submodule/skia/docs/examples/Surface_draw_2.cpp

   1 #if 0  // Disabled until updated to use current API.
   2 // Copyright 2019 Google LLC.
   3 // Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
   4 #include "tools/fiddle/examples.h"
   5 // HASH=46d9bacf593deaaeabd74ff42f2571a0
   6 REG_FIDDLE(Surface_draw_2, 256, 64, false, 0) {
   7 void draw(SkCanvas* canvas) {
   8     SkPaint paint;
   9     paint.setTextSize(16);
  10     sk_sp<SkSurface> gpuSurface = SkSurface::MakeRasterN32Premul(64, 64);
  11     SkSurfaceCharacterization characterization;
  12     if (!gpuSurface->characterize(&characterization)) {
  13          canvas->drawString("characterization unsupported", 20, 40, paint);
  14          return;
  15     }
  16     // start of threadable work
  17     SkDeferredDisplayListRecorder recorder(characterization);
  18     SkCanvas* subCanvas = recorder.getCanvas();
  19     subCanvas->clear(SK_ColorGREEN);
  20     sk_sp<SkDeferredDisplayList> displayList = recorder.detach();
  21     // end of threadable work
  22     gpuSurface->draw(displayList);
  23     sk_sp<SkImage> img = gpuSurface->makeImageSnapshot();
  24     canvas->drawImage(std::move(img), 0, 0);
  25 }
  26 }  // END FIDDLE
  27 #endif  // Disabled until updated to use current API.