Method setupTextureImage

examples/vulkan/Vulkan.cpp:1786–2076

Create an image for our texture data

    // Create an image for our texture data
    void setupTextureImage()
    {
        // Load the image data
        sf::Image imageData;
        if (!imageData.loadFromFile("resources/logo.png"))
        {
            vulkanAvailable = false;
            return;
        }

        // Create a staging buffer to transfer the data with
        const VkDeviceSize imageSize = imageData.getSize().x * imageData.getSize().y * 4;

        VkBuffer       stagingBuffer       = {};
        VkDeviceMemory stagingBufferMemory = {};
        createBuffer(imageSize,
                     VK_BUFFER_USAGE_TRANSFER_SRC_BIT,
                     VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT,
                     stagingBuffer,
                     stagingBufferMemory);

        void* ptr = nullptr;

        // Map the buffer into our address space
        if (vkMapMemory(device, stagingBufferMemory, 0, imageSize, 0, &ptr) != VK_SUCCESS)
        {
            vkFreeMemory(device, stagingBufferMemory, nullptr);
            vkDestroyBuffer(device, stagingBuffer, nullptr);

            vulkanAvailable = false;
            return;
        }

        // Copy the image data into the buffer
        std::memcpy(ptr, imageData.getPixelsPtr(), static_cast<std::size_t>(imageSize));

        // Unmap the buffer
        vkUnmapMemory(device, stagingBufferMemory);

        // Create a GPU local image
        if (!createImage(imageData.getSize().x,
                         imageData.getSize().y,
                         VK_FORMAT_R8G8B8A8_UNORM,
                         VK_IMAGE_TILING_OPTIMAL,
                         VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT,
                         VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT,
                         textureImage,
                         textureImageMemory))
        {
            vkFreeMemory(device, stagingBufferMemory, nullptr);
            vkDestroyBuffer(device, stagingBuffer, nullptr);

            vulkanAvailable = false;
            return;
        }

        // Create a command buffer
        VkCommandBufferAllocateInfo commandBufferAllocateInfo = VkCommandBufferAllocateInfo();