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 REG_FIDDLE(Image_MakeBackendTextureFromImage, 256, 64, false, 0) { create_gpu_image(GrRecordingContext * rContext)5 static sk_sp<SkImage> create_gpu_image(GrRecordingContext * rContext) { 6 const SkImageInfo info = SkImageInfo::MakeN32(20, 20, kOpaque_SkAlphaType); 7 auto surface(SkSurfaces::RenderTarget(rContext, skgpu::Budgeted::kNo, info)); 8 SkCanvas* canvas = surface->getCanvas(); 9 canvas->clear(SK_ColorWHITE); 10 SkPaint paint; 11 paint.setColor(SK_ColorBLACK); 12 canvas->drawRect(SkRect::MakeXYWH(5, 5, 10, 10), paint); 13 return surface->makeImageSnapshot(); 14 } 15 draw(SkCanvas * canvas)16 void draw(SkCanvas * canvas) { 17 auto dContext = GrAsDirectContext(canvas->recordingContext()); 18 if (!dContext) { 19 return; 20 } 21 sk_sp<SkImage> backEndImage = create_gpu_image(dContext); 22 canvas->drawImage(backEndImage, 0, 0); 23 GrBackendTexture texture; 24 SkImages::BackendTextureReleaseProc proc; 25 if (!SkImages::MakeBackendTextureFromImage( 26 dContext, std::move(backEndImage), &texture, &proc)) { 27 return; 28 } 29 sk_sp<SkImage> i2 = SkImages::BorrowTextureFrom(dContext, 30 texture, 31 kTopLeft_GrSurfaceOrigin, 32 kN32_SkColorType, 33 kOpaque_SkAlphaType, 34 nullptr); 35 canvas->drawImage(i2, 30, 30); 36 } 37 } // END FIDDLE 38