Skia Fiddle

Options

Width Height

check_box_outline_blank check_box Text Only [Use SkDebugf()]

check_box_outline_blank check_box sRGB

check_box_outline_blank check_box F16

check_box_outline_blank check_box Animation

check_box_outline_blank check_box Offscreen Render Target

Width Height Sample Count

check_box_outline_blank check_box Texturable

check_box_outline_blank check_box MipMap

This global is now defined:

GrBackendRenderTarget backEndRenderTarget;

GrBackendTexture backEndTextureRenderTarget;

Optional source image

check_box_outline_blank check_box MipMap

These globals are now defined:

SkBitmap source;
sk_sp<SkImage> image;
GrBackendTexture backEndTexture; // GPU Only.

Note:

Adding comments with SK_FOLD_START and SK_FOLD_END creates foldable code blocks.
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void draw(SkCanvas* canvas) {
    canvas->scale(.5f, .5f);
    const int width = 32;
    const int height = 32;
    std::vector<int32_t> dstPixels;
    dstPixels.resize(height * width * 4);
    SkImageInfo info = SkImageInfo::MakeN32Premul(width, height);
    for (int y = 0; y < 512; y += height ) {
        for (int x = 0; x < 512; x += width ) {
            if (image->readPixels(nullptr, info, &dstPixels.front(), width * 4, x, y)) {
                SkPixmap dstPixmap(info, &dstPixels.front(), width * 4);
                SkBitmap bitmap;
                bitmap.installPixels(dstPixmap);
                canvas->drawImage(bitmap.asImage(), 0, 0);
            }
            canvas->translate(48, 0);
        }
        canvas->translate(-16 * 48, 48);
    }
}