Add full refresh rate support to custom modes

backend/drm/drm.c

@@ -452,8 +452,7 @@ static bool wlr_drm_connector_set_mode(struct wlr_output *output,
 		crtc->cursor ? crtc->cursor - drm->cursor_planes : -1);
 
 	conn->state = WLR_DRM_CONN_CONNECTED;
-	conn->output.current_mode = mode;
+	wlr_output_update_mode(&conn->output, mode);
-	wlr_output_update_size(&conn->output, mode->width, mode->height);
 
 	// Since realloc_crtcs can deallocate planes on OTHER outputs,
 	// we actually need to reinitalise any than has changed

backend/headless/backend.c

@@ -2,19 +2,23 @@
 #include <EGL/egl.h>
 #include <EGL/eglext.h>
 #include <wlr/util/log.h>
+#include <wlr/interfaces/wlr_output.h>
 #include "backend/headless.h"
 #include "glapi.h"
 
 static bool backend_start(struct wlr_backend *wlr_backend) {
 	struct wlr_headless_backend *backend =
 		(struct wlr_headless_backend *)wlr_backend;
-	wlr_log(L_INFO, "Initializating headless backend");
+	wlr_log(L_INFO, "Starting headless backend");
 
-	// TODO
+	struct wlr_headless_backend_output *output;
-	for (size_t i = 0; i < 1; ++i) {
+	wl_list_for_each(output, &backend->outputs, link) {
-		wlr_headless_add_output(&backend->backend, 1280, 720);
+		wl_event_source_timer_update(output->frame_timer, output->frame_delay);
+		wlr_output_create_global(&output->wlr_output, backend->display);
+		wl_signal_emit(&backend->backend.events.output_add, &output->wlr_output);
 	}
 
+	backend->started = true;
 	return true;
 }
 
@@ -27,7 +31,10 @@ static void backend_destroy(struct wlr_backend *wlr_backend) {
 
 	wl_list_remove(&backend->display_destroy.link);
 
-	// TODO: destroy outputs
+	struct wlr_headless_backend_output *output, *tmp;
+	wl_list_for_each_safe(output, tmp, &backend->outputs, link) {
+		wlr_output_destroy(&output->wlr_output);
+	}
 
 	wlr_egl_finish(&backend->egl);
 	free(backend);
@@ -64,7 +71,6 @@ static bool egl_get_config(EGLDisplay disp, EGLConfig *out) {
 
 	static const EGLint attribs[] = {
 		EGL_SURFACE_TYPE, EGL_PBUFFER_BIT,
-		EGL_BUFFER_SIZE, 32,
 		EGL_ALPHA_SIZE, 0,
 		EGL_BLUE_SIZE, 8,
 		EGL_GREEN_SIZE, 8,
@@ -164,3 +170,7 @@ struct wlr_backend *wlr_headless_backend_create(struct wl_display *display) {
 
 	return &backend->backend;
 }
+
+bool wlr_backend_is_headless(struct wlr_backend *backend) {
+	return backend->impl == &backend_impl;
+}

backend/headless/output.c

@@ -6,6 +6,41 @@
 #include <wlr/util/log.h>
 #include "backend/headless.h"
 
+static EGLSurface egl_create_surface(struct wlr_egl *egl, unsigned int width,
+		unsigned int height) {
+	EGLint attribs[] = {EGL_WIDTH, width, EGL_HEIGHT, height, EGL_NONE};
+
+	EGLSurface surf = eglCreatePbufferSurface(egl->display, egl->config, attribs);
+	if (surf == EGL_NO_SURFACE) {
+		wlr_log(L_ERROR, "Failed to create EGL surface: %s", egl_error());
+		return EGL_NO_SURFACE;
+	}
+	return surf;
+}
+
+static bool output_set_custom_mode(struct wlr_output *wlr_output, int32_t width,
+		int32_t height, int32_t refresh) {
+	struct wlr_headless_backend_output *output =
+		(struct wlr_headless_backend_output *)wlr_output;
+	struct wlr_headless_backend *backend = output->backend;
+
+	if (output->egl_surface) {
+		eglDestroySurface(backend->egl.display, output->egl_surface);
+	}
+
+	output->egl_surface = egl_create_surface(&backend->egl, width, height);
+	if (output->egl_surface == EGL_NO_SURFACE) {
+		wlr_log(L_ERROR, "Failed to recreate EGL surface");
+		wlr_output_destroy(wlr_output);
+		return false;
+	}
+
+	output->frame_delay = 1000000 / refresh;
+
+	wlr_output_update_custom_mode(&output->wlr_output, width, height, refresh);
+	return true;
+}
+
 static void output_transform(struct wlr_output *wlr_output,
 		enum wl_output_transform transform) {
 	struct wlr_headless_backend_output *output =
@@ -40,7 +75,7 @@ static void output_destroy(struct wlr_output *wlr_output) {
 }
 
 static const struct wlr_output_impl output_impl = {
-	//.set_custom_mode = output_set_custom_mode,
+	.set_custom_mode = output_set_custom_mode,
 	.transform = output_transform,
 	.destroy = output_destroy,
 	.make_current = output_make_current,
@@ -50,22 +85,10 @@ static const struct wlr_output_impl output_impl = {
 static int signal_frame(void *data) {
 	struct wlr_headless_backend_output *output = data;
 	wl_signal_emit(&output->wlr_output.events.frame, &output->wlr_output);
-	wl_event_source_timer_update(output->frame_timer, 16);
+	wl_event_source_timer_update(output->frame_timer, output->frame_delay);
 	return 0;
 }
 
-static EGLSurface egl_create_surface(struct wlr_egl *egl, unsigned int width,
-		unsigned int height) {
-	EGLint attribs[] = {EGL_WIDTH, width, EGL_HEIGHT, height, EGL_NONE};
-
-	EGLSurface surf = eglCreatePbufferSurface(egl->display, egl->config, attribs);
-	if (surf == EGL_NO_SURFACE) {
-		wlr_log(L_ERROR, "Failed to create EGL surface: %s", egl_error());
-		return EGL_NO_SURFACE;
-	}
-	return surf;
-}
-
 struct wlr_output *wlr_headless_add_output(struct wlr_backend *wlr_backend,
 		unsigned int width, unsigned int height) {
 	struct wlr_headless_backend *backend =
@@ -83,11 +106,15 @@ struct wlr_output *wlr_headless_add_output(struct wlr_backend *wlr_backend,
 
 	output->egl_surface = egl_create_surface(&backend->egl, width, height);
 	if (output->egl_surface == EGL_NO_SURFACE) {
-		// TODO: cleanup
+		wlr_log(L_ERROR, "Failed to create EGL surface");
-		return NULL;
+		goto error;
 	}
 
-	wlr_output_update_size(wlr_output, width, height);
+	output_set_custom_mode(wlr_output, width, height, 60*1000);
+	strncpy(wlr_output->make, "headless", sizeof(wlr_output->make));
+	strncpy(wlr_output->model, "headless", sizeof(wlr_output->model));
+	snprintf(wlr_output->name, sizeof(wlr_output->name), "HEADLESS-%d",
+		wl_list_length(&backend->outputs) + 1);
 
 	if (!eglMakeCurrent(output->backend->egl.display,
 			output->egl_surface, output->egl_surface,
@@ -104,9 +131,13 @@ struct wlr_output *wlr_headless_add_output(struct wlr_backend *wlr_backend,
 	output->frame_timer = wl_event_loop_add_timer(ev, signal_frame, output);
 
 	wl_list_insert(&backend->outputs, &output->link);
+
+	if (backend->started) {
+		wl_event_source_timer_update(output->frame_timer, output->frame_delay);
 		wlr_output_create_global(wlr_output, backend->display);
 		wl_signal_emit(&backend->backend.events.output_add, wlr_output);
-	wl_event_source_timer_update(output->frame_timer, 16);
+	}
+
 	return wlr_output;
 
 error:

backend/wayland/output.c

@@ -32,7 +32,7 @@ static bool wlr_wl_output_set_custom_mode(struct wlr_output *_output,
 		int32_t width, int32_t height, int32_t refresh) {
 	struct wlr_wl_backend_output *output = (struct wlr_wl_backend_output *)_output;
 	wl_egl_window_resize(output->egl_window, width, height, 0, 0);
-	wlr_output_update_size(&output->wlr_output, width, height);
+	wlr_output_update_custom_mode(&output->wlr_output, width, height, 0);
 	return true;
 }
 
@@ -229,7 +229,7 @@ static void xdg_toplevel_handle_configure(void *data, struct zxdg_toplevel_v6 *x
 	}
 	// loop over states for maximized etc?
 	wl_egl_window_resize(output->egl_window, width, height, 0, 0);
-	wlr_output_update_size(&output->wlr_output, width, height);
+	wlr_output_update_custom_mode(&output->wlr_output, width, height, 0);
 }
 
 static void xdg_toplevel_handle_close(void *data, struct zxdg_toplevel_v6 *xdg_toplevel) {
@@ -260,7 +260,7 @@ struct wlr_output *wlr_wl_output_create(struct wlr_backend *_backend) {
 	wlr_output_init(&output->wlr_output, &backend->backend, &output_impl);
 	struct wlr_output *wlr_output = &output->wlr_output;
 
-	wlr_output_update_size(wlr_output, 1280, 720);
+	wlr_output_update_custom_mode(wlr_output, 1280, 720, 0);
 	strncpy(wlr_output->make, "wayland", sizeof(wlr_output->make));
 	strncpy(wlr_output->model, "wayland", sizeof(wlr_output->model));
 	snprintf(wlr_output->name, sizeof(wlr_output->name), "WL-%d",

backend/x11/backend.c

@@ -117,7 +117,8 @@ static bool handle_x11_event(struct wlr_x11_backend *x11, xcb_generic_event_t *e
 	case XCB_CONFIGURE_NOTIFY: {
 		xcb_configure_notify_event_t *ev = (xcb_configure_notify_event_t *)event;
 
-		wlr_output_update_size(&output->wlr_output, ev->width, ev->height);
+		wlr_output_update_custom_mode(&output->wlr_output, ev->width,
+			ev->height, 0);
 
 		// Move the pointer to its new location
 		xcb_query_pointer_cookie_t cookie =

include/backend/headless.h

@@ -11,6 +11,7 @@ struct wlr_headless_backend {
 	struct wl_display *display;
 	struct wl_list outputs;
 	struct wl_listener display_destroy;
+	bool started;
 };
 
 struct wlr_headless_backend_output {
@@ -21,6 +22,7 @@ struct wlr_headless_backend_output {
 
 	void *egl_surface;
 	struct wl_event_source *frame_timer;
+	int frame_delay; // ms
 };
 
 #endif

include/wlr/backend/headless.h

@@ -9,5 +9,6 @@ struct wlr_output *wlr_headless_add_output(struct wlr_backend *backend,
 	unsigned int width, unsigned int height);
 struct wlr_input_device *wlr_headless_add_input(struct wlr_backend *backend,
 	enum wlr_input_device_type type);
+bool wlr_backend_is_headless(struct wlr_backend *backend);
 
 #endif

include/wlr/interfaces/wlr_output.h

@@ -28,8 +28,10 @@ struct wlr_output_impl {
 void wlr_output_init(struct wlr_output *output, struct wlr_backend *backend,
 	const struct wlr_output_impl *impl);
 void wlr_output_free(struct wlr_output *output);
-void wlr_output_update_size(struct wlr_output *output, int32_t width,
+void wlr_output_update_mode(struct wlr_output *output,
-	int32_t height);
+	struct wlr_output_mode *mode);
+void wlr_output_update_custom_mode(struct wlr_output *output, int32_t width,
+	int32_t height, int32_t refresh);
 struct wl_global *wlr_output_create_global(struct wlr_output *wlr_output,
 	struct wl_display *display);
 void wlr_output_destroy_global(struct wlr_output *wlr_output);

include/wlr/types/wlr_output.h

@@ -47,6 +47,7 @@ struct wlr_output {
 	char serial[16];
 	float scale;
 	int32_t width, height;
+	int32_t refresh; // mHz
 	int32_t phys_width, phys_height; // mm
 	enum wl_output_subpixel subpixel;
 	enum wl_output_transform transform;

rootston/main.c

@@ -32,6 +32,7 @@ int main(int argc, char **argv) {
 
 	//assert(server.backend = wlr_backend_autocreate(server.wl_display));
 	assert(server.backend = wlr_headless_backend_create(server.wl_display));
+	wlr_headless_add_output(server.backend, 1280, 720);
 
 	assert(server.renderer = wlr_gles2_renderer_create(server.backend));
 	server.data_device_manager =

types/wlr_output.c

@@ -39,7 +39,7 @@ static void wl_output_send_to_resource(struct wl_resource *resource) {
 		if (wl_list_length(&output->modes) == 0) {
 			// Output has no mode, send the current width/height
 			wl_output_send_mode(resource, WL_OUTPUT_MODE_CURRENT,
-				output->width, output->height, 0);
+				output->width, output->height, output->refresh);
 		}
 	}
 	if (version >= WL_OUTPUT_SCALE_SINCE_VERSION) {
@@ -65,9 +65,9 @@ static void wlr_output_send_current_mode_to_resource(
 		wl_output_send_mode(resource, flags | WL_OUTPUT_MODE_CURRENT,
 			mode->width, mode->height, mode->refresh);
 	} else {
-		// Output has no mode, send the current width/height
+		// Output has no mode
 		wl_output_send_mode(resource, WL_OUTPUT_MODE_CURRENT, output->width,
-			output->height, 0);
+			output->height, output->refresh);
 	}
 	if (version >= WL_OUTPUT_DONE_SINCE_VERSION) {
 		wl_output_send_done(resource);
@@ -192,9 +192,17 @@ bool wlr_output_set_custom_mode(struct wlr_output *output, int32_t width,
 	return result;
 }
 
-void wlr_output_update_size(struct wlr_output *output, int32_t width,
+void wlr_output_update_mode(struct wlr_output *output,
-		int32_t height) {
+		struct wlr_output_mode *mode) {
-	if (output->width == width && output->height == height) {
+	output->current_mode = mode;
+	wlr_output_update_custom_mode(output, mode->width, mode->height,
+		mode->refresh);
+}
+
+void wlr_output_update_custom_mode(struct wlr_output *output, int32_t width,
+		int32_t height, int32_t refresh) {
+	if (output->width == width && output->height == height &&
+			output->refresh == refresh) {
 		return;
 	}
 
@@ -202,6 +210,8 @@ void wlr_output_update_size(struct wlr_output *output, int32_t width,
 	output->height = height;
 	wlr_output_update_matrix(output);
 
+	output->refresh = refresh;
+
 	struct wl_resource *resource;
 	wl_resource_for_each(resource, &output->wl_resources) {
 		wlr_output_send_current_mode_to_resource(resource);