ae64c194fe
Renamed to GrGpuBufferType in anticipation of splitting GrBuffer into GrGpuBuffer and GrCpuBuffer types. There were two unused values in the enum that are removed, DrawIndirect and Texel. Change-Id: Icb6b3da689adbd8e10495c10fd0470a6ee0120b5 Reviewed-on: https://skia-review.googlesource.com/c/189280 Commit-Queue: Brian Salomon <bsalomon@google.com> Reviewed-by: Robert Phillips <robertphillips@google.com>
500 lines
18 KiB
C++
500 lines
18 KiB
C++
/*
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* Copyright 2017 Google Inc.
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*
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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#include "SkTypes.h"
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#if SK_SUPPORT_GPU
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#include "GrContextPriv.h"
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#include "GrMemoryPool.h"
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#include "GrPathUtils.h"
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#include "GrRenderTargetContext.h"
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#include "GrRenderTargetContextPriv.h"
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#include "GrResourceProvider.h"
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#include "Sample.h"
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#include "SkCanvas.h"
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#include "SkPaint.h"
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#include "SkPath.h"
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#include "SkRectPriv.h"
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#include "ccpr/GrCCCoverageProcessor.h"
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#include "ccpr/GrCCFillGeometry.h"
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#include "ccpr/GrCCStroker.h"
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#include "gl/GrGLGpu.cpp"
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#include "glsl/GrGLSLFragmentProcessor.h"
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#include "ops/GrDrawOp.h"
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using TriPointInstance = GrCCCoverageProcessor::TriPointInstance;
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using QuadPointInstance = GrCCCoverageProcessor::QuadPointInstance;
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using PrimitiveType = GrCCCoverageProcessor::PrimitiveType;
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static constexpr float kDebugBloat = 40;
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/**
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* This sample visualizes the AA bloat geometry generated by the ccpr geometry shaders. It
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* increases the AA bloat by 50x and outputs color instead of coverage (coverage=+1 -> green,
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* coverage=0 -> black, coverage=-1 -> red). Use the keys 1-7 to cycle through the different
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* geometry processors.
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*/
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class CCPRGeometryView : public Sample {
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public:
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CCPRGeometryView() { this->updateGpuData(); }
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void onDrawContent(SkCanvas*) override;
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Sample::Click* onFindClickHandler(SkScalar x, SkScalar y, unsigned) override;
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bool onClick(Sample::Click*) override;
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bool onQuery(Sample::Event* evt) override;
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private:
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class Click;
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class DrawCoverageCountOp;
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class VisualizeCoverageCountFP;
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void updateAndInval() { this->updateGpuData(); }
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void updateGpuData();
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PrimitiveType fPrimitiveType = PrimitiveType::kTriangles;
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SkCubicType fCubicType;
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SkMatrix fCubicKLM;
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SkPoint fPoints[4] = {
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{100.05f, 100.05f}, {400.75f, 100.05f}, {400.75f, 300.95f}, {100.05f, 300.95f}};
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float fConicWeight = .5;
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float fStrokeWidth = 40;
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bool fDoStroke = false;
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SkTArray<TriPointInstance> fTriPointInstances;
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SkTArray<QuadPointInstance> fQuadPointInstances;
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SkPath fPath;
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typedef Sample INHERITED;
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};
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class CCPRGeometryView::DrawCoverageCountOp : public GrDrawOp {
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DEFINE_OP_CLASS_ID
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public:
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DrawCoverageCountOp(CCPRGeometryView* view) : INHERITED(ClassID()), fView(view) {
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this->setBounds(SkRect::MakeIWH(fView->width(), fView->height()), GrOp::HasAABloat::kNo,
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GrOp::IsZeroArea::kNo);
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}
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const char* name() const override {
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return "[Testing/Sample code] CCPRGeometryView::DrawCoverageCountOp";
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}
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private:
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FixedFunctionFlags fixedFunctionFlags() const override { return FixedFunctionFlags::kNone; }
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GrProcessorSet::Analysis finalize(const GrCaps&, const GrAppliedClip*) override {
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return GrProcessorSet::EmptySetAnalysis();
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}
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void onPrepare(GrOpFlushState*) override {}
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void onExecute(GrOpFlushState*, const SkRect& chainBounds) override;
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CCPRGeometryView* fView;
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typedef GrDrawOp INHERITED;
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};
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class CCPRGeometryView::VisualizeCoverageCountFP : public GrFragmentProcessor {
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public:
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VisualizeCoverageCountFP() : GrFragmentProcessor(kTestFP_ClassID, kNone_OptimizationFlags) {}
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private:
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const char* name() const override {
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return "[Testing/Sample code] CCPRGeometryView::VisualizeCoverageCountFP";
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}
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std::unique_ptr<GrFragmentProcessor> clone() const override {
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return skstd::make_unique<VisualizeCoverageCountFP>();
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}
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void onGetGLSLProcessorKey(const GrShaderCaps&, GrProcessorKeyBuilder*) const override {}
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bool onIsEqual(const GrFragmentProcessor&) const override { return true; }
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class Impl : public GrGLSLFragmentProcessor {
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void emitCode(EmitArgs& args) override {
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GrGLSLFPFragmentBuilder* f = args.fFragBuilder;
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f->codeAppendf("half count = %s.a;", args.fInputColor);
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f->codeAppendf("%s = half4(clamp(-count, 0, 1), clamp(+count, 0, 1), 0, abs(count));",
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args.fOutputColor);
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}
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};
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GrGLSLFragmentProcessor* onCreateGLSLInstance() const override { return new Impl; }
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};
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static void draw_klm_line(int w, int h, SkCanvas* canvas, const SkScalar line[3], SkColor color) {
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SkPoint p1, p2;
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if (SkScalarAbs(line[1]) > SkScalarAbs(line[0])) {
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// Draw from vertical edge to vertical edge.
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p1 = {0, -line[2] / line[1]};
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p2 = {(SkScalar)w, (-line[2] - w * line[0]) / line[1]};
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} else {
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// Draw from horizontal edge to horizontal edge.
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p1 = {-line[2] / line[0], 0};
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p2 = {(-line[2] - h * line[1]) / line[0], (SkScalar)h};
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}
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SkPaint linePaint;
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linePaint.setColor(color);
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linePaint.setAlpha(128);
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linePaint.setStyle(SkPaint::kStroke_Style);
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linePaint.setStrokeWidth(0);
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linePaint.setAntiAlias(true);
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canvas->drawLine(p1, p2, linePaint);
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}
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void CCPRGeometryView::onDrawContent(SkCanvas* canvas) {
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canvas->clear(SK_ColorBLACK);
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if (!fDoStroke) {
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SkPaint outlinePaint;
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outlinePaint.setColor(0x80ffffff);
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outlinePaint.setStyle(SkPaint::kStroke_Style);
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outlinePaint.setStrokeWidth(0);
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outlinePaint.setAntiAlias(true);
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canvas->drawPath(fPath, outlinePaint);
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}
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#if 0
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SkPaint gridPaint;
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gridPaint.setColor(0x10000000);
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gridPaint.setStyle(SkPaint::kStroke_Style);
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gridPaint.setStrokeWidth(0);
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gridPaint.setAntiAlias(true);
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for (int y = 0; y < this->height(); y += kDebugBloat) {
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canvas->drawLine(0, y, this->width(), y, gridPaint);
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}
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for (int x = 0; x < this->width(); x += kDebugBloat) {
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canvas->drawLine(x, 0, x, this->height(), outlinePaint);
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}
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#endif
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SkString caption;
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if (GrRenderTargetContext* rtc = canvas->internal_private_accessTopLayerRenderTargetContext()) {
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// Render coverage count.
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GrContext* ctx = canvas->getGrContext();
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SkASSERT(ctx);
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GrOpMemoryPool* pool = ctx->priv().opMemoryPool();
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const GrBackendFormat format =
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ctx->priv().caps()->getBackendFormatFromGrColorType(GrColorType::kAlpha_F16,
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GrSRGBEncoded::kNo);
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sk_sp<GrRenderTargetContext> ccbuff =
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ctx->priv().makeDeferredRenderTargetContext(format, SkBackingFit::kApprox,
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this->width(), this->height(),
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kAlpha_half_GrPixelConfig,
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nullptr);
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SkASSERT(ccbuff);
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ccbuff->clear(nullptr, SK_PMColor4fTRANSPARENT,
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GrRenderTargetContext::CanClearFullscreen::kYes);
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ccbuff->priv().testingOnly_addDrawOp(pool->allocate<DrawCoverageCountOp>(this));
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// Visualize coverage count in main canvas.
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GrPaint paint;
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paint.addColorFragmentProcessor(
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GrSimpleTextureEffect::Make(sk_ref_sp(ccbuff->asTextureProxy()), SkMatrix::I()));
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paint.addColorFragmentProcessor(
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skstd::make_unique<VisualizeCoverageCountFP>());
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paint.setPorterDuffXPFactory(SkBlendMode::kSrcOver);
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rtc->drawRect(GrNoClip(), std::move(paint), GrAA::kNo, SkMatrix::I(),
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SkRect::MakeIWH(this->width(), this->height()));
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// Add label.
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caption.appendf("PrimitiveType_%s",
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GrCCCoverageProcessor::PrimitiveTypeName(fPrimitiveType));
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if (PrimitiveType::kCubics == fPrimitiveType) {
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caption.appendf(" (%s)", SkCubicTypeName(fCubicType));
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} else if (PrimitiveType::kConics == fPrimitiveType) {
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caption.appendf(" (w=%f)", fConicWeight);
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}
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if (fDoStroke) {
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caption.appendf(" (stroke_width=%f)", fStrokeWidth);
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}
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} else {
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caption = "Use GPU backend to visualize geometry.";
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}
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SkPaint pointsPaint;
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pointsPaint.setColor(SK_ColorBLUE);
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pointsPaint.setStrokeWidth(8);
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pointsPaint.setAntiAlias(true);
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if (PrimitiveType::kCubics == fPrimitiveType) {
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canvas->drawPoints(SkCanvas::kPoints_PointMode, 4, fPoints, pointsPaint);
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if (!fDoStroke) {
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int w = this->width(), h = this->height();
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draw_klm_line(w, h, canvas, &fCubicKLM[0], SK_ColorYELLOW);
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draw_klm_line(w, h, canvas, &fCubicKLM[3], SK_ColorBLUE);
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draw_klm_line(w, h, canvas, &fCubicKLM[6], SK_ColorRED);
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}
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} else {
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canvas->drawPoints(SkCanvas::kPoints_PointMode, 2, fPoints, pointsPaint);
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canvas->drawPoints(SkCanvas::kPoints_PointMode, 1, fPoints + 3, pointsPaint);
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}
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SkFont font(nullptr, 20);
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SkPaint captionPaint;
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captionPaint.setColor(SK_ColorWHITE);
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canvas->drawString(caption, 10, 30, font, captionPaint);
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}
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void CCPRGeometryView::updateGpuData() {
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using Verb = GrCCFillGeometry::Verb;
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fTriPointInstances.reset();
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fQuadPointInstances.reset();
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fPath.reset();
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fPath.moveTo(fPoints[0]);
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if (PrimitiveType::kCubics == fPrimitiveType) {
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double t[2], s[2];
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fCubicType = GrPathUtils::getCubicKLM(fPoints, &fCubicKLM, t, s);
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GrCCFillGeometry geometry;
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geometry.beginContour(fPoints[0]);
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geometry.cubicTo(fPoints, kDebugBloat / 2, kDebugBloat / 2);
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geometry.endContour();
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int ptsIdx = 0;
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for (Verb verb : geometry.verbs()) {
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switch (verb) {
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case Verb::kLineTo:
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++ptsIdx;
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continue;
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case Verb::kMonotonicQuadraticTo:
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ptsIdx += 2;
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continue;
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case Verb::kMonotonicCubicTo:
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fQuadPointInstances.push_back().set(&geometry.points()[ptsIdx], 0, 0);
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ptsIdx += 3;
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continue;
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default:
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continue;
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}
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}
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fPath.cubicTo(fPoints[1], fPoints[2], fPoints[3]);
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} else if (PrimitiveType::kTriangles != fPrimitiveType) {
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SkPoint P3[3] = {fPoints[0], fPoints[1], fPoints[3]};
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GrCCFillGeometry geometry;
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geometry.beginContour(P3[0]);
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if (PrimitiveType::kQuadratics == fPrimitiveType) {
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geometry.quadraticTo(P3);
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fPath.quadTo(fPoints[1], fPoints[3]);
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} else {
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SkASSERT(PrimitiveType::kConics == fPrimitiveType);
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geometry.conicTo(P3, fConicWeight);
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fPath.conicTo(fPoints[1], fPoints[3], fConicWeight);
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}
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geometry.endContour();
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int ptsIdx = 0, conicWeightIdx = 0;
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for (Verb verb : geometry.verbs()) {
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if (Verb::kBeginContour == verb ||
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Verb::kEndOpenContour == verb ||
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Verb::kEndClosedContour == verb) {
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continue;
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}
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if (Verb::kLineTo == verb) {
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++ptsIdx;
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continue;
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}
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SkASSERT(Verb::kMonotonicQuadraticTo == verb || Verb::kMonotonicConicTo == verb);
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if (PrimitiveType::kQuadratics == fPrimitiveType &&
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Verb::kMonotonicQuadraticTo == verb) {
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fTriPointInstances.push_back().set(&geometry.points()[ptsIdx], Sk2f(0, 0));
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} else if (PrimitiveType::kConics == fPrimitiveType &&
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Verb::kMonotonicConicTo == verb) {
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fQuadPointInstances.push_back().setW(&geometry.points()[ptsIdx], Sk2f(0, 0),
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geometry.getConicWeight(conicWeightIdx++));
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}
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ptsIdx += 2;
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}
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} else {
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fTriPointInstances.push_back().set(fPoints[0], fPoints[1], fPoints[3], Sk2f(0, 0));
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fPath.lineTo(fPoints[1]);
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fPath.lineTo(fPoints[3]);
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fPath.close();
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}
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}
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void CCPRGeometryView::DrawCoverageCountOp::onExecute(GrOpFlushState* state,
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const SkRect& chainBounds) {
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GrResourceProvider* rp = state->resourceProvider();
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GrContext* context = state->gpu()->getContext();
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GrGLGpu* glGpu = GrBackendApi::kOpenGL == context->backend()
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? static_cast<GrGLGpu*>(state->gpu())
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: nullptr;
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if (glGpu) {
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glGpu->handleDirtyContext();
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// GR_GL_CALL(glGpu->glInterface(), PolygonMode(GR_GL_FRONT_AND_BACK, GR_GL_LINE));
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GR_GL_CALL(glGpu->glInterface(), Enable(GR_GL_LINE_SMOOTH));
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}
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GrPipeline pipeline(GrScissorTest::kDisabled, SkBlendMode::kPlus);
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if (!fView->fDoStroke) {
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GrCCCoverageProcessor proc(rp, fView->fPrimitiveType);
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SkDEBUGCODE(proc.enableDebugBloat(kDebugBloat));
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SkSTArray<1, GrMesh> mesh;
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if (PrimitiveType::kCubics == fView->fPrimitiveType ||
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PrimitiveType::kConics == fView->fPrimitiveType) {
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sk_sp<GrBuffer> instBuff(
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rp->createBuffer(fView->fQuadPointInstances.count() * sizeof(QuadPointInstance),
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GrGpuBufferType::kVertex, kDynamic_GrAccessPattern,
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GrResourceProvider::Flags::kRequireGpuMemory,
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fView->fQuadPointInstances.begin()));
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if (!fView->fQuadPointInstances.empty() && instBuff) {
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proc.appendMesh(std::move(instBuff), fView->fQuadPointInstances.count(), 0, &mesh);
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}
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} else {
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sk_sp<GrBuffer> instBuff(
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rp->createBuffer(fView->fTriPointInstances.count() * sizeof(TriPointInstance),
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GrGpuBufferType::kVertex, kDynamic_GrAccessPattern,
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GrResourceProvider::Flags::kRequireGpuMemory,
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fView->fTriPointInstances.begin()));
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if (!fView->fTriPointInstances.empty() && instBuff) {
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proc.appendMesh(std::move(instBuff), fView->fTriPointInstances.count(), 0, &mesh);
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}
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}
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if (!mesh.empty()) {
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SkASSERT(1 == mesh.count());
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proc.draw(state, pipeline, nullptr, mesh.begin(), 1, this->bounds());
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}
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} else if (PrimitiveType::kConics != fView->fPrimitiveType) { // No conic stroke support yet.
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GrCCStroker stroker(0,0,0);
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SkPaint p;
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p.setStyle(SkPaint::kStroke_Style);
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p.setStrokeWidth(fView->fStrokeWidth);
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p.setStrokeJoin(SkPaint::kMiter_Join);
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p.setStrokeMiter(4);
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// p.setStrokeCap(SkPaint::kRound_Cap);
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stroker.parseDeviceSpaceStroke(fView->fPath, SkPathPriv::PointData(fView->fPath),
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SkStrokeRec(p), p.getStrokeWidth(), GrScissorTest::kDisabled,
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SkIRect::MakeWH(fView->width(), fView->height()), {0, 0});
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GrCCStroker::BatchID batchID = stroker.closeCurrentBatch();
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GrOnFlushResourceProvider onFlushRP(context->priv().drawingManager());
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stroker.prepareToDraw(&onFlushRP);
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SkIRect ibounds;
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this->bounds().roundOut(&ibounds);
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stroker.drawStrokes(state, batchID, ibounds);
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}
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if (glGpu) {
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context->resetContext(kMisc_GrGLBackendState);
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}
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}
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class CCPRGeometryView::Click : public Sample::Click {
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public:
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Click(Sample* target, int ptIdx) : Sample::Click(target), fPtIdx(ptIdx) {}
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void doClick(SkPoint points[]) {
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if (fPtIdx >= 0) {
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this->dragPoint(points, fPtIdx);
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} else {
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for (int i = 0; i < 4; ++i) {
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this->dragPoint(points, i);
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}
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}
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}
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private:
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void dragPoint(SkPoint points[], int idx) {
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SkIPoint delta = fICurr - fIPrev;
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points[idx] += SkPoint::Make(delta.x(), delta.y());
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}
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int fPtIdx;
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};
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Sample::Click* CCPRGeometryView::onFindClickHandler(SkScalar x, SkScalar y, unsigned) {
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for (int i = 0; i < 4; ++i) {
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if (PrimitiveType::kCubics != fPrimitiveType && 2 == i) {
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continue;
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}
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if (fabs(x - fPoints[i].x()) < 20 && fabsf(y - fPoints[i].y()) < 20) {
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return new Click(this, i);
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}
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}
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return new Click(this, -1);
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}
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bool CCPRGeometryView::onClick(Sample::Click* click) {
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Click* myClick = (Click*)click;
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myClick->doClick(fPoints);
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this->updateAndInval();
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return true;
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}
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bool CCPRGeometryView::onQuery(Sample::Event* evt) {
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if (Sample::TitleQ(*evt)) {
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Sample::TitleR(evt, "CCPRGeometry");
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return true;
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}
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SkUnichar unichar;
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if (Sample::CharQ(*evt, &unichar)) {
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if (unichar >= '1' && unichar <= '4') {
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fPrimitiveType = PrimitiveType(unichar - '1');
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if (fPrimitiveType >= PrimitiveType::kWeightedTriangles) {
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fPrimitiveType = (PrimitiveType) ((int)fPrimitiveType + 1);
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}
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this->updateAndInval();
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return true;
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}
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float* valueToScale = nullptr;
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if (fDoStroke) {
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valueToScale = &fStrokeWidth;
|
|
} else if (PrimitiveType::kConics == fPrimitiveType) {
|
|
valueToScale = &fConicWeight;
|
|
}
|
|
if (valueToScale) {
|
|
if (unichar == '+') {
|
|
*valueToScale *= 2;
|
|
this->updateAndInval();
|
|
return true;
|
|
}
|
|
if (unichar == '+' || unichar == '=') {
|
|
*valueToScale *= 5/4.f;
|
|
this->updateAndInval();
|
|
return true;
|
|
}
|
|
if (unichar == '-') {
|
|
*valueToScale *= 4/5.f;
|
|
this->updateAndInval();
|
|
return true;
|
|
}
|
|
if (unichar == '_') {
|
|
*valueToScale *= .5f;
|
|
this->updateAndInval();
|
|
return true;
|
|
}
|
|
}
|
|
if (unichar == 'D') {
|
|
SkDebugf(" SkPoint fPoints[4] = {\n");
|
|
SkDebugf(" {%ff, %ff},\n", fPoints[0].x(), fPoints[0].y());
|
|
SkDebugf(" {%ff, %ff},\n", fPoints[1].x(), fPoints[1].y());
|
|
SkDebugf(" {%ff, %ff},\n", fPoints[2].x(), fPoints[2].y());
|
|
SkDebugf(" {%ff, %ff}\n", fPoints[3].x(), fPoints[3].y());
|
|
SkDebugf(" };\n");
|
|
return true;
|
|
}
|
|
if (unichar == 'S') {
|
|
fDoStroke = !fDoStroke;
|
|
this->updateAndInval();
|
|
}
|
|
}
|
|
return this->INHERITED::onQuery(evt);
|
|
}
|
|
|
|
DEF_SAMPLE(return new CCPRGeometryView;)
|
|
|
|
#endif // SK_SUPPORT_GPU
|