using renderer, shader not working

glonkers.c

@@ -14,6 +14,20 @@
 #include <EGL/egl.h>
 #include <wayland-egl.h>
 
+struct timespec program_start;
+
+void init_timer() {
+    clock_gettime(CLOCK_MONOTONIC, &program_start);
+}
+
+double time_since_start() {
+    struct timespec now;
+    clock_gettime(CLOCK_MONOTONIC, &now);
+
+    return (now.tv_sec - program_start.tv_sec) +
+           (now.tv_nsec - program_start.tv_nsec) / 1e9;
+}
+
 struct client_state {
     int width, height;
     /* Globals */
@@ -206,6 +220,13 @@ static void egl_init(struct client_state *state) {
 int
 main(int argc, char *argv[])
 {
+    char *shader_path = NULL;
+    if (argc >= 2) {
+        shader_path = argv[1];
+    } else {
+        printf("need to supply path to shader\n");
+        exit(1);
+    }
     int width = 700, height = 450;
     struct client_state state = { width, height, 0 };
     state.wl_display = wl_display_connect(NULL);
@@ -223,9 +244,99 @@ main(int argc, char *argv[])
 
 	egl_init(&state);
 
+    Renderer renderer = new_renderer();
+
     while (wl_display_dispatch(state.wl_display)) {
+        double time = time_since_start();
+        render(&renderer, state.width, state.height, time, shader_path, false);
 	    eglSwapBuffers(state.egl_display, state.egl_surface);
     }
 
     return 0;
 }
+
+//
+//_Atomic bool running = true;
+//
+//void intHandler(int dummy) {
+//    printf("exiting\n");
+//    running = false;
+//    fclose(stdin);
+//}
+//
+//bool reload_shader = false;
+//
+///// reads stdin on a separate thread.
+//void *read_stdin(void *ptr) {
+//    char buff[10];
+//    while (running) {
+//        fgets(buff, 10, stdin);
+//        if (strcmp(buff, "r\n") == 0) {
+//            printf("reloading shader\n");
+//            reload_shader = true;
+//        }
+//    }
+//    return NULL;
+//}
+//
+//int main(int argc, char *argv[]) {
+//    signal(SIGINT, intHandler);
+//    pthread_t stdin_thread;
+//    pthread_create( &stdin_thread, NULL, read_stdin, NULL);
+//
+//    init_timer();
+//
+//    printf("Good Morning 🍵\n");
+//    SDL_Init(SDL_INIT_VIDEO);
+//    SDL_SetHint(SDL_HINT_OPENGL_ES_DRIVER, "1");
+//    SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK,
+//        SDL_GL_CONTEXT_PROFILE_ES);
+//    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MAJOR_VERSION, 3);
+//    SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
+//    SDL_Window* window = SDL_CreateWindow("SDL3 OpenGL Cube",
+//    800, 600, SDL_WINDOW_OPENGL | SDL_WINDOW_RESIZABLE);
+//    if (!window) {
+//        printf("CreateWindow Error: %s\n", SDL_GetError());
+//        SDL_Quit();
+//        return 1;
+//    }
+//    
+//    SDL_GLContext glContext = SDL_GL_CreateContext(window);
+//
+//    if (!glContext) {
+//        printf("GL Context Error: %s\n", SDL_GetError());
+//        SDL_DestroyWindow(window);
+//        SDL_Quit();
+//        return 1;
+//    }
+//
+//    Renderer renderer = new_renderer();
+//
+//    SDL_Event e;
+//    int w, h;
+//    while (running) {
+//        while (SDL_PollEvent(&e)) {
+//            if (e.type == SDL_EVENT_QUIT) running = false;
+//            if (e.type == SDL_EVENT_WINDOW_RESIZED) {
+//                SDL_GetWindowSize(window, &w, &h);
+//            }
+//        }
+//
+//        char *shader_path = NULL;
+//        if (argc >= 2) {
+//            shader_path = argv[1];
+//        } else {
+//            printf("need to supply path to shader\n");
+//            exit(1);
+//        }
+//
+//        double time = time_since_start();
+//        render(&renderer, w, h, time, shader_path, reload_shader);
+//        if (reload_shader) reload_shader = false;
+//
+//        SDL_GL_SwapWindow(window);
+//    }
+//
+//    pthread_join(stdin_thread, NULL);
+//}
+//