void drawVertices(Target* target, const GrGeometryProcessor* gp, const GrBuffer* vb,
int firstVertex, int count) const {
SkASSERT(gp->getVertexStride() == sizeof(SkPoint));
GrPrimitiveType primitiveType = TESSELLATOR_WIREFRAME ? kLines_GrPrimitiveType
: kTriangles_GrPrimitiveType;
GrMesh mesh;
mesh.init(primitiveType, vb, firstVertex, count);
target->draw(gp, mesh);
}
void onPrepareDraws(Target* target) const override {
sk_sp<GrGeometryProcessor> gp;
{
using namespace GrDefaultGeoProcFactory;
Color color(this->color());
Coverage coverage(this->coverageIgnored() ? Coverage::kSolid_Type :
Coverage::kNone_Type);
LocalCoords localCoords(this->usesLocalCoords() ? LocalCoords::kUsePosition_Type :
LocalCoords::kUnused_Type);
gp = GrDefaultGeoProcFactory::Make(color, coverage, localCoords, this->viewMatrix());
}
size_t vertexStride = gp->getVertexStride();
SkASSERT(vertexStride == sizeof(GrDefaultGeoProcFactory::PositionAttr));
const Geometry& args = fGeoData[0];
int vertexCount = kVertsPerHairlineRect;
if (args.fStrokeWidth > 0) {
vertexCount = kVertsPerStrokeRect;
}
const GrBuffer* vertexBuffer;
int firstVertex;
void* verts = target->makeVertexSpace(vertexStride, vertexCount, &vertexBuffer,
&firstVertex);
if (!verts) {
SkDebugf("Could not allocate vertices\n");
return;
}
SkPoint* vertex = reinterpret_cast<SkPoint*>(verts);
GrPrimitiveType primType;
if (args.fStrokeWidth > 0) {
primType = kTriangleStrip_GrPrimitiveType;
init_stroke_rect_strip(vertex, args.fRect, args.fStrokeWidth);
} else {
// hairline
primType = kLineStrip_GrPrimitiveType;
vertex[0].set(args.fRect.fLeft, args.fRect.fTop);
vertex[1].set(args.fRect.fRight, args.fRect.fTop);
vertex[2].set(args.fRect.fRight, args.fRect.fBottom);
vertex[3].set(args.fRect.fLeft, args.fRect.fBottom);
vertex[4].set(args.fRect.fLeft, args.fRect.fTop);
}
GrMesh mesh;
mesh.init(primType, vertexBuffer, firstVertex, vertexCount);
target->draw(gp.get(), mesh);
}
void onPrepareDraws(Target* target) const override {
sk_sp<GrGeometryProcessor> gp;
{
using namespace GrDefaultGeoProcFactory;
Color color(this->color());
Coverage coverage(this->coverage());
if (this->coverageIgnored()) {
coverage.fType = Coverage::kNone_Type;
}
LocalCoords localCoords(this->usesLocalCoords() ? LocalCoords::kUsePosition_Type :
LocalCoords::kUnused_Type);
gp = GrDefaultGeoProcFactory::Make(color, coverage, localCoords, this->viewMatrix());
}
size_t vertexStride = gp->getVertexStride();
SkASSERT(vertexStride == sizeof(SkPoint));
int instanceCount = fGeoData.count();
// compute number of vertices
int maxVertices = 0;
// We will use index buffers if we have multiple paths or one path with multiple contours
bool isIndexed = instanceCount > 1;
for (int i = 0; i < instanceCount; i++) {
const Geometry& args = fGeoData[i];
int contourCount;
maxVertices += GrPathUtils::worstCasePointCount(args.fPath, &contourCount,
args.fTolerance);
isIndexed = isIndexed || contourCount > 1;
}
if (maxVertices == 0 || maxVertices > ((int)SK_MaxU16 + 1)) {
//SkDebugf("Cannot render path (%d)\n", maxVertices);
return;
}
// determine primitiveType
int maxIndices = 0;
GrPrimitiveType primitiveType;
if (this->isHairline()) {
if (isIndexed) {
maxIndices = 2 * maxVertices;
primitiveType = kLines_GrPrimitiveType;
} else {
primitiveType = kLineStrip_GrPrimitiveType;
}
} else {
if (isIndexed) {
maxIndices = 3 * maxVertices;
primitiveType = kTriangles_GrPrimitiveType;
} else {
primitiveType = kTriangleFan_GrPrimitiveType;
}
}
// allocate vertex / index buffers
const GrBuffer* vertexBuffer;
int firstVertex;
void* verts = target->makeVertexSpace(vertexStride, maxVertices,
&vertexBuffer, &firstVertex);
if (!verts) {
SkDebugf("Could not allocate vertices\n");
return;
}
const GrBuffer* indexBuffer = nullptr;
int firstIndex = 0;
void* indices = nullptr;
if (isIndexed) {
indices = target->makeIndexSpace(maxIndices, &indexBuffer, &firstIndex);
if (!indices) {
SkDebugf("Could not allocate indices\n");
return;
}
}
// fill buffers
int vertexOffset = 0;
int indexOffset = 0;
for (int i = 0; i < instanceCount; i++) {
const Geometry& args = fGeoData[i];
int vertexCnt = 0;
int indexCnt = 0;
if (!this->createGeom(verts,
vertexOffset,
indices,
indexOffset,
&vertexCnt,
&indexCnt,
args.fPath,
args.fTolerance,
isIndexed)) {
return;
}
vertexOffset += vertexCnt;
indexOffset += indexCnt;
SkASSERT(vertexOffset <= maxVertices && indexOffset <= maxIndices);
}
GrMesh mesh;
if (isIndexed) {
mesh.initIndexed(primitiveType, vertexBuffer, indexBuffer, firstVertex, firstIndex,
vertexOffset, indexOffset);
} else {
mesh.init(primitiveType, vertexBuffer, firstVertex, vertexOffset);
}
target->draw(gp.get(), mesh);
// put back reserves
target->putBackIndices((size_t)(maxIndices - indexOffset));
target->putBackVertices((size_t)(maxVertices - vertexOffset), (size_t)vertexStride);
}
void onPrepareDraws(Target* target) const override {
SkMatrix invert;
if (fUsesLocalCoords && !fViewMatrix.invert(&invert)) {
SkDebugf("Could not invert viewmatrix\n");
return;
}
// Setup GrGeometryProcessors
SkAutoTUnref<GrPLSGeometryProcessor> triangleProcessor(
PLSAATriangleEffect::Create(invert, fUsesLocalCoords));
SkAutoTUnref<GrPLSGeometryProcessor> quadProcessor(
PLSQuadEdgeEffect::Create(invert, fUsesLocalCoords));
GrResourceProvider* rp = target->resourceProvider();
SkRect bounds;
this->bounds().roundOut(&bounds);
triangleProcessor->setBounds(bounds);
quadProcessor->setBounds(bounds);
// We use the fact that SkPath::transform path does subdivision based on
// perspective. Otherwise, we apply the view matrix when copying to the
// segment representation.
const SkMatrix* viewMatrix = &fViewMatrix;
// We avoid initializing the path unless we have to
const SkPath* pathPtr = &fPath;
SkTLazy<SkPath> tmpPath;
if (viewMatrix->hasPerspective()) {
SkPath* tmpPathPtr = tmpPath.init(*pathPtr);
tmpPathPtr->setIsVolatile(true);
tmpPathPtr->transform(*viewMatrix);
viewMatrix = &SkMatrix::I();
pathPtr = tmpPathPtr;
}
GrMesh mesh;
PLSVertices triVertices;
PLSVertices quadVertices;
if (!get_geometry(*pathPtr, *viewMatrix, triVertices, quadVertices, rp, bounds)) {
return;
}
if (triVertices.count()) {
const GrBuffer* triVertexBuffer;
int firstTriVertex;
size_t triStride = triangleProcessor->getVertexStride();
PLSVertex* triVerts = reinterpret_cast<PLSVertex*>(target->makeVertexSpace(
triStride, triVertices.count(), &triVertexBuffer, &firstTriVertex));
if (!triVerts) {
SkDebugf("Could not allocate vertices\n");
return;
}
for (int i = 0; i < triVertices.count(); ++i) {
triVerts[i] = triVertices[i];
}
mesh.init(kTriangles_GrPrimitiveType, triVertexBuffer, firstTriVertex,
triVertices.count());
target->draw(triangleProcessor, mesh);
}
if (quadVertices.count()) {
const GrBuffer* quadVertexBuffer;
int firstQuadVertex;
size_t quadStride = quadProcessor->getVertexStride();
PLSVertex* quadVerts = reinterpret_cast<PLSVertex*>(target->makeVertexSpace(
quadStride, quadVertices.count(), &quadVertexBuffer, &firstQuadVertex));
if (!quadVerts) {
SkDebugf("Could not allocate vertices\n");
return;
}
for (int i = 0; i < quadVertices.count(); ++i) {
quadVerts[i] = quadVertices[i];
}
mesh.init(kTriangles_GrPrimitiveType, quadVertexBuffer, firstQuadVertex,
quadVertices.count());
target->draw(quadProcessor, mesh);
}
SkAutoTUnref<GrGeometryProcessor> finishProcessor(
PLSFinishEffect::Create(fColor,
pathPtr->getFillType() ==
SkPath::FillType::kEvenOdd_FillType,
invert,
fUsesLocalCoords));
const GrBuffer* rectVertexBuffer;
size_t finishStride = finishProcessor->getVertexStride();
int firstRectVertex;
static const int kRectVertexCount = 6;
SkPoint* rectVerts = reinterpret_cast<SkPoint*>(target->makeVertexSpace(
finishStride, kRectVertexCount, &rectVertexBuffer, &firstRectVertex));
if (!rectVerts) {
SkDebugf("Could not allocate vertices\n");
return;
}
rectVerts[0] = { bounds.fLeft, bounds.fTop };
rectVerts[1] = { bounds.fLeft, bounds.fBottom };
rectVerts[2] = { bounds.fRight, bounds.fBottom };
rectVerts[3] = { bounds.fLeft, bounds.fTop };
rectVerts[4] = { bounds.fRight, bounds.fTop };
rectVerts[5] = { bounds.fRight, bounds.fBottom };
mesh.init(kTriangles_GrPrimitiveType, rectVertexBuffer, firstRectVertex,
kRectVertexCount);
target->draw(finishProcessor, mesh);
}
