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:

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void draw(SkCanvas* canvas) {
    std::vector<int32_t> srcPixels;
    int width = image->width();
    int height = image->height();
    srcPixels.resize(height * width  * 4);
    SkPixmap pixmap(SkImageInfo::MakeN32Premul(width, height), (const void*) &srcPixels.front(),
                    width * 4);
    image->readPixels(nullptr, pixmap, 0, 0);
    canvas->scale(.5f, .5f);
    width /= 4;
    height /= 4;
    for (int y = 0; y < 4; ++y) {
        for (int x = 0; x < 4; ++x) {
            SkBitmap bitmap;
            bitmap.allocPixels(SkImageInfo::MakeN32Premul(width, height));
            bitmap.writePixels(pixmap, -y * width, -x * height);
            canvas->drawImage(bitmap.asImage(), x * width, y * height);
        }
    }
}