Support per surface frame events

This fixes tearing with multi head.

clients/gears.c

@@ -334,7 +334,7 @@ redraw_handler(struct window *window, void *data)
 }
 
 static void
-frame_callback(void *data, uint32_t time)
+frame_callback(struct wl_surface *surface, void *data, uint32_t time)
 {
 	struct gears *gears = data;
 
@@ -344,6 +344,7 @@ frame_callback(void *data, uint32_t time)
 
 	window_schedule_redraw(gears->window);
 	wl_display_frame_callback(display_get_display(gears->d),
+				  window_get_wl_surface(gears->window),
 				  frame_callback, gears);
 }
 
@@ -412,6 +413,7 @@ gears_create(struct display *display)
 
 	draw_gears(gears);
 	wl_display_frame_callback(display_get_display(gears->d),
+				  window_get_wl_surface(gears->window),
 				  frame_callback, gears);
 
 	return gears;

clients/resizor.c

@@ -49,7 +49,7 @@ struct resizor {
 };
 
 static void
-frame_callback(void *data, uint32_t time)
+frame_callback(struct wl_surface *surface, void *data, uint32_t time)
 {
 	struct resizor *resizor = data;
 	double force, height;
@@ -107,6 +107,7 @@ resizor_draw(struct resizor *resizor)
 
 	if (fabs(resizor->height.previous - resizor->height.target) > 0.1) {
 		wl_display_frame_callback(display_get_display(resizor->display),
+					  window_get_wl_surface(resizor->window),
 					  frame_callback, resizor);
 	}
 }
@@ -140,11 +141,11 @@ key_handler(struct window *window, struct input *input, uint32_t time,
 	switch (sym) {
 	case XK_Down:
 		resizor->height.target = 400;
-		frame_callback(resizor, 0);
+		frame_callback(window_get_wl_surface(window), resizor, 0);
 		break;
 	case XK_Up:
 		resizor->height.target = 200;
-		frame_callback(resizor, 0);
+		frame_callback(window_get_wl_surface(window), resizor, 0);
 		break;
 	}
 }

clients/simple-client.c

@@ -216,7 +216,7 @@ create_surface(struct window *window)
 }
 
 static void
-redraw(void *data, uint32_t time)
+redraw(struct wl_surface *surface, void *data, uint32_t time)
 {
 	struct window *window = data;
 	static const GLfloat verts[3][2] = {
@@ -267,7 +267,9 @@ redraw(void *data, uint32_t time)
 	glFlush();
 
 	eglSwapBuffers(window->display->egl.dpy, window->egl_surface);
-	wl_display_frame_callback(window->display->display, redraw, window);
+	wl_display_frame_callback(window->display->display,
+				  window->surface,
+				  redraw, window);
 }
 
 static void
@@ -315,7 +317,8 @@ main(int argc, char **argv)
 	create_surface(&window);
 	init_gl(&window);
 
-	wl_display_frame_callback(display.display, redraw, &window);
+	wl_display_frame_callback(display.display, window.surface,
+				  redraw, &window);
 
 	wl_display_get_fd(display.display, event_mask_update, &display);
 	while (true)

clients/smoke.c

@@ -173,7 +173,7 @@ static void render(struct smoke *smoke)
 }
 
 static void
-frame_callback(void *data, uint32_t time)
+frame_callback(struct wl_surface *surface, void *data, uint32_t time)
 {
 	struct smoke *smoke = data;
 
@@ -201,6 +201,7 @@ frame_callback(void *data, uint32_t time)
 
 	window_damage(smoke->window, 0, 0, smoke->width, smoke->height);
 	wl_display_frame_callback(display_get_display(smoke->display),
+				  window_get_wl_surface(smoke->window),
 				  frame_callback, smoke);
 }
 
@@ -288,6 +289,7 @@ int main(int argc, char *argv[])
 
 	window_set_user_data(smoke.window, &smoke);
 	wl_display_frame_callback(display_get_display(d),
+				  window_get_wl_surface(smoke.window),
 				  frame_callback, &smoke);
 
 	display_run(d);

clients/window.c

@@ -792,6 +792,12 @@ window_get_surface(struct window *window)
 	return cairo_surface_reference(window->cairo_surface);
 }
 
+struct wl_surface *
+window_get_wl_surface(struct window *window)
+{
+	return window->surface;
+}
+
 static int
 get_pointer_location(struct window *window, int32_t x, int32_t y)
 {

clients/window.h

@@ -157,6 +157,9 @@ window_damage(struct window *window, int32_t x, int32_t y,
 cairo_surface_t *
 window_get_surface(struct window *window);
 
+struct wl_surface *
+window_get_wl_surface(struct window *window);
+
 void
 window_flush(struct window *window);