| Hal Canary | 9d9312b | 2020-01-16 12:45:33 -0500 | [diff] [blame] | 1 | // Copyright 2020 Google LLC. |
| 2 | // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file. |
| 3 | #include "tools/fiddle/examples.h" |
| 4 | REG_FIDDLE_SRGB(gpu4444diff, 260, 260, false, 3, 0, false) { |
| 5 | void draw(SkCanvas* canvas) { |
| 6 | canvas->scale(16, 16); |
| 7 | SkBitmap bitmap; |
| 8 | SkImageInfo imageInfo = SkImageInfo::Make(2, 2, kARGB_4444_SkColorType, kPremul_SkAlphaType); |
| 9 | bitmap.allocPixels(imageInfo); |
| 10 | SkCanvas offscreen(bitmap); |
| 11 | offscreen.clear(SK_ColorGREEN); |
| 12 | canvas->drawBitmap(bitmap, 0, 0); |
| 13 | offscreen.clear(SK_ColorGRAY); |
| 14 | canvas->drawBitmap(bitmap, 2, 2); |
| 15 | auto pack4444 = [](unsigned a, unsigned r, unsigned g, unsigned b) -> uint16_t { |
| 16 | return (a << 0) | (b << 4) | (g << 8) | (r << 12); |
| 17 | }; |
| 18 | uint16_t red4444[] = { pack4444(0xF, 0xF, 0x0, 0x0), pack4444(0xF, 0xb, 0x0, 0x0), |
| 19 | pack4444(0xF, 0x9, 0x0, 0x0), pack4444(0xF, 0x5, 0x0, 0x0) }; |
| 20 | uint16_t blue4444[] = { pack4444(0xF, 0x0, 0x0, 0x0F), pack4444(0xF, 0x0, 0x0, 0x0b), |
| 21 | pack4444(0xF, 0x0, 0x0, 0x09), pack4444(0xF, 0x0, 0x0, 0x05) }; |
| 22 | SkImageInfo pixInfo = SkImageInfo::Make(2, 2, kARGB_4444_SkColorType, kPremul_SkAlphaType); |
| 23 | SkPixmap redPixmap(imageInfo, &red4444, 4); |
| 24 | if (bitmap.writePixels(redPixmap, 0, 0)) { |
| 25 | canvas->drawBitmap(bitmap, 4, 4); |
| 26 | } |
| 27 | SkPixmap bluePixmap(imageInfo, &blue4444, 4); |
| 28 | if (bitmap.writePixels(bluePixmap, 0, 0)) { |
| 29 | canvas->drawBitmap(bitmap, 6, 6); |
| 30 | } |
| 31 | } |
| 32 | } // END FIDDLE |