Michael Ludwig | 08f1a25 | 2020-01-22 14:32:11 -0500 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2020 Google LLC |
| 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 | #include "gm/gm.h" |
| 8 | #include "include/core/SkCanvas.h" |
| 9 | #include "include/core/SkColor.h" |
Michael Ludwig | 949ceb2 | 2020-02-07 10:14:45 -0500 | [diff] [blame] | 10 | #include "include/core/SkImage.h" |
Mike Reed | 2a7c619 | 2020-02-21 11:19:20 -0500 | [diff] [blame] | 11 | #include "include/core/SkM44.h" |
Michael Ludwig | 08f1a25 | 2020-01-22 14:32:11 -0500 | [diff] [blame] | 12 | #include "include/core/SkMatrix.h" |
Michael Ludwig | 949ceb2 | 2020-02-07 10:14:45 -0500 | [diff] [blame] | 13 | #include "include/core/SkSurface.h" |
| 14 | #include "include/effects/SkGradientShader.h" |
Michael Ludwig | 08f1a25 | 2020-01-22 14:32:11 -0500 | [diff] [blame] | 15 | #include "tools/timer/TimeUtils.h" |
| 16 | |
Michael Ludwig | 08f1a25 | 2020-01-22 14:32:11 -0500 | [diff] [blame] | 17 | // Adapted from https://codepen.io/adamdupuis/pen/qLYzqB |
| 18 | class CrBug224618GM : public skiagm::GM { |
| 19 | public: |
| 20 | CrBug224618GM() : fTime(0.f) {} |
| 21 | |
| 22 | protected: |
| 23 | SkString onShortName() override { |
| 24 | return SkString("crbug_224618"); |
| 25 | } |
| 26 | |
| 27 | SkISize onISize() override { |
| 28 | return SkISize::Make(kMaxVW, kMaxVW); |
| 29 | } |
| 30 | |
| 31 | // This animates the FOV in viewer, to ensure the panorama covering rects are stable across |
| 32 | // a variety of perspective matrices |
| 33 | bool onAnimate(double nanos) override { |
| 34 | fTime = TimeUtils::Scaled(1e-9f * nanos, 0.5f); |
| 35 | return true; |
| 36 | } |
| 37 | |
Michael Ludwig | 949ceb2 | 2020-02-07 10:14:45 -0500 | [diff] [blame] | 38 | void onOnceBeforeDraw() override { |
| 39 | static const SkColor kColors[2] = {SK_ColorTRANSPARENT, SkColorSetARGB(128, 255, 255, 255)}; |
| 40 | sk_sp<SkShader> gradient = SkGradientShader::MakeRadial( |
| 41 | {200.f, 200.f}, 25.f, kColors, nullptr, 2, SkTileMode::kMirror, |
| 42 | SkGradientShader::kInterpolateColorsInPremul_Flag, nullptr); |
| 43 | |
| 44 | sk_sp<SkSurface> surface = SkSurface::MakeRasterN32Premul(400, 400); |
| 45 | |
| 46 | SkPaint bgPaint; |
| 47 | bgPaint.setShader(gradient); |
| 48 | surface->getCanvas()->drawPaint(bgPaint); |
| 49 | |
| 50 | fCubeImage = surface->makeImageSnapshot(); |
| 51 | } |
| 52 | |
Michael Ludwig | 08f1a25 | 2020-01-22 14:32:11 -0500 | [diff] [blame] | 53 | void onDraw(SkCanvas* canvas) override { |
| 54 | SkScalar viewportWidth = SkScalarMod(fTime, 10.f) / 10.f * (kMaxVW - kMinVW) + kMinVW; |
| 55 | SkScalar radius = viewportWidth / 2.f; // round? |
| 56 | // See https://developer.mozilla.org/en-US/docs/Web/CSS/transform-function/perspective |
| 57 | SkM44 proj{1.f, 0.f, 0.f, 0.f, |
| 58 | 0.f, 1.f, 0.f, 0.f, |
| 59 | 0.f, 0.f, 1.f, 0.f, |
| 60 | 0.f, 0.f, -1.f / radius, 1.f}; |
| 61 | SkM44 zoom = SkM44::Translate(0.f, 0.f, radius); |
| 62 | SkM44 postZoom = SkM44::Translate(0.f, 0.f, -radius - 1.f); |
Mike Reed | 2a7c619 | 2020-02-21 11:19:20 -0500 | [diff] [blame] | 63 | SkM44 rotateHorizontal = SkM44::Rotate({0, 1, 0}, 2.356194490192345f); |
Michael Ludwig | 08f1a25 | 2020-01-22 14:32:11 -0500 | [diff] [blame] | 64 | |
| 65 | // w in degrees will need to be converted to radians |
| 66 | SkV4 axisAngles[6] = { |
| 67 | {0.f, 1.f, 0.f, -90.f}, // rotateY(-90deg) |
| 68 | {1.f, 0.f, 0.f, 0.f}, // <none> |
| 69 | {0.f, 1.f, 0.f, 90.f}, // rotateY(90deg) |
| 70 | {0.f, 1.f, 0.f, 180.f}, // rotateY(180deg) |
| 71 | {1.f, 0.f, 0.f, -90.f}, // rotateX(-90deg) |
| 72 | {1.f, 0.f, 0.f, 90.f}, // rotateX(90deg) |
| 73 | }; |
| 74 | SkColor faceColors[6] = { |
| 75 | SK_ColorRED, |
| 76 | SK_ColorGREEN, |
| 77 | SK_ColorBLUE, |
| 78 | SK_ColorYELLOW, |
| 79 | SkColorSetARGB(0xFF, 0xFF, 0xA5, 0x00), // orange css |
| 80 | SkColorSetARGB(0xFF, 0x80, 0x00, 0x80) // purple css |
| 81 | }; |
Michael Ludwig | 949ceb2 | 2020-02-07 10:14:45 -0500 | [diff] [blame] | 82 | |
Michael Ludwig | 08f1a25 | 2020-01-22 14:32:11 -0500 | [diff] [blame] | 83 | for (int i = 0; i < 6; ++i) { |
Mike Reed | 2a7c619 | 2020-02-21 11:19:20 -0500 | [diff] [blame] | 84 | SkM44 model = SkM44::Rotate({axisAngles[i].x, axisAngles[i].y, axisAngles[i].z}, |
Michael Ludwig | 08f1a25 | 2020-01-22 14:32:11 -0500 | [diff] [blame] | 85 | SkDegreesToRadians(axisAngles[i].w)); |
| 86 | model = SkM44::Translate(radius, radius) * proj * // project and place content |
| 87 | zoom * rotateHorizontal * model * postZoom * // main model matrix |
| 88 | SkM44::Translate(-radius, -radius); // center content |
| 89 | |
| 90 | canvas->save(); |
Mike Reed | 46f5c5f | 2020-02-20 15:42:29 -0500 | [diff] [blame] | 91 | canvas->concat44(model); |
Michael Ludwig | 08f1a25 | 2020-01-22 14:32:11 -0500 | [diff] [blame] | 92 | |
| 93 | SkPaint fillPaint; |
| 94 | fillPaint.setAntiAlias(true); |
Michael Ludwig | 949ceb2 | 2020-02-07 10:14:45 -0500 | [diff] [blame] | 95 | fillPaint.setFilterQuality(kLow_SkFilterQuality); |
Michael Ludwig | 08f1a25 | 2020-01-22 14:32:11 -0500 | [diff] [blame] | 96 | fillPaint.setColor(faceColors[i]); |
| 97 | |
Michael Ludwig | 949ceb2 | 2020-02-07 10:14:45 -0500 | [diff] [blame] | 98 | // Leverages GrFillRectOp on GPU backend |
Michael Ludwig | 08f1a25 | 2020-01-22 14:32:11 -0500 | [diff] [blame] | 99 | canvas->drawRect(SkRect::MakeWH(viewportWidth, viewportWidth), fillPaint); |
Michael Ludwig | 949ceb2 | 2020-02-07 10:14:45 -0500 | [diff] [blame] | 100 | |
| 101 | // Leverages GrTextureOp on GPU backend, to ensure sure both quad paths handle clipping |
| 102 | canvas->drawImageRect(fCubeImage.get(), |
| 103 | SkRect::MakeWH(fCubeImage->width(), fCubeImage->height()), |
| 104 | SkRect::MakeWH(viewportWidth, viewportWidth), &fillPaint, |
| 105 | SkCanvas::kFast_SrcRectConstraint); |
| 106 | |
Michael Ludwig | 08f1a25 | 2020-01-22 14:32:11 -0500 | [diff] [blame] | 107 | canvas->restore(); |
| 108 | } |
| 109 | } |
| 110 | private: |
| 111 | static const int kMaxVW = 800; |
| 112 | static const int kMinVW = 300; |
Michael Ludwig | 949ceb2 | 2020-02-07 10:14:45 -0500 | [diff] [blame] | 113 | |
Michael Ludwig | 08f1a25 | 2020-01-22 14:32:11 -0500 | [diff] [blame] | 114 | SkScalar fTime; |
Michael Ludwig | 949ceb2 | 2020-02-07 10:14:45 -0500 | [diff] [blame] | 115 | sk_sp<SkImage> fCubeImage; |
Michael Ludwig | 08f1a25 | 2020-01-22 14:32:11 -0500 | [diff] [blame] | 116 | }; |
| 117 | |
| 118 | DEF_GM(return new CrBug224618GM();) |