How to round selector?

Question

Android

I made such a multigradient
. How can I put it in a shape? I want to make a circle filled with this gradient

<selector
    xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <layer-list>
            <item>
                <shape android:shape="rectangle">
                    <gradient
                        android:angle="0"
                        android:startColor="#CA3939"
                        android:endColor="#CA3939"
                        android:type="linear" />
                </shape>
            </item>

            <item>
                <shape android:shape="rectangle">
                    <gradient
                        android:angle="135"
                        android:centerX="20%"
                        android:startColor="#00FFFFFF"
                        android:centerColor="#00FFFFFF"
                        android:endColor="#FF9076FF"
                        android:type="linear" />
                </shape>
            </item>
            <item>
                <shape android:shape="rectangle">
                    <gradient
                        android:angle="45"

                        android:startColor="#00FFFFFF"
                        android:centerColor="#00FFFFFF"
                        android:endColor="#FFFFDA7C"
                        android:type="linear" />
                </shape>
            </item>
            <item>
                <shape android:shape="rectangle">
                    <gradient
                        android:angle="315"
                        android:centerX="20%"
                        android:startColor="#00FFFFFF"
                        android:centerColor="#00FFFFFF"
                        android:endColor="#FF46CE6C"
                        android:type="linear" />
                </shape>
            </item>
        </layer-list>
    </item>
</selector>