feTurbulence-negative-basefreq.html

<!DOCTYPE html>
<svg width="400" height="100" color-interpolation-filters="sRGB">
    <!-- type=fractalNoise -->
    <filter id="fn1" x="0" y="0" width="1" height="1">
        <feTurbulence type="fractalNoise" baseFrequency="-1 1"/>
        <feComponentTransfer>
            <feFuncR type="discrete" tableValues="1 0 1"/>
            <feFuncG type="discrete" tableValues="0 0.502 0"/> <!-- map [0..1/3] -> 0; [1/3...2/3] -> 0.502; [2/3..1] -> 0 -->
            <feFuncB type="discrete" tableValues="0"/>
            <feFuncA type="discrete" tableValues="0 1 0"/>
        </feComponentTransfer>
    </filter>
    <rect width="100" height="100" filter="url(#fn1)"/>

    <filter id="fn2" x="0" y="0" width="1" height="1">
        <feTurbulence type="fractalNoise" baseFrequency="1 -1"/>
        <feComponentTransfer>
            <feFuncR type="discrete" tableValues="1 0 1"/>
            <feFuncG type="discrete" tableValues="0 0.502 0"/> <!-- map [0..1/3] -> 0; [1/3...2/3] -> 0.502; [2/3..1] -> 0 -->
            <feFuncB type="discrete" tableValues="0"/>
            <feFuncA type="discrete" tableValues="0 1 0"/>
        </feComponentTransfer>
    </filter>
    <rect width="100" height="100" filter="url(#fn2)" x="100"/>

    <!-- type=turbulence -->
    <filter id="tb1" x="0" y="0" width="1" height="1">
        <feTurbulence type="turbulence" baseFrequency="-1 1"/>
        <feColorMatrix values="1 0 0 0 0, 0 1 0 0 0.502, 0 0 1 0 0, 0 0 0 1 1"/>
    </filter>
    <rect width="100" height="100" filter="url(#tb1)" x="200"/>

    <filter id="tb2" x="0" y="0" width="1" height="1">
        <feTurbulence type="turbulence" baseFrequency="1 -1"/>
        <feColorMatrix values="1 0 0 0 0, 0 1 0 0 0.502, 0 0 1 0 0, 0 0 0 1 1"/>
    </filter>
    <rect width="100" height="100" filter="url(#tb2)" x="300"/>
</svg>
chromium/third_party/blink/web_tests/svg/filters/feTurbulence-negative-basefreq.html
