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authorGravatar Brian Salomon <bsalomon@google.com>2016-12-16 09:52:16 -0500
committerGravatar Skia Commit-Bot <skia-commit-bot@chromium.org>2016-12-16 16:58:24 +0000
commit895274391db8df7357334aec260edca2e1735626 (patch)
tree6c447a64c6e376d67503ef18e20cfdb655b6a312 /src/gpu/batches/GrAALinearizingConvexPathRenderer.cpp
parent6b316e9e20d67f0f13021ca62f4270105c6151b1 (diff)
move src/gpu/batches -> src/gpu/ops
Change-Id: I6410eae41f051ce38bef6f38d670924c3483c325 Reviewed-on: https://skia-review.googlesource.com/6163 Commit-Queue: Brian Salomon <bsalomon@google.com> Reviewed-by: Brian Osman <brianosman@google.com>
Diffstat (limited to 'src/gpu/batches/GrAALinearizingConvexPathRenderer.cpp')
-rw-r--r--src/gpu/batches/GrAALinearizingConvexPathRenderer.cpp407
1 files changed, 0 insertions, 407 deletions
diff --git a/src/gpu/batches/GrAALinearizingConvexPathRenderer.cpp b/src/gpu/batches/GrAALinearizingConvexPathRenderer.cpp
deleted file mode 100644
index c8c5885915..0000000000
--- a/src/gpu/batches/GrAALinearizingConvexPathRenderer.cpp
+++ /dev/null
@@ -1,407 +0,0 @@
-/*
- * Copyright 2015 Google Inc.
- *
- * Use of this source code is governed by a BSD-style license that can be
- * found in the LICENSE file.
- */
-
-#include "GrAALinearizingConvexPathRenderer.h"
-
-#include "GrAAConvexTessellator.h"
-#include "GrBatchTest.h"
-#include "GrContext.h"
-#include "GrDefaultGeoProcFactory.h"
-#include "GrGeometryProcessor.h"
-#include "GrInvariantOutput.h"
-#include "GrOpFlushState.h"
-#include "GrPathUtils.h"
-#include "GrPipelineBuilder.h"
-#include "GrProcessor.h"
-#include "GrStyle.h"
-#include "SkGeometry.h"
-#include "SkPathPriv.h"
-#include "SkString.h"
-#include "SkTraceEvent.h"
-#include "batches/GrMeshDrawOp.h"
-#include "glsl/GrGLSLGeometryProcessor.h"
-
-static const int DEFAULT_BUFFER_SIZE = 100;
-
-// The thicker the stroke, the harder it is to produce high-quality results using tessellation. For
-// the time being, we simply drop back to software rendering above this stroke width.
-static const SkScalar kMaxStrokeWidth = 20.0;
-
-GrAALinearizingConvexPathRenderer::GrAALinearizingConvexPathRenderer() {
-}
-
-///////////////////////////////////////////////////////////////////////////////
-
-bool GrAALinearizingConvexPathRenderer::onCanDrawPath(const CanDrawPathArgs& args) const {
- if (GrAAType::kCoverage != args.fAAType) {
- return false;
- }
- if (!args.fShape->knownToBeConvex()) {
- return false;
- }
- if (args.fShape->style().pathEffect()) {
- return false;
- }
- if (args.fShape->inverseFilled()) {
- return false;
- }
- const SkStrokeRec& stroke = args.fShape->style().strokeRec();
-
- if (stroke.getStyle() == SkStrokeRec::kStroke_Style ||
- stroke.getStyle() == SkStrokeRec::kStrokeAndFill_Style) {
- if (!args.fViewMatrix->isSimilarity()) {
- return false;
- }
- SkScalar strokeWidth = args.fViewMatrix->getMaxScale() * stroke.getWidth();
- if (strokeWidth < 1.0f && stroke.getStyle() == SkStrokeRec::kStroke_Style) {
- return false;
- }
- return strokeWidth <= kMaxStrokeWidth &&
- args.fShape->knownToBeClosed() &&
- stroke.getJoin() != SkPaint::Join::kRound_Join;
- }
- return stroke.getStyle() == SkStrokeRec::kFill_Style;
-}
-
-// extract the result vertices and indices from the GrAAConvexTessellator
-static void extract_verts(const GrAAConvexTessellator& tess,
- void* vertices,
- size_t vertexStride,
- GrColor color,
- uint16_t firstIndex,
- uint16_t* idxs,
- bool tweakAlphaForCoverage) {
- intptr_t verts = reinterpret_cast<intptr_t>(vertices);
-
- for (int i = 0; i < tess.numPts(); ++i) {
- *((SkPoint*)((intptr_t)verts + i * vertexStride)) = tess.point(i);
- }
-
- // Make 'verts' point to the colors
- verts += sizeof(SkPoint);
- for (int i = 0; i < tess.numPts(); ++i) {
- if (tweakAlphaForCoverage) {
- SkASSERT(SkScalarRoundToInt(255.0f * tess.coverage(i)) <= 255);
- unsigned scale = SkScalarRoundToInt(255.0f * tess.coverage(i));
- GrColor scaledColor = (0xff == scale) ? color : SkAlphaMulQ(color, scale);
- *reinterpret_cast<GrColor*>(verts + i * vertexStride) = scaledColor;
- } else {
- *reinterpret_cast<GrColor*>(verts + i * vertexStride) = color;
- *reinterpret_cast<float*>(verts + i * vertexStride + sizeof(GrColor)) =
- tess.coverage(i);
- }
- }
-
- for (int i = 0; i < tess.numIndices(); ++i) {
- idxs[i] = tess.index(i) + firstIndex;
- }
-}
-
-static sk_sp<GrGeometryProcessor> create_fill_gp(bool tweakAlphaForCoverage,
- const SkMatrix& viewMatrix,
- bool usesLocalCoords,
- bool coverageIgnored) {
- using namespace GrDefaultGeoProcFactory;
-
- Color color(Color::kAttribute_Type);
- Coverage::Type coverageType;
- // TODO remove coverage if coverage is ignored
- /*if (coverageIgnored) {
- coverageType = Coverage::kNone_Type;
- } else*/ if (tweakAlphaForCoverage) {
- coverageType = Coverage::kSolid_Type;
- } else {
- coverageType = Coverage::kAttribute_Type;
- }
- Coverage coverage(coverageType);
- LocalCoords localCoords(usesLocalCoords ? LocalCoords::kUsePosition_Type :
- LocalCoords::kUnused_Type);
- return MakeForDeviceSpace(color, coverage, localCoords, viewMatrix);
-}
-
-class AAFlatteningConvexPathOp final : public GrMeshDrawOp {
-public:
- DEFINE_OP_CLASS_ID
- static sk_sp<GrDrawOp> Make(GrColor color,
- const SkMatrix& viewMatrix,
- const SkPath& path,
- SkScalar strokeWidth,
- SkStrokeRec::Style style,
- SkPaint::Join join,
- SkScalar miterLimit) {
- return sk_sp<GrDrawOp>(new AAFlatteningConvexPathOp(color, viewMatrix, path, strokeWidth,
- style, join, miterLimit));
- }
-
- const char* name() const override { return "AAFlatteningConvexPathOp"; }
-
- SkString dumpInfo() const override {
- SkString string;
- for (const auto& path : fPaths) {
- string.appendf(
- "Color: 0x%08x, StrokeWidth: %.2f, Style: %d, Join: %d, "
- "MiterLimit: %.2f\n",
- path.fColor, path.fStrokeWidth, path.fStyle, path.fJoin, path.fMiterLimit);
- }
- string.append(DumpPipelineInfo(*this->pipeline()));
- string.append(INHERITED::dumpInfo());
- return string;
- }
-
- void computePipelineOptimizations(GrInitInvariantOutput* color,
- GrInitInvariantOutput* coverage,
- GrBatchToXPOverrides* overrides) const override {
- // When this is called there is only one path.
- color->setKnownFourComponents(fPaths[0].fColor);
- coverage->setUnknownSingleComponent();
- }
-
-private:
- AAFlatteningConvexPathOp(GrColor color,
- const SkMatrix& viewMatrix,
- const SkPath& path,
- SkScalar strokeWidth,
- SkStrokeRec::Style style,
- SkPaint::Join join,
- SkScalar miterLimit)
- : INHERITED(ClassID()) {
- fPaths.emplace_back(
- PathData{color, viewMatrix, path, strokeWidth, style, join, miterLimit});
-
- // compute bounds
- SkRect bounds = path.getBounds();
- SkScalar w = strokeWidth;
- if (w > 0) {
- w /= 2;
- // If the half stroke width is < 1 then we effectively fallback to bevel joins.
- if (SkPaint::kMiter_Join == join && w > 1.f) {
- w *= miterLimit;
- }
- bounds.outset(w, w);
- }
- this->setTransformedBounds(bounds, viewMatrix, HasAABloat::kYes, IsZeroArea::kNo);
- }
-
- void initBatchTracker(const GrXPOverridesForBatch& overrides) override {
- // Handle any color overrides
- if (!overrides.readsColor()) {
- fPaths[0].fColor = GrColor_ILLEGAL;
- }
- overrides.getOverrideColorIfSet(&fPaths[0].fColor);
-
- // setup batch properties
- fColor = fPaths[0].fColor;
- fUsesLocalCoords = overrides.readsLocalCoords();
- fCoverageIgnored = !overrides.readsCoverage();
- fCanTweakAlphaForCoverage = overrides.canTweakAlphaForCoverage();
- }
-
- void draw(GrMeshDrawOp::Target* target, const GrGeometryProcessor* gp, int vertexCount,
- size_t vertexStride, void* vertices, int indexCount, uint16_t* indices) const {
- if (vertexCount == 0 || indexCount == 0) {
- return;
- }
- const GrBuffer* vertexBuffer;
- GrMesh mesh;
- int firstVertex;
- void* verts = target->makeVertexSpace(vertexStride, vertexCount, &vertexBuffer,
- &firstVertex);
- if (!verts) {
- SkDebugf("Could not allocate vertices\n");
- return;
- }
- memcpy(verts, vertices, vertexCount * vertexStride);
-
- const GrBuffer* indexBuffer;
- int firstIndex;
- uint16_t* idxs = target->makeIndexSpace(indexCount, &indexBuffer, &firstIndex);
- if (!idxs) {
- SkDebugf("Could not allocate indices\n");
- return;
- }
- memcpy(idxs, indices, indexCount * sizeof(uint16_t));
- mesh.initIndexed(kTriangles_GrPrimitiveType, vertexBuffer, indexBuffer, firstVertex,
- firstIndex, vertexCount, indexCount);
- target->draw(gp, mesh);
- }
-
- void onPrepareDraws(Target* target) const override {
- bool canTweakAlphaForCoverage = this->canTweakAlphaForCoverage();
-
- // Setup GrGeometryProcessor
- sk_sp<GrGeometryProcessor> gp(create_fill_gp(canTweakAlphaForCoverage,
- this->viewMatrix(),
- this->usesLocalCoords(),
- this->coverageIgnored()));
- if (!gp) {
- SkDebugf("Couldn't create a GrGeometryProcessor\n");
- return;
- }
-
- size_t vertexStride = gp->getVertexStride();
-
- SkASSERT(canTweakAlphaForCoverage ?
- vertexStride == sizeof(GrDefaultGeoProcFactory::PositionColorAttr) :
- vertexStride == sizeof(GrDefaultGeoProcFactory::PositionColorCoverageAttr));
-
- int instanceCount = fPaths.count();
-
- int vertexCount = 0;
- int indexCount = 0;
- int maxVertices = DEFAULT_BUFFER_SIZE;
- int maxIndices = DEFAULT_BUFFER_SIZE;
- uint8_t* vertices = (uint8_t*) sk_malloc_throw(maxVertices * vertexStride);
- uint16_t* indices = (uint16_t*) sk_malloc_throw(maxIndices * sizeof(uint16_t));
- for (int i = 0; i < instanceCount; i++) {
- const PathData& args = fPaths[i];
- GrAAConvexTessellator tess(args.fStyle, args.fStrokeWidth,
- args.fJoin, args.fMiterLimit);
-
- if (!tess.tessellate(args.fViewMatrix, args.fPath)) {
- continue;
- }
-
- int currentIndices = tess.numIndices();
- SkASSERT(currentIndices <= UINT16_MAX);
- if (indexCount + currentIndices > UINT16_MAX) {
- // if we added the current instance, we would overflow the indices we can store in a
- // uint16_t. Draw what we've got so far and reset.
- this->draw(target, gp.get(),
- vertexCount, vertexStride, vertices, indexCount, indices);
- vertexCount = 0;
- indexCount = 0;
- }
- int currentVertices = tess.numPts();
- if (vertexCount + currentVertices > maxVertices) {
- maxVertices = SkTMax(vertexCount + currentVertices, maxVertices * 2);
- vertices = (uint8_t*) sk_realloc_throw(vertices, maxVertices * vertexStride);
- }
- if (indexCount + currentIndices > maxIndices) {
- maxIndices = SkTMax(indexCount + currentIndices, maxIndices * 2);
- indices = (uint16_t*) sk_realloc_throw(indices, maxIndices * sizeof(uint16_t));
- }
-
- extract_verts(tess, vertices + vertexStride * vertexCount, vertexStride, args.fColor,
- vertexCount, indices + indexCount, canTweakAlphaForCoverage);
- vertexCount += currentVertices;
- indexCount += currentIndices;
- }
- this->draw(target, gp.get(), vertexCount, vertexStride, vertices, indexCount, indices);
- sk_free(vertices);
- sk_free(indices);
- }
-
- bool onCombineIfPossible(GrOp* t, const GrCaps& caps) override {
- AAFlatteningConvexPathOp* that = t->cast<AAFlatteningConvexPathOp>();
- if (!GrPipeline::CanCombine(*this->pipeline(), this->bounds(), *that->pipeline(),
- that->bounds(), caps)) {
- return false;
- }
-
- SkASSERT(this->usesLocalCoords() == that->usesLocalCoords());
- if (this->usesLocalCoords() && !this->viewMatrix().cheapEqualTo(that->viewMatrix())) {
- return false;
- }
-
- // In the event of two ops, one who can tweak, one who cannot, we just fall back to not
- // tweaking
- if (this->canTweakAlphaForCoverage() != that->canTweakAlphaForCoverage()) {
- fCanTweakAlphaForCoverage = false;
- }
-
- fPaths.push_back_n(that->fPaths.count(), that->fPaths.begin());
- this->joinBounds(*that);
- return true;
- }
-
- GrColor color() const { return fColor; }
- bool usesLocalCoords() const { return fUsesLocalCoords; }
- bool canTweakAlphaForCoverage() const { return fCanTweakAlphaForCoverage; }
- const SkMatrix& viewMatrix() const { return fPaths[0].fViewMatrix; }
- bool coverageIgnored() const { return fCoverageIgnored; }
-
- struct PathData {
- GrColor fColor;
- SkMatrix fViewMatrix;
- SkPath fPath;
- SkScalar fStrokeWidth;
- SkStrokeRec::Style fStyle;
- SkPaint::Join fJoin;
- SkScalar fMiterLimit;
- };
-
- GrColor fColor;
- bool fUsesLocalCoords;
- bool fCoverageIgnored;
- bool fCanTweakAlphaForCoverage;
- SkSTArray<1, PathData, true> fPaths;
-
- typedef GrMeshDrawOp INHERITED;
-};
-
-bool GrAALinearizingConvexPathRenderer::onDrawPath(const DrawPathArgs& args) {
- GR_AUDIT_TRAIL_AUTO_FRAME(args.fRenderTargetContext->auditTrail(),
- "GrAALinearizingConvexPathRenderer::onDrawPath");
- SkASSERT(!args.fRenderTargetContext->isUnifiedMultisampled());
- SkASSERT(!args.fShape->isEmpty());
- SkASSERT(!args.fShape->style().pathEffect());
-
- SkPath path;
- args.fShape->asPath(&path);
- bool fill = args.fShape->style().isSimpleFill();
- const SkStrokeRec& stroke = args.fShape->style().strokeRec();
- SkScalar strokeWidth = fill ? -1.0f : stroke.getWidth();
- SkPaint::Join join = fill ? SkPaint::Join::kMiter_Join : stroke.getJoin();
- SkScalar miterLimit = stroke.getMiter();
-
- sk_sp<GrDrawOp> op =
- AAFlatteningConvexPathOp::Make(args.fPaint->getColor(), *args.fViewMatrix, path,
- strokeWidth, stroke.getStyle(), join, miterLimit);
-
- GrPipelineBuilder pipelineBuilder(*args.fPaint, args.fAAType);
- pipelineBuilder.setUserStencil(args.fUserStencilSettings);
-
- args.fRenderTargetContext->addDrawOp(pipelineBuilder, *args.fClip, std::move(op));
-
- return true;
-}
-
-///////////////////////////////////////////////////////////////////////////////////////////////////
-
-#ifdef GR_TEST_UTILS
-
-DRAW_BATCH_TEST_DEFINE(AAFlatteningConvexPathOp) {
- GrColor color = GrRandomColor(random);
- SkMatrix viewMatrix = GrTest::TestMatrixPreservesRightAngles(random);
- SkPath path = GrTest::TestPathConvex(random);
-
- SkStrokeRec::Style styles[3] = { SkStrokeRec::kFill_Style,
- SkStrokeRec::kStroke_Style,
- SkStrokeRec::kStrokeAndFill_Style };
-
- SkStrokeRec::Style style = styles[random->nextU() % 3];
-
- SkScalar strokeWidth = -1.f;
- SkPaint::Join join = SkPaint::kMiter_Join;
- SkScalar miterLimit = 0.5f;
-
- if (SkStrokeRec::kFill_Style != style) {
- strokeWidth = random->nextRangeF(1.0f, 10.0f);
- if (random->nextBool()) {
- join = SkPaint::kMiter_Join;
- } else {
- join = SkPaint::kBevel_Join;
- }
- miterLimit = random->nextRangeF(0.5f, 2.0f);
- }
-
- return AAFlatteningConvexPathOp::Make(color, viewMatrix, path, strokeWidth, style, join,
- miterLimit)
- .release();
-}
-
-#endif