xref: /aosp_15_r20/external/skia/docs/examples/Image_BorrowTextureFrom_2.cpp (revision c8dee2aa9b3f27cf6c858bd81872bdeb2c07ed17)
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_BorrowTextureFrom_2, 256, 256, false, 4) {
draw(SkCanvas * canvas)5 void draw(SkCanvas* canvas) {
6     auto dContext = GrAsDirectContext(canvas->recordingContext());
7     if (!dContext) {
8        return;
9     }
10 
11     auto releaseCallback = [](SkImages::ReleaseContext releaseContext) -> void {
12         *((int*)releaseContext) += 128;
13     };
14     int x = 0, y = 0;
15     for (auto origin : { kBottomLeft_GrSurfaceOrigin, kTopLeft_GrSurfaceOrigin } ) {
16         sk_sp<SkImage> image = SkImages::BorrowTextureFrom(dContext,
17                                                            backEndTexture,
18                                                            origin,
19                                                            kRGBA_8888_SkColorType,
20                                                            kOpaque_SkAlphaType,
21                                                            nullptr,
22                                                            releaseCallback,
23                                                            &x);
24         canvas->drawImage(image, x, y);
25         y += 128;
26     }
27 }
28 }  // END FIDDLE
29