resources/sksl/spirv/InterfaceBlockPushConstant.sksl

layout(push_constant, binding=456) uniform testBlock {
    layout(offset=16) half2x2 m1;
    layout(offset=32) half2x2 m2;
};

void main() {
    sk_FragColor = half4(m1[0][0], m1[1][1], m2[0][0], m2[1][1]);
}