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.
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void draw(SkCanvas* canvas) {
    std::vector<int32_t> srcPixels;
    srcPixels.resize(source.height() * source.rowBytes());
    SkPixmap pixmap(SkImageInfo::MakeN32Premul(source.width(), source.height()),
                    &srcPixels.front(), source.rowBytes());
    source.readPixels(pixmap, 0, 0);
    for (int y = 0; y < source.height(); ++y) {
        for (int x = 0; x < source.width(); ++x) {
            SkPMColor pixel = srcPixels[y * source.width() + x];
            const SkColor color = SkUnPreMultiply::PMColorToColor(pixel);
            if (SkColorGetA(color) == SK_AlphaOPAQUE) {
                srcPixels[y * source.width() + x] = SK_ColorGREEN;
            }
        }
    }
    canvas->drawImage(SkImages::RasterFromPixmapCopy(pixmap), 0, 0);
}