void generateGeometry(GrBatchTarget* batchTarget, const GrPipeline* pipeline) override {
int instanceCount = fGeoData.count();
SkMatrix invert;
if (this->usesLocalCoords() && !this->viewMatrix().invert(&invert)) {
SkDebugf("Could not invert viewmatrix\n");
return;
}
// Setup GrGeometryProcessor
SkAutoTUnref<GrGeometryProcessor> quadProcessor(QuadEdgeEffect::Create(this->color(),
invert));
batchTarget->initDraw(quadProcessor, pipeline);
// TODO remove this when batch is everywhere
GrPipelineInfo init;
init.fColorIgnored = fBatch.fColorIgnored;
init.fOverrideColor = GrColor_ILLEGAL;
init.fCoverageIgnored = fBatch.fCoverageIgnored;
init.fUsesLocalCoords = this->usesLocalCoords();
quadProcessor->initBatchTracker(batchTarget->currentBatchTracker(), init);
// TODO generate all segments for all paths and use one vertex buffer
for (int i = 0; i < instanceCount; i++) {
Geometry& args = fGeoData[i];
// 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 = &args.fViewMatrix;
if (viewMatrix->hasPerspective()) {
args.fPath.transform(*viewMatrix);
viewMatrix = &SkMatrix::I();
}
int vertexCount;
int indexCount;
enum {
kPreallocSegmentCnt = 512 / sizeof(Segment),
kPreallocDrawCnt = 4,
};
SkSTArray<kPreallocSegmentCnt, Segment, true> segments;
SkPoint fanPt;
if (!get_segments(args.fPath, *viewMatrix, &segments, &fanPt, &vertexCount,
&indexCount)) {
continue;
}
const GrVertexBuffer* vertexBuffer;
int firstVertex;
size_t vertexStride = quadProcessor->getVertexStride();
void *vertices = batchTarget->vertexPool()->makeSpace(vertexStride,
vertexCount,
&vertexBuffer,
&firstVertex);
if (!vertices) {
SkDebugf("Could not allocate vertices\n");
return;
}
const GrIndexBuffer* indexBuffer;
int firstIndex;
void *indices = batchTarget->indexPool()->makeSpace(indexCount,
&indexBuffer,
&firstIndex);
if (!indices) {
SkDebugf("Could not allocate indices\n");
return;
}
QuadVertex* verts = reinterpret_cast<QuadVertex*>(vertices);
uint16_t* idxs = reinterpret_cast<uint16_t*>(indices);
SkSTArray<kPreallocDrawCnt, Draw, true> draws;
create_vertices(segments, fanPt, &draws, verts, idxs);
GrDrawTarget::DrawInfo info;
info.setVertexBuffer(vertexBuffer);
info.setIndexBuffer(indexBuffer);
info.setPrimitiveType(kTriangles_GrPrimitiveType);
info.setStartIndex(firstIndex);
int vOffset = 0;
for (int i = 0; i < draws.count(); ++i) {
const Draw& draw = draws[i];
info.setStartVertex(vOffset + firstVertex);
info.setVertexCount(draw.fVertexCnt);
info.setIndexCount(draw.fIndexCnt);
batchTarget->draw(info);
vOffset += draw.fVertexCnt;
}
}
}
void generateGeometry(GrBatchTarget* batchTarget, const GrPipeline* pipeline) override {
// Go to device coords to allow batching across matrix changes
SkMatrix invert = SkMatrix::I();
// if we have a local rect, then we apply the localMatrix directly to the localRect to
// generate vertex local coords
bool hasExplicitLocalCoords = this->hasLocalRect();
if (!hasExplicitLocalCoords) {
if (!this->viewMatrix().isIdentity() && !this->viewMatrix().invert(&invert)) {
SkDebugf("Could not invert\n");
return;
}
if (this->hasLocalMatrix()) {
invert.preConcat(this->localMatrix());
}
}
SkAutoTUnref<const GrGeometryProcessor> gp(create_rect_gp(hasExplicitLocalCoords,
this->color(),
&invert));
batchTarget->initDraw(gp, pipeline);
// TODO this is hacky, but the only way we have to initialize the GP is to use the
// GrPipelineInfo struct so we can generate the correct shader. Once we have GrBatch
// everywhere we can remove this nastiness
GrPipelineInfo init;
init.fColorIgnored = fBatch.fColorIgnored;
init.fOverrideColor = GrColor_ILLEGAL;
init.fCoverageIgnored = fBatch.fCoverageIgnored;
init.fUsesLocalCoords = this->usesLocalCoords();
gp->initBatchTracker(batchTarget->currentBatchTracker(), init);
size_t vertexStride = gp->getVertexStride();
SkASSERT(hasExplicitLocalCoords ?
vertexStride == sizeof(GrDefaultGeoProcFactory::PositionColorLocalCoordAttr) :
vertexStride == sizeof(GrDefaultGeoProcFactory::PositionColorAttr));
int instanceCount = fGeoData.count();
int vertexCount = kVertsPerRect * instanceCount;
const GrVertexBuffer* vertexBuffer;
int firstVertex;
void* vertices = batchTarget->vertexPool()->makeSpace(vertexStride,
vertexCount,
&vertexBuffer,
&firstVertex);
if (!vertices || !batchTarget->quadIndexBuffer()) {
SkDebugf("Could not allocate buffers\n");
return;
}
for (int i = 0; i < instanceCount; i++) {
const Geometry& args = fGeoData[i];
intptr_t offset = GrTCast<intptr_t>(vertices) + kVertsPerRect * i * vertexStride;
SkPoint* positions = GrTCast<SkPoint*>(offset);
positions->setRectFan(args.fRect.fLeft, args.fRect.fTop,
args.fRect.fRight, args.fRect.fBottom, vertexStride);
args.fViewMatrix.mapPointsWithStride(positions, vertexStride, kVertsPerRect);
if (args.fHasLocalRect) {
static const int kLocalOffset = sizeof(SkPoint) + sizeof(GrColor);
SkPoint* coords = GrTCast<SkPoint*>(offset + kLocalOffset);
coords->setRectFan(args.fLocalRect.fLeft, args.fLocalRect.fTop,
args.fLocalRect.fRight, args.fLocalRect.fBottom,
vertexStride);
if (args.fHasLocalMatrix) {
args.fLocalMatrix.mapPointsWithStride(coords, vertexStride, kVertsPerRect);
}
}
static const int kColorOffset = sizeof(SkPoint);
GrColor* vertColor = GrTCast<GrColor*>(offset + kColorOffset);
for (int j = 0; j < 4; ++j) {
*vertColor = args.fColor;
vertColor = (GrColor*) ((intptr_t) vertColor + vertexStride);
}
}
const GrIndexBuffer* quadIndexBuffer = batchTarget->quadIndexBuffer();
GrDrawTarget::DrawInfo drawInfo;
drawInfo.setPrimitiveType(kTriangles_GrPrimitiveType);
drawInfo.setStartVertex(0);
drawInfo.setStartIndex(0);
drawInfo.setVerticesPerInstance(kVertsPerRect);
drawInfo.setIndicesPerInstance(kIndicesPerRect);
drawInfo.adjustStartVertex(firstVertex);
drawInfo.setVertexBuffer(vertexBuffer);
drawInfo.setIndexBuffer(quadIndexBuffer);
int maxInstancesPerDraw = quadIndexBuffer->maxQuads();
while (instanceCount) {
drawInfo.setInstanceCount(SkTMin(instanceCount, maxInstancesPerDraw));
drawInfo.setVertexCount(drawInfo.instanceCount() * drawInfo.verticesPerInstance());
drawInfo.setIndexCount(drawInfo.instanceCount() * drawInfo.indicesPerInstance());
batchTarget->draw(drawInfo);
drawInfo.setStartVertex(drawInfo.startVertex() + drawInfo.vertexCount());
instanceCount -= drawInfo.instanceCount();
}
}
