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Update several more oval ops to use WriteVertexData

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Use shared octagon vertex data, remove some vertex structs
entirely.

Bug: skia:
Change-Id: Ia717bac85de7084a982f0d10d932ea91f04f36f4
Reviewed-on: https://skia-review.googlesource.com/c/169820
Reviewed-by: Brian Salomon <bsalomon@google.com>
Commit-Queue: Brian Osman <brianosman@google.com>
This commit is contained in:
Brian Osman 2018-11-13 12:46:56 -05:00 committed by Skia Commit-Bot
parent 5a0dddc3d4
commit 9d958b54af
1 changed files with 127 additions and 175 deletions
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302
src/gpu/ops/GrOvalOpFactory.cpp
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@ -37,13 +37,6 @@ struct EllipseVertex {
SkPoint fInnerRadii;
};
struct DIEllipseVertex {
SkPoint fPos;
GrColor fColor;
SkPoint fOuterOffset;
SkPoint fInnerOffset;
};
static inline bool circle_stays_circle(const SkMatrix& m) { return m.isSimilarity(); }
}
@ -843,6 +836,33 @@ static const uint16_t gStrokeCircleIndices[] = {
// clang-format on
};
// Normalized geometry for octagons that circumscribe and lie on a circle:
static constexpr SkScalar kOctOffset = 0.41421356237f; // sqrt(2) - 1
static constexpr SkPoint kOctagonOuter[] = {
SkPoint::Make(-kOctOffset, -1),
SkPoint::Make( kOctOffset, -1),
SkPoint::Make( 1, -kOctOffset),
SkPoint::Make( 1, kOctOffset),
SkPoint::Make( kOctOffset, 1),
SkPoint::Make(-kOctOffset, 1),
SkPoint::Make(-1, kOctOffset),
SkPoint::Make(-1, -kOctOffset),
};
// cosine and sine of pi/8
static constexpr SkScalar kCosPi8 = 0.923579533f;
static constexpr SkScalar kSinPi8 = 0.382683432f;
static constexpr SkPoint kOctagonInner[] = {
SkPoint::Make(-kSinPi8, -kCosPi8),
SkPoint::Make( kSinPi8, -kCosPi8),
SkPoint::Make( kCosPi8, -kSinPi8),
SkPoint::Make( kCosPi8, kSinPi8),
SkPoint::Make( kSinPi8, kCosPi8),
SkPoint::Make(-kSinPi8, kCosPi8),
SkPoint::Make(-kCosPi8, kSinPi8),
SkPoint::Make(-kCosPi8, -kSinPi8),
};
static const int kIndicesPerFillCircle = SK_ARRAY_COUNT(gFillCircleIndices);
static const int kIndicesPerStrokeCircle = SK_ARRAY_COUNT(gStrokeCircleIndices);
@ -1141,12 +1161,10 @@ private:
sk_sp<GrGeometryProcessor> gp(new CircleGeometryProcessor(
!fAllFill, fClipPlane, fClipPlaneIsect, fClipPlaneUnion, fRoundCaps, localMatrix));
size_t vertexStride = gp->vertexStride();
const GrBuffer* vertexBuffer;
int firstVertex;
void* vertices = (char*)target->makeVertexSpace(vertexStride, fVertCount, &vertexBuffer,
&firstVertex);
void* vertices = target->makeVertexSpace(gp->vertexStride(), fVertCount, &vertexBuffer,
&firstVertex);
if (!vertices) {
SkDebugf("Could not allocate vertices\n");
return;
@ -1189,23 +1207,11 @@ private:
offsetClipDist = 0.5f / halfWidth;
}
constexpr SkScalar octOffset = 0.41421356237f; // sqrt(2) - 1
static constexpr SkPoint kOffsets[] = {
SkPoint::Make(-octOffset, -1),
SkPoint::Make(octOffset, -1),
SkPoint::Make(1, -octOffset),
SkPoint::Make(1, octOffset),
SkPoint::Make(octOffset, 1),
SkPoint::Make(-octOffset, 1),
SkPoint::Make(-1, octOffset),
SkPoint::Make(-1, -octOffset),
};
for (int i = 0; i < 8; ++i) {
// This clips the normalized offset to the half-plane we computed above. Then we
// compute the vertex position from this.
SkScalar dist = SkTMin(kOffsets[i].dot(geoClipPlane) + offsetClipDist, 0.0f);
SkVector offset = kOffsets[i] - geoClipPlane * dist;
SkScalar dist = SkTMin(kOctagonOuter[i].dot(geoClipPlane) + offsetClipDist, 0.0f);
SkVector offset = kOctagonOuter[i] - geoClipPlane * dist;
vertices = WriteVertexData(vertices, center + offset * halfWidth, color, offset,
outerRadius, innerRadius);
if (fClipPlane) {
@ -1225,25 +1231,11 @@ private:
if (circle.fStroked) {
// compute the inner ring
// cosine and sine of pi/8
constexpr SkScalar c = 0.923579533f;
constexpr SkScalar s = 0.382683432f;
static constexpr SkPoint kRingPoints[] = {
SkPoint::Make( -s, -c ),
SkPoint::Make( s, -c ),
SkPoint::Make( c, -s ),
SkPoint::Make( c, s ),
SkPoint::Make( s, c ),
SkPoint::Make( -s, c ),
SkPoint::Make( -c, s ),
SkPoint::Make( -c, -s ),
};
for (int i = 0; i < 8; ++i) {
vertices = WriteVertexData(vertices,
center + kRingPoints[i] * circle.fInnerRadius,
center + kOctagonInner[i] * circle.fInnerRadius,
color,
kRingPoints[i] * innerRadius,
kOctagonInner[i] * innerRadius,
outerRadius, innerRadius);
if (fClipPlane) {
vertices = WriteVertexData(vertices, circle.fClipPlane);
@ -1488,25 +1480,10 @@ private:
// Setup geometry processor
sk_sp<GrGeometryProcessor> gp(new ButtCapDashedCircleGeometryProcessor(localMatrix));
struct CircleVertex {
SkPoint fPos;
GrColor fColor;
SkPoint fOffset;
SkScalar fOuterRadius;
SkScalar fInnerRadius;
SkScalar fOnAngle;
SkScalar fTotalAngle;
SkScalar fStartAngle;
SkScalar fPhaseAngle;
};
static constexpr size_t kVertexStride = sizeof(CircleVertex);
SkASSERT(kVertexStride == gp->vertexStride());
const GrBuffer* vertexBuffer;
int firstVertex;
char* vertices = (char*)target->makeVertexSpace(kVertexStride, fVertCount, &vertexBuffer,
&firstVertex);
void* vertices = target->makeVertexSpace(gp->vertexStride(), fVertCount, &vertexBuffer,
&firstVertex);
if (!vertices) {
SkDebugf("Could not allocate vertices\n");
return;
@ -1528,10 +1505,13 @@ private:
auto normInnerRadius = circle.fInnerRadius / circle.fOuterRadius;
const SkRect& bounds = circle.fDevBounds;
bool reflect = false;
SkScalar totalAngle = circle.fTotalAngle;
if (totalAngle < 0) {
struct { float onAngle, totalAngle, startAngle, phaseAngle; } dashParams = {
circle.fOnAngle, circle.fTotalAngle, circle.fStartAngle, circle.fPhaseAngle
};
if (dashParams.totalAngle < 0) {
reflect = true;
totalAngle = -totalAngle;
dashParams.totalAngle = -dashParams.totalAngle;
dashParams.startAngle = -dashParams.startAngle;
}
// TODO4F: Preserve float colors
@ -1540,61 +1520,34 @@ private:
// The bounding geometry for the circle is composed of an outer bounding octagon and
// an inner bounded octagon.
// Initializes the attributes that are the same at each vertex. Also applies reflection.
auto init_const_attrs_and_reflect = [&](CircleVertex* v) {
v->fColor = color;
v->fOuterRadius = circle.fOuterRadius;
v->fInnerRadius = normInnerRadius;
v->fOnAngle = circle.fOnAngle;
v->fTotalAngle = totalAngle;
v->fStartAngle = circle.fStartAngle;
v->fPhaseAngle = circle.fPhaseAngle;
if (reflect) {
v->fStartAngle = -v->fStartAngle;
v->fOffset.fY = -v->fOffset.fY;
}
};
// Compute the vertices of the outer octagon.
SkPoint center = SkPoint::Make(bounds.centerX(), bounds.centerY());
SkScalar halfWidth = 0.5f * bounds.width();
auto init_outer_vertex = [&](int idx, SkScalar x, SkScalar y) {
CircleVertex* v = reinterpret_cast<CircleVertex*>(vertices + idx * kVertexStride);
v->fPos = center + SkPoint{x * halfWidth, y * halfWidth};
v->fOffset = {x, y};
init_const_attrs_and_reflect(v);
auto reflectY = [=](const SkPoint& p) {
return SkPoint{ p.fX, reflect ? -p.fY : p.fY };
};
static constexpr SkScalar kOctOffset = 0.41421356237f; // sqrt(2) - 1
init_outer_vertex(0, -kOctOffset, -1);
init_outer_vertex(1, kOctOffset, -1);
init_outer_vertex(2, 1, -kOctOffset);
init_outer_vertex(3, 1, kOctOffset);
init_outer_vertex(4, kOctOffset, 1);
init_outer_vertex(5, -kOctOffset, 1);
init_outer_vertex(6, -1, kOctOffset);
init_outer_vertex(7, -1, -kOctOffset);
for (int i = 0; i < 8; ++i) {
vertices = WriteVertexData(vertices,
center + kOctagonOuter[i] * halfWidth,
color,
reflectY(kOctagonOuter[i]),
circle.fOuterRadius,
normInnerRadius,
dashParams);
}
// Compute the vertices of the inner octagon.
auto init_inner_vertex = [&](int idx, SkScalar x, SkScalar y) {
CircleVertex* v =
reinterpret_cast<CircleVertex*>(vertices + (idx + 8) * kVertexStride);
v->fPos = center + SkPoint{x * circle.fInnerRadius, y * circle.fInnerRadius};
v->fOffset = {x * normInnerRadius, y * normInnerRadius};
init_const_attrs_and_reflect(v);
};
// cosine and sine of pi/8
static constexpr SkScalar kCos = 0.923579533f;
static constexpr SkScalar kSin = 0.382683432f;
init_inner_vertex(0, -kSin, -kCos);
init_inner_vertex(1, kSin, -kCos);
init_inner_vertex(2, kCos, -kSin);
init_inner_vertex(3, kCos, kSin);
init_inner_vertex(4, kSin, kCos);
init_inner_vertex(5, -kSin, kCos);
init_inner_vertex(6, -kCos, kSin);
init_inner_vertex(7, -kCos, -kSin);
for (int i = 0; i < 8; ++i) {
vertices = WriteVertexData(vertices,
center + kOctagonInner[i] * circle.fInnerRadius,
color,
reflectY(kOctagonInner[i]) * normInnerRadius,
circle.fOuterRadius,
normInnerRadius,
dashParams);
}
const uint16_t* primIndices = circle_type_to_indices(true);
const int primIndexCount = circle_type_to_index_count(true);
@ -1603,7 +1556,6 @@ private:
}
currStartVertex += circle_type_to_vert_count(true);
vertices += circle_type_to_vert_count(true) * kVertexStride;
}
GrMesh* mesh = target->allocMesh(GrPrimitiveType::kTriangles);
@ -1805,10 +1757,8 @@ private:
// Setup geometry processor
sk_sp<GrGeometryProcessor> gp(new EllipseGeometryProcessor(fStroked, localMatrix));
SkASSERT(sizeof(EllipseVertex) == gp->vertexStride());
QuadHelper helper(target, sizeof(EllipseVertex), fEllipses.count());
EllipseVertex* verts = reinterpret_cast<EllipseVertex*>(helper.vertices());
QuadHelper helper(target, gp->vertexStride(), fEllipses.count());
void* verts = helper.vertices();
if (!verts) {
return;
}
@ -1818,12 +1768,15 @@ private:
GrColor color = ellipse.fColor.toBytes_RGBA();
SkScalar xRadius = ellipse.fXRadius;
SkScalar yRadius = ellipse.fYRadius;
const SkRect& bounds = ellipse.fDevBounds;
// Compute the reciprocals of the radii here to save time in the shader
SkScalar xRadRecip = SkScalarInvert(xRadius);
SkScalar yRadRecip = SkScalarInvert(yRadius);
SkScalar xInnerRadRecip = SkScalarInvert(ellipse.fInnerXRadius);
SkScalar yInnerRadRecip = SkScalarInvert(ellipse.fInnerYRadius);
struct { float xOuter, yOuter, xInner, yInner; } invRadii = {
SkScalarInvert(xRadius),
SkScalarInvert(yRadius),
SkScalarInvert(ellipse.fInnerXRadius),
SkScalarInvert(ellipse.fInnerYRadius)
};
SkScalar xMaxOffset = xRadius + SK_ScalarHalf;
SkScalar yMaxOffset = yRadius + SK_ScalarHalf;
@ -1835,31 +1788,29 @@ private:
}
// The inner radius in the vertex data must be specified in normalized space.
verts[0].fPos = SkPoint::Make(ellipse.fDevBounds.fLeft, ellipse.fDevBounds.fTop);
verts[0].fColor = color;
verts[0].fOffset = SkPoint::Make(-xMaxOffset, -yMaxOffset);
verts[0].fOuterRadii = SkPoint::Make(xRadRecip, yRadRecip);
verts[0].fInnerRadii = SkPoint::Make(xInnerRadRecip, yInnerRadRecip);
verts = WriteVertexData(verts,
SkPoint::Make(bounds.fLeft, bounds.fTop),
color,
SkPoint::Make(-xMaxOffset, -yMaxOffset),
invRadii);
verts[1].fPos = SkPoint::Make(ellipse.fDevBounds.fLeft, ellipse.fDevBounds.fBottom);
verts[1].fColor = color;
verts[1].fOffset = SkPoint::Make(-xMaxOffset, yMaxOffset);
verts[1].fOuterRadii = SkPoint::Make(xRadRecip, yRadRecip);
verts[1].fInnerRadii = SkPoint::Make(xInnerRadRecip, yInnerRadRecip);
verts = WriteVertexData(verts,
SkPoint::Make(bounds.fLeft, bounds.fBottom),
color,
SkPoint::Make(-xMaxOffset, yMaxOffset),
invRadii);
verts[2].fPos = SkPoint::Make(ellipse.fDevBounds.fRight, ellipse.fDevBounds.fTop);
verts[2].fColor = color;
verts[2].fOffset = SkPoint::Make(xMaxOffset, -yMaxOffset);
verts[2].fOuterRadii = SkPoint::Make(xRadRecip, yRadRecip);
verts[2].fInnerRadii = SkPoint::Make(xInnerRadRecip, yInnerRadRecip);
verts = WriteVertexData(verts,
SkPoint::Make(bounds.fRight, bounds.fTop),
color,
SkPoint::Make(xMaxOffset, -yMaxOffset),
invRadii);
verts[3].fPos = SkPoint::Make(ellipse.fDevBounds.fRight, ellipse.fDevBounds.fBottom);
verts[3].fColor = color;
verts[3].fOffset = SkPoint::Make(xMaxOffset, yMaxOffset);
verts[3].fOuterRadii = SkPoint::Make(xRadRecip, yRadRecip);
verts[3].fInnerRadii = SkPoint::Make(xInnerRadRecip, yInnerRadRecip);
verts += kVerticesPerQuad;
verts = WriteVertexData(verts,
SkPoint::Make(bounds.fRight, bounds.fBottom),
color,
SkPoint::Make(xMaxOffset, yMaxOffset),
invRadii);
}
auto pipe = fHelper.makePipeline(target);
helper.recordDraw(target, std::move(gp), pipe.fPipeline, pipe.fFixedDynamicState);
@ -2041,9 +1992,8 @@ private:
sk_sp<GrGeometryProcessor> gp(
new DIEllipseGeometryProcessor(this->viewMatrix(), this->style()));
SkASSERT(sizeof(DIEllipseVertex) == gp->vertexStride());
QuadHelper helper(target, sizeof(DIEllipseVertex), fEllipses.count());
DIEllipseVertex* verts = reinterpret_cast<DIEllipseVertex*>(helper.vertices());
QuadHelper helper(target, gp->vertexStride(), fEllipses.count());
void* verts = helper.vertices();
if (!verts) {
return;
}
@ -2060,41 +2010,43 @@ private:
SkScalar offsetDx = ellipse.fGeoDx / xRadius;
SkScalar offsetDy = ellipse.fGeoDy / yRadius;
verts[0].fPos = SkPoint::Make(bounds.fLeft, bounds.fTop);
verts[0].fColor = color;
verts[0].fOuterOffset = SkPoint::Make(-1.0f - offsetDx, -1.0f - offsetDy);
verts[0].fInnerOffset = SkPoint::Make(0.0f, 0.0f);
verts[1].fPos = SkPoint::Make(bounds.fLeft, bounds.fBottom);
verts[1].fColor = color;
verts[1].fOuterOffset = SkPoint::Make(-1.0f - offsetDx, 1.0f + offsetDy);
verts[1].fInnerOffset = SkPoint::Make(0.0f, 0.0f);
verts[2].fPos = SkPoint::Make(bounds.fRight, bounds.fTop);
verts[2].fColor = color;
verts[2].fOuterOffset = SkPoint::Make(1.0f + offsetDx, -1.0f - offsetDy);
verts[2].fInnerOffset = SkPoint::Make(0.0f, 0.0f);
verts[3].fPos = SkPoint::Make(bounds.fRight, bounds.fBottom);
verts[3].fColor = color;
verts[3].fOuterOffset = SkPoint::Make(1.0f + offsetDx, 1.0f + offsetDy);
verts[3].fInnerOffset = SkPoint::Make(0.0f, 0.0f);
// By default, constructed so that inner offset is (0, 0) for all points
SkScalar innerRatioX = -offsetDx;
SkScalar innerRatioY = -offsetDy;
// ... unless we're stroked
if (DIEllipseStyle::kStroke == this->style()) {
SkScalar innerRatioX = xRadius / ellipse.fInnerXRadius;
SkScalar innerRatioY = yRadius / ellipse.fInnerYRadius;
verts[0].fInnerOffset = SkPoint::Make(-innerRatioX - offsetDx,
-innerRatioY - offsetDy);
verts[1].fInnerOffset = SkPoint::Make(-innerRatioX - offsetDx,
innerRatioY + offsetDy);
verts[2].fInnerOffset = SkPoint::Make(innerRatioX + offsetDx,
-innerRatioY - offsetDy);
verts[3].fInnerOffset = SkPoint::Make(innerRatioX + offsetDx,
innerRatioY + offsetDy);
innerRatioX = xRadius / ellipse.fInnerXRadius;
innerRatioY = yRadius / ellipse.fInnerYRadius;
}
verts += kVerticesPerQuad;
verts = WriteVertexData(verts,
SkPoint::Make(bounds.fLeft, bounds.fTop),
color,
SkPoint::Make(-1.0f - offsetDx, -1.0f - offsetDy),
SkPoint::Make(-innerRatioX - offsetDx,
-innerRatioY - offsetDy));
verts = WriteVertexData(verts,
SkPoint::Make(bounds.fLeft, bounds.fBottom),
color,
SkPoint::Make(-1.0f - offsetDx, 1.0f + offsetDy),
SkPoint::Make(-innerRatioX - offsetDx,
innerRatioY + offsetDy));
verts = WriteVertexData(verts,
SkPoint::Make(bounds.fRight, bounds.fTop),
color,
SkPoint::Make(1.0f + offsetDx, -1.0f - offsetDy),
SkPoint::Make( innerRatioX + offsetDx,
-innerRatioY - offsetDy));
verts = WriteVertexData(verts,
SkPoint::Make(bounds.fRight, bounds.fBottom),
color,
SkPoint::Make(1.0f + offsetDx, 1.0f + offsetDy),
SkPoint::Make(innerRatioX + offsetDx,
innerRatioY + offsetDy));
}
auto pipe = fHelper.makePipeline(target);
helper.recordDraw(target, std::move(gp), pipe.fPipeline, pipe.fFixedDynamicState);