase = random->nextRangeScalar(0, sum);
strokeInfo.setDashInfo(dashInfo);
return strokeInfo;
}
};
#endif