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.

xxxxxxxxxx
 
void draw(SkCanvas* canvas) {
    SkBitmap redBorder;
    redBorder.allocPixels(SkImageInfo::MakeN32Premul(4, 4));
    SkCanvas checkRed(redBorder);
    checkRed.clear(SK_ColorRED);
    uint32_t checkers[][2] = { { SK_ColorBLACK, SK_ColorWHITE },
                               { SK_ColorWHITE, SK_ColorBLACK } };
    checkRed.writePixels(
            SkImageInfo::MakeN32Premul(2, 2), (void*) checkers, sizeof(checkers[0]), 1, 1);
    canvas->scale(16, 16);
    canvas->drawImage(redBorder.asImage(), 0, 0);
    canvas->resetMatrix();
    sk_sp<SkImage> image = redBorder.asImage();
    for (auto constraint : { SkCanvas::kStrict_SrcRectConstraint,
                             SkCanvas::kFast_SrcRectConstraint } ) {
        canvas->translate(80, 0);
        canvas->drawImageRect(image.get(), SkRect::MakeLTRB(1, 1, 3, 3),
                SkRect::MakeLTRB(16, 16, 48, 48),
                SkSamplingOptions(SkFilterMode::kLinear), nullptr, constraint);
    }
}