framebuffer creation

    //out previously created imageViews are our attachments
    std::array<VkImageView, 2> attachments = { object_picking_colorImageView, object_picking_depthImageView };
    VkFramebufferCreateInfo framebuffer_info{};
    framebuffer_info.sType = VK_STRUCTURE_TYPE_FRAMEBUFFER_CREATE_INFO;
    framebuffer_info.renderPass = object_picking_pass;
    framebuffer_info.pAttachments = attachments.data();
    framebuffer_info.attachmentCount = static_cast<uint32_t>(attachments.size());
    framebuffer_info.width = swapChainExtent.width;
    framebuffer_info.height = swapChainExtent.height;
    framebuffer_info.layers = 1;
    if (vkCreateFramebuffer(device, &framebuffer_info, nullptr, &object_picking_fb) != VK_SUCCESS) {
        throw std::runtime_error("failed to create framebuffer!");
    }