commit-bot@chromium.org | 103f2d0 | 2013-08-08 21:13:38 +0000 | [diff] [blame] | 1 | |
| 2 | /* |
| 3 | * Copyright 2013 Google Inc. |
| 4 | * |
| 5 | * Use of this source code is governed by a BSD-style license that can be |
| 6 | * found in the LICENSE file. |
| 7 | */ |
| 8 | #include "gm.h" |
| 9 | #include "SkBitmap.h" |
| 10 | #include "SkGradientShader.h" |
| 11 | #include "SkXfermode.h" |
| 12 | #include "SkColorPriv.h" |
| 13 | |
| 14 | #if SK_SUPPORT_GPU |
| 15 | #include "GrContext.h" |
| 16 | #include "SkGpuDevice.h" |
| 17 | #endif |
| 18 | |
| 19 | namespace skiagm { |
| 20 | |
| 21 | /** |
| 22 | * This tests drawing device-covering rects with solid colors and bitmap shaders over a |
| 23 | * checkerboard background using different xfermodes. |
| 24 | */ |
| 25 | class Xfermodes3GM : public GM { |
| 26 | public: |
| 27 | Xfermodes3GM() {} |
| 28 | |
| 29 | protected: |
| 30 | virtual SkString onShortName() SK_OVERRIDE { |
| 31 | return SkString("xfermodes3"); |
| 32 | } |
| 33 | |
| 34 | virtual SkISize onISize() SK_OVERRIDE { |
commit-bot@chromium.org | de1559c | 2013-08-14 19:20:45 +0000 | [diff] [blame] | 35 | return make_isize(630, 1215); |
commit-bot@chromium.org | 103f2d0 | 2013-08-08 21:13:38 +0000 | [diff] [blame] | 36 | } |
| 37 | |
| 38 | virtual void onDrawBackground(SkCanvas* canvas) SK_OVERRIDE { |
| 39 | SkPaint bgPaint; |
| 40 | bgPaint.setColor(0xFF70D0E0); |
| 41 | canvas->drawPaint(bgPaint); |
| 42 | } |
| 43 | |
| 44 | virtual void onDraw(SkCanvas* canvas) SK_OVERRIDE { |
| 45 | canvas->translate(SkIntToScalar(10), SkIntToScalar(20)); |
| 46 | |
| 47 | SkPaint labelP; |
| 48 | labelP.setAntiAlias(true); |
| 49 | |
| 50 | static const SkColor kSolidColors[] = { |
| 51 | SK_ColorTRANSPARENT, |
| 52 | SK_ColorBLUE, |
| 53 | 0x80808000 |
| 54 | }; |
| 55 | |
| 56 | static const SkColor kBmpAlphas[] = { |
| 57 | 0xff, |
| 58 | 0x80, |
| 59 | }; |
| 60 | |
| 61 | SkAutoTUnref<SkCanvas> tempCanvas(this->possiblyCreateTempCanvas(canvas, kSize, kSize)); |
| 62 | |
| 63 | int test = 0; |
| 64 | int x = 0, y = 0; |
commit-bot@chromium.org | de1559c | 2013-08-14 19:20:45 +0000 | [diff] [blame] | 65 | static const struct { SkPaint::Style fStyle; SkScalar fWidth; } kStrokes[] = { |
| 66 | {SkPaint::kFill_Style, 0}, |
| 67 | {SkPaint::kStroke_Style, SkIntToScalar(kSize) / 2}, |
| 68 | }; |
| 69 | for (size_t s = 0; s < SK_ARRAY_COUNT(kStrokes); ++s) { |
| 70 | for (size_t m = 0; m <= SkXfermode::kLastMode; ++m) { |
| 71 | SkXfermode::Mode mode = static_cast<SkXfermode::Mode>(m); |
| 72 | canvas->drawText(SkXfermode::ModeName(mode), |
| 73 | strlen(SkXfermode::ModeName(mode)), |
| 74 | SkIntToScalar(x), |
| 75 | SkIntToScalar(y + kSize + 3) + labelP.getTextSize(), |
| 76 | labelP); |
| 77 | for (size_t c = 0; c < SK_ARRAY_COUNT(kSolidColors); ++c) { |
| 78 | SkPaint modePaint; |
| 79 | modePaint.setXfermodeMode(mode); |
| 80 | modePaint.setColor(kSolidColors[c]); |
| 81 | modePaint.setStyle(kStrokes[s].fStyle); |
| 82 | modePaint.setStrokeWidth(kStrokes[s].fWidth); |
commit-bot@chromium.org | 103f2d0 | 2013-08-08 21:13:38 +0000 | [diff] [blame] | 83 | |
commit-bot@chromium.org | de1559c | 2013-08-14 19:20:45 +0000 | [diff] [blame] | 84 | this->drawMode(canvas, x, y, kSize, kSize, modePaint, tempCanvas.get()); |
commit-bot@chromium.org | 103f2d0 | 2013-08-08 21:13:38 +0000 | [diff] [blame] | 85 | |
commit-bot@chromium.org | de1559c | 2013-08-14 19:20:45 +0000 | [diff] [blame] | 86 | ++test; |
| 87 | x += kSize + 10; |
| 88 | if (!(test % kTestsPerRow)) { |
| 89 | x = 0; |
| 90 | y += kSize + 30; |
| 91 | } |
commit-bot@chromium.org | 103f2d0 | 2013-08-08 21:13:38 +0000 | [diff] [blame] | 92 | } |
commit-bot@chromium.org | de1559c | 2013-08-14 19:20:45 +0000 | [diff] [blame] | 93 | for (size_t a = 0; a < SK_ARRAY_COUNT(kBmpAlphas); ++a) { |
| 94 | SkPaint modePaint; |
| 95 | modePaint.setXfermodeMode(mode); |
| 96 | modePaint.setAlpha(kBmpAlphas[a]); |
| 97 | modePaint.setShader(fBmpShader); |
| 98 | modePaint.setStyle(kStrokes[s].fStyle); |
| 99 | modePaint.setStrokeWidth(kStrokes[s].fWidth); |
commit-bot@chromium.org | 103f2d0 | 2013-08-08 21:13:38 +0000 | [diff] [blame] | 100 | |
commit-bot@chromium.org | de1559c | 2013-08-14 19:20:45 +0000 | [diff] [blame] | 101 | this->drawMode(canvas, x, y, kSize, kSize, modePaint, tempCanvas.get()); |
commit-bot@chromium.org | 103f2d0 | 2013-08-08 21:13:38 +0000 | [diff] [blame] | 102 | |
commit-bot@chromium.org | de1559c | 2013-08-14 19:20:45 +0000 | [diff] [blame] | 103 | ++test; |
| 104 | x += kSize + 10; |
| 105 | if (!(test % kTestsPerRow)) { |
| 106 | x = 0; |
| 107 | y += kSize + 30; |
| 108 | } |
commit-bot@chromium.org | 103f2d0 | 2013-08-08 21:13:38 +0000 | [diff] [blame] | 109 | } |
| 110 | } |
| 111 | } |
| 112 | } |
| 113 | |
| 114 | private: |
| 115 | /** |
| 116 | * GrContext has optimizations around full rendertarget draws that can be replaced with clears. |
| 117 | * We are trying to test those. We could use saveLayer() to create small SkGpuDevices but |
| 118 | * saveLayer() uses the texture cache. This means that the actual render target may be larger |
| 119 | * than the layer. Because the clip will contain the layer's bounds, no draws will be full-RT. |
| 120 | * So when running on a GPU canvas we explicitly create a temporary canvas using a texture with |
| 121 | * dimensions exactly matching the layer size. |
| 122 | */ |
| 123 | SkCanvas* possiblyCreateTempCanvas(SkCanvas* baseCanvas, int w, int h) { |
| 124 | SkCanvas* tempCanvas = NULL; |
| 125 | #if SK_SUPPORT_GPU |
| 126 | GrRenderTarget* rt = baseCanvas->getDevice()->accessRenderTarget(); |
| 127 | if (NULL != rt) { |
| 128 | GrContext* context = rt->getContext(); |
| 129 | GrTextureDesc desc; |
| 130 | desc.fWidth = w; |
| 131 | desc.fHeight = h; |
| 132 | desc.fConfig = rt->config(); |
| 133 | desc.fFlags = kRenderTarget_GrTextureFlagBit; |
| 134 | SkAutoTUnref<GrSurface> surface(context->createUncachedTexture(desc, NULL, 0)); |
robertphillips@google.com | 9b051a3 | 2013-08-20 20:06:40 +0000 | [diff] [blame] | 135 | SkAutoTUnref<SkDevice> device(SkGpuDevice::Create(surface.get())); |
commit-bot@chromium.org | 103f2d0 | 2013-08-08 21:13:38 +0000 | [diff] [blame] | 136 | if (NULL != device.get()) { |
| 137 | tempCanvas = SkNEW_ARGS(SkCanvas, (device.get())); |
| 138 | } |
| 139 | } |
| 140 | #endif |
| 141 | return tempCanvas; |
| 142 | } |
| 143 | |
| 144 | void drawMode(SkCanvas* canvas, |
| 145 | int x, int y, int w, int h, |
| 146 | const SkPaint& modePaint, SkCanvas* layerCanvas) { |
| 147 | canvas->save(); |
| 148 | |
| 149 | canvas->translate(SkIntToScalar(x), SkIntToScalar(y)); |
| 150 | |
| 151 | SkRect r = SkRect::MakeWH(SkIntToScalar(w), SkIntToScalar(h)); |
| 152 | |
| 153 | SkCanvas* modeCanvas; |
| 154 | if (NULL == layerCanvas) { |
| 155 | canvas->saveLayer(&r, NULL, SkCanvas::kARGB_ClipLayer_SaveFlag); |
| 156 | modeCanvas = canvas; |
| 157 | } else { |
| 158 | modeCanvas = layerCanvas; |
| 159 | } |
| 160 | |
| 161 | SkPaint bgPaint; |
| 162 | bgPaint.setAntiAlias(false); |
| 163 | bgPaint.setShader(fBGShader); |
| 164 | modeCanvas->drawRect(r, bgPaint); |
| 165 | modeCanvas->drawRect(r, modePaint); |
| 166 | modeCanvas = NULL; |
| 167 | |
| 168 | if (NULL == layerCanvas) { |
| 169 | canvas->restore(); |
| 170 | } else { |
| 171 | SkBitmap bitmap = layerCanvas->getDevice()->accessBitmap(false); |
| 172 | canvas->drawBitmap(bitmap, 0, 0); |
| 173 | } |
| 174 | |
| 175 | r.inset(-SK_ScalarHalf, -SK_ScalarHalf); |
| 176 | SkPaint borderPaint; |
| 177 | borderPaint.setStyle(SkPaint::kStroke_Style); |
| 178 | canvas->drawRect(r, borderPaint); |
| 179 | |
| 180 | canvas->restore(); |
| 181 | } |
| 182 | |
| 183 | virtual void onOnceBeforeDraw() SK_OVERRIDE { |
| 184 | static const uint32_t kCheckData[] = { |
| 185 | SkPackARGB32(0xFF, 0x40, 0x40, 0x40), |
| 186 | SkPackARGB32(0xFF, 0xD0, 0xD0, 0xD0), |
| 187 | SkPackARGB32(0xFF, 0xD0, 0xD0, 0xD0), |
| 188 | SkPackARGB32(0xFF, 0x40, 0x40, 0x40) |
| 189 | }; |
| 190 | SkBitmap bg; |
| 191 | bg.setConfig(SkBitmap::kARGB_8888_Config, 2, 2); |
| 192 | bg.allocPixels(); |
| 193 | SkAutoLockPixels bgAlp(bg); |
| 194 | memcpy(bg.getPixels(), kCheckData, sizeof(kCheckData)); |
| 195 | bg.setIsOpaque(true); |
| 196 | |
| 197 | fBGShader.reset(SkShader::CreateBitmapShader(bg, |
| 198 | SkShader::kRepeat_TileMode, |
| 199 | SkShader::kRepeat_TileMode)); |
| 200 | SkMatrix lm; |
| 201 | lm.setScale(SkIntToScalar(kCheckSize), SkIntToScalar(kCheckSize)); |
| 202 | fBGShader->setLocalMatrix(lm); |
| 203 | |
| 204 | SkPaint bmpPaint; |
| 205 | static const SkPoint kCenter = { SkIntToScalar(kSize) / 2, SkIntToScalar(kSize) / 2 }; |
| 206 | static const SkColor kColors[] = { SK_ColorTRANSPARENT, 0x80800000, |
| 207 | 0xF020F060, SK_ColorWHITE }; |
| 208 | bmpPaint.setShader(SkGradientShader::CreateRadial(kCenter, |
| 209 | 3 * SkIntToScalar(kSize) / 4, |
| 210 | kColors, |
| 211 | NULL, |
| 212 | SK_ARRAY_COUNT(kColors), |
| 213 | SkShader::kRepeat_TileMode))->unref(); |
| 214 | |
| 215 | SkBitmap bmp; |
| 216 | bmp.setConfig(SkBitmap::kARGB_8888_Config, kSize, kSize); |
| 217 | bmp.allocPixels(); |
| 218 | SkCanvas bmpCanvas(bmp); |
| 219 | |
| 220 | bmpCanvas.clear(SK_ColorTRANSPARENT); |
| 221 | SkRect rect = { SkIntToScalar(kSize) / 8, SkIntToScalar(kSize) / 8, |
| 222 | 7 * SkIntToScalar(kSize) / 8, 7 * SkIntToScalar(kSize) / 8}; |
| 223 | bmpCanvas.drawRect(rect, bmpPaint); |
| 224 | |
| 225 | fBmpShader.reset(SkShader::CreateBitmapShader(bmp, |
| 226 | SkShader::kClamp_TileMode, |
| 227 | SkShader::kClamp_TileMode)); |
| 228 | } |
| 229 | |
| 230 | enum { |
| 231 | kCheckSize = 8, |
| 232 | kSize = 30, |
| 233 | kTestsPerRow = 15, |
| 234 | }; |
| 235 | |
| 236 | SkAutoTUnref<SkShader> fBGShader; |
| 237 | SkAutoTUnref<SkShader> fBmpShader; |
| 238 | |
| 239 | typedef GM INHERITED; |
| 240 | }; |
| 241 | |
| 242 | ////////////////////////////////////////////////////////////////////////////// |
| 243 | |
| 244 | DEF_GM(return new Xfermodes3GM;) |
| 245 | |
| 246 | } |