Support for out-of-source builds.

Uses environment variable to tell the program where to find resource
files.
Sharder sources are still search for in the current workind directory.

includes/learnopengl/filesystem.h

@@ -0,0 +1,49 @@
+#ifndef FILESYSTEM_H
+#define FILESYSTEM_H
+
+#include <string>
+
+class FileSystem
+{
+private:
+  typedef std::string (*Builder) (const std::string& path);
+
+public:
+  static std::string getPath(const std::string& path)
+  {
+    static std::string(*pathBuilder)(std::string const &) = getPathBuilder();
+    return (*pathBuilder)(path);
+  }
+
+private:
+  static std::string const & getRoot()
+  {
+    static char const * givenRoot {getenv("LOGL_ROOT_PATH")};
+    static std::string root {givenRoot != nullptr ? givenRoot : ""};
+    return root;
+  }
+
+  //static std::string(*foo (std::string const &)) getPathBuilder()
+  static Builder getPathBuilder()
+  {
+    if (getRoot() != "")
+      return &FileSystem::getPathRelativeRoot;
+    else
+      return &FileSystem::getPathRelativeBinary;
+  }
+
+  static std::string getPathRelativeRoot(const std::string& path)
+  {
+    return getRoot() + std::string("/") + path;
+  }
+
+  static std::string getPathRelativeBinary(const std::string& path)
+  {
+    return "../../../" + path;
+  }
+
+
+};
+
+// FILESYSTEM_H
+#endif

includes/learnopengl/model.h

@@ -31,7 +31,7 @@ public:
 
     /*  Functions   */
     // Constructor, expects a filepath to a 3D model.
-    Model(GLchar* path, bool gamma = false) : gammaCorrection(gamma)
+    Model(string const & path, bool gamma = false) : gammaCorrection(gamma)
     {
         this->loadModel(path);
     }

src/1.getting_started/4.textures/textures_combined.cpp

@@ -12,7 +12,7 @@
 
 // Other includes
 #include <learnopengl/shader.h>
-
+#include <learnopengl/filesystem.h>
 
 // Function prototypes
 void key_callback(GLFWwindow* window, int key, int scancode, int action, int mode);
@@ -105,7 +105,9 @@ int main()
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
     // Load, create texture and generate mipmaps
     int width, height;
-    unsigned char* image = SOIL_load_image("../../../resources/textures/container.jpg", &width, &height, 0, SOIL_LOAD_RGB);
+
+    unsigned char* image = SOIL_load_image(FileSystem::getPath("resources/textures/container.jpg").c_str(), &width, &height, 0, SOIL_LOAD_RGB);
+
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, image);
     glGenerateMipmap(GL_TEXTURE_2D);
     SOIL_free_image_data(image);
@@ -122,7 +124,7 @@ int main()
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
     // Load, create texture and generate mipmaps
-    image = SOIL_load_image("../../../resources/textures/awesomeface.png", &width, &height, 0, SOIL_LOAD_RGB);
+    image = SOIL_load_image(FileSystem::getPath("resources/textures/awesomeface.png").c_str(), &width, &height, 0, SOIL_LOAD_RGB);
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, image);
     glGenerateMipmap(GL_TEXTURE_2D);
     SOIL_free_image_data(image);

src/1.getting_started/5.transformations/transformations.cpp

@@ -16,7 +16,7 @@
 
 // Other includes
 #include <learnopengl/shader.h>
-
+#include <learnopengl/filesystem.h>
 
 // Function prototypes
 void key_callback(GLFWwindow* window, int key, int scancode, int action, int mode);
@@ -109,7 +109,7 @@ int main()
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
     // Load, create texture and generate mipmaps
     int width, height;
-    unsigned char* image = SOIL_load_image("../../../resources/textures/container.jpg", &width, &height, 0, SOIL_LOAD_RGB);
+    unsigned char* image = SOIL_load_image(FileSystem::getPath("resources/textures/container.jpg").c_str(), &width, &height, 0, SOIL_LOAD_RGB);
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, image);
     glGenerateMipmap(GL_TEXTURE_2D);
     SOIL_free_image_data(image);
@@ -126,7 +126,7 @@ int main()
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
     // Load, create texture and generate mipmaps
-    image = SOIL_load_image("../../../resources/textures/awesomeface.png", &width, &height, 0, SOIL_LOAD_RGB);
+    image = SOIL_load_image(FileSystem::getPath("resources/textures/awesomeface.png").c_str(), &width, &height, 0, SOIL_LOAD_RGB);
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, image);
     glGenerateMipmap(GL_TEXTURE_2D);
     SOIL_free_image_data(image);

src/1.getting_started/6.coordinate_systems/coordinate_systems_multiple_objects.cpp

@@ -16,7 +16,7 @@
 
 // Other includes
 #include <learnopengl/shader.h>
-
+#include <learnopengl/filesystem.h>
 
 // Function prototypes
 void key_callback(GLFWwindow* window, int key, int scancode, int action, int mode);
@@ -150,7 +150,7 @@ int main()
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
     // Load, create texture and generate mipmaps
     int width, height;
-    unsigned char* image = SOIL_load_image("../../../resources/textures/container.jpg", &width, &height, 0, SOIL_LOAD_RGB);
+    unsigned char* image = SOIL_load_image(FileSystem::getPath("resources/textures/container.jpg").c_str(), &width, &height, 0, SOIL_LOAD_RGB);
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, image);
     glGenerateMipmap(GL_TEXTURE_2D);
     SOIL_free_image_data(image);
@@ -167,7 +167,7 @@ int main()
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
     // Load, create texture and generate mipmaps
-    image = SOIL_load_image("../../../resources/textures/awesomeface.png", &width, &height, 0, SOIL_LOAD_RGB);
+    image = SOIL_load_image(FileSystem::getPath("resources/textures/awesomeface.png").c_str(), &width, &height, 0, SOIL_LOAD_RGB);
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, image);
     glGenerateMipmap(GL_TEXTURE_2D);
     SOIL_free_image_data(image);

src/1.getting_started/7.camera/camera_with_class.cpp

@@ -19,6 +19,7 @@
 
 // Other Libs
 #include <SOIL.h>
+#include <learnopengl/filesystem.h>
 
 // Properties
 GLuint screenWidth = 800, screenHeight = 600;
@@ -162,7 +163,7 @@ int main()
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
     // Load, create texture and generate mipmaps
     int width, height;
-    unsigned char* image = SOIL_load_image("../../../resources/textures/container.jpg", &width, &height, 0, SOIL_LOAD_RGB); 
+    unsigned char* image = SOIL_load_image(FileSystem::getPath("resources/textures/container.jpg").c_str(), &width, &height, 0, SOIL_LOAD_RGB);
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, image);
     glGenerateMipmap(GL_TEXTURE_2D);
     SOIL_free_image_data(image);
@@ -177,7 +178,7 @@ int main()
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
     // Load, create texture and generate mipmaps
-    image = SOIL_load_image("../../../resources/textures/awesomeface.png", &width, &height, 0, SOIL_LOAD_RGB); 
+    image = SOIL_load_image(FileSystem::getPath("resources/textures/awesomeface.png").c_str(), &width, &height, 0, SOIL_LOAD_RGB);
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, image);
     glGenerateMipmap(GL_TEXTURE_2D);
     SOIL_free_image_data(image);

src/2.lighting/4.lighting_maps/lighting_maps_specular.cpp

@@ -18,7 +18,7 @@
 // Other includes
 #include <learnopengl/shader.h>
 #include <learnopengl/camera.h>
-
+#include <learnopengl/filesystem.h>
 
 // Function prototypes
 void key_callback(GLFWwindow* window, int key, int scancode, int action, int mode);
@@ -163,7 +163,7 @@ int main()
     int width, height;
     unsigned char* image;
     // Diffuse map
-    image = SOIL_load_image("../../../resources/textures/container2.png", &width, &height, 0, SOIL_LOAD_RGB);
+    image = SOIL_load_image(FileSystem::getPath("resources/textures/container2.png").c_str(), &width, &height, 0, SOIL_LOAD_RGB);
     glBindTexture(GL_TEXTURE_2D, diffuseMap);
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, image);
     glGenerateMipmap(GL_TEXTURE_2D);
@@ -173,7 +173,7 @@ int main()
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST_MIPMAP_NEAREST);
     // Specular map
-    image = SOIL_load_image("../../../resources/textures/container2_specular.png", &width, &height, 0, SOIL_LOAD_RGB);
+    image = SOIL_load_image(FileSystem::getPath("resources/textures/container2_specular.png").c_str(), &width, &height, 0, SOIL_LOAD_RGB);
     glBindTexture(GL_TEXTURE_2D, specularMap);
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, image);
     glGenerateMipmap(GL_TEXTURE_2D);

src/2.lighting/5.light_casters/light_casters_spotlight_soft.cpp

@@ -18,7 +18,7 @@
 // Other includes
 #include <learnopengl/shader.h>
 #include <learnopengl/camera.h>
-
+#include <learnopengl/filesystem.h>
 
 // Function prototypes
 void key_callback(GLFWwindow* window, int key, int scancode, int action, int mode);
@@ -176,7 +176,7 @@ int main()
     int width, height;
     unsigned char* image;
     // Diffuse map
-    image = SOIL_load_image("../../../resources/textures/container2.png", &width, &height, 0, SOIL_LOAD_RGB);
+    image = SOIL_load_image(FileSystem::getPath("resources/textures/container2.png").c_str(), &width, &height, 0, SOIL_LOAD_RGB);
     glBindTexture(GL_TEXTURE_2D, diffuseMap);
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, image);
     glGenerateMipmap(GL_TEXTURE_2D);
@@ -186,7 +186,7 @@ int main()
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST_MIPMAP_NEAREST);
     // Specular map
-    image = SOIL_load_image("../../../resources/textures/container2_specular.png", &width, &height, 0, SOIL_LOAD_RGB);
+    image = SOIL_load_image(FileSystem::getPath("resources/textures/container2_specular.png").c_str(), &width, &height, 0, SOIL_LOAD_RGB);
     glBindTexture(GL_TEXTURE_2D, specularMap);
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, image);
     glGenerateMipmap(GL_TEXTURE_2D);

src/2.lighting/6.multiple_lights/multiple_lights.cpp

@@ -18,7 +18,7 @@
 // Other includes
 #include <learnopengl/shader.h>
 #include <learnopengl/camera.h>
-
+#include <learnopengl/filesystem.h>
 
 // Function prototypes
 void key_callback(GLFWwindow* window, int key, int scancode, int action, int mode);
@@ -183,7 +183,7 @@ int main()
     int width, height;
     unsigned char* image;
     // Diffuse map
-    image = SOIL_load_image("../../../resources/textures/container2.png", &width, &height, 0, SOIL_LOAD_RGB);
+    image = SOIL_load_image(FileSystem::getPath("resources/textures/container2.png").c_str(), &width, &height, 0, SOIL_LOAD_RGB);
     glBindTexture(GL_TEXTURE_2D, diffuseMap);
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, image);
     glGenerateMipmap(GL_TEXTURE_2D);
@@ -193,7 +193,7 @@ int main()
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR_MIPMAP_LINEAR);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST_MIPMAP_NEAREST);
     // Specular map
-    image = SOIL_load_image("../../../resources/textures/container2_specular.png", &width, &height, 0, SOIL_LOAD_RGB);
+    image = SOIL_load_image(FileSystem::getPath("resources/textures/container2_specular.png").c_str(), &width, &height, 0, SOIL_LOAD_RGB);
     glBindTexture(GL_TEXTURE_2D, specularMap);
     glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, width, height, 0, GL_RGB, GL_UNSIGNED_BYTE, image);
     glGenerateMipmap(GL_TEXTURE_2D);

src/3.model_loading/1.model_loading/model_rendered.cpp

@@ -20,6 +20,7 @@
 
 // Other Libs
 #include <SOIL.h>
+#include <learnopengl/filesystem.h>
 
 // Properties
 GLuint screenWidth = 800, screenHeight = 600;
@@ -74,8 +75,8 @@ int main()
     Shader shader("shader.vs", "shader.frag");
 
     // Load models
-    Model ourModel("../../../resources/objects/nanosuit/nanosuit.obj");
-    
+    Model ourModel(FileSystem::getPath("resources/objects/nanosuit/nanosuit.obj").c_str());
+
     // Draw in wireframe
     //glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
 

src/4.advanced_opengl/1.depth_testing/depth_testing_func.cpp

@@ -19,6 +19,7 @@
 
 // Other Libs
 #include <SOIL.h>
+#include <learnopengl/filesystem.h>
 
 // Properties
 GLuint screenWidth = 800, screenHeight = 600;
@@ -28,7 +29,7 @@ void key_callback(GLFWwindow* window, int key, int scancode, int action, int mod
 void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
 void mouse_callback(GLFWwindow* window, double xpos, double ypos);
 void Do_Movement();
-GLuint loadTexture(GLchar* path);
+GLuint loadTexture(GLchar const * path);
 
 // Camera
 Camera camera(glm::vec3(0.0f, 0.0f, 3.0f));
@@ -156,8 +157,8 @@ int main()
     glBindVertexArray(0);
 
     // Load textures
-    GLuint cubeTexture = loadTexture("../../../resources/textures/marble.jpg");
-    GLuint floorTexture = loadTexture("../../../resources/textures/metal.png");
+    GLuint cubeTexture = loadTexture(FileSystem::getPath("resources/textures/marble.jpg").c_str());
+    GLuint floorTexture = loadTexture(FileSystem::getPath("resources/textures/metal.png").c_str());
     #pragma endregion
 
     // Game loop
@@ -213,7 +214,7 @@ int main()
 // This function loads a texture from file. Note: texture loading functions like these are usually 
 // managed by a 'Resource Manager' that manages all resources (like textures, models, audio). 
 // For learning purposes we'll just define it as a utility function.
-GLuint loadTexture(GLchar* path)
+GLuint loadTexture(GLchar const * path)
 {
     //Generate texture ID and load texture data 
     GLuint textureID;

src/4.advanced_opengl/10.instancing/instancing_asteroids_instanced.cpp

@@ -15,6 +15,8 @@
 #include <glm/gtc/matrix_transform.hpp>
 #include <glm/gtc/type_ptr.hpp>
 
+#include <learnopengl/filesystem.h>
+
 // Properties
 GLuint screenWidth = 800, screenHeight = 600;
 
@@ -67,8 +69,8 @@ int main()
     Shader instanceShader("instanced_asteroids.vs", "instanced_asteroids.frag");
 
     // Load models
-    Model rock("../../../resources/objects/rock/rock.obj");
-    Model planet("../../../resources/objects/planet/planet.obj");
+    Model rock(FileSystem::getPath("resources/objects/rock/rock.obj").c_str());
+    Model planet(FileSystem::getPath("resources/objects/planet/planet.obj").c_str());
 
     // Set projection matrix
     glm::mat4 projection = glm::perspective(45.0f, (GLfloat)screenWidth/(GLfloat)screenHeight, 1.0f, 10000.0f);

src/4.advanced_opengl/2.stencil_testing/stencil_testing.cpp

@@ -19,6 +19,7 @@
 
 // Other Libs
 #include <SOIL.h>
+#include <learnopengl/filesystem.h>
 
 // Properties
 GLuint screenWidth = 800, screenHeight = 600;
@@ -28,7 +29,7 @@ void key_callback(GLFWwindow* window, int key, int scancode, int action, int mod
 void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
 void mouse_callback(GLFWwindow* window, double xpos, double ypos);
 void Do_Movement();
-GLuint loadTexture(GLchar* path);
+GLuint loadTexture(GLchar const * path);
 
 // Camera
 Camera camera(glm::vec3(0.0f, 0.0f, 3.0f));
@@ -160,8 +161,8 @@ int main()
     glBindVertexArray(0);
 
     // Load textures
-    GLuint cubeTexture = loadTexture("../../../resources/textures/marble.jpg");
-    GLuint floorTexture = loadTexture("../../../resources/textures/metal.png");
+    GLuint cubeTexture = loadTexture(FileSystem::getPath("resources/textures/marble.jpg").c_str());
+    GLuint floorTexture = loadTexture(FileSystem::getPath("resources/textures/metal.png").c_str());
     #pragma endregion
 
     // Game loop
@@ -260,7 +261,7 @@ void DrawScene()
 // This function loads a texture from file. Note: texture loading functions like these are usually 
 // managed by a 'Resource Manager' that manages all resources (like textures, models, audio). 
 // For learning purposes we'll just define it as a utility function.
-GLuint loadTexture(GLchar* path)
+GLuint loadTexture(GLchar const * path)
 {
     //Generate texture ID and load texture data 
     GLuint textureID;

src/4.advanced_opengl/3.1.blending_discard/blending_discard.cpp

@@ -19,6 +19,7 @@
 
 // Other Libs
 #include <SOIL.h>
+#include <learnopengl/filesystem.h>
 
 // Properties
 GLuint screenWidth = 800, screenHeight = 600;
@@ -28,7 +29,7 @@ void key_callback(GLFWwindow* window, int key, int scancode, int action, int mod
 void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
 void mouse_callback(GLFWwindow* window, double xpos, double ypos);
 void Do_Movement();
-GLuint loadTexture(GLchar* path, GLboolean alpha = false);
+GLuint loadTexture(GLchar const * path, GLboolean alpha = false);
 
 // Camera
 Camera camera(glm::vec3(0.0f, 0.0f, 3.0f));
@@ -177,9 +178,9 @@ int main()
     glBindVertexArray(0);
 
     // Load textures
-    GLuint cubeTexture = loadTexture("../../../resources/textures/marble.jpg");
-    GLuint floorTexture = loadTexture("../../../resources/textures/metal.png");
-    GLuint transparentTexture = loadTexture("../../../resources/textures/grass.png", true);
+    GLuint cubeTexture = loadTexture(FileSystem::getPath("resources/textures/marble.jpg").c_str());
+    GLuint floorTexture = loadTexture(FileSystem::getPath("resources/textures/metal.png").c_str());
+    GLuint transparentTexture = loadTexture(FileSystem::getPath("resources/textures/grass.png").c_str(), true);
 #pragma endregion
 
     std::vector<glm::vec3> vegetation;
@@ -252,7 +253,7 @@ int main()
 // This function loads a texture from file. Note: texture loading functions like these are usually 
 // managed by a 'Resource Manager' that manages all resources (like textures, models, audio). 
 // For learning purposes we'll just define it as a utility function.
-GLuint loadTexture(GLchar* path, GLboolean alpha)
+GLuint loadTexture(GLchar const * path, GLboolean alpha)
 {
     //Generate texture ID and load texture data 
     GLuint textureID;

src/4.advanced_opengl/3.2.blending_sort/blending_sorted.cpp

@@ -20,6 +20,7 @@
 
 // Other Libs
 #include <SOIL.h>
+#include <learnopengl/filesystem.h>
 
 // Properties
 GLuint screenWidth = 800, screenHeight = 600;
@@ -29,7 +30,7 @@ void key_callback(GLFWwindow* window, int key, int scancode, int action, int mod
 void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
 void mouse_callback(GLFWwindow* window, double xpos, double ypos);
 void Do_Movement();
-GLuint loadTexture(GLchar* path, GLboolean alpha = false);
+GLuint loadTexture(GLchar const * path, GLboolean alpha = false);
 
 // Camera
 Camera camera(glm::vec3(0.0f, 0.0f, 3.0f));
@@ -180,9 +181,9 @@ int main()
     glBindVertexArray(0);
 
     // Load textures
-    GLuint cubeTexture = loadTexture("../../../resources/textures/marble.jpg");
-    GLuint floorTexture = loadTexture("../../../resources/textures/metal.png");
-    GLuint transparentTexture = loadTexture("../../../resources/textures/window.png", true);
+    GLuint cubeTexture = loadTexture(FileSystem::getPath("resources/textures/marble.jpg").c_str());
+    GLuint floorTexture = loadTexture(FileSystem::getPath("resources/textures/metal.png").c_str());
+    GLuint transparentTexture = loadTexture(FileSystem::getPath("resources/textures/window.png").c_str(), true);
 #pragma endregion
 
     std::vector<glm::vec3> windows;
@@ -263,7 +264,7 @@ int main()
 // This function loads a texture from file. Note: texture loading functions like these are usually 
 // managed by a 'Resource Manager' that manages all resources (like textures, models, audio). 
 // For learning purposes we'll just define it as a utility function.
-GLuint loadTexture(GLchar* path, GLboolean alpha)
+GLuint loadTexture(GLchar const * path, GLboolean alpha)
 {
     //Generate texture ID and load texture data 
     GLuint textureID;

src/4.advanced_opengl/5.framebuffers/framebuffers_screen_texture.cpp

@@ -21,6 +21,7 @@ using namespace std;
 
 // Other Libs
 #include <SOIL.h>
+#include <learnopengl/filesystem.h>
 
 // Properties
 GLuint screenWidth = 800, screenHeight = 600;
@@ -30,7 +31,7 @@ void key_callback(GLFWwindow* window, int key, int scancode, int action, int mod
 void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
 void mouse_callback(GLFWwindow* window, double xpos, double ypos);
 void Do_Movement();
-GLuint loadTexture(GLchar* path, GLboolean alpha = false);
+GLuint loadTexture(GLchar const * path, GLboolean alpha = false);
 GLuint generateAttachmentTexture(GLboolean depth, GLboolean stencil);
 
 // Camera
@@ -182,8 +183,8 @@ int main()
     glBindVertexArray(0);
 
     // Load textures
-    GLuint cubeTexture = loadTexture("../../../resources/textures/container.jpg");
-    GLuint floorTexture = loadTexture("../../../resources/textures/metal.png");
+    GLuint cubeTexture = loadTexture(FileSystem::getPath("resources/textures/container.jpg").c_str());
+    GLuint floorTexture = loadTexture(FileSystem::getPath("resources/textures/metal.png").c_str());
     #pragma endregion
 
     // Framebuffers
@@ -291,7 +292,7 @@ int main()
 // This function loads a texture from file. Note: texture loading functions like these are usually 
 // managed by a 'Resource Manager' that manages all resources (like textures, models, audio). 
 // For learning purposes we'll just define it as a utility function.
-GLuint loadTexture(GLchar* path, GLboolean alpha)
+GLuint loadTexture(GLchar const * path, GLboolean alpha)
 {
     //Generate texture ID and load texture data 
     GLuint textureID;

src/4.advanced_opengl/6.cubemaps/cubemaps_skybox_optimized.cpp

@@ -21,6 +21,7 @@ using namespace std;
 
 // Other Libs
 #include <SOIL.h>
+#include <learnopengl/filesystem.h>
 
 // Properties
 GLuint screenWidth = 800, screenHeight = 600;
@@ -30,7 +31,7 @@ void key_callback(GLFWwindow* window, int key, int scancode, int action, int mod
 void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
 void mouse_callback(GLFWwindow* window, double xpos, double ypos);
 void Do_Movement();
-GLuint loadTexture(GLchar* path);
+GLuint loadTexture(GLchar const * path);
 GLuint loadCubemap(std::vector<const GLchar*> faces);
 
 // Camera
@@ -198,12 +199,12 @@ int main()
 
     // Cubemap (Skybox)
     std::vector<const GLchar*> faces;
-    faces.push_back("../../../resources/textures/skybox/right.jpg");
-    faces.push_back("../../../resources/textures/skybox/left.jpg");
-    faces.push_back("../../../resources/textures/skybox/top.jpg");
-    faces.push_back("../../../resources/textures/skybox/bottom.jpg");
-    faces.push_back("../../../resources/textures/skybox/back.jpg");
-    faces.push_back("../../../resources/textures/skybox/front.jpg");
+    faces.push_back(FileSystem::getPath("resources/textures/skybox/right.jpg").c_str());
+    faces.push_back(FileSystem::getPath("resources/textures/skybox/left.jpg").c_str());
+    faces.push_back(FileSystem::getPath("resources/textures/skybox/top.jpg").c_str());
+    faces.push_back(FileSystem::getPath("resources/textures/skybox/bottom.jpg").c_str());
+    faces.push_back(FileSystem::getPath("resources/textures/skybox/back.jpg").c_str());
+    faces.push_back(FileSystem::getPath("resources/textures/skybox/front.jpg").c_str());
     GLuint skyboxTexture = loadCubemap(faces);
 
     // Draw as wireframe
@@ -300,7 +301,7 @@ GLuint loadCubemap(std::vector<const GLchar*> faces)
 // This function loads a texture from file. Note: texture loading functions like these are usually 
 // managed by a 'Resource Manager' that manages all resources (like textures, models, audio). 
 // For learning purposes we'll just define it as a utility function.
-GLuint loadTexture(GLchar* path)
+GLuint loadTexture(GLchar const * path)
 {
     //Generate texture ID and load texture data 
     GLuint textureID;

src/5.advanced_lighting/1.advanced_lighting/advanced_lighting.cpp

@@ -16,6 +16,7 @@
 
 // Other Libs
 #include <SOIL.h>
+#include <learnopengl/filesystem.h>
 
 // Properties
 const GLuint SCR_WIDTH = 800, SCR_HEIGHT = 600;
@@ -25,7 +26,7 @@ void key_callback(GLFWwindow* window, int key, int scancode, int action, int mod
 void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
 void mouse_callback(GLFWwindow* window, double xpos, double ypos);
 void Do_Movement();
-GLuint loadTexture(GLchar* path);
+GLuint loadTexture(GLchar const * path);
 
 // Camera
 Camera camera(glm::vec3(0.0f, 0.0f, 3.0f));
@@ -100,7 +101,7 @@ int main()
     glm::vec3 lightPos(0.0f, 0.0f, 0.0f);
 
     // Load textures
-    GLuint floorTexture = loadTexture("../../../resources/textures/wood.png");
+    GLuint floorTexture = loadTexture(FileSystem::getPath("resources/textures/wood.png").c_str());
 
     // Game loop
     while(!glfwWindowShouldClose(window))
@@ -147,7 +148,7 @@ int main()
 // This function loads a texture from file. Note: texture loading functions like these are usually 
 // managed by a 'Resource Manager' that manages all resources (like textures, models, audio). 
 // For learning purposes we'll just define it as a utility function.
-GLuint loadTexture(GLchar* path)
+GLuint loadTexture(GLchar const * path)
 {
     // Generate texture ID and load texture data 
     GLuint textureID;

src/5.advanced_lighting/2.gamma_correction/gamma_correction.cpp

@@ -16,6 +16,7 @@
 
 // Other Libs
 #include <SOIL.h>
+#include <learnopengl/filesystem.h>
 
 // Properties
 const GLuint SCR_WIDTH = 800, SCR_HEIGHT = 600;
@@ -25,7 +26,7 @@ void key_callback(GLFWwindow* window, int key, int scancode, int action, int mod
 void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
 void mouse_callback(GLFWwindow* window, double xpos, double ypos);
 void Do_Movement();
-GLuint loadTexture(GLchar* path, bool gammaCorrection);
+GLuint loadTexture(GLchar const * path, bool gammaCorrection);
 
 // Camera
 Camera camera(glm::vec3(0.0f, 0.0f, 3.0f));
@@ -112,8 +113,8 @@ int main()
     };
 
     // Load textures
-    GLuint floorTexture = loadTexture("../../../resources/textures/wood.png", false);
-    GLuint floorTextureGammaCorrected = loadTexture("../../../resources/textures/wood.png", true);
+    GLuint floorTexture = loadTexture(FileSystem::getPath("resources/textures/wood.png").c_str(), false);
+    GLuint floorTextureGammaCorrected = loadTexture(FileSystem::getPath("resources/textures/wood.png").c_str(), true);
 
     // Game loop
     while (!glfwWindowShouldClose(window))
@@ -161,7 +162,7 @@ int main()
 // This function loads a texture from file. Note: texture loading functions like these are usually 
 // managed by a 'Resource Manager' that manages all resources (like textures, models, audio). 
 // For learning purposes we'll just define it as a utility function.
-GLuint loadTexture(GLchar* path, bool gammaCorrection)
+GLuint loadTexture(GLchar const * path, bool gammaCorrection)
 {
     // Generate texture ID and load texture data 
     GLuint textureID;

src/5.advanced_lighting/3.1.shadow_mapping/shadow_mapping.cpp

@@ -16,6 +16,7 @@
 
 // Other Libs
 #include <SOIL.h>
+#include <learnopengl/filesystem.h>
 
 // Properties
 const GLuint SCR_WIDTH = 800, SCR_HEIGHT = 600;
@@ -25,7 +26,7 @@ void key_callback(GLFWwindow* window, int key, int scancode, int action, int mod
 void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
 void mouse_callback(GLFWwindow* window, double xpos, double ypos);
 void Do_Movement();
-GLuint loadTexture(GLchar* path);
+GLuint loadTexture(GLchar const * path);
 void RenderScene(Shader &shader);
 void RenderCube();
 void RenderQuad();
@@ -90,7 +91,7 @@ int main()
          25.0f, -0.5f,  25.0f,  0.0f,  1.0f,  0.0f,  25.0f, 0.0f,
         -25.0f, -0.5f, -25.0f,  0.0f,  1.0f,  0.0f,  0.0f,  25.0f,
         -25.0f, -0.5f,  25.0f,  0.0f,  1.0f,  0.0f,  0.0f,  0.0f,
- 
+
          25.0f, -0.5f,  25.0f,  0.0f,  1.0f,  0.0f,  25.0f, 0.0f,
          25.0f, -0.5f, -25.0f,  0.0f,  1.0f,  0.0f,  25.0f, 25.0f,
         -25.0f, -0.5f, -25.0f,  0.0f,  1.0f,  0.0f,  0.0f,  25.0f
@@ -114,7 +115,7 @@ int main()
     glm::vec3 lightPos(-2.0f, 4.0f, -1.0f);
 
     // Load textures
-    woodTexture = loadTexture("../../../resources/textures/wood.png");
+    woodTexture = loadTexture(FileSystem::getPath("resources/textures/wood.png").c_str());
 
     // Configure depth map FBO
     const GLuint SHADOW_WIDTH = 1024, SHADOW_HEIGHT = 1024;
@@ -128,7 +129,7 @@ int main()
     glTexImage2D(GL_TEXTURE_2D, 0, GL_DEPTH_COMPONENT, SHADOW_WIDTH, SHADOW_HEIGHT, 0, GL_DEPTH_COMPONENT, GL_FLOAT, NULL);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
-    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER); 
+    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_BORDER);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_BORDER);
     GLfloat borderColor[] = { 1.0, 1.0, 1.0, 1.0 };
     glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_BORDER_COLOR, borderColor);
@@ -174,7 +175,7 @@ int main()
             RenderScene(simpleDepthShader);
         glBindFramebuffer(GL_FRAMEBUFFER, 0);
 
-        // 2. Render scene as normal 
+        // 2. Render scene as normal
         glViewport(0, 0, SCR_WIDTH, SCR_HEIGHT);
         glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
         shader.Use();
@@ -201,7 +202,7 @@ int main()
         glActiveTexture(GL_TEXTURE0);
         glBindTexture(GL_TEXTURE_2D, depthMap);
         //RenderQuad(); // uncomment this line to see depth map
-        
+
 
         // Swap the buffers
         glfwSwapBuffers(window);
@@ -216,7 +217,7 @@ void RenderScene(Shader &shader)
     // Floor
     glm::mat4 model;
     glUniformMatrix4fv(glGetUniformLocation(shader.Program, "model"), 1, GL_FALSE, glm::value_ptr(model));
-    glBindVertexArray(planeVAO);    
+    glBindVertexArray(planeVAO);
     glDrawArrays(GL_TRIANGLES, 0, 6);
     glBindVertexArray(0);
     // Cubes
@@ -280,7 +281,7 @@ void RenderCube()
             // Back face
             -0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, // Bottom-left
             0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f, // top-right
-            0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f, // bottom-right         
+            0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f, // bottom-right
             0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f,  // top-right
             -0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f,  // bottom-left
             -0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f,// top-left
@@ -301,10 +302,10 @@ void RenderCube()
             // Right face
             0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, // top-left
             0.5f, -0.5f, -0.5f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f, // bottom-right
-            0.5f, 0.5f, -0.5f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, // top-right         
+            0.5f, 0.5f, -0.5f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, // top-right
             0.5f, -0.5f, -0.5f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f,  // bottom-right
             0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f,  // top-left
-            0.5f, -0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, // bottom-left     
+            0.5f, -0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, // bottom-left
             // Bottom face
             -0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f, 0.0f, 1.0f, // top-right
             0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f, 1.0f, 1.0f, // top-left
@@ -315,10 +316,10 @@ void RenderCube()
             // Top face
             -0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f,// top-left
             0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, // bottom-right
-            0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, // top-right     
+            0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, // top-right
             0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, // bottom-right
             -0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f,// top-left
-            -0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f // bottom-left        
+            -0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f // bottom-left
         };
         glGenVertexArrays(1, &cubeVAO);
         glGenBuffers(1, &cubeVBO);
@@ -342,12 +343,12 @@ void RenderCube()
     glBindVertexArray(0);
 }
 
-// This function loads a texture from file. Note: texture loading functions like these are usually 
-// managed by a 'Resource Manager' that manages all resources (like textures, models, audio). 
+// This function loads a texture from file. Note: texture loading functions like these are usually
+// managed by a 'Resource Manager' that manages all resources (like textures, models, audio).
 // For learning purposes we'll just define it as a utility function.
-GLuint loadTexture(GLchar* path)
+GLuint loadTexture(GLchar const * path)
 {
-    // Generate texture ID and load texture data 
+    // Generate texture ID and load texture data
     GLuint textureID;
     glGenTextures(1, &textureID);
     int width, height;
@@ -431,4 +432,4 @@ void mouse_callback(GLFWwindow* window, double xpos, double ypos)
 void scroll_callback(GLFWwindow* window, double xoffset, double yoffset)
 {
     camera.ProcessMouseScroll(yoffset);
-}
+}

src/5.advanced_lighting/3.2.point_shadows/point_shadows.cpp

@@ -16,6 +16,7 @@
 
 // Other Libs
 #include <SOIL.h>
+#include <learnopengl/filesystem.h>
 
 // Properties
 const GLuint SCR_WIDTH = 800, SCR_HEIGHT = 600;
@@ -25,7 +26,7 @@ void key_callback(GLFWwindow* window, int key, int scancode, int action, int mod
 void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
 void mouse_callback(GLFWwindow* window, double xpos, double ypos);
 void Do_Movement();
-GLuint loadTexture(GLchar* path);
+GLuint loadTexture(GLchar const * path);
 void RenderScene(Shader &shader);
 void RenderCube();
 void RenderQuad();
@@ -89,7 +90,7 @@ int main()
     glm::vec3 lightPos(0.0f, 0.0f, 0.0f);
 
     // Load textures
-    woodTexture = loadTexture("../../../resources/textures/wood.png");
+    woodTexture = loadTexture(FileSystem::getPath("resources/textures/wood.png").c_str());
 
     // Configure depth map FBO
     const GLuint SHADOW_WIDTH = 1024, SHADOW_HEIGHT = 1024;
@@ -300,7 +301,7 @@ void RenderCube()
 // This function loads a texture from file. Note: texture loading functions like these are usually 
 // managed by a 'Resource Manager' that manages all resources (like textures, models, audio). 
 // For learning purposes we'll just define it as a utility function.
-GLuint loadTexture(GLchar* path)
+GLuint loadTexture(GLchar const * path)
 {
     // Generate texture ID and load texture data 
     GLuint textureID;

src/5.advanced_lighting/3.3.csm/csm.cpp

@@ -28,7 +28,7 @@ void key_callback(GLFWwindow* window, int key, int scancode, int action, int mod
 void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
 void mouse_callback(GLFWwindow* window, double xpos, double ypos);
 void Do_Movement();
-GLuint loadTexture(GLchar* path);
+GLuint loadTexture(GLchar const * path);
 
 // Camera
 Camera camera(glm::vec3(0.0f, 0.0f, 3.0f));
@@ -156,8 +156,8 @@ int main()
     glBindVertexArray(0);
 
     // Load textures
-    GLuint cubeTexture = loadTexture("../../../resources/textures/marble.jpg");
-    GLuint floorTexture = loadTexture("../../../resources/textures/metal.png");
+    GLuint cubeTexture = loadTexture(FileSystem::getPath("resources/textures/marble.jpg").c_str());
+    GLuint floorTexture = loadTexture(FileSystem::getPath("resources/textures/metal.png").c_str());
     #pragma endregion
 
     // Game loop
@@ -213,7 +213,7 @@ int main()
 // This function loads a texture from file. Note: texture loading functions like these are usually 
 // managed by a 'Resource Manager' that manages all resources (like textures, models, audio). 
 // For learning purposes we'll just define it as a utility function.
-GLuint loadTexture(GLchar* path)
+GLuint loadTexture(GLchar const * path)
 {
     //Generate texture ID and load texture data 
     GLuint textureID;

src/5.advanced_lighting/4.normal_mapping/normal_mapping.cpp

@@ -20,6 +20,7 @@
 
 // Other Libs
 #include <SOIL.h>
+#include <learnopengl/filesystem.h>
 
 // Properties
 const GLuint SCR_WIDTH = 800, SCR_HEIGHT = 600;
@@ -29,7 +30,7 @@ void key_callback(GLFWwindow* window, int key, int scancode, int action, int mod
 void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
 void mouse_callback(GLFWwindow* window, double xpos, double ypos);
 void Do_Movement();
-GLuint loadTexture(GLchar* path);
+GLuint loadTexture(GLchar const * path);
 void RenderQuad();
 
 // Camera
@@ -73,8 +74,8 @@ int main()
     Shader shader("normal_mapping.vs", "normal_mapping.frag");
 
     // Load textures
-    GLuint diffuseMap = loadTexture("../../../resources/textures/brickwall.jpg");
-    GLuint normalMap = loadTexture("../../../resources/textures/brickwall_normal.jpg");
+    GLuint diffuseMap = loadTexture(FileSystem::getPath("resources/textures/brickwall.jpg").c_str());
+    GLuint normalMap = loadTexture(FileSystem::getPath("resources/textures/brickwall_normal.jpg").c_str());
 
     // Set texture units 
     shader.Use();
@@ -229,7 +230,7 @@ void RenderQuad()
 // This function loads a texture from file. Note: texture loading functions like these are usually 
 // managed by a 'Resource Manager' that manages all resources (like textures, models, audio). 
 // For learning purposes we'll just define it as a utility function.
-GLuint loadTexture(GLchar* path)
+GLuint loadTexture(GLchar const * path)
 {
     //Generate texture ID and load texture data 
     GLuint textureID;

src/5.advanced_lighting/5.parallax_mapping/parallax_mapping.cpp

@@ -20,6 +20,7 @@
 
 // Other Libs
 #include <SOIL.h>
+#include <learnopengl/filesystem.h>
 
 // Properties
 const GLuint SCR_WIDTH = 800, SCR_HEIGHT = 600;
@@ -29,7 +30,7 @@ void key_callback(GLFWwindow* window, int key, int scancode, int action, int mod
 void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
 void mouse_callback(GLFWwindow* window, double xpos, double ypos);
 void Do_Movement();
-GLuint loadTexture(GLchar* path);
+GLuint loadTexture(GLchar const * path);
 void RenderQuad();
 
 // Camera
@@ -76,12 +77,12 @@ int main()
     Shader shader("parallax_mapping.vs", "parallax_mapping.frag");
 
     // Load textures
-    GLuint diffuseMap = loadTexture("../../../resources/textures/bricks2.jpg");
-	GLuint normalMap = loadTexture("../../../resources/textures/bricks2_normal.jpg");
-	GLuint heightMap = loadTexture("../../../resources/textures/bricks2_disp.jpg");
-    //GLuint diffuseMap = loadTexture("../../../resources/textures/wood.png");
-    //GLuint normalMap = loadTexture("../../../resources/textures/toy_box_normal.png");
-    //GLuint heightMap = loadTexture("../../../resources/textures/toy_box_disp.png");
+    GLuint diffuseMap = loadTexture(FileSystem::getPath("resources/textures/bricks2.jpg").c_str());
+	GLuint normalMap = loadTexture(FileSystem::getPath("resources/textures/bricks2_normal.jpg").c_str());
+	GLuint heightMap = loadTexture(FileSystem::getPath("resources/textures/bricks2_disp.jpg").c_str());
+    //GLuint diffuseMap = loadTexture(FileSystem::getPath("resources/textures/wood.png").c_str();
+    //GLuint normalMap = loadTexture(FileSystem::getPath("resources/textures/toy_box_normal.png").c_str());
+    //GLuint heightMap = loadTexture(FileSystem::getPath("resources/textures/toy_box_disp.png").c_str());
 
     // Set texture units 
     shader.Use();
@@ -241,7 +242,7 @@ void RenderQuad()
 // This function loads a texture from file. Note: texture loading functions like these are usually 
 // managed by a 'Resource Manager' that manages all resources (like textures, models, audio). 
 // For learning purposes we'll just define it as a utility function.
-GLuint loadTexture(GLchar* path)
+GLuint loadTexture(GLchar const * path)
 {
     //Generate texture ID and load texture data 
     GLuint textureID;

src/5.advanced_lighting/6.hdr/hdr.cpp

@@ -16,6 +16,7 @@
 
 // Other Libs
 #include <SOIL.h>
+#include <learnopengl/filesystem.h>
 
 // Properties
 const GLuint SCR_WIDTH = 800, SCR_HEIGHT = 600;
@@ -25,7 +26,7 @@ void key_callback(GLFWwindow* window, int key, int scancode, int action, int mod
 void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
 void mouse_callback(GLFWwindow* window, double xpos, double ypos);
 void Do_Movement();
-GLuint loadTexture(GLchar* path);
+GLuint loadTexture(GLchar const * path);
 void RenderScene(Shader &shader);
 void RenderCube();
 void RenderQuad();
@@ -94,7 +95,7 @@ int main()
     lightColors.push_back(glm::vec3(0.0f, 0.1f, 0.0f));
 
     // Load textures
-    woodTexture = loadTexture("../../../resources/textures/wood.png");
+    woodTexture = loadTexture(FileSystem::getPath("resources/textures/wood.png").c_str());
 
     // Set up floating point framebuffer to render scene to
     GLuint hdrFBO;
@@ -288,7 +289,7 @@ void RenderCube()
 // This function loads a texture from file. Note: texture loading functions like these are usually 
 // managed by a 'Resource Manager' that manages all resources (like textures, models, audio). 
 // For learning purposes we'll just define it as a utility function.
-GLuint loadTexture(GLchar* path)
+GLuint loadTexture(GLchar const * path)
 {
     // Generate texture ID and load texture data 
     GLuint textureID;

src/5.advanced_lighting/7.bloom/bloom.cpp

@@ -16,6 +16,7 @@
 
 // Other Libs
 #include <SOIL.h>
+#include <learnopengl/filesystem.h>
 
 // Properties
 const GLuint SCR_WIDTH = 800, SCR_HEIGHT = 600;
@@ -25,7 +26,7 @@ void key_callback(GLFWwindow* window, int key, int scancode, int action, int mod
 void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
 void mouse_callback(GLFWwindow* window, double xpos, double ypos);
 void Do_Movement();
-GLuint loadTexture(GLchar* path);
+GLuint loadTexture(GLchar const * path);
 void RenderScene(Shader &shader);
 void RenderCube();
 void RenderQuad();
@@ -98,8 +99,8 @@ int main()
 	lightColors.push_back(glm::vec3(0.0f, 1.5f, 0.0f));
 
 	// Load textures
-	GLuint woodTexture      = loadTexture("../../../resources/textures/wood.png");
-	GLuint containerTexture = loadTexture("../../../resources/textures/container2.png");
+	GLuint woodTexture      = loadTexture(FileSystem::getPath("resources/textures/wood.png").c_str());
+	GLuint containerTexture = loadTexture(FileSystem::getPath("resources/textures/container2.png").c_str());
 
 	// Set up floating point framebuffer to render scene to
 	GLuint hdrFBO;
@@ -386,7 +387,7 @@ void RenderCube()
 // This function loads a texture from file. Note: texture loading functions like these are usually 
 // managed by a 'Resource Manager' that manages all resources (like textures, models, audio). 
 // For learning purposes we'll just define it as a utility function.
-GLuint loadTexture(GLchar* path)
+GLuint loadTexture(GLchar const * path)
 {
 	// Generate texture ID and load texture data 
 	GLuint textureID;

src/5.advanced_lighting/8.deferred_shading/deferred_shading.cpp

@@ -17,6 +17,7 @@
 
 // Other Libs
 #include <SOIL.h>
+#include <learnopengl/filesystem.h>
 
 // Properties
 const GLuint SCR_WIDTH = 800, SCR_HEIGHT = 600;
@@ -26,7 +27,7 @@ void key_callback(GLFWwindow* window, int key, int scancode, int action, int mod
 void scroll_callback(GLFWwindow* window, double xoffset, double yoffset);
 void mouse_callback(GLFWwindow* window, double xpos, double ypos);
 void Do_Movement();
-GLuint loadTexture(GLchar* path);
+GLuint loadTexture(GLchar const * path);
 void RenderCube();
 void RenderQuad();
 
@@ -84,7 +85,7 @@ int main()
     glUniform1i(glGetUniformLocation(shaderLightingPass.Program, "gAlbedoSpec"), 2);
 
 	// Models
-	Model cyborg("../../../resources/objects/nanosuit/nanosuit.obj");
+	Model cyborg(FileSystem::getPath("resources/objects/nanosuit/nanosuit.obj").c_str());
 	std::vector<glm::vec3> objectPositions;
     objectPositions.push_back(glm::vec3(-3.0, -3.0, -3.0));
     objectPositions.push_back(glm::vec3(0.0, -3.0, -3.0));
@@ -118,7 +119,7 @@ int main()
 	// 3 textures:
 	// 1. Positions (RGB)
 	// 2. Color (RGB) + Specular (A)
-	// 3. Normals (RGB) 
+	// 3. Normals (RGB)
 	GLuint gBuffer;
     glGenFramebuffers(1, &gBuffer);
     glBindFramebuffer(GL_FRAMEBUFFER, gBuffer);
@@ -144,7 +145,7 @@ int main()
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
     glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
     glFramebufferTexture2D(GL_FRAMEBUFFER, GL_COLOR_ATTACHMENT2, GL_TEXTURE_2D, gAlbedoSpec, 0);
-    // - Tell OpenGL which color attachments we'll use (of this framebuffer) for rendering 
+    // - Tell OpenGL which color attachments we'll use (of this framebuffer) for rendering
     GLuint attachments[3] = { GL_COLOR_ATTACHMENT0, GL_COLOR_ATTACHMENT1, GL_COLOR_ATTACHMENT2 };
     glDrawBuffers(3, attachments);
 	// - Create and attach depth buffer (renderbuffer)
@@ -157,7 +158,7 @@ int main()
 	if (glCheckFramebufferStatus(GL_FRAMEBUFFER) != GL_FRAMEBUFFER_COMPLETE)
 		std::cout << "Framebuffer not complete!" << std::endl;
 	glBindFramebuffer(GL_FRAMEBUFFER, 0);
-	
+
 	glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
 
 	// Game loop
@@ -219,7 +220,7 @@ int main()
             // Then calculate radius of light volume/sphere
             const GLfloat lightThreshold = 5.0; // 5 / 256
             const GLfloat maxBrightness = std::fmaxf(std::fmaxf(lightColors[i].r, lightColors[i].g), lightColors[i].b);
-            GLfloat radius = (-linear + std::sqrtf(linear * linear - 4 * quadratic * (constant - (256.0 / lightThreshold) * maxBrightness))) / (2 * quadratic);
+            GLfloat radius = (-linear + std::sqrt(linear * linear - 4 * quadratic * (constant - (256.0 / lightThreshold) * maxBrightness))) / (2 * quadratic);
             glUniform1f(glGetUniformLocation(shaderLightingPass.Program, ("lights[" + std::to_string(i) + "].Radius").c_str()), radius);
         }
         glUniform3fv(glGetUniformLocation(shaderLightingPass.Program, "viewPos"), 1, &camera.Position[0]);
@@ -298,7 +299,7 @@ void RenderCube()
             // Back face
             -0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f, // Bottom-left
             0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f, // top-right
-            0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f, // bottom-right         
+            0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 1.0f, 0.0f, // bottom-right
             0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 1.0f, 1.0f,  // top-right
             -0.5f, -0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 0.0f, 0.0f,  // bottom-left
             -0.5f, 0.5f, -0.5f, 0.0f, 0.0f, -1.0f, 0.0f, 1.0f,// top-left
@@ -319,10 +320,10 @@ void RenderCube()
             // Right face
             0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f, // top-left
             0.5f, -0.5f, -0.5f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f, // bottom-right
-            0.5f, 0.5f, -0.5f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, // top-right         
+            0.5f, 0.5f, -0.5f, 1.0f, 0.0f, 0.0f, 1.0f, 1.0f, // top-right
             0.5f, -0.5f, -0.5f, 1.0f, 0.0f, 0.0f, 0.0f, 1.0f,  // bottom-right
             0.5f, 0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 1.0f, 0.0f,  // top-left
-            0.5f, -0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, // bottom-left     
+            0.5f, -0.5f, 0.5f, 1.0f, 0.0f, 0.0f, 0.0f, 0.0f, // bottom-left
             // Bottom face
             -0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f, 0.0f, 1.0f, // top-right
             0.5f, -0.5f, -0.5f, 0.0f, -1.0f, 0.0f, 1.0f, 1.0f, // top-left
@@ -333,10 +334,10 @@ void RenderCube()
             // Top face
             -0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f,// top-left
             0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, // bottom-right
-            0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, // top-right     
+            0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 1.0f, 1.0f, // top-right
             0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f, 1.0f, 0.0f, // bottom-right
             -0.5f, 0.5f, -0.5f, 0.0f, 1.0f, 0.0f, 0.0f, 1.0f,// top-left
-            -0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f // bottom-left        
+            -0.5f, 0.5f, 0.5f, 0.0f, 1.0f, 0.0f, 0.0f, 0.0f // bottom-left
         };
         glGenVertexArrays(1, &cubeVAO);
         glGenBuffers(1, &cubeVBO);
@@ -434,4 +435,4 @@ void mouse_callback(GLFWwindow* window, double xpos, double ypos)
 void scroll_callback(GLFWwindow* window, double xoffset, double yoffset)
 {
 	camera.ProcessMouseScroll(yoffset);
-}
+}

src/5.advanced_lighting/9.ssao/ssao.cpp

@@ -19,6 +19,7 @@
 #include <SOIL.h>
 
 #include <random> // necessary for generation of random floats (for sample kernel and noise texture)
+#include <learnopengl/filesystem.h>
 
 // Properties
 const GLuint SCR_WIDTH = 800, SCR_HEIGHT = 600;
@@ -96,7 +97,7 @@ int main()
     glUniform1i(glGetUniformLocation(shaderSSAO.Program, "texNoise"), 2);
 
     // Objects
-    Model nanosuit("../../../resources/objects/nanosuit/nanosuit.obj");
+    Model nanosuit(FileSystem::getPath("resources/objects/nanosuit/nanosuit.obj").c_str());
 
     // Lights
     glm::vec3 lightPos = glm::vec3(2.0, 4.0, -2.0);