Mike Reed | 113fd34 | 2017-01-14 13:45:02 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2017 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "gm.h" |
| 9 | |
Robert Phillips | 42f3094 | 2017-01-17 10:48:52 -0500 | [diff] [blame] | 10 | // This GM tests out the deprecated Android-specific unclipped saveLayer "feature". |
| 11 | // In particular, it attempts to compare the performance of unclipped saveLayers with alternatives. |
| 12 | |
| 13 | static void save_layer_unclipped(SkCanvas* canvas, |
| 14 | SkScalar l, SkScalar t, SkScalar r, SkScalar b) { |
| 15 | static const uint32_t kSecretDeprecated_DontClipToLayerFlag = 1U << 31; |
Mike Reed | 113fd34 | 2017-01-14 13:45:02 -0500 | [diff] [blame] | 16 | SkRect rect = SkRect::MakeLTRB(l, t, r, b); |
Robert Phillips | 42f3094 | 2017-01-17 10:48:52 -0500 | [diff] [blame] | 17 | canvas->saveLayer({ &rect, nullptr, nullptr, kSecretDeprecated_DontClipToLayerFlag }); |
Mike Reed | 113fd34 | 2017-01-14 13:45:02 -0500 | [diff] [blame] | 18 | } |
| 19 | |
| 20 | static void do_draw(SkCanvas* canvas) { |
| 21 | SkPaint paint; |
| 22 | SkRandom rand; |
| 23 | |
Mike Reed | 113fd34 | 2017-01-14 13:45:02 -0500 | [diff] [blame] | 24 | for (int i = 0; i < 20; ++i) { |
Robert Phillips | 52b346e | 2017-01-19 08:37:31 -0500 | [diff] [blame] | 25 | paint.setColor(sk_tool_utils::color_to_565(rand.nextU() | (0xFF << 24))); |
Mike Reed | 113fd34 | 2017-01-14 13:45:02 -0500 | [diff] [blame] | 26 | canvas->drawRect({ 15, 15, 290, 40 }, paint); |
| 27 | canvas->translate(0, 30); |
| 28 | } |
| 29 | } |
| 30 | |
Robert Phillips | 42f3094 | 2017-01-17 10:48:52 -0500 | [diff] [blame] | 31 | class UnclippedSaveLayerGM : public skiagm::GM { |
| 32 | public: |
| 33 | enum class Mode { |
| 34 | kClipped, |
| 35 | kUnclipped |
| 36 | }; |
Mike Reed | 113fd34 | 2017-01-14 13:45:02 -0500 | [diff] [blame] | 37 | |
Robert Phillips | 42f3094 | 2017-01-17 10:48:52 -0500 | [diff] [blame] | 38 | UnclippedSaveLayerGM(Mode mode) : fMode(mode) { this->setBGColor(SK_ColorWHITE); } |
Mike Reed | 113fd34 | 2017-01-14 13:45:02 -0500 | [diff] [blame] | 39 | |
Robert Phillips | 42f3094 | 2017-01-17 10:48:52 -0500 | [diff] [blame] | 40 | protected: |
| 41 | bool runAsBench() const override { return true; } |
| 42 | |
| 43 | SkString onShortName() override { |
| 44 | if (Mode::kClipped == fMode) { |
| 45 | return SkString("savelayer_unclipped"); |
| 46 | } else { |
| 47 | SkASSERT(Mode::kUnclipped == fMode); |
| 48 | return SkString("savelayer_clipped"); |
| 49 | } |
Mike Reed | 113fd34 | 2017-01-14 13:45:02 -0500 | [diff] [blame] | 50 | } |
Robert Phillips | 42f3094 | 2017-01-17 10:48:52 -0500 | [diff] [blame] | 51 | |
| 52 | SkISize onISize() override { return SkISize::Make(320, 640); } |
| 53 | |
| 54 | void onDraw(SkCanvas* canvas) override { |
| 55 | const SkScalar L = 10; |
| 56 | const SkScalar T = 10; |
| 57 | const SkScalar R = 310; |
| 58 | const SkScalar B = 630; |
| 59 | |
| 60 | canvas->clipRect({ L, T, R, B }); |
| 61 | |
| 62 | for (int i = 0; i < 100; ++i) { |
| 63 | SkAutoCanvasRestore acr(canvas, true); |
| 64 | if (Mode::kClipped == fMode) { |
| 65 | save_layer_unclipped(canvas, L, T, R, T + 20); |
| 66 | save_layer_unclipped(canvas, L, B - 20, R, B); |
| 67 | } else { |
| 68 | SkASSERT(Mode::kUnclipped == fMode); |
| 69 | canvas->saveLayer({ L, T, R, B }, nullptr); |
| 70 | } |
| 71 | |
| 72 | do_draw(canvas); |
| 73 | } |
| 74 | } |
| 75 | |
| 76 | private: |
| 77 | Mode fMode; |
| 78 | |
| 79 | typedef skiagm::GM INHERITED; |
| 80 | }; |
| 81 | |
| 82 | ////////////////////////////////////////////////////////////////////////////// |
| 83 | |
| 84 | DEF_GM(return new UnclippedSaveLayerGM(UnclippedSaveLayerGM::Mode::kClipped);) |
| 85 | DEF_GM(return new UnclippedSaveLayerGM(UnclippedSaveLayerGM::Mode::kUnclipped);) |
| 86 | |
| 87 | |