feat: reorganize source code + cleanup

src/renderer/texture.cpp

@@ -0,0 +1,37 @@
+#include <iostream>
+#include <memory>
+
+#include <GL/glew.h>
+#include "renderer/texture.h"
+
+#define STB_IMAGE_IMPLEMENTATION
+#include "stb_image.h"
+
+std::unique_ptr<Texture> Texture::LoadFile(const std::string& filename) {
+    auto texture = std::make_unique<Texture>();
+
+    int w, h, c;
+    unsigned char *data = stbi_load(filename.c_str(), &w, &h, &c, 4);
+    if (!data) {
+        std::cerr << "ERROR: Failed to load texture under '" << filename << "'" << std::endl;
+        std::exit(1);
+    }
+
+    glGenTextures(1, &texture.get()->m_id);
+    glBindTexture(GL_TEXTURE_2D, texture.get()->m_id);
+
+    // TODO: configure properly
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);	
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
+
+    // TODO: automatically detect values for this function
+    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, data);
+    glGenerateMipmap(GL_TEXTURE_2D);
+
+    std::cout << "Loaded texture under '" << filename << "' with size of " << sizeof(data) << " bytes" << std::endl;
+    stbi_image_free(data);
+
+    return std::move(texture);
+}