vulkan_material_resources.cpp

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#include "vulkan_material_resources.hpp"
#include "vulkan_renderer.hpp"
#include "material.hpp"
#include "utility.hpp"
 
namespace rendering_engine
{
 
VulkanMaterialResources::VulkanMaterialResources(VulkanRenderer* renderer)
    :
    mRenderer(renderer)
{}
 
void VulkanMaterialResources::Initialize(Material * material)
{
    Shutdown(); 
 
    mDescriptorSetLayout = mRenderer->CreateDescriptorSetLayout(material);
    
    std::string matName;
    if (material->GetMaterialSettings().parentMaterialName.empty())
    {
        matName = material->GetMaterialSettings().materialName;
    }
    else
    {
        matName = material->GetMaterialSettings().parentMaterialName;
    }
 
    std::vector<char> spvVert;
    std::vector<char> spvFrag;
 
    if (Utility::IsPackageProvided())
    {
        std::string materialEntry = "Shaders/" + matName;
 
        std::vector<uint8_t> binaryFileDataVert = Utility::ReadPackedFile(materialEntry + "/" + std::string(matName + "_vert.spv"));
        std::vector<uint8_t> binaryFileDataFrag = Utility::ReadPackedFile(materialEntry + "/" + std::string(matName + "_frag.spv"));
 
        spvVert.assign(binaryFileDataVert.begin(), binaryFileDataVert.end());
        spvFrag.assign(binaryFileDataFrag.begin(), binaryFileDataFrag.end());
    }
    else
    {
        std::filesystem::path matPath = Utility::GetShadersFolderPath() / matName;
    
        spvVert = Utility::ReadShaderBinaryFile((matPath / std::string(matName + "_vert.spv")).string());
        spvFrag = Utility::ReadShaderBinaryFile((matPath / std::string(matName + "_frag.spv")).string());
    }
 
    mPipelinePair = mRenderer->CreateGraphicsPipeline(material, mDescriptorSetLayout, spvVert, spvFrag);
}
 
void VulkanMaterialResources::Shutdown()
{
    if (!mRenderer)
        return;
 
    VkDevice device = mRenderer->GetLogicalDevice(); // or GetDevice()
 
    // Pipeline first
    if (mPipelinePair.second != VK_NULL_HANDLE)
    {
        vkDestroyPipeline(device, mPipelinePair.second, nullptr);
        mPipelinePair.second = VK_NULL_HANDLE;
    }
 
    // Then pipeline layout
    if (mPipelinePair.first != VK_NULL_HANDLE)
    {
        vkDestroyPipelineLayout(device, mPipelinePair.first, nullptr);
        mPipelinePair.first = VK_NULL_HANDLE;
    }
 
    // Then descriptor set layout
    if (mDescriptorSetLayout != VK_NULL_HANDLE)
    {
        vkDestroyDescriptorSetLayout(device, mDescriptorSetLayout, nullptr);
        mDescriptorSetLayout = VK_NULL_HANDLE;
    }
}
 
VkDescriptorSetLayout VulkanMaterialResources::GetDescriptorSetLayout() const
{
    return mDescriptorSetLayout;
}
 
VkPipelineLayout VulkanMaterialResources::GetPipelineLayout() const
{
    return mPipelinePair.first;
}
 
VkPipeline VulkanMaterialResources::GetPipeline() const
{
    return mPipelinePair.second;
}
 
} // namespace rendering_engine