{
    "blend": {
        "func": "add",
        "srcrgb": "one",
        "dstrgb": "zero"
    },
    "vertex": "downscale",
    "fragment": "downscale",
    "attributes": [ "Position" ],
    "samplers": [
        { "name": "DiffuseSampler" }
    ],
    "uniforms": [
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        { "name": "InSize",     "type": "float",     "count": 2,  "values": [ 1.0, 1.0 ] },
        { "name": "OutSize",    "type": "float",     "count": 2,  "values": [ 1.0, 1.0 ] }
    ]
}