readBoolOutputs(sizePower) {
        let pixels = this._renderReadDealloc(WglTexturePool.takeBoolTex(sizePower));
        let result = new Uint8Array(pixels.length >> 2);
        for (let i = 0; i < result.length; i++) {
            result[i] = pixels[i << 2] & 1;
        }
        return result;
    }
@param {!int} sizePower
@returns {!Uint8Array} Each entry represents one of the booleans: 1 for true, 0 for false.