submodule/skia/docs/examples/Surface_MakeRenderTarget.cpp

   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=67b6609471a3f1ed0f4b1657004cdecb
   5 REG_FIDDLE(Surface_MakeRenderTarget, 256, 64, false, 0) {
   6 void draw(SkCanvas* canvas) {
   7     SkFont font(nullptr, 32);
   8     SkPaint paint;
   9
  10     auto dContext = GrAsDirectContext(canvas->recordingContext());
  11     if (!dContext) {
  12         return;
  13     }
  14
  15     SkImageInfo info = SkImageInfo::MakeN32(256, 64, kOpaque_SkAlphaType);
  16     for (auto surfaceOrigin : { kTopLeft_GrSurfaceOrigin, kBottomLeft_GrSurfaceOrigin } ) {
  17         auto gpuSurface(SkSurface::MakeRenderTarget(dContext, SkBudgeted::kNo, info, 0,
  18                                                     surfaceOrigin, nullptr));
  19         auto surfaceCanvas = gpuSurface->getCanvas();
  20         surfaceCanvas->clear(SK_ColorWHITE);
  21         surfaceCanvas->drawString("GPU rocks!", 20, 40, font, paint);
  22         sk_sp<SkImage> image(gpuSurface->makeImageSnapshot());
  23         canvas->drawImage(image, 0, 0);
  24         canvas->translate(0, 128);
  25     }
  26 }
  27 }  // END FIDDLE