diff --git a/src/main.c++ b/src/main.c++
index 2676dcd..e234d0a 100644
--- a/src/main.c++
+++ b/src/main.c++
@@ -1,5 +1,7 @@
 #include <glad/gles2.h>
 #include <SDL3/SDL.h>
+#define SDL_MAIN_USE_CALLBACKS 1
+#include <SDL3/SDL_main.h>
 
 #include <cstdio>
 #include <ctime>
@@ -7,8 +9,15 @@
 #define WINDOW_WIDTH  128
 #define WINDOW_HEIGHT 128
 
-int main(int argc, char **argv) {
+struct state {
+	SDL_Window *window;
+	SDL_GLContext context;
+	float color;
+};
+
+SDL_AppResult SDL_AppInit(void **appstate, int, char **) {
 	clock_t begin = clock();
+	auto state = new (struct state);
 	
 	SDL_Init(SDL_INIT_VIDEO);
 	SDL_GL_SetAttribute(SDL_GL_DOUBLEBUFFER, 1);
@@ -16,37 +25,74 @@ int main(int argc, char **argv) {
 	SDL_GL_SetAttribute(SDL_GL_CONTEXT_MINOR_VERSION, 0);
 	SDL_GL_SetAttribute(SDL_GL_CONTEXT_PROFILE_MASK, SDL_GL_CONTEXT_PROFILE_ES);
 
-	SDL_Window *window = SDL_CreateWindow("suwi", WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_HIDDEN | SDL_WINDOW_OPENGL /*| SDL_WINDOW_RESIZABLE*/ | SDL_WINDOW_TRANSPARENT);
+	state->window = SDL_CreateWindow("suwi", WINDOW_WIDTH, WINDOW_HEIGHT, SDL_WINDOW_HIDDEN | SDL_WINDOW_OPENGL /*| SDL_WINDOW_RESIZABLE*/ | SDL_WINDOW_TRANSPARENT);
 
-	SDL_GLContext context = SDL_GL_CreateContext(window);
+	state->context = SDL_GL_CreateContext(state->window);
 	
 	int version = gladLoadGLES2((GLADloadfunc) SDL_GL_GetProcAddress);
 	if (version == 0) {
 		puts("error: GLES2 failed to initialize");
-		return 1;
+		return SDL_APP_FAILURE;
 	}
-	fprintf(stderr, "info: ver %u\n", version);
+	fprintf(stderr, "info: GLES%u.%u\n", GLAD_VERSION_MAJOR(version), GLAD_VERSION_MINOR(version));
 
 	glViewport(0, 0, WINDOW_WIDTH, WINDOW_HEIGHT);
-	SDL_ShowWindow(window);
+	SDL_ShowWindow(state->window);
 	
 	fprintf(stderr, "info: init took %lu ms\n", ((clock() - begin) * 1000) / CLOCKS_PER_SEC);
-
-	while (true) {
-		SDL_Event evt;
-		while (SDL_PollEvent(&evt)) {
-			switch (evt.type) {
-				case SDL_EVENT_QUIT:
-					return 0;
-				default:;
-			}
-		}
-		
-		glClearColor(0.5, 0.5, 0.5, 0.0);
-		glClear(GL_COLOR_BUFFER_BIT);
-		
-		SDL_GL_SwapWindow(window);
-	}
 	
-	return 0;
+	*appstate = state;
+	return SDL_APP_CONTINUE;
+}
+
+SDL_AppResult SDL_AppEvent(void *, SDL_Event *evt) {
+	switch (evt->type) {
+		case SDL_EVENT_QUIT:
+			return SDL_APP_SUCCESS;
+		
+		case SDL_EVENT_KEY_DOWN:
+		case SDL_EVENT_KEY_UP:
+			break;
+
+		case SDL_EVENT_MOUSE_MOTION:
+		case SDL_EVENT_MOUSE_BUTTON_DOWN:
+		case SDL_EVENT_MOUSE_BUTTON_UP:
+		case SDL_EVENT_MOUSE_WHEEL:
+			break;
+
+		case SDL_EVENT_WINDOW_SHOWN:
+		case SDL_EVENT_WINDOW_HIDDEN:
+		case SDL_EVENT_WINDOW_MINIMIZED:
+		case SDL_EVENT_WINDOW_MAXIMIZED:
+		case SDL_EVENT_WINDOW_RESTORED:
+		case SDL_EVENT_WINDOW_MOVED:
+		case SDL_EVENT_WINDOW_RESIZED:
+		case SDL_EVENT_WINDOW_MOUSE_ENTER:
+		case SDL_EVENT_WINDOW_MOUSE_LEAVE:
+		case SDL_EVENT_WINDOW_FOCUS_GAINED:
+		case SDL_EVENT_WINDOW_FOCUS_LOST:
+		case SDL_EVENT_WINDOW_CLOSE_REQUESTED:
+			break;
+
+		case SDL_EVENT_CLIPBOARD_UPDATE:
+			break;
+		
+		default:
+			fprintf(stderr, "info: unknown event %x\n", evt->type);
+	}
+
+	return SDL_APP_CONTINUE;
+}
+
+SDL_AppResult SDL_AppIterate(void *appstate) {
+	auto state = (struct state *) appstate;
+	glClearColor(0.5, 0.5, 0.5, 0.0);
+	glClear(GL_COLOR_BUFFER_BIT);
+	
+	SDL_GL_SwapWindow(state->window);
+	return SDL_APP_CONTINUE;
+}
+
+void SDL_AppQuit(void *, SDL_AppResult) {
+	;
 }