02 Specifying subpass descriptions.cpp

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// Vulkan Cookbook
// ISBN: 9781786468154
// © Packt Publishing Limited
//
// Author:   Pawel Lapinski
// LinkedIn: https://www.linkedin.com/in/pawel-lapinski-84522329
//
// Chapter: 06 Render Passes and Framebuffers
// Recipe:  02 Specifying subpass descriptions

#include "06 Render Passes and Framebuffers/02 Specifying subpass descriptions.h"

namespace VulkanCookbook {

  void SpecifySubpassDescriptions( std::vector<SubpassParameters> const & subpass_parameters,
                                   std::vector<VkSubpassDescription>    & subpass_descriptions ) {
    subpass_descriptions.clear();

    for( auto & subpass_description : subpass_parameters ) {
      subpass_descriptions.push_back( {
        0,                                                                      // VkSubpassDescriptionFlags        flags
        subpass_description.PipelineType,                                       // VkPipelineBindPoint              pipelineBindPoint
        static_cast<uint32_t>(subpass_description.InputAttachments.size()),     // uint32_t                         inputAttachmentCount
        subpass_description.InputAttachments.data(),                            // const VkAttachmentReference    * pInputAttachments
        static_cast<uint32_t>(subpass_description.ColorAttachments.size()),     // uint32_t                         colorAttachmentCount
        subpass_description.ColorAttachments.data(),                            // const VkAttachmentReference    * pColorAttachments
        subpass_description.ResolveAttachments.data(),                          // const VkAttachmentReference    * pResolveAttachments
        subpass_description.DepthStencilAttachment,                             // const VkAttachmentReference    * pDepthStencilAttachment
        static_cast<uint32_t>(subpass_description.PreserveAttachments.size()),  // uint32_t                         preserveAttachmentCount
        subpass_description.PreserveAttachments.data()                          // const uint32_t                 * pPreserveAttachments
      } );
    }
  }

} // namespace VulkanCookbook