Canvas_readPixels_b.cpp 659 B

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  1. // Copyright 2019 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. // HASH=481e990e923a0ed34654f4361b94f096
  5. REG_FIDDLE(Canvas_readPixels_b, 256, 256, true, 0) {
  6. void draw(SkCanvas* canvas) {
  7. canvas->clear(0x8055aaff);
  8. for (SkAlphaType alphaType : { kPremul_SkAlphaType, kUnpremul_SkAlphaType } ) {
  9. uint32_t pixel = 0;
  10. SkImageInfo info = SkImageInfo::Make(1, 1, kBGRA_8888_SkColorType, alphaType);
  11. if (canvas->readPixels(info, &pixel, 4, 0, 0)) {
  12. SkDebugf("pixel = %08x\n", pixel);
  13. }
  14. }
  15. }
  16. } // END FIDDLE