VulkanTexture.h

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/*
* Vulkan texture loader
*
* Copyright(C) by Sascha Willems - www.saschawillems.de
*
* This code is licensed under the MIT license(MIT) (http://opensource.org/licenses/MIT)
*/
 
#pragma once
 
#include <fstream>
#include <stdlib.h>
#include <string>
#include <vector>
 
#include "vulkan/vulkan.h"
 
#include <ktx.h>
#include <ktxvulkan.h>
 
#include "VulkanBuffer.h"
#include "VulkanTools.h"
#include "VkContext.h"
 
#if defined(__ANDROID__)
#   include <android/asset_manager.h>
#endif
 
namespace vks
{
class Texture
{
public:
    Texture();
 
    void      updateDescriptor();
    void      destroy();
    ktxResult loadKTXFile(std::string filename, ktxTexture **target);
 
    VkDescriptorImageInfo& descriptorInfo() { return descriptor; }
 
protected:
    dyno::VkContext*     ctx;
    VkImage               image;
    VkImageLayout         imageLayout;
    VkDeviceMemory        deviceMemory;
    VkImageView           view;
    uint32_t              width, height;
    uint32_t              mipLevels;
    uint32_t              layerCount;
    VkDescriptorImageInfo descriptor;
    VkSampler             sampler;
};
 
class Texture2D : public Texture
{
  public:
    void loadFromFile(
        std::string        filename,
        VkFormat           format,
        VkImageUsageFlags  imageUsageFlags = VK_IMAGE_USAGE_SAMPLED_BIT,
        VkImageLayout      imageLayout     = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL,
        bool               forceLinear     = false);
    void fromBuffer(
        void *             buffer,
        VkDeviceSize       bufferSize,
        VkFormat           format,
        uint32_t           texWidth,
        uint32_t           texHeight,
        VkFilter           filter          = VK_FILTER_LINEAR,
        VkImageUsageFlags  imageUsageFlags = VK_IMAGE_USAGE_SAMPLED_BIT,
        VkImageLayout      imageLayout     = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
};
 
class Texture2DArray : public Texture
{
  public:
    void loadFromFile(
        std::string        filename,
        VkFormat           format,
        VkImageUsageFlags  imageUsageFlags = VK_IMAGE_USAGE_SAMPLED_BIT,
        VkImageLayout      imageLayout     = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
};
 
class TextureCubeMap : public Texture
{
  public:
    void loadFromFile(
        std::string        filename,
        VkFormat           format,
        VkImageUsageFlags  imageUsageFlags = VK_IMAGE_USAGE_SAMPLED_BIT,
        VkImageLayout      imageLayout     = VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL);
};
}        // namespace vks