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.
These blocks will be folded by default and are useful for highlighting specific lines of code.
You can also use the keyboard shortcuts Ctrl+S and Ctrl+E in the code editor to set them.

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void draw(SkCanvas* canvas) {
    const int iterations = 26;
    SkRSXform transforms[iterations];
    char alphabet[iterations];
    SkScalar angle = 0;
    SkScalar scale = 1;
    for (size_t i = 0; i < std::size(transforms); ++i) {
        const SkScalar s = SkScalarSin(angle) * scale;
        const SkScalar c = SkScalarCos(angle) * scale;
        transforms[i] = SkRSXform::Make(-c, -s, -s * 16, c * 16);
        angle += .45f;
        scale += .2f;
        alphabet[i] = 'A' + i;
    }
    SkPaint paint;
    SkFont font(fontMgr->matchFamilyStyle(nullptr, {}), 20);
    auto spiral = SkTextBlob::MakeFromRSXform(alphabet, sizeof(alphabet), transforms, font);
    canvas->drawTextBlob(spiral, 110, 138, paint);
}