05 Creating a uniform texel buffer.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: 05 Descriptor Sets
// Recipe:  05 Creating a uniform texel buffer

#include "04 Resources and Memory/01 Creating a buffer.h"
#include "04 Resources and Memory/02 Allocating and binding memory object to a buffer.h"
#include "04 Resources and Memory/04 Creating a buffer view.h"
#include "05 Descriptor Sets/05 Creating a uniform texel buffer.h"

namespace VulkanCookbook {

  bool CreateUniformTexelBuffer( VkPhysicalDevice     physical_device,
                                 VkDevice             logical_device,
                                 VkFormat             format,
                                 VkDeviceSize         size,
                                 VkImageUsageFlags    usage,
                                 VkBuffer           & uniform_texel_buffer,
                                 VkDeviceMemory     & memory_object,
                                 VkBufferView       & uniform_texel_buffer_view ) {
    VkFormatProperties format_properties;
    vkGetPhysicalDeviceFormatProperties( physical_device, format, &format_properties );
    if( !(format_properties.bufferFeatures & VK_FORMAT_FEATURE_UNIFORM_TEXEL_BUFFER_BIT) ) {
      std::cout << "Provided format is not supported for a uniform texel buffer." << std::endl;
      return false;
    }

    if( !CreateBuffer( logical_device, size, usage | VK_BUFFER_USAGE_UNIFORM_TEXEL_BUFFER_BIT, uniform_texel_buffer ) ) {
      return false;
    }

    if( !AllocateAndBindMemoryObjectToBuffer( physical_device, logical_device, uniform_texel_buffer, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT, memory_object ) ) {
      return false;
    }

    if( !CreateBufferView( logical_device, uniform_texel_buffer, format, 0, VK_WHOLE_SIZE, uniform_texel_buffer_view ) ) {
      return false;
    }
    return true;
  }

} // namespace VulkanCookbook