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Revert of Fix for degenerate stroke rect (patchset #7 id:110001 of https://codereview.chromium.org/1359453002/ )

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Reason for revert:
breaking bots

Original issue's description:
> Fix for degenerate stroke rect
>
> BUG=skia:
>
> Committed: https://skia.googlesource.com/skia/+/511684fb52f20862f8552f5009390ff3987b08d8

TBR=robertphillips@google.com,joshualitt@chromium.org
NOPRESUBMIT=true
NOTREECHECKS=true
NOTRY=true
BUG=skia:

Review URL: https://codereview.chromium.org/1356223003
This commit is contained in:
joshualitt 2015-09-22 09:48:02 -07:00 committed by Commit bot
parent 511684fb52
commit a204ceda21
3 changed files with 54 additions and 112 deletions
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96
src/gpu/batches/GrAAStrokeRectBatch.cpp
View File

@ -53,7 +53,6 @@ public:
SkRect fDevOutsideAssist;
SkRect fDevInside;
GrColor fColor;
bool fDegenerate;
};
static AAStrokeRectBatch* Create(const SkMatrix& viewMatrix, bool miterStroke) {
@ -78,19 +77,17 @@ public:
}
void append(GrColor color, const SkRect& devOutside, const SkRect& devOutsideAssist,
const SkRect& devInside, bool degenerate) {
const SkRect& devInside) {
Geometry& geometry = fGeoData.push_back();
geometry.fColor = color;
geometry.fDevOutside = devOutside;
geometry.fDevOutsideAssist = devOutsideAssist;
geometry.fDevInside = devInside;
geometry.fDegenerate = degenerate;
}
void appendAndUpdateBounds(GrColor color, const SkRect& devOutside,
const SkRect& devOutsideAssist, const SkRect& devInside,
bool degenerate) {
this->append(color, devOutside, devOutsideAssist, devInside, degenerate);
const SkRect& devOutsideAssist, const SkRect& devInside) {
this->append(color, devOutside, devOutsideAssist, devInside);
SkRect bounds;
this->updateBounds(&bounds, fGeoData.back());
@ -148,7 +145,6 @@ private:
const SkRect& devOutsideAssist,
const SkRect& devInside,
bool miterStroke,
bool degenerate,
bool tweakAlphaForCoverage) const;
struct BatchTracker {
@ -230,7 +226,6 @@ void AAStrokeRectBatch::onPrepareDraws(Target* target) {
args.fDevOutsideAssist,
args.fDevInside,
fMiterStroke,
args.fDegenerate,
canTweakAlphaForCoverage);
}
helper.recordDraw(target);
@ -361,15 +356,6 @@ bool AAStrokeRectBatch::onCombineIfPossible(GrBatch* t, const GrCaps& caps) {
return true;
}
static void setup_scale(int* scale, SkScalar inset) {
if (inset < SK_ScalarHalf) {
*scale = SkScalarFloorToInt(512.0f * inset / (inset + SK_ScalarHalf));
SkASSERT(*scale >= 0 && *scale <= 255);
} else {
*scale = 0xff;
}
}
void AAStrokeRectBatch::generateAAStrokeRectGeometry(void* vertices,
size_t offset,
size_t vertexStride,
@ -380,7 +366,6 @@ void AAStrokeRectBatch::generateAAStrokeRectGeometry(void* vertices,
const SkRect& devOutsideAssist,
const SkRect& devInside,
bool miterStroke,
bool degenerate,
bool tweakAlphaForCoverage) const {
intptr_t verts = reinterpret_cast<intptr_t>(vertices) + offset;
@ -397,9 +382,7 @@ void AAStrokeRectBatch::generateAAStrokeRectGeometry(void* vertices,
#ifndef SK_IGNORE_THIN_STROKED_RECT_FIX
// TODO: this only really works if the X & Y margins are the same all around
// the rect (or if they are all >= 1.0).
SkScalar inset;
if (!degenerate) {
inset = SkMinScalar(SK_Scalar1, devOutside.fRight - devInside.fRight);
SkScalar inset = SkMinScalar(SK_Scalar1, devOutside.fRight - devInside.fRight);
inset = SkMinScalar(inset, devInside.fLeft - devOutside.fLeft);
inset = SkMinScalar(inset, devInside.fTop - devOutside.fTop);
if (miterStroke) {
@ -409,22 +392,8 @@ void AAStrokeRectBatch::generateAAStrokeRectGeometry(void* vertices,
devInside.fBottom);
}
SkASSERT(inset >= 0);
} else {
// TODO use real devRect here
inset = SkMinScalar(devOutside.width(), SK_Scalar1);
inset = SK_ScalarHalf * SkMinScalar(inset, SkTMax(devOutside.height(),
devOutsideAssist.height()));
}
#else
SkScalar inset;
if (!degenerate) {
inset = SK_ScalarHalf;
} else {
// TODO use real devRect here
inset = SkMinScalar(devOutside.width(), SK_Scalar1);
inset = SK_ScalarHalf * SkMinScalar(inset, SkTMax(devOutside.height(),
devOutsideAssist.height()));
}
SkScalar inset = SK_ScalarHalf;
#endif
if (miterStroke) {
@ -432,19 +401,9 @@ void AAStrokeRectBatch::generateAAStrokeRectGeometry(void* vertices,
set_inset_fan(fan0Pos, vertexStride, devOutside, -SK_ScalarHalf, -SK_ScalarHalf);
// inner two
set_inset_fan(fan1Pos, vertexStride, devOutside, inset, inset);
if (!degenerate) {
set_inset_fan(fan2Pos, vertexStride, devInside, -inset, -inset);
// innermost
set_inset_fan(fan3Pos, vertexStride, devInside, SK_ScalarHalf, SK_ScalarHalf);
} else {
// When the interior rect has become degenerate we smoosh to a single point
SkASSERT(devInside.fLeft == devInside.fRight &&
devInside.fTop == devInside.fBottom);
fan2Pos->setRectFan(devInside.fLeft, devInside.fTop,
devInside.fRight, devInside.fBottom, vertexStride);
fan3Pos->setRectFan(devInside.fLeft, devInside.fTop,
devInside.fRight, devInside.fBottom, vertexStride);
}
} else {
SkPoint* fan0AssistPos = reinterpret_cast<SkPoint*>(verts + 4 * vertexStride);
SkPoint* fan1AssistPos = reinterpret_cast<SkPoint*>(verts +
@ -457,20 +416,10 @@ void AAStrokeRectBatch::generateAAStrokeRectGeometry(void* vertices,
// outer one of the inner two
set_inset_fan(fan1Pos, vertexStride, devOutside, inset, inset);
set_inset_fan(fan1AssistPos, vertexStride, devOutsideAssist, inset, inset);
if (!degenerate) {
// inner one of the inner two
set_inset_fan(fan2Pos, vertexStride, devInside, -inset, -inset);
// innermost
set_inset_fan(fan3Pos, vertexStride, devInside, SK_ScalarHalf, SK_ScalarHalf);
} else {
// When the interior rect has become degenerate we smoosh to a single point
SkASSERT(devInside.fLeft == devInside.fRight &&
devInside.fTop == devInside.fBottom);
fan2Pos->setRectFan(devInside.fLeft, devInside.fTop,
devInside.fRight, devInside.fBottom, vertexStride);
fan3Pos->setRectFan(devInside.fLeft, devInside.fTop,
devInside.fRight, devInside.fBottom, vertexStride);
}
}
// Make verts point to vertex color and then set all the color and coverage vertex attrs
@ -487,7 +436,12 @@ void AAStrokeRectBatch::generateAAStrokeRectGeometry(void* vertices,
// scale is the coverage for the the inner two rects.
int scale;
setup_scale(&scale, inset);
if (inset < SK_ScalarHalf) {
scale = SkScalarFloorToInt(512.0f * inset / (inset + SK_ScalarHalf));
SkASSERT(scale >= 0 && scale <= 255);
} else {
scale = 0xff;
}
float innerCoverage = GrNormalizeByteToFloat(scale);
GrColor scaledColor = (0xff == scale) ? color : SkAlphaMulQ(color, scale);
@ -498,24 +452,19 @@ void AAStrokeRectBatch::generateAAStrokeRectGeometry(void* vertices,
*reinterpret_cast<GrColor*>(verts + i * vertexStride) = scaledColor;
} else {
*reinterpret_cast<GrColor*>(verts + i * vertexStride) = color;
*reinterpret_cast<float*>(verts + i * vertexStride + sizeof(GrColor)) = innerCoverage;
*reinterpret_cast<float*>(verts + i * vertexStride + sizeof(GrColor)) =
innerCoverage;
}
}
// The innermost rect has 0 coverage, unless we are degenerate, in which case we must apply the
// scaled coverage
// The innermost rect has 0 coverage
verts += (outerVertexNum + innerVertexNum) * vertexStride;
if (!degenerate) {
innerCoverage = 0;
scaledColor = 0;
}
for (int i = 0; i < innerVertexNum; ++i) {
if (tweakAlphaForCoverage) {
*reinterpret_cast<GrColor*>(verts + i * vertexStride) = scaledColor;
*reinterpret_cast<GrColor*>(verts + i * vertexStride) = 0;
} else {
*reinterpret_cast<GrColor*>(verts + i * vertexStride) = color;
*reinterpret_cast<float*>(verts + i * vertexStride + sizeof(GrColor)) = innerCoverage;
*reinterpret_cast<GrColor*>(verts + i * vertexStride + sizeof(GrColor)) = 0;
}
}
}
@ -527,10 +476,9 @@ GrDrawBatch* Create(GrColor color,
const SkRect& devOutside,
const SkRect& devOutsideAssist,
const SkRect& devInside,
bool miterStroke,
bool degenerate) {
bool miterStroke) {
AAStrokeRectBatch* batch = AAStrokeRectBatch::Create(viewMatrix, miterStroke);
batch->append(color, devOutside, devOutsideAssist, devInside, degenerate);
batch->append(color, devOutside, devOutsideAssist, devInside);
batch->init();
return batch;
}
@ -541,8 +489,7 @@ bool Append(GrBatch* origBatch,
const SkRect& devOutside,
const SkRect& devOutsideAssist,
const SkRect& devInside,
bool miterStroke,
bool degenerate) {
bool miterStroke) {
AAStrokeRectBatch* batch = origBatch->cast<AAStrokeRectBatch>();
// we can't batch across vm changes
@ -550,7 +497,7 @@ bool Append(GrBatch* origBatch,
return false;
}
batch->appendAndUpdateBounds(color, devOutside, devOutsideAssist, devInside, degenerate);
batch->appendAndUpdateBounds(color, devOutside, devOutsideAssist, devInside);
return true;
}
@ -564,7 +511,6 @@ bool Append(GrBatch* origBatch,
DRAW_BATCH_TEST_DEFINE(AAStrokeRectBatch) {
bool miterStroke = random->nextBool();
bool degenerate = random->nextBool();
// Create mock stroke rect
SkRect outside = GrTest::TestRect(random);
@ -578,7 +524,7 @@ DRAW_BATCH_TEST_DEFINE(AAStrokeRectBatch) {
GrColor color = GrRandomColor(random);
return GrAAStrokeRectBatch::Create(color, GrTest::TestMatrix(random), outside, outsideAssist,
inside, degenerate, miterStroke);
inside, miterStroke);
}
#endif

6
src/gpu/batches/GrAAStrokeRectBatch.h
View File

@ -23,8 +23,7 @@ GrDrawBatch* Create(GrColor color,
const SkRect& devOutside,
const SkRect& devOutsideAssist,
const SkRect& devInside,
bool miterStroke,
bool degenerate);
bool miterStroke);
bool Append(GrBatch*,
GrColor color,
@ -32,8 +31,7 @@ bool Append(GrBatch*,
const SkRect& devOutside,
const SkRect& devOutsideAssist,
const SkRect& devInside,
bool miterStroke,
bool degenerate);
bool miterStroke);
};

36
src/gpu/batches/GrRectBatchFactory.cpp
View File

@ -33,6 +33,13 @@ GrDrawBatch* CreateAAStroke(GrColor color,
const SkScalar rx = SkScalarMul(dx, SK_ScalarHalf);
const SkScalar ry = SkScalarMul(dy, SK_ScalarHalf);
SkScalar spare;
{
SkScalar w = devRect.width() - dx;
SkScalar h = devRect.height() - dy;
spare = SkTMin(w, h);
}
SkRect devOutside(devRect);
devOutside.outset(rx, ry);
@ -44,25 +51,13 @@ GrDrawBatch* CreateAAStroke(GrColor color,
miterStroke = false;
}
if (spare <= 0 && miterStroke) {
return CreateAAFill(color, viewMatrix, devOutside, devOutside);
}
SkRect devInside(devRect);
devInside.inset(rx, ry);
// If we have a degenerate stroking rect(ie the stroke is larger than inner rect) then we
// make a degenerate inside rect to avoid double hitting. We will also jam all of the points
// together when we render these rects.
SkScalar spare;
{
SkScalar w = devRect.width() - dx;
SkScalar h = devRect.height() - dy;
spare = SkTMin(w, h);
}
bool degenerate = spare <= 0;
if (degenerate) {
devInside.fLeft = devInside.fRight = devRect.centerX();
devInside.fTop = devInside.fBottom = devRect.centerY();
}
SkRect devOutsideAssist(devRect);
// For bevel-stroke, use 2 SkRect instances(devOutside and devOutsideAssist)
@ -74,7 +69,7 @@ GrDrawBatch* CreateAAStroke(GrColor color,
}
return GrAAStrokeRectBatch::Create(color, viewMatrix, devOutside, devOutsideAssist, devInside,
miterStroke, degenerate);
miterStroke);
}
GrDrawBatch* CreateAAFillNestedRects(GrColor color,
@ -87,8 +82,11 @@ GrDrawBatch* CreateAAFillNestedRects(GrColor color,
viewMatrix.mapRect(&devOutside, rects[0]);
viewMatrix.mapRect(&devInside, rects[1]);
return GrAAStrokeRectBatch::Create(color, viewMatrix, devOutside, devOutside, devInside, true,
devInside.isEmpty());
if (devInside.isEmpty()) {
return CreateAAFill(color, viewMatrix, devOutside, devOutside);
}
return GrAAStrokeRectBatch::Create(color, viewMatrix, devOutside, devOutside, devInside, true);
}
};