TextureLoader.cpp

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#include "Engine/Texture/TextureLoader.h"
 
#include <stb_image.h>
#include <vulkan/vulkan_core.h>
#include <iostream>
 
#include "Engine/Texture/TextureLoadData.h"
 
namespace EngineCore {
    std::unique_ptr<TextureLoadData> TextureLoader::loadImage(const std::filesystem::path &path) {
        int width, height, channels;
 
        // Load image with STBI_rgb_alpha to ensure 4 channels (RGBA)
        stbi_uc* pixels = stbi_load(
            std::filesystem::absolute(path).generic_string().c_str(),
            &width,
            &height,
            &channels,
            STBI_rgb_alpha // Force 4 channels
        );
 
        if (!pixels) {
            std::cerr << "Failed to load image at path: "
                      << std::filesystem::absolute(path).generic_string()
                      << std::endl;
            throw std::runtime_error("Failed to load texture image!");
        }
 
        // Calculate the image size based on forced 4 channels
        size_t imageSize = static_cast<size_t>(width) * height * 4;
 
        // Copy pixel data into a vector
        std::vector<unsigned char> imageData(pixels, pixels + imageSize);
 
        // Free the memory allocated by stbi_load
        stbi_image_free(pixels);
 
        // Create and return the TextureLoadData struct
        return std::make_unique<TextureLoadData>(std::move(imageData), width, height, 4);
    }
}