Got OpenGL window to render for gamestate. Had to include gl3w.c since it didn't compile to a library, so it's easier just to add it to the project.

src/render.cpp

@@ -0,0 +1,33 @@
+#include "render.hpp"
+
+#include <gl3w/GL/gl3w.h>
+#include <GLFW/glfw3.h>
+#include <stdio.h>
+
+RenderManager::RenderManager(){}
+
+bool RenderManager::Init (uint16_t width, uint16_t height, const char* title){
+	if (!glfwInit()) {
+    printf("[EE] failed to initialize GLFW.\n");
+    return false;
+  }
+
+	glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
+  glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
+	glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);
+
+	auto window = glfwCreateWindow(width, height, title, nullptr, nullptr);
+	if (!window) {
+		printf ("[EE] Could not create window\n");
+		return false;
+	}
+
+	glfwMakeContextCurrent(window);
+  if (gl3wInit()) {
+    printf("[EE] failed to initialize OpenGL\n");
+    return false;
+  }
+
+  printf("[DD] OpenGL %s, GLSL %s\n", glGetString(GL_VERSION), glGetString(GL_SHADING_LANGUAGE_VERSION));
+	return true;
+}