clean opengl objects

src/forge.c

@@ -169,7 +169,7 @@ static void free_files(File *common_shader_code, File *fragment_shaders,
 
 static void error_callback(int error, const char *description) {
   log_error("[GLFW] %d: %s", error, description);
-  window_close(0, true);
+  window_terminate();
   exit(EXIT_FAILURE);
 }
 
@@ -178,7 +178,7 @@ static void key_callback(Window *window, int key,
                          __attribute__((unused)) int mods) {
   if (window_escape_key(key, action)) {
     // close window on escape key
-    window_close(window, false);
+    window_close(window);
   } else if (window_char_key(key, action, 82)) {
     // R: randomize
     randomize_context_state();
@@ -235,12 +235,7 @@ void forge_run(Parameters params) {
   init_context(params);
 
   if (program.error) {
-    if (window_output != NULL) {
-      window_close(window_output, true);
-    }
-    if (window_monitor != NULL) {
-      window_close(window_monitor, true);
-    }
+    window_terminate();
     exit(EXIT_FAILURE);
   }
 
@@ -253,16 +248,25 @@ void forge_run(Parameters params) {
     loop(params.hot_reload, &common_shader_code, fragment_shaders, &timer);
   }
 
+  shaders_free(program);
+
+  if (window_output != NULL) {
+    window_use(window_output, &context);
+
+    shaders_free_window(program, false);
+  }
+
+  if (window_monitor != NULL) {
+    window_use(window_monitor, &context);
+
+    shaders_free_window(program, params.output);
+  }
+
+  window_terminate();
+
+  free_context();
+
   free_files(&common_shader_code, fragment_shaders, frag_count);
 
   config_file_free(shader_config);
-
-  if (window_output != NULL) {
-    window_close(window_output, true);
-  }
-  if (window_monitor != NULL) {
-    window_close(window_monitor, true);
-  }
-
-  free_context();
 }

src/shaders.c

@@ -440,3 +440,19 @@ void shaders_compute(ShaderProgram program, Context context, bool monitor,
               monitor ? program.frag_monitor_index : program.frag_output_index,
               true, context);
 }
+
+void shaders_free(ShaderProgram program) {
+  unsigned int i;
+
+  for (i = 0; i < program.frag_count; i++) {
+    glDeleteProgram(program.programs[i]);
+  }
+
+  glDeleteFramebuffers(program.frag_count, program.frame_buffers);
+  glDeleteTextures(program.tex_count, program.textures);
+  glDeleteBuffers(1, &program.vertex_buffer);
+}
+
+void shaders_free_window(ShaderProgram program, bool secondary) {
+  glDeleteVertexArrays(1, &program.vertex_array[secondary ? 1 : 0]);
+}

src/shaders.h

@@ -12,4 +12,8 @@ void shaders_update(ShaderProgram program, File *fragment_shaders,
 void shaders_compute(ShaderProgram program, Context context, bool monitor,
                      bool output_only);
 
+void shaders_free(ShaderProgram program);
+
+void shaders_free_window(ShaderProgram program, bool secondary);
+
 #endif /* SHADERS_H */

src/window.c

@@ -87,6 +87,11 @@ void window_startup(void (*error_callback)(int, const char *)) {
   init_glfw(error_callback);
 }
 
+void window_terminate() {
+  log_info("[GLFW] Terminating library...");
+  glfwTerminate();
+}
+
 Window *window_init(char *title, unsigned char monitor_index, bool windowed,
                     Window *shared_context,
                     void (*key_callback)(Window *, int, int, int, int)) {
@@ -120,15 +125,10 @@ void window_use(Window *window, Context *context) {
   glfwGetFramebufferSize(window, &context->width, &context->height);
 }
 
-void window_close(Window *window, bool hard) {
-  if (hard) {
-    log_info("[GLFW] Terminating library...");
-    glfwTerminate();
-  } else {
+void window_close(Window *window) {
   log_info("[GLFW] Closing window...");
   glfwSetWindowShouldClose(window, GLFW_TRUE);
 }
-}
 
 bool window_should_close(Window *window) {
   return glfwWindowShouldClose(window) == GLFW_TRUE;

src/window.h

@@ -5,6 +5,8 @@
 
 void window_startup(void (*error_callback)(int, const char *));
 
+void window_terminate();
+
 Window *window_init(char *title, unsigned char monitor_index, bool windowed,
                     Window *shared_context,
                     void (*key_callback)(Window *, int, int, int, int));
@@ -19,7 +21,7 @@ void window_refresh(Window *window);
 
 void window_events();
 
-void window_close(Window *window, bool hard);
+void window_close(Window *window);
 
 bool window_should_close(Window *window);