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=06aeb3cf63ffccf7b49fe556e5def351 5REG_FIDDLE(Image_MakeBackendTextureFromSkImage, 256, 64, false, 0) { 6static sk_sp<SkImage> create_gpu_image(GrRecordingContext* rContext) { 7 const SkImageInfo info = SkImageInfo::MakeN32(20, 20, kOpaque_SkAlphaType); 8 auto surface(SkSurface::MakeRenderTarget(rContext, SkBudgeted::kNo, info)); 9 SkCanvas* canvas = surface->getCanvas(); 10 canvas->clear(SK_ColorWHITE); 11 SkPaint paint; 12 paint.setColor(SK_ColorBLACK); 13 canvas->drawRect(SkRect::MakeXYWH(5, 5, 10, 10), paint); 14 return surface->makeImageSnapshot(); 15} 16 17void draw(SkCanvas* canvas) { 18 auto dContext = GrAsDirectContext(canvas->recordingContext()); 19 if (!dContext) { 20 return; 21 } 22 sk_sp<SkImage> backEndImage = create_gpu_image(dContext); 23 canvas->drawImage(backEndImage, 0, 0); 24 GrBackendTexture texture; 25 SkImage::BackendTextureReleaseProc proc; 26 if (!SkImage::MakeBackendTextureFromSkImage(dContext, std::move(backEndImage), 27 &texture, &proc)) { 28 return; 29 } 30 sk_sp<SkImage> i2 = SkImage::MakeFromTexture(dContext, texture, kTopLeft_GrSurfaceOrigin, 31 kN32_SkColorType, kOpaque_SkAlphaType, nullptr); 32 canvas->drawImage(i2, 30, 30); 33} 34} // END FIDDLE 35