From f0cb3719556a1c91b1ca35223cd2dc2c38ead4cc Mon Sep 17 00:00:00 2001
From: PlexSheep <software@cscherr.de>
Date: Wed, 18 Oct 2023 17:03:13 +0200
Subject: [PATCH] linker hell

---
 CMakeLists.txt   |  1 -
 src/graphics.cpp | 45 +++++++++++++++++----------------------------
 src/graphics.hpp | 24 +++++++++++++++++++++++-
 src/main.cpp     | 21 ++++++++++++---------
 4 files changed, 52 insertions(+), 39 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 5f57cb5..f161bb5 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -5,7 +5,6 @@ add_subdirectory(lib/glfw)
 
 include_directories(
     include/
-    lib/glad/include/
     lib/glfw/include/
 )
 file(
diff --git a/src/graphics.cpp b/src/graphics.cpp
index 303a0aa..2161ac7 100644
--- a/src/graphics.cpp
+++ b/src/graphics.cpp
@@ -1,23 +1,28 @@
-#include <glad/glad.c>
-// glad must be loaded before GLFW
-#include <GLFW/glfw3.h>
-
 #include "graphics.hpp"
 
 #include <iostream>
-#include <unistd.h>
+#include <fstream>
+
+using namespace std;
+
+string ShaderProgram::baseName() {
+  switch (this->base) {
+    case Empty:
+      return "Empty";
+    case Triangle:
+      return "Triangle";
+  }
+}
+
+ShaderProgram::ShaderProgram(Base base, string vertexFile, string fragFile) {
 
-void processInput(GLFWwindow *window) {
-  // if user presses ESC, close the window
-  if (glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS)
-    glfwSetWindowShouldClose(window, true);
 }
 
 void framebuffer_size_callback(GLFWwindow *window, int width, int height) {
   glViewport(0, 0, width, height);
 }
 
-int mainWindow() {
+int mainWindow(ShaderProgram shaderProgram) {
   /* graphics stuff */
   glfwInit();
   glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
@@ -40,24 +45,8 @@ int mainWindow() {
 
   glfwSetFramebufferSizeCallback(window, framebuffer_size_callback);
 
-  float vertices[] = {-0.5f, -0.5f, 0.0f, 0.5f, -0.5f, 0.0f, 0.0f, 0.5f, 0.0f};
-
-  unsigned int VBO;
-
-  glGenBuffers(1, &VBO);
-  glBindBuffer(GL_ARRAY_BUFFER, VBO);
-  glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
-
-  while (!glfwWindowShouldClose(window)) {
-    processInput(window);
-
-    glClearColor(0.8f, 0.4f, 0.1f, 1.0f);
-    glClear(GL_COLOR_BUFFER_BIT);
-
-    glfwSwapBuffers(window);
-    glfwPollEvents();
-  }
+  int result = shaderProgram.run();
 
   glfwTerminate();
-  return 0;
+  return result;
 }
diff --git a/src/graphics.hpp b/src/graphics.hpp
index 1975dcf..f7d826f 100644
--- a/src/graphics.hpp
+++ b/src/graphics.hpp
@@ -1 +1,23 @@
-int mainWindow();
+#ifndef GRAPHICS_HPP
+#define GRAPHICS_HPP
+#include <glad/glad.c>
+// glad must be loaded before GLFW
+#include <GLFW/glfw3.h>
+
+#include <iostream>
+#include <string>
+
+class ShaderProgram {
+public:
+  enum Base { Empty, Triangle };
+  std::string baseName();
+  ShaderProgram(Base base, std::string vertexFile, std::string fragFile);
+  int run();
+
+protected:
+  unsigned int vertex;
+  unsigned int frag;
+  Base base;
+};
+int mainWindow(ShaderProgram* shaderProgramm);
+#endif
diff --git a/src/main.cpp b/src/main.cpp
index fb420e7..7a25611 100644
--- a/src/main.cpp
+++ b/src/main.cpp
@@ -3,7 +3,6 @@
 #include <boost/program_options/positional_options.hpp>
 #include <boost/program_options/variables_map.hpp>
 
-#include <exception>
 #include <iostream>
 
 #include "graphics.hpp"
@@ -19,11 +18,9 @@ int main(int argc, char **argv) {
 
   /* Parsing CLI Arguments */
   po::options_description desc("Available options");
-  desc.add_options()
-    ("help,h", "show help")
-    ("verbose,v", "more verbose output")
-    ("vert", po::value<string>()->required(), "vertex shader file")
-    ("frag", po::value<string>()->required(), "fragment shader file");
+  desc.add_options()("help,h", "show help")("verbose,v", "more verbose output")(
+      "vert", po::value<string>()->required(), "vertex shader file")(
+      "frag", po::value<string>()->required(), "fragment shader file");
 
   /* unused for now */
   po::positional_options_description pdesc;
@@ -55,15 +52,21 @@ int main(int argc, char **argv) {
     printf("verbose!");
   }
 
+  /* setup the shader program */
+  ShaderProgram* shaderProgram = new ShaderProgram(
+      ShaderProgram::Base::Empty, vm["vert"].as<string>(), vm["frag"].as<string>());
+
   /* Run our main program */
-  int result = mainWindow();
+  int result = mainWindow(shaderProgram);
 
   return result;
 }
 
 void help(char *prog, po::options_description desc) {
   cout << "Usage:" << endl
-       << prog << " [-vh] [--vert] shaders/vertex.glsl [--frag] shaders/fragment.glsl"
-       << endl << endl
+       << prog
+       << " [-vh] [--vert] shaders/vertex.glsl [--frag] shaders/fragment.glsl"
+       << endl
+       << endl
        << desc << endl;
 }