| |
| /* |
| * Copyright 2014 Google Inc. |
| * |
| * Use of this source code is governed by a BSD-style license that can be |
| * found in the LICENSE file. |
| */ |
| |
| #include "gm.h" |
| #if SK_SUPPORT_GPU |
| #include "GrFragmentProcessor.h" |
| #include "GrCoordTransform.h" |
| #include "gl/GrGLProcessor.h" |
| #include "gl/builders/GrGLProgramBuilder.h" |
| #include "Resources.h" |
| #include "SkReadBuffer.h" |
| #include "SkShader.h" |
| #include "SkStream.h" |
| #include "SkTypeface.h" |
| #include "SkWriteBuffer.h" |
| |
| namespace skiagm { |
| |
| /////////////////////////////////////////////////////////////////////////////// |
| |
| class DCShader : public SkShader { |
| public: |
| DCShader(const SkMatrix& matrix) : fDeviceMatrix(matrix) {} |
| |
| SK_DECLARE_PUBLIC_FLATTENABLE_DESERIALIZATION_PROCS(DCShader); |
| |
| void flatten(SkWriteBuffer& buf) const override { |
| buf.writeMatrix(fDeviceMatrix); |
| } |
| |
| bool asFragmentProcessor(GrContext*, const SkPaint& paint, const SkMatrix& viewM, |
| const SkMatrix* localMatrix, GrColor* color, GrProcessorDataManager*, |
| GrFragmentProcessor** fp) const override; |
| |
| #ifndef SK_IGNORE_TO_STRING |
| void toString(SkString* str) const override { |
| str->appendf("DCShader: ()"); |
| } |
| #endif |
| |
| private: |
| const SkMatrix fDeviceMatrix; |
| }; |
| |
| SkFlattenable* DCShader::CreateProc(SkReadBuffer& buf) { |
| SkMatrix matrix; |
| buf.readMatrix(&matrix); |
| return SkNEW_ARGS(DCShader, (matrix)); |
| } |
| |
| class DCFP : public GrFragmentProcessor { |
| public: |
| DCFP(GrProcessorDataManager*, const SkMatrix& m) : fDeviceTransform(kDevice_GrCoordSet, m) { |
| this->addCoordTransform(&fDeviceTransform); |
| this->initClassID<DCFP>(); |
| } |
| |
| void getGLProcessorKey(const GrGLSLCaps& caps, |
| GrProcessorKeyBuilder* b) const override {} |
| |
| GrGLFragmentProcessor* createGLInstance() const override { |
| class DCGLFP : public GrGLFragmentProcessor { |
| void emitCode(GrGLFPBuilder* builder, |
| const GrFragmentProcessor& fp, |
| const char* outputColor, |
| const char* inputColor, |
| const TransformedCoordsArray& coords, |
| const TextureSamplerArray& samplers) override { |
| GrGLFragmentBuilder* fpb = builder->getFragmentShaderBuilder(); |
| fpb->codeAppendf("vec2 c = %s;", fpb->ensureFSCoords2D(coords, 0).c_str()); |
| fpb->codeAppend("vec2 r = mod(c, vec2(20.0));"); |
| fpb->codeAppend("vec4 color = vec4(0.5*sin(c.x / 15.0) + 0.5," |
| "0.5*cos((c.x + c.y) / 15.0) + 0.5," |
| "(r.x + r.y) / 20.0," |
| "distance(r, vec2(15.0)) / 20.0 + 0.2);"); |
| fpb->codeAppendf("color.rgb *= color.a;" |
| "%s = color * %s;", |
| outputColor, GrGLSLExpr4(inputColor).c_str()); |
| } |
| void setData(const GrGLProgramDataManager&, const GrProcessor&) override {} |
| }; |
| return SkNEW(DCGLFP); |
| } |
| |
| const char* name() const override { return "DCFP"; } |
| |
| void onComputeInvariantOutput(GrInvariantOutput* inout) const override { |
| inout->mulByUnknownFourComponents(); |
| } |
| |
| private: |
| bool onIsEqual(const GrFragmentProcessor&) const override { return true; } |
| |
| GrCoordTransform fDeviceTransform; |
| }; |
| |
| bool DCShader::asFragmentProcessor(GrContext*, const SkPaint& paint, const SkMatrix& viewM, |
| const SkMatrix* localMatrix, GrColor* color, |
| GrProcessorDataManager* procDataManager, |
| GrFragmentProcessor** fp) const { |
| *fp = SkNEW_ARGS(DCFP, (procDataManager, fDeviceMatrix)); |
| *color = GrColorPackA4(paint.getAlpha()); |
| return true; |
| } |
| |
| class DCShaderGM : public GM { |
| public: |
| DCShaderGM() { |
| this->setBGColor(sk_tool_utils::color_to_565(0xFFAABBCC)); |
| } |
| |
| ~DCShaderGM() override { |
| for (int i = 0; i < fPrims.count(); ++i) { |
| SkDELETE(fPrims[i]); |
| } |
| } |
| |
| protected: |
| |
| SkString onShortName() override { |
| return SkString("dcshader"); |
| } |
| |
| SkISize onISize() override { return SkISize::Make(1000, 900); } |
| |
| void onOnceBeforeDraw() override { |
| struct Rect : public Prim { |
| SkRect draw(SkCanvas* canvas, const SkPaint& paint) override { |
| SkRect rect = SkRect::MakeXYWH(0, 0, 50, 50); |
| canvas->drawRect(rect, paint); |
| return rect; |
| } |
| }; |
| |
| struct Circle : public Prim { |
| SkRect draw(SkCanvas* canvas, const SkPaint& paint) override { |
| static const SkScalar radius = 25; |
| canvas->drawCircle(radius, radius, radius, paint); |
| return SkRect::MakeXYWH(0, 0, 2 * radius, 2 * radius); |
| } |
| }; |
| |
| struct RRect : public Prim { |
| SkRect draw(SkCanvas* canvas, const SkPaint& paint) override { |
| SkRRect rrect; |
| rrect.setRectXY(SkRect::MakeXYWH(0, 0, 50, 50), 10, 10); |
| canvas->drawRRect(rrect, paint); |
| return rrect.getBounds(); |
| } |
| }; |
| |
| struct DRRect : public Prim { |
| SkRect draw(SkCanvas* canvas, const SkPaint& paint) override { |
| SkRRect outerRRect; |
| outerRRect.setRectXY(SkRect::MakeXYWH(0, 0, 50, 50), 5, 5); |
| SkRRect innerRRect; |
| innerRRect.setRectXY(SkRect::MakeXYWH(5, 8, 35, 30), 8, 3); |
| canvas->drawDRRect(outerRRect, innerRRect, paint); |
| return outerRRect.getBounds(); |
| } |
| }; |
| struct Path : public Prim { |
| SkRect draw(SkCanvas* canvas, const SkPaint& paint) override { |
| SkPath path; |
| path.addCircle(15, 15, 10); |
| path.addOval(SkRect::MakeXYWH(2, 2, 22, 37)); |
| path.setFillType(SkPath::kEvenOdd_FillType); |
| canvas->drawPath(path, paint); |
| return path.getBounds(); |
| } |
| }; |
| |
| struct Points : public Prim { |
| Points(SkCanvas::PointMode mode) : fMode(mode) {} |
| |
| SkRect draw(SkCanvas* canvas, const SkPaint& paint) override { |
| SkRandom random; |
| SkPoint points[500]; |
| SkRect bounds = SkRect::MakeWH(50, 50); |
| int count = SkToInt(SK_ARRAY_COUNT(points)); |
| if (SkCanvas::kPoints_PointMode != fMode) { |
| count = SkTMin(count, 10); |
| } |
| for (int p = 0; p < count; ++p) { |
| points[p].fX = random.nextUScalar1() * bounds.width(); |
| points[p].fY = random.nextUScalar1() * bounds.width(); |
| } |
| canvas->drawPoints(fMode, count, points, paint); |
| return bounds; |
| } |
| SkCanvas::PointMode fMode; |
| }; |
| |
| struct Text : public Prim { |
| SkRect draw(SkCanvas* canvas, const SkPaint& origPaint) override { |
| SkPaint paint = origPaint; |
| paint.setTextSize(30.f); |
| this->setFont(&paint); |
| const char* text = this->text(); |
| static const SkVector offset = SkVector::Make(10, 10); |
| canvas->drawText(text, strlen(text), offset.fX, offset.fY, paint); |
| SkRect bounds; |
| paint.measureText(text, strlen(text), &bounds); |
| bounds.offset(offset); |
| return bounds; |
| } |
| |
| virtual void setFont(SkPaint* paint) { |
| sk_tool_utils::set_portable_typeface_always(paint); |
| } |
| |
| virtual const char* text() const { return "Hello, Skia!"; } |
| }; |
| |
| struct BmpText : public Text { |
| void setFont(SkPaint* paint) override { |
| if (!fTypeface) { |
| fTypeface.reset(GetResourceAsTypeface("/fonts/Funkster.ttf")); |
| } |
| paint->setTypeface(fTypeface); |
| } |
| |
| const char* text() const override { return "Hi, Skia!"; } |
| |
| SkAutoTUnref<SkTypeface> fTypeface; |
| }; |
| fPrims.push_back(SkNEW(Rect)); |
| fPrims.push_back(SkNEW(Circle)); |
| fPrims.push_back(SkNEW(RRect)); |
| fPrims.push_back(SkNEW(DRRect)); |
| fPrims.push_back(SkNEW(Path)); |
| fPrims.push_back(SkNEW(Points(SkCanvas::kPoints_PointMode))); |
| fPrims.push_back(SkNEW(Points(SkCanvas::kLines_PointMode))); |
| fPrims.push_back(SkNEW(Points(SkCanvas::kPolygon_PointMode))); |
| fPrims.push_back(SkNEW(Text)); |
| fPrims.push_back(SkNEW(BmpText)); |
| } |
| |
| void onDraw(SkCanvas* canvas) override { |
| // This GM exists to test a specific feature of the GPU backend. It does not work with the |
| // sw rasterizer, tile modes, etc. |
| if (NULL == canvas->getGrContext()) { |
| this->drawGpuOnlyMessage(canvas); |
| return; |
| } |
| SkPaint paint; |
| SkTArray<SkMatrix> devMats; |
| devMats.push_back().reset(); |
| devMats.push_back().setRotate(45, 500, 500); |
| devMats.push_back().setRotate(-30, 200, 200); |
| devMats.back().setPerspX(-SK_Scalar1 / 2000); |
| devMats.back().setPerspY(SK_Scalar1 / 1000); |
| |
| |
| SkTArray<SkMatrix> viewMats; |
| viewMats.push_back().setScale(0.75f, 0.75f); |
| viewMats.push_back().setRotate(45, 50, 50); |
| viewMats.back().postScale(0.5f, 1.1f); |
| |
| canvas->translate(10, 20); |
| canvas->save(); |
| SkScalar tx = 0, maxTy = 0; |
| static const SkScalar kW = 900; |
| |
| for (int aa = 0; aa < 2; ++aa) { |
| for (int i = 0; i < fPrims.count(); ++i) { |
| for (int j = 0; j < devMats.count(); ++j) { |
| for (int k = 0; k < viewMats.count(); ++k) { |
| paint.setShader(SkNEW_ARGS(DCShader, (devMats[j])))->unref(); |
| paint.setAntiAlias(SkToBool(aa)); |
| canvas->save(); |
| canvas->concat(viewMats[k]); |
| SkRect bounds = fPrims[i]->draw(canvas, paint); |
| canvas->restore(); |
| viewMats[k].mapRect(&bounds); |
| // add margins |
| bounds.fRight += 20; |
| bounds.fBottom += 20; |
| canvas->translate(bounds.fRight, 0); |
| tx += bounds.fRight; |
| maxTy = SkTMax(bounds.fBottom, maxTy); |
| if (tx > kW) { |
| tx = 0; |
| canvas->restore(); |
| canvas->translate(0, maxTy); |
| canvas->save(); |
| maxTy = 0; |
| } |
| } |
| } |
| } |
| } |
| canvas->restore(); |
| } |
| |
| private: |
| struct Prim { |
| virtual ~Prim() {} |
| virtual SkRect draw(SkCanvas*, const SkPaint&) = 0; |
| }; |
| |
| SkTArray<Prim*> fPrims; |
| |
| typedef GM INHERITED; |
| }; |
| |
| DEF_GM( return SkNEW(DCShaderGM); ) |
| } |
| #endif |