diff options
author | 2016-12-16 09:52:16 -0500 | |
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committer | 2016-12-16 16:58:24 +0000 | |
commit | 895274391db8df7357334aec260edca2e1735626 (patch) | |
tree | 6c447a64c6e376d67503ef18e20cfdb655b6a312 /src/gpu/batches/GrAALinearizingConvexPathRenderer.cpp | |
parent | 6b316e9e20d67f0f13021ca62f4270105c6151b1 (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.cpp | 407 |
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 |