From 4c94e0f047a9583286d58036a4a92d46dc810a7f Mon Sep 17 00:00:00 2001
From: Cat Flynn <me@ktyl.dev>
Date: Sun, 23 Jul 2023 18:21:44 +0200
Subject: [PATCH] feat: add OpenGL window on Windows

---
 CMakeLists.txt | 7 ++++++-
 hello.cpp      | 8 +++++++-
 2 files changed, 13 insertions(+), 2 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 84a4227..201cc05 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,11 +1,15 @@
 cmake_minimum_required(VERSION 3.27)
-project(HelloGLFW)
+project(HelloOpenGL)
 
 # Define platform-specific paths and libraries
 if(WIN32)
+    # GLFW
     set(GLFW_PATH "C:/libs/glfw-3.3.8.bin.WIN64")
     include_directories(${GLFW_PATH}/include)
     link_directories(${GLFW_PATH}/lib-vc2022)
+
+    # OpenGL
+    find_package(OpenGL REQUIRED)
 elseif(UNIX OR APPLE)
     message(FATAL_ERROR "Linux and macOS platforms are not supported yet.")
 endif()
@@ -14,4 +18,5 @@ add_executable(${PROJECT_NAME} hello.cpp)
 
 if(WIN32)
     target_link_libraries(${PROJECT_NAME} glfw3)
+    target_link_libraries(${PROJECT_NAME} OpenGL::GL)
 endif()
\ No newline at end of file
diff --git a/hello.cpp b/hello.cpp
index ff9c8f7..ea8bb5f 100644
--- a/hello.cpp
+++ b/hello.cpp
@@ -21,13 +21,14 @@
 // Set startup project in Solution Explorer
 
 #include <GLFW/glfw3.h>
+#include <gl/GL.h>
 
 int main()
 {
     if (!glfwInit())
         return -1;
 
-    GLFWwindow* window = glfwCreateWindow(640, 480, "Hello GLFW", NULL, NULL);
+    GLFWwindow* window = glfwCreateWindow(640, 480, "Hello GL", NULL, NULL);
     if (!window)
     {
         glfwTerminate();
@@ -38,6 +39,11 @@ int main()
 
     while (!glfwWindowShouldClose(window))
     {
+        glClearColor(1.0f, 0.0f, 0.0f, 1.0f);
+        glClear(GL_COLOR_BUFFER_BIT);
+
+        glfwSwapBuffers(window);
+
         glfwPollEvents();
     }