brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2016 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 | |
raftias | 7c602de | 2016-10-13 10:45:44 -0700 | [diff] [blame] | 10 | #include "SkColorSpace_Base.h" |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 11 | #include "SkGradientShader.h" |
| 12 | #include "SkPM4fPriv.h" |
raftias | 7c602de | 2016-10-13 10:45:44 -0700 | [diff] [blame] | 13 | #include "SkSurface.h" |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 14 | |
| 15 | static const int gRectSize = 50; |
| 16 | static const SkScalar gScalarSize = SkIntToScalar(gRectSize); |
| 17 | static const int gTestWidth = 700; |
| 18 | static const int gTestHeight = 300; |
| 19 | |
| 20 | struct CellRenderer { |
| 21 | virtual void draw(SkCanvas* canvas) = 0; |
| 22 | virtual const char* label() = 0; |
| 23 | virtual ~CellRenderer() {} |
| 24 | }; |
| 25 | |
| 26 | struct PaintColorCellRenderer : public CellRenderer { |
| 27 | PaintColorCellRenderer(SkColor color) : fColor(color) {} |
| 28 | void draw(SkCanvas* canvas) override { |
| 29 | canvas->drawColor(fColor); |
| 30 | } |
| 31 | const char* label() override { |
| 32 | return "Paint Color"; |
| 33 | } |
| 34 | protected: |
| 35 | SkColor fColor; |
| 36 | }; |
| 37 | |
| 38 | struct BitmapCellRenderer : public CellRenderer { |
| 39 | BitmapCellRenderer(SkColor color, SkFilterQuality quality, float scale = 1.0f) |
| 40 | : fQuality(quality) { |
| 41 | int scaledSize = SkFloatToIntRound(scale * gRectSize); |
| 42 | fBitmap.allocPixels(SkImageInfo::MakeS32(scaledSize, scaledSize, kPremul_SkAlphaType)); |
| 43 | fBitmap.eraseColor(color); |
| 44 | const char* qualityNames[] = { "None", "Low", "Medium", "High" }; |
| 45 | fLabel = SkStringPrintf("Bitmap (%s)", qualityNames[quality]); |
| 46 | } |
| 47 | void draw(SkCanvas* canvas) override { |
| 48 | SkPaint paint; |
| 49 | paint.setFilterQuality(fQuality); |
| 50 | canvas->drawBitmapRect(fBitmap, SkRect::MakeIWH(gRectSize, gRectSize), &paint); |
| 51 | } |
| 52 | const char* label() override { |
| 53 | return fLabel.c_str(); |
| 54 | } |
| 55 | protected: |
| 56 | SkFilterQuality fQuality; |
| 57 | SkBitmap fBitmap; |
| 58 | SkString fLabel; |
| 59 | }; |
| 60 | |
| 61 | struct GradientCellRenderer : public CellRenderer { |
brianosman | d454609 | 2016-09-22 12:31:58 -0700 | [diff] [blame] | 62 | GradientCellRenderer(SkColor colorOne, SkColor colorTwo, bool manyStops) { |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 63 | fColors[0] = colorOne; |
| 64 | fColors[1] = colorTwo; |
brianosman | d454609 | 2016-09-22 12:31:58 -0700 | [diff] [blame] | 65 | fManyStops = manyStops; |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 66 | } |
| 67 | void draw(SkCanvas* canvas) override { |
| 68 | SkPoint points[2] = { |
| 69 | SkPoint::Make(0, 0), |
| 70 | SkPoint::Make(0, gScalarSize) |
| 71 | }; |
| 72 | SkPaint paint; |
brianosman | d454609 | 2016-09-22 12:31:58 -0700 | [diff] [blame] | 73 | if (fManyStops) { |
| 74 | SkColor colors[4] ={ |
| 75 | fColors[0], fColors[0], fColors[1], fColors[1] |
| 76 | }; |
| 77 | paint.setShader(SkGradientShader::MakeLinear(points, colors, nullptr, 4, |
| 78 | SkShader::kClamp_TileMode)); |
| 79 | } else { |
| 80 | paint.setShader(SkGradientShader::MakeLinear(points, fColors, nullptr, 2, |
| 81 | SkShader::kClamp_TileMode)); |
| 82 | } |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 83 | canvas->drawPaint(paint); |
| 84 | } |
| 85 | const char* label() override { |
| 86 | return "Linear Gradient"; |
| 87 | } |
| 88 | protected: |
| 89 | SkColor fColors[2]; |
brianosman | d454609 | 2016-09-22 12:31:58 -0700 | [diff] [blame] | 90 | bool fManyStops; |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 91 | }; |
| 92 | |
| 93 | struct VerticesCellRenderer : public CellRenderer { |
| 94 | VerticesCellRenderer(SkColor colorOne, SkColor colorTwo) { |
| 95 | fColors[0] = fColors[1] = colorOne; |
| 96 | fColors[2] = fColors[3] = colorTwo; |
| 97 | } |
| 98 | void draw(SkCanvas* canvas) override { |
| 99 | SkPaint paint; |
| 100 | SkPoint vertices[4] = { |
| 101 | SkPoint::Make(0, 0), |
| 102 | SkPoint::Make(gScalarSize, 0), |
| 103 | SkPoint::Make(gScalarSize, gScalarSize), |
| 104 | SkPoint::Make(0, gScalarSize) |
| 105 | }; |
| 106 | canvas->drawVertices(SkCanvas::kTriangleFan_VertexMode, 4, vertices, nullptr, fColors, |
Mike Reed | 7d954ad | 2016-10-28 15:42:34 -0400 | [diff] [blame] | 107 | SkBlendMode::kModulate, nullptr, 0, paint); |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 108 | } |
| 109 | const char* label() override { |
| 110 | return "Vertices"; |
| 111 | } |
| 112 | protected: |
| 113 | SkColor fColors[4]; |
| 114 | }; |
| 115 | |
Ben Wagner | 145dbcd | 2016-11-03 14:40:50 -0400 | [diff] [blame] | 116 | static void draw_gamut_grid(SkCanvas* canvas, SkTArray<std::unique_ptr<CellRenderer>>& renderers) { |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 117 | // We want our colors in our wide gamut to be obviously visibly distorted from sRGB, so we use |
| 118 | // Wide Gamut RGB (with sRGB gamma, for HW acceleration) as the working space for this test: |
| 119 | const float gWideGamutRGB_toXYZD50[]{ |
brianosman | de68d6c | 2016-09-09 10:36:17 -0700 | [diff] [blame] | 120 | 0.7161046f, 0.1009296f, 0.1471858f, // -> X |
| 121 | 0.2581874f, 0.7249378f, 0.0168748f, // -> Y |
| 122 | 0.0000000f, 0.0517813f, 0.7734287f, // -> Z |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 123 | }; |
| 124 | |
| 125 | SkMatrix44 wideGamutRGB_toXYZD50(SkMatrix44::kUninitialized_Constructor); |
| 126 | wideGamutRGB_toXYZD50.set3x3RowMajorf(gWideGamutRGB_toXYZD50); |
| 127 | |
| 128 | // Use the original canvas' color type, but account for gamma requirements |
fmalita | ed38772 | 2016-09-30 06:14:49 -0700 | [diff] [blame] | 129 | SkImageInfo origInfo = canvas->imageInfo(); |
raftias | 9488833 | 2016-10-18 10:02:51 -0700 | [diff] [blame] | 130 | sk_sp<SkColorSpace> srgbCS; |
| 131 | sk_sp<SkColorSpace> wideCS; |
fmalita | ed38772 | 2016-09-30 06:14:49 -0700 | [diff] [blame] | 132 | switch (origInfo.colorType()) { |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 133 | case kRGBA_8888_SkColorType: |
| 134 | case kBGRA_8888_SkColorType: |
Brian Osman | 526972e | 2016-10-24 09:24:02 -0400 | [diff] [blame] | 135 | srgbCS = SkColorSpace::MakeNamed(SkColorSpace::kSRGB_Named); |
| 136 | wideCS = SkColorSpace::MakeRGB(SkColorSpace::kSRGB_RenderTargetGamma, |
raftias | 9488833 | 2016-10-18 10:02:51 -0700 | [diff] [blame] | 137 | wideGamutRGB_toXYZD50); |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 138 | break; |
| 139 | case kRGBA_F16_SkColorType: |
Brian Osman | 526972e | 2016-10-24 09:24:02 -0400 | [diff] [blame] | 140 | srgbCS = SkColorSpace::MakeNamed(SkColorSpace::kSRGBLinear_Named); |
| 141 | wideCS = SkColorSpace::MakeRGB(SkColorSpace::kLinear_RenderTargetGamma, |
raftias | 9488833 | 2016-10-18 10:02:51 -0700 | [diff] [blame] | 142 | wideGamutRGB_toXYZD50); |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 143 | break; |
| 144 | default: |
| 145 | return; |
| 146 | } |
raftias | 9488833 | 2016-10-18 10:02:51 -0700 | [diff] [blame] | 147 | SkASSERT(srgbCS); |
| 148 | SkASSERT(wideCS); |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 149 | |
| 150 | // Make our two working surfaces (one sRGB, one Adobe) |
fmalita | ed38772 | 2016-09-30 06:14:49 -0700 | [diff] [blame] | 151 | SkImageInfo srgbGamutInfo = SkImageInfo::Make(gRectSize, gRectSize, origInfo.colorType(), |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 152 | kPremul_SkAlphaType, srgbCS); |
fmalita | ed38772 | 2016-09-30 06:14:49 -0700 | [diff] [blame] | 153 | SkImageInfo wideGamutInfo = SkImageInfo::Make(gRectSize, gRectSize, origInfo.colorType(), |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 154 | kPremul_SkAlphaType, wideCS); |
| 155 | // readPixels doesn't do color conversion (yet), so we can use it to see the raw (wide) data |
| 156 | SkImageInfo dstInfo = srgbGamutInfo.makeColorSpace(nullptr); |
| 157 | sk_sp<SkSurface> srgbGamutSurface = canvas->makeSurface(srgbGamutInfo); |
| 158 | sk_sp<SkSurface> wideGamutSurface = canvas->makeSurface(wideGamutInfo); |
fmalita | ed38772 | 2016-09-30 06:14:49 -0700 | [diff] [blame] | 159 | if (!srgbGamutSurface || !wideGamutSurface) { |
| 160 | return; |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 161 | } |
| 162 | SkCanvas* srgbGamutCanvas = srgbGamutSurface->getCanvas(); |
| 163 | SkCanvas* wideGamutCanvas = wideGamutSurface->getCanvas(); |
| 164 | |
| 165 | SkPaint textPaint; |
| 166 | textPaint.setAntiAlias(true); |
| 167 | textPaint.setColor(SK_ColorWHITE); |
| 168 | sk_tool_utils::set_portable_typeface(&textPaint); |
| 169 | |
| 170 | SkScalar x = 0, y = 0; |
| 171 | SkScalar textHeight = textPaint.getFontSpacing(); |
| 172 | |
| 173 | for (const auto& renderer : renderers) { |
| 174 | srgbGamutCanvas->clear(SK_ColorBLACK); |
| 175 | renderer->draw(srgbGamutCanvas); |
| 176 | wideGamutCanvas->clear(SK_ColorBLACK); |
| 177 | renderer->draw(wideGamutCanvas); |
| 178 | |
| 179 | canvas->drawText(renderer->label(), strlen(renderer->label()), x, y + textHeight, |
| 180 | textPaint); |
| 181 | |
| 182 | SkBitmap srgbBitmap; |
| 183 | srgbBitmap.setInfo(dstInfo); |
| 184 | srgbGamutCanvas->readPixels(&srgbBitmap, 0, 0); |
| 185 | canvas->drawBitmap(srgbBitmap, x, y + textHeight + 5); |
| 186 | x += (gScalarSize + 1); |
| 187 | |
| 188 | SkBitmap wideBitmap; |
| 189 | wideBitmap.setInfo(dstInfo); |
| 190 | wideGamutCanvas->readPixels(&wideBitmap, 0, 0); |
| 191 | canvas->drawBitmap(wideBitmap, x, y + textHeight + 5); |
| 192 | x += (gScalarSize + 10); |
| 193 | |
| 194 | if (x + (2 * gScalarSize + 1) > gTestWidth) { |
| 195 | x = 0; |
| 196 | y += (textHeight + gScalarSize + 10); |
| 197 | } |
| 198 | } |
| 199 | } |
| 200 | |
| 201 | DEF_SIMPLE_GM_BG(gamut, canvas, gTestWidth, gTestHeight, SK_ColorBLACK) { |
Ben Wagner | 145dbcd | 2016-11-03 14:40:50 -0400 | [diff] [blame] | 202 | SkTArray<std::unique_ptr<CellRenderer>> renderers; |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 203 | |
| 204 | // sRGB primaries, rendered as paint color |
Ben Wagner | 145dbcd | 2016-11-03 14:40:50 -0400 | [diff] [blame] | 205 | renderers.emplace_back(new PaintColorCellRenderer(SK_ColorRED)); |
| 206 | renderers.emplace_back(new PaintColorCellRenderer(SK_ColorGREEN)); |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 207 | |
| 208 | // sRGB primaries, rendered as bitmaps |
Ben Wagner | 145dbcd | 2016-11-03 14:40:50 -0400 | [diff] [blame] | 209 | renderers.emplace_back(new BitmapCellRenderer(SK_ColorRED, kNone_SkFilterQuality)); |
| 210 | renderers.emplace_back(new BitmapCellRenderer(SK_ColorGREEN, kLow_SkFilterQuality)); |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 211 | // Larger bitmap to trigger mipmaps |
Ben Wagner | 145dbcd | 2016-11-03 14:40:50 -0400 | [diff] [blame] | 212 | renderers.emplace_back(new BitmapCellRenderer(SK_ColorRED, kMedium_SkFilterQuality, 2.0f)); |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 213 | // Smaller bitmap to trigger bicubic |
Ben Wagner | 145dbcd | 2016-11-03 14:40:50 -0400 | [diff] [blame] | 214 | renderers.emplace_back(new BitmapCellRenderer(SK_ColorGREEN, kHigh_SkFilterQuality, 0.5f)); |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 215 | |
| 216 | // Various gradients involving sRGB primaries and white/black |
brianosman | d454609 | 2016-09-22 12:31:58 -0700 | [diff] [blame] | 217 | |
| 218 | // First with just two stops (implemented with uniforms on GPU) |
Ben Wagner | 145dbcd | 2016-11-03 14:40:50 -0400 | [diff] [blame] | 219 | renderers.emplace_back(new GradientCellRenderer(SK_ColorRED, SK_ColorGREEN, false)); |
| 220 | renderers.emplace_back(new GradientCellRenderer(SK_ColorGREEN, SK_ColorBLACK, false)); |
| 221 | renderers.emplace_back(new GradientCellRenderer(SK_ColorGREEN, SK_ColorWHITE, false)); |
brianosman | d454609 | 2016-09-22 12:31:58 -0700 | [diff] [blame] | 222 | |
| 223 | // ... and then with four stops (implemented with textures on GPU) |
Ben Wagner | 145dbcd | 2016-11-03 14:40:50 -0400 | [diff] [blame] | 224 | renderers.emplace_back(new GradientCellRenderer(SK_ColorRED, SK_ColorGREEN, true)); |
| 225 | renderers.emplace_back(new GradientCellRenderer(SK_ColorGREEN, SK_ColorBLACK, true)); |
| 226 | renderers.emplace_back(new GradientCellRenderer(SK_ColorGREEN, SK_ColorWHITE, true)); |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 227 | |
| 228 | // Vertex colors |
Ben Wagner | 145dbcd | 2016-11-03 14:40:50 -0400 | [diff] [blame] | 229 | renderers.emplace_back(new VerticesCellRenderer(SK_ColorRED, SK_ColorRED)); |
| 230 | renderers.emplace_back(new VerticesCellRenderer(SK_ColorRED, SK_ColorGREEN)); |
brianosman | 2c4b64e | 2016-09-07 07:04:44 -0700 | [diff] [blame] | 231 | |
| 232 | draw_gamut_grid(canvas, renderers); |
| 233 | } |