Now rendering fonts separately from the scene render.

32-text-rendering/src/main.cpp

@@ -119,8 +119,18 @@ void update(GLFWwindow* window, Scene& scene) {
   scene.update();
 }
 
-void render(GLFWwindow* window, Scene& scene) {
+void render(GLFWwindow* window, Scene& scene, Text& text) {
   scene.render(window);
+  float scale = 0.5f;
+
+  float X_height = text.characters['X'].size.y * scale + 0.5f;
+  float y = 0.0f;
+
+  for(int i = 0; i < 100; i++) {
+    y += X_height;
+    text.render(std::format("y={}", y), 25.0f, y, scale, glm::vec3(1.0, 0.0f, 0.0f));
+  }
+
   glfwSwapBuffers(window);
 }
 
@@ -134,12 +144,13 @@ int main() {
 
   auto window = create_window();
   auto scene = setup();
+  Text text;
 
   glfwSetWindowUserPointer(window, &scene);
 
   while(!glfwWindowShouldClose(window)) {
     update(window, scene);
-    render(window, scene);
+    render(window, scene, text);
   }
 
   quit(window, scene);

32-text-rendering/src/scene.cpp

@@ -57,9 +57,7 @@ void Scene::render(GLFWwindow* window) {
     draw_thing(with_shader, thing);
   }
 
-  text.render_text("This is A Test", 25.0f, 25.0f, 1.0f, glm::vec3(0.5, 0.8f, 0.2f));
-
-  // render_skybox(projection);
+  render_skybox(projection);
 
   framebuffer.commit();
 

32-text-rendering/src/scene.hpp

@@ -46,7 +46,6 @@ struct Scene {
   unsigned int skyboxVBO = UINT_MAX;
   unsigned int skybox_texture_id = UINT_MAX;
   bool reflect_on = false;
-  Text text;
 
   Scene(components::Scene& config):
     shader{config.shader},
@@ -91,7 +90,6 @@ struct Scene {
 
     framebuffer.init();
     screen.init();
-    text.load_font();
     init_skybox();
   }
 

32-text-rendering/src/text.cpp

@@ -8,7 +8,7 @@
 #include <ft2build.h>
 #include FT_FREETYPE_H
 
-void Text::render_text(const std::string& text, float x, float y, float scale, glm::vec3 color) {
+void Text::render(const std::string& text, float x, float y, float scale, glm::vec3 color) {
   text_shader.use();
   glm::mat4 projection = glm::ortho(0.0f, static_cast<float>(SCR_WIDTH), 0.0f, static_cast<float>(SCR_HEIGHT));
   text_shader.setMat4("projection", projection);

32-text-rendering/src/text.hpp

@@ -12,12 +12,16 @@ struct Character {
 };
 
 struct Text {
+  std::string font{"assets/fonts/text.ttf"};
   Shader text_shader{{"shaders/32-text.vert.glsl", "shaders/32-text.frag.glsl", ""}};
   unsigned int text_vao = UINT_MAX;
   unsigned int text_vbo = UINT_MAX;
-  std::string font{"assets/fonts/text.ttf"};
   std::unordered_map<unsigned char, Character> characters;
 
-  void render_text(const std::string& text, float x, float y, float scale, glm::vec3 color);
+  Text() {
+    load_font();
+  }
+
+  void render(const std::string& text, float x, float y, float scale, glm::vec3 color);
   void load_font();
 };