aosp12/external/skia/docs/examples/draw_pixel_array_nocopy.cpp

23 lines
896 B
C++

// Copyright 2020 Google LLC.
// Use of this source code is governed by a BSD-style license that can be found in the LICENSE file.
#include "tools/fiddle/examples.h"
REG_FIDDLE(draw_pixel_array_nocopy, 256, 256, false, 5) {
constexpr int kWidth = 4;
constexpr int kHeight = 4;
static const uint32_t kPixels[kHeight * kWidth] = {
0xFF000000, 0xFF005500, 0xFF00AA00, 0xFF00FF00,
0xFF000055, 0xFF005555, 0xFF00AA55, 0xFF00FF55,
0xFF0000AA, 0xFF0055AA, 0xFF00AAAA, 0xFF00FFAA,
0xFF0000FF, 0xFF0055FF, 0xFF00AAFF, 0xFF00FFFF,
};
void draw(SkCanvas* canvas) {
SkPixmap pixmap(SkImageInfo::Make(kWidth, kHeight, kN32_SkColorType, kPremul_SkAlphaType),
kPixels, sizeof(uint32_t) * kWidth);
sk_sp<SkImage> img = SkImage::MakeFromRaster(pixmap, nullptr, nullptr);
canvas->scale(16, 16);
canvas->drawImage(img, 6, 6);
}
} // END FIDDLE