Merge remote-tracking branch 'origin/master' into hidpi

.build.yml

@@ -6,6 +6,7 @@ packages:
   - mesa
   - libinput
   - libxkbcommon
+  - xcb-util-image
   - libcap
   - pixman
   - clang

.travis.yml

@@ -16,6 +16,7 @@ arch:
     - libinput
     - pixman
     - libxkbcommon
+    - xcb-util-image
     - libcap
   script:
     - "meson build"

backend/drm/backend.c

@@ -29,8 +29,8 @@ static void wlr_drm_backend_destroy(struct wlr_backend *backend) {
 
 	wlr_drm_restore_outputs(drm);
 
-	struct wlr_drm_connector *conn;
+	struct wlr_drm_connector *conn, *next;
-	wl_list_for_each(conn, &drm->outputs, link) {
+	wl_list_for_each_safe(conn, next, &drm->outputs, link) {
 		wlr_output_destroy(&conn->output);
 	}
 

backend/drm/drm.c

@@ -533,13 +533,14 @@ static bool wlr_drm_connector_set_cursor(struct wlr_output *output,
 			return false;
 		}
 
-		if (!wlr_drm_surface_init(&plane->surf, renderer, w, h, GBM_FORMAT_ARGB8888, 0)) {
+		if (!wlr_drm_surface_init(&plane->surf, renderer, w, h,
+				GBM_FORMAT_ARGB8888, 0)) {
 			wlr_log(L_ERROR, "Cannot allocate cursor resources");
 			return false;
 		}
 
-		plane->cursor_bo = gbm_bo_create(renderer->gbm, w, h, GBM_FORMAT_ARGB8888,
+		plane->cursor_bo = gbm_bo_create(renderer->gbm, w, h,
-			GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE);
+			GBM_FORMAT_ARGB8888, GBM_BO_USE_CURSOR | GBM_BO_USE_WRITE);
 		if (!plane->cursor_bo) {
 			wlr_log_errno(L_ERROR, "Failed to create cursor bo");
 			return false;
@@ -552,45 +553,26 @@ static bool wlr_drm_connector_set_cursor(struct wlr_output *output,
 
 		// TODO the image needs to be rotated depending on the output rotation
 
-		plane->wlr_tex = wlr_render_texture_create(plane->surf.renderer->wlr_rend);
+		plane->wlr_tex =
+			wlr_render_texture_create(plane->surf.renderer->wlr_rend);
 		if (!plane->wlr_tex) {
 			return false;
 		}
 	}
 
-	switch (output->transform) {
+	struct wlr_box hotspot = {
-	case WL_OUTPUT_TRANSFORM_90:
+		.width = plane->surf.width,
-		plane->cursor_hotspot_x = hotspot_x;
+		.height = plane->surf.height,
-		plane->cursor_hotspot_y = -plane->surf.height + hotspot_y;
+		.x = hotspot_x,
-		break;
+		.y = hotspot_y,
-	case WL_OUTPUT_TRANSFORM_180:
+	};
-		plane->cursor_hotspot_x = plane->surf.width - hotspot_x;
+	enum wl_output_transform transform =
-		plane->cursor_hotspot_y = plane->surf.height - hotspot_y;
+		wlr_output_transform_invert(output->transform);
-		break;
+	struct wlr_box transformed_hotspot;
-	case WL_OUTPUT_TRANSFORM_270:
+	wlr_output_transform_apply_to_box(transform, &hotspot,
-		plane->cursor_hotspot_x = -plane->surf.height + hotspot_x;
+		&transformed_hotspot);
-		plane->cursor_hotspot_y = hotspot_y;
+	plane->cursor_hotspot_x = transformed_hotspot.x;
-		break;
+	plane->cursor_hotspot_y = transformed_hotspot.y;
-	case WL_OUTPUT_TRANSFORM_FLIPPED:
-		plane->cursor_hotspot_x = plane->surf.width - hotspot_x;
-		plane->cursor_hotspot_y = hotspot_y;
-		break;
-	case WL_OUTPUT_TRANSFORM_FLIPPED_90:
-		plane->cursor_hotspot_x = hotspot_x;
-		plane->cursor_hotspot_y = -hotspot_y;
-		break;
-	case WL_OUTPUT_TRANSFORM_FLIPPED_180:
-		plane->cursor_hotspot_x = hotspot_x;
-		plane->cursor_hotspot_y = plane->surf.height - hotspot_y;
-		break;
-	case WL_OUTPUT_TRANSFORM_FLIPPED_270:
-		plane->cursor_hotspot_x = -plane->surf.height + hotspot_x;
-		plane->cursor_hotspot_y = plane->surf.width - hotspot_y;
-		break;
-	default: // WL_OUTPUT_TRANSFORM_NORMAL
-		plane->cursor_hotspot_x = hotspot_x;
-		plane->cursor_hotspot_y = hotspot_y;
-	}
 
 	if (!update_pixels) {
 		// Only update the cursor hotspot
@@ -620,11 +602,13 @@ static bool wlr_drm_connector_set_cursor(struct wlr_output *output,
 
 	float matrix[16];
 	wlr_texture_get_matrix(plane->wlr_tex, &matrix, &plane->matrix, 0, 0);
-	wlr_render_with_matrix(plane->surf.renderer->wlr_rend, plane->wlr_tex, &matrix);
+	wlr_render_with_matrix(plane->surf.renderer->wlr_rend, plane->wlr_tex,
+		&matrix);
 
 	glFinish();
 	glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, bo_stride);
-	glReadPixels(0, 0, plane->surf.width, plane->surf.height, GL_BGRA_EXT, GL_UNSIGNED_BYTE, bo_data);
+	glReadPixels(0, 0, plane->surf.width, plane->surf.height, GL_BGRA_EXT,
+		GL_UNSIGNED_BYTE, bo_data);
 	glPixelStorei(GL_UNPACK_ROW_LENGTH_EXT, 0);
 
 	wlr_drm_surface_swap_buffers(&plane->surf);
@@ -638,41 +622,30 @@ static bool wlr_drm_connector_move_cursor(struct wlr_output *output,
 		int x, int y) {
 	struct wlr_drm_connector *conn = (struct wlr_drm_connector *)output;
 	struct wlr_drm_backend *drm = (struct wlr_drm_backend *)output->backend;
-
 	struct wlr_drm_plane *plane = conn->crtc->cursor;
-	x -= plane->cursor_hotspot_x;
-	y -= plane->cursor_hotspot_y;
 
-	int width, height, tmp;
+	struct wlr_box box;
-	wlr_output_effective_resolution(output, &width, &height);
+	box.x = x;
+	box.y = y;
+	wlr_output_effective_resolution(output, &box.width, &box.height);
 
-	switch (output->transform) {
+	enum wl_output_transform transform =
-	case WL_OUTPUT_TRANSFORM_NORMAL:
+		wlr_output_transform_invert(output->transform);
-	case WL_OUTPUT_TRANSFORM_FLIPPED:
+	struct wlr_box transformed_box;
-	case WL_OUTPUT_TRANSFORM_FLIPPED_180:
+	wlr_output_transform_apply_to_box(transform, &box, &transformed_box);
-		// nothing to do
-		break;
-	case WL_OUTPUT_TRANSFORM_270:
-	case WL_OUTPUT_TRANSFORM_FLIPPED_270:
-		tmp = x;
-		x = y;
-		y = -(tmp - width);
-		break;
-	case WL_OUTPUT_TRANSFORM_90:
-	case WL_OUTPUT_TRANSFORM_FLIPPED_90:
-		tmp = x;
-		x = -(y - height);
-		y = tmp;
-		break;
-	}
 
-	return drm->iface->crtc_move_cursor(drm, conn->crtc, x, y);
+	transformed_box.x -= plane->cursor_hotspot_x;
+	transformed_box.y -= plane->cursor_hotspot_y;
+
+	return drm->iface->crtc_move_cursor(drm, conn->crtc, transformed_box.x,
+		transformed_box.y);
 }
 
 static void wlr_drm_connector_destroy(struct wlr_output *output) {
 	struct wlr_drm_connector *conn = (struct wlr_drm_connector *)output;
 	wlr_drm_connector_cleanup(conn);
 	wl_event_source_remove(conn->retry_pageflip);
+	wl_list_remove(&conn->link);
 	free(conn);
 }
 
@@ -851,6 +824,7 @@ void wlr_drm_scan_connectors(struct wlr_drm_backend *drm) {
 
 		drmModeFreeCrtc(conn->old_crtc);
 		wl_event_source_remove(conn->retry_pageflip);
+		wl_list_remove(&conn->link);
 		free(conn);
 	}
 }

backend/libinput/backend.c

@@ -99,13 +99,13 @@ static void wlr_libinput_backend_destroy(struct wlr_backend *_backend) {
 	}
 	struct wlr_libinput_backend *backend = (struct wlr_libinput_backend *)_backend;
 	for (size_t i = 0; i < backend->wlr_device_lists->length; i++) {
-		struct wlr_list *wlr_devices = backend->wlr_device_lists->items[i];
+		struct wl_list *wlr_devices = backend->wlr_device_lists->items[i];
-		for (size_t j = 0; j < wlr_devices->length; j++) {
+		struct wlr_input_device *wlr_dev, *next;
-			struct wlr_input_device *wlr_dev = wlr_devices->items[j];
+		wl_list_for_each_safe(wlr_dev, next, wlr_devices, link) {
 			wl_signal_emit(&backend->backend.events.input_remove, wlr_dev);
 			wlr_input_device_destroy(wlr_dev);
 		}
-		wlr_list_free(wlr_devices);
+		free(wlr_devices);
 	}
 	wlr_list_free(backend->wlr_device_lists);
 	wl_event_source_remove(backend->input_event);

backend/libinput/events.c

@@ -26,6 +26,7 @@ struct wlr_input_device *get_appropriate_device(
 static void wlr_libinput_device_destroy(struct wlr_input_device *_dev) {
 	struct wlr_libinput_input_device *dev = (struct wlr_libinput_input_device *)_dev;
 	libinput_device_unref(dev->handle);
+	wl_list_remove(&dev->wlr_input_device.link);
 	free(dev);
 }
 

backend/multi/backend.c

@@ -30,8 +30,8 @@ static bool multi_backend_start(struct wlr_backend *_backend) {
 
 static void multi_backend_destroy(struct wlr_backend *_backend) {
 	struct wlr_multi_backend *backend = (struct wlr_multi_backend *)_backend;
-	struct subbackend_state *sub;
+	struct subbackend_state *sub, *next;
-	wl_list_for_each(sub, &backend->backends, link) {
+	wl_list_for_each_safe(sub, next, &backend->backends, link) {
 		wlr_backend_destroy(sub->backend);
 		free(sub);
 	}

backend/wayland/output.c

@@ -59,6 +59,7 @@ static bool wlr_wl_output_set_cursor(struct wlr_output *_output,
 		(struct wlr_wl_backend_output *)_output;
 	struct wlr_wl_backend *backend = output->backend;
 
+	// TODO: use output->wlr_output.transform to transform pixels and hotpot
 	output->cursor.hotspot_x = hotspot_x;
 	output->cursor.hotspot_y = hotspot_y;
 
@@ -222,7 +223,7 @@ static void xdg_toplevel_handle_configure(void *data, struct zxdg_toplevel_v6 *x
 
 static void xdg_toplevel_handle_close(void *data, struct zxdg_toplevel_v6 *xdg_toplevel) {
 	struct wlr_wl_backend_output *output = data;
-        assert(output && output->xdg_toplevel == xdg_toplevel);
+	assert(output && output->xdg_toplevel == xdg_toplevel);
 
 	wl_display_terminate(output->backend->local_display);
 }

backend/wayland/registry.c

@@ -9,11 +9,11 @@
 
 static void xdg_shell_handle_ping(void *data, struct zxdg_shell_v6 *shell,
 		uint32_t serial) {
-        zxdg_shell_v6_pong(shell, serial);
+	zxdg_shell_v6_pong(shell, serial);
 }
 
 static const struct zxdg_shell_v6_listener xdg_shell_listener = {
-        xdg_shell_handle_ping,
+	xdg_shell_handle_ping,
 };
 
 

backend/wayland/wl_seat.c

@@ -42,21 +42,30 @@ static void pointer_handle_motion(void *data, struct wl_pointer *wl_pointer,
 		uint32_t time, wl_fixed_t surface_x, wl_fixed_t surface_y) {
 	struct wlr_input_device *dev = data;
 	assert(dev && dev->pointer);
-	struct wlr_wl_pointer *wlr_wl_pointer = (struct wlr_wl_pointer *)dev->pointer;
+	struct wlr_wl_pointer *wlr_wl_pointer =
+		(struct wlr_wl_pointer *)dev->pointer;
 	if (!wlr_wl_pointer->current_output) {
 		wlr_log(L_ERROR, "pointer motion event without current output");
 		return;
 	}
-	int width, height;
+
+	struct wlr_box box;
 	wl_egl_window_get_attached_size(wlr_wl_pointer->current_output->egl_window,
-		&width, &height);
+		&box.width, &box.height);
+	box.x = wl_fixed_to_int(surface_x);
+	box.y = wl_fixed_to_int(surface_y);
+	struct wlr_box transformed;
+	wlr_output_transform_apply_to_box(
+		wlr_wl_pointer->current_output->wlr_output.transform, &box,
+		&transformed);
+
 	struct wlr_event_pointer_motion_absolute wlr_event;
 	wlr_event.device = dev;
 	wlr_event.time_msec = time;
-	wlr_event.width_mm = width;
+	wlr_event.width_mm = transformed.width;
-	wlr_event.height_mm = height;
+	wlr_event.height_mm = transformed.height;
-	wlr_event.x_mm = wl_fixed_to_double(surface_x);
+	wlr_event.x_mm = transformed.x;
-	wlr_event.y_mm = wl_fixed_to_double(surface_y);
+	wlr_event.y_mm = transformed.y;
 	wl_signal_emit(&dev->pointer->events.motion_absolute, &wlr_event);
 }
 

examples/meson.build

@@ -1,7 +1,8 @@
 lib_shared = static_library(
 	'shared',
-	['shared.c', 'cat.c', 'ini.c', 'config.c'],
+	['support/shared.c', 'support/cat.c', 'support/ini.c', 'support/config.c'],
 	dependencies: wlroots,
+	include_directories: include_directories('support')
 )
 
 executable('simple', 'simple.c', dependencies: wlroots, link_with: lib_shared)

examples/multi-pointer.c

@@ -22,9 +22,9 @@
 #include <wlr/types/wlr_cursor.h>
 #include <wlr/util/log.h>
 #include <wlr/types/wlr_list.h>
-#include "shared.h"
+#include "support/shared.h"
-#include "config.h"
+#include "support/config.h"
-#include "cat.h"
+#include "support/cat.h"
 
 struct sample_state;
 

examples/output-layout.c

@@ -21,9 +21,9 @@
 #include <wlr/types/wlr_output.h>
 #include <wlr/types/wlr_keyboard.h>
 #include <math.h>
-#include "shared.h"
+#include "support/shared.h"
-#include "config.h"
+#include "support/config.h"
-#include "cat.h"
+#include "support/cat.h"
 
 struct sample_state {
 	struct example_config *config;

examples/pointer.c

@@ -22,9 +22,9 @@
 #include <wlr/types/wlr_cursor.h>
 #include <wlr/util/log.h>
 #include <wlr/types/wlr_list.h>
-#include "shared.h"
+#include "support/shared.h"
-#include "config.h"
+#include "support/config.h"
-#include "cat.h"
+#include "support/cat.h"
 
 struct sample_state {
 	struct compositor_state *compositor;

examples/rotation.c

@@ -18,9 +18,9 @@
 #include <wlr/types/wlr_keyboard.h>
 #include <wlr/util/log.h>
 #include <math.h>
-#include "shared.h"
+#include "support/shared.h"
-#include "config.h"
+#include "support/config.h"
-#include "cat.h"
+#include "support/cat.h"
 
 struct sample_state {
 	struct example_config *config;

examples/simple.c

@@ -11,7 +11,7 @@
 #include <wlr/types/wlr_output.h>
 #include <wlr/util/log.h>
 #include <xkbcommon/xkbcommon.h>
-#include "shared.h"
+#include "support/shared.h"
 
 struct sample_state {
 	float color[3];

examples/support/README

@@ -0,0 +1,2 @@
+Support code for the examples. Code that's not relevant to the principle each
+example demonstrates is largely offloaded to this directory.

examples/tablet.c

@@ -19,8 +19,8 @@
 #include <wlr/types/wlr_tablet_pad.h>
 #include <wlr/util/log.h>
 #include <math.h>
-#include "shared.h"
+#include "support/shared.h"
-#include "cat.h"
+#include "support/cat.h"
 
 struct sample_state {
 	struct wlr_renderer *renderer;

examples/touch.c

@@ -18,8 +18,8 @@
 #include <wlr/backend/session.h>
 #include <wlr/types/wlr_list.h>
 #include <wlr/util/log.h>
-#include "shared.h"
+#include "support/shared.h"
-#include "cat.h"
+#include "support/cat.h"
 
 struct sample_state {
 	struct wlr_renderer *renderer;

include/wlr/interfaces/wlr_output.h

@@ -2,6 +2,7 @@
 #define WLR_INTERFACES_WLR_OUTPUT_H
 
 #include <stdbool.h>
+#include <wlr/types/wlr_box.h>
 #include <wlr/types/wlr_output.h>
 #include <wlr/backend.h>
 
@@ -31,4 +32,8 @@ 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);
 
+void wlr_output_transform_apply_to_box(enum wl_output_transform transform,
+	struct wlr_box *box, struct wlr_box *dest);
+enum wl_output_transform wlr_output_transform_invert(enum wl_output_transform);
+
 #endif

include/wlr/types/wlr_output.h

@@ -1,9 +1,9 @@
 #ifndef WLR_TYPES_WLR_OUTPUT_H
 #define WLR_TYPES_WLR_OUTPUT_H
 
+#include <stdbool.h>
 #include <wayland-util.h>
 #include <wayland-server.h>
-#include <stdbool.h>
 
 struct wlr_output_mode {
 	uint32_t flags; // enum wl_output_mode
@@ -15,10 +15,12 @@ struct wlr_output_mode {
 struct wlr_output_cursor {
 	struct wlr_output *output;
 	int32_t x, y;
+	bool enabled;
 	uint32_t width, height;
 	int32_t hotspot_x, hotspot_y;
 	struct wl_list link;
 
+	// only when using a software cursor without a surface
 	struct wlr_renderer *renderer;
 	struct wlr_texture *texture;
 
@@ -44,8 +46,9 @@ struct wlr_output {
 	uint32_t scale;
 	int32_t width, height;
 	int32_t phys_width, phys_height; // mm
-	int32_t subpixel; // enum wl_output_subpixel
+	enum wl_output_subpixel subpixel;
-	int32_t transform; // enum wl_output_transform
+	enum wl_output_transform transform;
+	bool needs_swap;
 
 	float transform_matrix[16];
 

include/wlr/types/wlr_seat.h

@@ -142,6 +142,7 @@ struct wlr_seat {
 struct wlr_seat_pointer_request_set_cursor_event {
 	struct wlr_seat_client *seat_client;
 	struct wlr_surface *surface;
+	uint32_t serial;
 	int32_t hotspot_x, hotspot_y;
 };
 

include/wlr/xwayland.h

@@ -12,6 +12,7 @@
 #endif
 
 struct wlr_xwm;
+struct wlr_xwayland_cursor;
 
 struct wlr_xwayland {
 	pid_t pid;
@@ -25,6 +26,7 @@ struct wlr_xwayland {
 	struct wl_event_source *sigusr1_source;
 	struct wl_listener destroy_listener;
 	struct wlr_xwm *xwm;
+	struct wlr_xwayland_cursor *cursor;
 
 	struct {
 		struct wl_signal new_surface;
@@ -148,6 +150,10 @@ struct wlr_xwayland *wlr_xwayland_create(struct wl_display *wl_display,
 
 void wlr_xwayland_destroy(struct wlr_xwayland *wlr_xwayland);
 
+void wlr_xwayland_set_cursor(struct wlr_xwayland *wlr_xwayland,
+	uint8_t *pixels, uint32_t stride, uint32_t width, uint32_t height,
+	int32_t hotspot_x, int32_t hotspot_y);
+
 void wlr_xwayland_surface_activate(struct wlr_xwayland *wlr_xwayland,
 	struct wlr_xwayland_surface *surface, bool activated);
 

meson.build

@@ -52,6 +52,8 @@ pixman         = dependency('pixman-1')
 xcb            = dependency('xcb')
 xcb_composite  = dependency('xcb-composite')
 xcb_xfixes     = dependency('xcb-xfixes')
+xcb_image      = dependency('xcb-image')
+xcb_render     = dependency('xcb-render')
 xcb_icccm      = dependency('xcb-icccm', required: false)
 x11_xcb        = dependency('x11-xcb')
 libcap         = dependency('libcap', required: false)

rootston/config.c

@@ -232,7 +232,9 @@ static int config_ini_handler(void *user, const char *section, const char *name,
 			oc->scale = strtol(value, NULL, 10);
 			assert(oc->scale >= 1);
 		} else if (strcmp(name, "rotate") == 0) {
-			if (strcmp(value, "90") == 0) {
+			if (strcmp(value, "normal") == 0) {
+				oc->transform = WL_OUTPUT_TRANSFORM_NORMAL;
+			} else if (strcmp(value, "90") == 0) {
 				oc->transform = WL_OUTPUT_TRANSFORM_90;
 			} else if (strcmp(value, "180") == 0) {
 				oc->transform = WL_OUTPUT_TRANSFORM_180;

rootston/input.c

@@ -4,6 +4,7 @@
 #include <wlr/types/wlr_cursor.h>
 #include <wlr/util/log.h>
 #include <wlr/xcursor.h>
+#include <wlr/xwayland.h>
 #include "rootston/server.h"
 #include "rootston/config.h"
 #include "rootston/input.h"
@@ -96,6 +97,14 @@ struct roots_input *input_create(struct roots_server *server,
 		return NULL;
 	}
 
+	if (server->desktop->xwayland != NULL) {
+		struct wlr_xcursor_image *xcursor_image = xcursor->images[0];
+		wlr_xwayland_set_cursor(server->desktop->xwayland,
+			xcursor_image->buffer, xcursor_image->width, xcursor_image->width,
+			xcursor_image->height, xcursor_image->hotspot_x,
+			xcursor_image->hotspot_y);
+	}
+
 	input->wl_seat = wlr_seat_create(server->wl_display, "seat0");
 	if (input->wl_seat == NULL) {
 		wlr_log(L_ERROR, "Cannot create seat");

types/wlr_compositor.c

@@ -13,10 +13,21 @@ static void destroy_surface_listener(struct wl_listener *listener, void *data) {
 static void wl_compositor_create_surface(struct wl_client *client,
 		struct wl_resource *resource, uint32_t id) {
 	struct wlr_compositor *compositor = wl_resource_get_user_data(resource);
+
 	struct wl_resource *surface_resource = wl_resource_create(client,
-			&wl_surface_interface, wl_resource_get_version(resource), id);
+		&wl_surface_interface, wl_resource_get_version(resource), id);
+	if (surface_resource == NULL) {
+		wl_resource_post_no_memory(resource);
+		return;
+	}
+
 	struct wlr_surface *surface = wlr_surface_create(surface_resource,
-			compositor->renderer);
+		compositor->renderer);
+	if (surface == NULL) {
+		wl_resource_destroy(surface_resource);
+		wl_resource_post_no_memory(resource);
+		return;
+	}
 	surface->compositor_data = compositor;
 	surface->compositor_listener.notify = &destroy_surface_listener;
 	wl_resource_add_destroy_listener(surface_resource,
@@ -49,13 +60,17 @@ static void wl_compositor_destroy(struct wl_resource *resource) {
 	}
 }
 
-static void wl_compositor_bind(struct wl_client *wl_client, void *_compositor,
+static void wl_compositor_bind(struct wl_client *wl_client, void *data,
 		uint32_t version, uint32_t id) {
-	struct wlr_compositor *compositor = _compositor;
+	struct wlr_compositor *compositor = data;
 	assert(wl_client && compositor);
 
 	struct wl_resource *wl_resource =
 		wl_resource_create(wl_client, &wl_compositor_interface, version, id);
+	if (wl_resource == NULL) {
+		wl_client_post_no_memory(wl_client);
+		return;
+	}
 	wl_resource_set_implementation(wl_resource, &wl_compositor_impl,
 		compositor, wl_compositor_destroy);
 	wl_list_insert(&compositor->wl_resources,

types/wlr_data_device.c

@@ -233,6 +233,9 @@ static struct wlr_data_offer *wlr_data_source_send_offer(
 		struct wlr_data_source *source,
 		struct wl_resource *target) {
 	struct wlr_data_offer *offer = calloc(1, sizeof(struct wlr_data_offer));
+	if (offer == NULL) {
+		return NULL;
+	}
 
 	offer->resource =
 		wl_resource_create(wl_resource_get_client(target),
@@ -781,18 +784,16 @@ data_device_manager_impl = {
 
 static void data_device_manager_bind(struct wl_client *client,
 		void *data, uint32_t version, uint32_t id) {
-	struct wl_resource *resource;
+	struct wl_resource *resource = wl_resource_create(client,
-
+		&wl_data_device_manager_interface,
-	resource = wl_resource_create(client,
+		version, id);
-			&wl_data_device_manager_interface,
-			version, id);
 	if (resource == NULL) {
 		wl_client_post_no_memory(client);
 		return;
 	}
 
-	wl_resource_set_implementation(resource,
+	wl_resource_set_implementation(resource, &data_device_manager_impl,
-			&data_device_manager_impl, NULL, NULL);
+		NULL, NULL);
 }
 
 struct wlr_data_device_manager *wlr_data_device_manager_create(
@@ -807,7 +808,6 @@ struct wlr_data_device_manager *wlr_data_device_manager_create(
 	manager->global =
 		wl_global_create(display, &wl_data_device_manager_interface,
 			3, NULL, data_device_manager_bind);
-
 	if (!manager->global) {
 		wlr_log(L_ERROR, "could not create data device manager wl global");
 		free(manager);

types/wlr_gamma_control.c

@@ -83,8 +83,8 @@ static void gamma_control_manager_get_gamma_control(struct wl_client *client,
 	gamma_control->resource = wl_resource_create(client,
 		&gamma_control_interface, version, id);
 	if (gamma_control->resource == NULL) {
-		wl_client_post_no_memory(client);
 		free(gamma_control);
+		wl_client_post_no_memory(client);
 		return;
 	}
 	wlr_log(L_DEBUG, "new gamma_control %p (res %p)", gamma_control,
@@ -109,10 +109,9 @@ static struct gamma_control_manager_interface gamma_control_manager_impl = {
 	.get_gamma_control = gamma_control_manager_get_gamma_control,
 };
 
-static void gamma_control_manager_bind(struct wl_client *client,
+static void gamma_control_manager_bind(struct wl_client *client, void *data,
-		void *_gamma_control_manager, uint32_t version, uint32_t id) {
+		uint32_t version, uint32_t id) {
-	struct wlr_gamma_control_manager *gamma_control_manager =
+	struct wlr_gamma_control_manager *gamma_control_manager = data;
-		_gamma_control_manager;
 	assert(client && gamma_control_manager);
 
 	struct wl_resource *resource = wl_resource_create(client,

types/wlr_output.c

@@ -91,13 +91,17 @@ static struct wl_output_interface wl_output_impl = {
 	.release = wl_output_release
 };
 
-static void wl_output_bind(struct wl_client *wl_client, void *_wlr_output,
+static void wl_output_bind(struct wl_client *wl_client, void *data,
 		uint32_t version, uint32_t id) {
-	struct wlr_output *wlr_output = _wlr_output;
+	struct wlr_output *wlr_output = data;
 	assert(wl_client && wlr_output);
 
 	struct wl_resource *wl_resource = wl_resource_create(wl_client,
 		&wl_output_interface, version, id);
+	if (wl_resource == NULL) {
+		wl_client_post_no_memory(wl_client);
+		return;
+	}
 	wl_resource_set_implementation(wl_resource, &wl_output_impl, wlr_output,
 		wl_output_destroy);
 	wl_list_insert(&wlr_output->wl_resources,
@@ -254,10 +258,6 @@ static void output_cursor_render(struct wlr_output_cursor *cursor) {
 	struct wlr_texture *texture = cursor->texture;
 	struct wlr_renderer *renderer = cursor->renderer;
 	if (cursor->surface != NULL) {
-		// Some clients commit a cursor surface with a NULL buffer to hide it.
-		if (!wlr_surface_has_buffer(cursor->surface)) {
-			return;
-		}
 		texture = cursor->surface->texture;
 		renderer = cursor->surface->renderer;
 	}
@@ -268,8 +268,8 @@ static void output_cursor_render(struct wlr_output_cursor *cursor) {
 
 	struct wlr_box output_box;
 	output_box.x = output_box.y = 0;
-	output_box.width = cursor->output->width;
+	wlr_output_effective_resolution(cursor->output, &output_box.width,
-	output_box.height = cursor->output->height;
+		&output_box.height);
 
 	struct wlr_box cursor_box;
 	output_cursor_get_box(cursor, &cursor_box);
@@ -284,25 +284,32 @@ static void output_cursor_render(struct wlr_output_cursor *cursor) {
 	glEnable(GL_BLEND);
 	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 
+	int x = cursor->x - cursor->hotspot_x;
+	int y = cursor->y - cursor->hotspot_y;
+	if (cursor->surface != NULL) {
+		x += cursor->surface->current->sx;
+		y += cursor->surface->current->sy;
+	}
+
 	float matrix[16];
-	wlr_texture_get_matrix(texture, &matrix,
+	wlr_texture_get_matrix(texture, &matrix, &cursor->output->transform_matrix,
-		&cursor->output->transform_matrix, cursor->x - cursor->hotspot_x,
+		x, y);
-		cursor->y - cursor->hotspot_y);
 	wlr_render_with_matrix(renderer, texture, &matrix);
 }
 
 void wlr_output_swap_buffers(struct wlr_output *output) {
+	wl_signal_emit(&output->events.swap_buffers, &output);
+
 	struct wlr_output_cursor *cursor;
 	wl_list_for_each(cursor, &output->cursors, link) {
-		if (output->hardware_cursor == cursor) {
+		if (!cursor->enabled || output->hardware_cursor == cursor) {
 			continue;
 		}
 		output_cursor_render(cursor);
 	}
 
-	wl_signal_emit(&output->events.swap_buffers, &output);
-
 	output->impl->swap_buffers(output);
+	output->needs_swap = false;
 }
 
 void wlr_output_set_gamma(struct wlr_output *output,
@@ -320,6 +327,9 @@ uint32_t wlr_output_get_gamma_size(struct wlr_output *output) {
 }
 
 static void output_cursor_reset(struct wlr_output_cursor *cursor) {
+	if (cursor->output->hardware_cursor != cursor) {
+		cursor->output->needs_swap = true;
+	}
 	if (cursor->surface != NULL) {
 		wl_list_remove(&cursor->surface_commit.link);
 		wl_list_remove(&cursor->surface_destroy.link);
@@ -348,6 +358,12 @@ bool wlr_output_cursor_set_image(struct wlr_output_cursor *cursor,
 	}
 
 	wlr_log(L_INFO, "Falling back to software cursor");
+	cursor->output->needs_swap = true;
+
+	cursor->enabled = pixels != NULL;
+	if (!cursor->enabled) {
+		return true;
+	}
 
 	if (cursor->renderer == NULL) {
 		cursor->renderer = wlr_gles2_renderer_create(cursor->output->backend);
@@ -368,10 +384,16 @@ bool wlr_output_cursor_set_image(struct wlr_output_cursor *cursor,
 }
 
 static void output_cursor_commit(struct wlr_output_cursor *cursor) {
+	// Some clients commit a cursor surface with a NULL buffer to hide it.
+	cursor->enabled = wlr_surface_has_buffer(cursor->surface);
 	cursor->width = cursor->surface->current->width;
 	cursor->height = cursor->surface->current->height;
 
-	// TODO: if hardware cursor, upload pixels
+	if (cursor->output->hardware_cursor != cursor) {
+		cursor->output->needs_swap = true;
+	} else {
+		// TODO: upload pixels
+	}
 }
 
 static inline int64_t timespec_to_msec(const struct timespec *a) {
@@ -410,10 +432,6 @@ void wlr_output_cursor_set_surface(struct wlr_output_cursor *cursor,
 		return;
 	}
 
-	if (surface) {
-		cursor->width = surface->current->width;
-		cursor->height = surface->current->height;
-	}
 	cursor->hotspot_x = hotspot_x;
 	cursor->hotspot_y = hotspot_y;
 
@@ -446,6 +464,10 @@ void wlr_output_cursor_set_surface(struct wlr_output_cursor *cursor,
 		wl_signal_add(&surface->events.destroy, &cursor->surface_destroy);
 		output_cursor_commit(cursor);
 	} else {
+		cursor->enabled = false;
+		cursor->width = 0;
+		cursor->height = 0;
+
 		// TODO: if hardware cursor, disable cursor
 	}
 }
@@ -457,6 +479,7 @@ bool wlr_output_cursor_move(struct wlr_output_cursor *cursor, int x, int y) {
 	cursor->y = y;
 
 	if (cursor->output->hardware_cursor != cursor) {
+		cursor->output->needs_swap = true;
 		return true;
 	}
 
@@ -503,3 +526,58 @@ void wlr_output_cursor_destroy(struct wlr_output_cursor *cursor) {
 	wl_list_remove(&cursor->link);
 	free(cursor);
 }
+
+void wlr_output_transform_apply_to_box(enum wl_output_transform transform,
+		struct wlr_box *box, struct wlr_box *dest) {
+	if (transform % 2 == 0) {
+		dest->width = box->width;
+		dest->height = box->height;
+	} else {
+		dest->width = box->height;
+		dest->height = box->width;
+	}
+
+	switch (transform) {
+	case WL_OUTPUT_TRANSFORM_NORMAL:
+		dest->x = box->x;
+		dest->y = box->y;
+		break;
+	case WL_OUTPUT_TRANSFORM_90:
+		dest->x = box->y;
+		dest->y = box->width - box->x;
+		break;
+	case WL_OUTPUT_TRANSFORM_180:
+		dest->x = box->width - box->x;
+		dest->y = box->height - box->y;
+		break;
+	case WL_OUTPUT_TRANSFORM_270:
+		dest->x = box->height - box->y;
+		dest->y = box->x;
+		break;
+	case WL_OUTPUT_TRANSFORM_FLIPPED:
+		dest->x = box->width - box->x;
+		dest->y = box->y;
+		break;
+	case WL_OUTPUT_TRANSFORM_FLIPPED_90:
+		dest->x = box->y;
+		dest->y = box->x;
+		break;
+	case WL_OUTPUT_TRANSFORM_FLIPPED_180:
+		dest->x = box->x;
+		dest->y = box->height - box->y;
+		break;
+	case WL_OUTPUT_TRANSFORM_FLIPPED_270:
+		dest->x = box->height - box->y;
+		dest->y = box->width - box->x;
+		break;
+	}
+}
+
+enum wl_output_transform wlr_output_transform_invert(
+		enum wl_output_transform transform) {
+	if ((transform & WL_OUTPUT_TRANSFORM_90) &&
+			!(transform & WL_OUTPUT_TRANSFORM_FLIPPED)) {
+		transform ^= WL_OUTPUT_TRANSFORM_180;
+	}
+	return transform;
+}

types/wlr_screenshooter.c

@@ -51,16 +51,17 @@ static void output_frame_notify(struct wl_listener *listener, void *_data) {
 }
 
 static void screenshooter_shoot(struct wl_client *client,
-		struct wl_resource *_screenshooter, uint32_t id,
+		struct wl_resource *screenshooter_resource, uint32_t id,
-		struct wl_resource *_output, struct wl_resource *_buffer) {
+		struct wl_resource *output_resource,
+		struct wl_resource *buffer_resource) {
 	struct wlr_screenshooter *screenshooter =
-		wl_resource_get_user_data(_screenshooter);
+		wl_resource_get_user_data(screenshooter_resource);
-	struct wlr_output *output = wl_resource_get_user_data(_output);
+	struct wlr_output *output = wl_resource_get_user_data(output_resource);
-	if (!wl_shm_buffer_get(_buffer)) {
+	if (!wl_shm_buffer_get(buffer_resource)) {
 		wlr_log(L_ERROR, "Invalid buffer: not a shared memory buffer");
 		return;
 	}
-	struct wl_shm_buffer *shm_buffer = wl_shm_buffer_get(_buffer);
+	struct wl_shm_buffer *shm_buffer = wl_shm_buffer_get(buffer_resource);
 	int32_t width = wl_shm_buffer_get_width(shm_buffer);
 	int32_t height = wl_shm_buffer_get_height(shm_buffer);
 	int32_t stride = wl_shm_buffer_get_stride(shm_buffer);
@@ -84,23 +85,31 @@ static void screenshooter_shoot(struct wl_client *client,
 	struct wlr_screenshot *screenshot =
 		calloc(1, sizeof(struct wlr_screenshot));
 	if (!screenshot) {
-		wl_client_post_no_memory(client);
+		wl_resource_post_no_memory(screenshooter_resource);
 		return;
 	}
-	screenshot->output_resource = _output;
+	screenshot->output_resource = output_resource;
 	screenshot->output = output;
 	screenshot->screenshooter = screenshooter;
 	screenshot->resource = wl_resource_create(client,
-		&orbital_screenshot_interface, wl_resource_get_version(_screenshooter),
+		&orbital_screenshot_interface,
-		id);
+		wl_resource_get_version(screenshooter_resource), id);
-	wlr_log(L_DEBUG, "new screenshot %p (res %p)", screenshot,
+	if (screenshot->resource == NULL) {
-		screenshot->resource);
+		free(screenshot);
+		wl_resource_post_no_memory(screenshooter_resource);
+		return;
+	}
 	wl_resource_set_implementation(screenshot->resource, NULL, screenshot,
 		NULL);
 
+	wlr_log(L_DEBUG, "new screenshot %p (res %p)", screenshot,
+		screenshot->resource);
+
 	struct screenshot_state *state = calloc(1, sizeof(struct screenshot_state));
 	if (!state) {
-		wl_client_post_no_memory(client);
+		wl_resource_destroy(screenshot->resource);
+		free(screenshot);
+		wl_resource_post_no_memory(screenshooter_resource);
 		return;
 	}
 	state->width = width;
@@ -117,13 +126,17 @@ static struct orbital_screenshooter_interface screenshooter_impl = {
 	.shoot = screenshooter_shoot,
 };
 
-static void screenshooter_bind(struct wl_client *wl_client,
+static void screenshooter_bind(struct wl_client *wl_client, void *data,
-		void *_screenshooter, uint32_t version, uint32_t id) {
+		uint32_t version, uint32_t id) {
-	struct wlr_screenshooter *screenshooter = _screenshooter;
+	struct wlr_screenshooter *screenshooter = data;
 	assert(wl_client && screenshooter);
 
 	struct wl_resource *wl_resource = wl_resource_create(wl_client,
 		&orbital_screenshooter_interface, version, id);
+	if (wl_resource == NULL) {
+		wl_client_post_no_memory(wl_client);
+		return;
+	}
 	wl_resource_set_implementation(wl_resource, &screenshooter_impl,
 		screenshooter, NULL);
 }
@@ -137,13 +150,12 @@ struct wlr_screenshooter *wlr_screenshooter_create(struct wl_display *display,
 	}
 	screenshooter->renderer = renderer;
 
-	struct wl_global *wl_global = wl_global_create(display,
+	screenshooter->wl_global = wl_global_create(display,
 		&orbital_screenshooter_interface, 1, screenshooter, screenshooter_bind);
-	if (!wl_global) {
+	if (screenshooter->wl_global == NULL) {
 		free(screenshooter);
 		return NULL;
 	}
-	screenshooter->wl_global = wl_global;
 
 	return screenshooter;
 }

types/wlr_seat.c

@@ -43,6 +43,7 @@ static void wl_pointer_set_cursor(struct wl_client *client,
 	}
 	event->seat_client = seat_client;
 	event->surface = surface;
+	event->serial = serial;
 	event->hotspot_x = hotspot_x;
 	event->hotspot_y = hotspot_y;
 
@@ -64,9 +65,9 @@ static void wl_pointer_destroy(struct wl_resource *resource) {
 }
 
 static void wl_seat_get_pointer(struct wl_client *client,
-		struct wl_resource *pointer_resource, uint32_t id) {
+		struct wl_resource *seat_resource, uint32_t id) {
 	struct wlr_seat_client *seat_client =
-		wl_resource_get_user_data(pointer_resource);
+		wl_resource_get_user_data(seat_resource);
 	if (!(seat_client->seat->capabilities & WL_SEAT_CAPABILITY_POINTER)) {
 		return;
 	}
@@ -77,7 +78,11 @@ static void wl_seat_get_pointer(struct wl_client *client,
 		wl_resource_destroy(seat_client->pointer);
 	}
 	seat_client->pointer = wl_resource_create(client, &wl_pointer_interface,
-		wl_resource_get_version(pointer_resource), id);
+		wl_resource_get_version(seat_resource), id);
+	if (seat_client->pointer == NULL) {
+		wl_resource_post_no_memory(seat_resource);
+		return;
+	}
 	wl_resource_set_implementation(seat_client->pointer, &wl_pointer_impl,
 		seat_client, &wl_pointer_destroy);
 }
@@ -125,6 +130,10 @@ static void wl_seat_get_keyboard(struct wl_client *client,
 	}
 	seat_client->keyboard = wl_resource_create(client, &wl_keyboard_interface,
 		wl_resource_get_version(seat_resource), id);
+	if (seat_client->keyboard == NULL) {
+		wl_resource_post_no_memory(seat_resource);
+		return;
+	}
 	wl_resource_set_implementation(seat_client->keyboard, &wl_keyboard_impl,
 		seat_client, &wl_keyboard_destroy);
 
@@ -161,6 +170,10 @@ static void wl_seat_get_touch(struct wl_client *client,
 	}
 	seat_client->touch = wl_resource_create(client, &wl_touch_interface,
 		wl_resource_get_version(seat_resource), id);
+	if (seat_client->touch == NULL) {
+		wl_resource_post_no_memory(seat_resource);
+		return;
+	}
 	wl_resource_set_implementation(seat_client->touch, &wl_touch_impl,
 		seat_client, &wl_touch_destroy);
 }
@@ -212,6 +225,11 @@ static void wl_seat_bind(struct wl_client *client, void *_wlr_seat,
 	}
 	seat_client->wl_resource =
 		wl_resource_create(client, &wl_seat_interface, version, id);
+	if (seat_client->wl_resource == NULL) {
+		free(seat_client);
+		wl_client_post_no_memory(client);
+		return;
+	}
 	seat_client->client = client;
 	seat_client->seat = wlr_seat;
 	wl_resource_set_implementation(seat_client->wl_resource, &wl_seat_impl,
@@ -408,7 +426,6 @@ static void pointer_surface_destroy_notify(struct wl_listener *listener,
 			listener, state, surface_destroy);
 	wl_list_remove(&state->surface_destroy.link);
 	wl_list_init(&state->surface_destroy.link);
-	state->focused_surface = NULL;
 	wlr_seat_pointer_clear_focus(state->seat);
 }
 
@@ -418,7 +435,6 @@ static void pointer_resource_destroy_notify(struct wl_listener *listener,
 			listener, state, resource_destroy);
 	wl_list_remove(&state->resource_destroy.link);
 	wl_list_init(&state->resource_destroy.link);
-	state->focused_surface = NULL;
 	wlr_seat_pointer_clear_focus(state->seat);
 }
 
@@ -680,7 +696,6 @@ static void keyboard_surface_destroy_notify(struct wl_listener *listener,
 			listener, state, surface_destroy);
 	wl_list_remove(&state->surface_destroy.link);
 	wl_list_init(&state->surface_destroy.link);
-	state->focused_surface = NULL;
 	wlr_seat_keyboard_clear_focus(state->seat);
 }
 
@@ -690,7 +705,6 @@ static void keyboard_resource_destroy_notify(struct wl_listener *listener,
 			listener, state, resource_destroy);
 	wl_list_remove(&state->resource_destroy.link);
 	wl_list_init(&state->resource_destroy.link);
-	state->focused_surface = NULL;
 	wlr_seat_keyboard_clear_focus(state->seat);
 }
 

types/wlr_server_decoration.c

@@ -73,8 +73,8 @@ static void server_decoration_manager_handle_create(struct wl_client *client,
 	decoration->resource = wl_resource_create(client,
 		&org_kde_kwin_server_decoration_interface, version, id);
 	if (decoration->resource == NULL) {
-		wl_client_post_no_memory(client);
 		free(decoration);
+		wl_client_post_no_memory(client);
 		return;
 	}
 	wl_resource_set_implementation(decoration->resource,
@@ -120,9 +120,9 @@ void server_decoration_manager_destroy_resource(struct wl_resource *resource) {
 	wl_list_remove(wl_resource_get_link(resource));
 }
 
-static void server_decoration_manager_bind(struct wl_client *client,
+static void server_decoration_manager_bind(struct wl_client *client, void *data,
-		void *_manager, uint32_t version, uint32_t id) {
+		uint32_t version, uint32_t id) {
-	struct wlr_server_decoration_manager *manager = _manager;
+	struct wlr_server_decoration_manager *manager = data;
 	assert(client && manager);
 
 	struct wl_resource *resource = wl_resource_create(client,

types/wlr_surface.c

@@ -819,14 +819,21 @@ static void subsurface_handle_parent_destroy(struct wl_listener *listener,
 
 void wlr_surface_make_subsurface(struct wlr_surface *surface,
 		struct wlr_surface *parent, uint32_t id) {
+	struct wl_client *client = wl_resource_get_client(surface->resource);
 	assert(surface->subsurface == NULL);
 
 	struct wlr_subsurface *subsurface =
 		calloc(1, sizeof(struct wlr_subsurface));
 	if (!subsurface) {
+		wl_client_post_no_memory(client);
 		return;
 	}
 	subsurface->cached = wlr_surface_state_create();
+	if (subsurface->cached == NULL) {
+		free(subsurface);
+		wl_client_post_no_memory(client);
+		return;
+	}
 	subsurface->synchronized = true;
 	subsurface->surface = surface;
 
@@ -840,10 +847,14 @@ void wlr_surface_make_subsurface(struct wlr_surface *surface,
 	wl_list_insert(&parent->subsurface_pending_list,
 		&subsurface->parent_pending_link);
 
-	struct wl_client *client = wl_resource_get_client(surface->resource);
-
 	subsurface->resource =
 		wl_resource_create(client, &wl_subsurface_interface, 1, id);
+	if (subsurface->resource == NULL) {
+		wlr_surface_state_destroy(subsurface->cached);
+		free(subsurface);
+		wl_client_post_no_memory(client);
+		return;
+	}
 
 	wl_resource_set_implementation(subsurface->resource,
 		&subsurface_implementation, subsurface,

types/wlr_wl_shell.c

@@ -506,19 +506,19 @@ static int shell_surface_ping_timeout(void *user_data) {
 }
 
 static void shell_protocol_get_shell_surface(struct wl_client *client,
-		struct wl_resource *resource, uint32_t id,
+		struct wl_resource *shell_resource, uint32_t id,
 		struct wl_resource *surface_resource) {
 	struct wlr_surface *surface = wl_resource_get_user_data(surface_resource);
 	if (wlr_surface_set_role(surface, wlr_wl_shell_surface_role,
-			resource, WL_SHELL_ERROR_ROLE)) {
+			shell_resource, WL_SHELL_ERROR_ROLE)) {
 		return;
 	}
 
-	struct wlr_wl_shell *wl_shell = wl_resource_get_user_data(resource);
+	struct wlr_wl_shell *wl_shell = wl_resource_get_user_data(shell_resource);
 	struct wlr_wl_shell_surface *wl_surface =
 		calloc(1, sizeof(struct wlr_wl_shell_surface));
 	if (wl_surface == NULL) {
-		wl_client_post_no_memory(client);
+		wl_resource_post_no_memory(shell_resource);
 		return;
 	}
 	wl_list_init(&wl_surface->grab_link);
@@ -530,13 +530,20 @@ static void shell_protocol_get_shell_surface(struct wl_client *client,
 	wl_surface->surface = surface;
 
 	wl_surface->resource = wl_resource_create(client,
-		&wl_shell_surface_interface, wl_resource_get_version(resource), id);
+		&wl_shell_surface_interface, wl_resource_get_version(shell_resource),
-	wlr_log(L_DEBUG, "new wl_shell %p (res %p)", wl_surface,
+		id);
-		wl_surface->resource);
+	if (wl_surface->resource == NULL) {
+		free(wl_surface);
+		wl_resource_post_no_memory(shell_resource);
+		return;
+	}
 	wl_resource_set_implementation(wl_surface->resource,
 		&shell_surface_impl, wl_surface,
 		shell_surface_resource_destroy);
 
+	wlr_log(L_DEBUG, "new wl_shell %p (res %p)", wl_surface,
+		wl_surface->resource);
+
 	wl_signal_init(&wl_surface->events.destroy);
 	wl_signal_init(&wl_surface->events.ping_timeout);
 	wl_signal_init(&wl_surface->events.request_move);
@@ -574,13 +581,17 @@ static void shell_destroy(struct wl_resource *resource) {
 	wl_list_remove(wl_resource_get_link(resource));
 }
 
-static void shell_bind(struct wl_client *wl_client, void *_wl_shell,
+static void shell_bind(struct wl_client *wl_client, void *data,
 		uint32_t version, uint32_t id) {
-	struct wlr_wl_shell *wl_shell = _wl_shell;
+	struct wlr_wl_shell *wl_shell = data;
 	assert(wl_client && wl_shell);
 
 	struct wl_resource *wl_resource = wl_resource_create(wl_client,
 		&wl_shell_interface, version, id);
+	if (wl_resource == NULL) {
+		wl_client_post_no_memory(wl_client);
+		return;
+	}
 	wl_resource_set_implementation(wl_resource, &shell_impl, wl_shell,
 		shell_destroy);
 	wl_list_insert(&wl_shell->wl_resources, wl_resource_get_link(wl_resource));

types/wlr_xdg_shell_v6.c

@@ -343,8 +343,8 @@ static void xdg_shell_create_positioner(struct wl_client *wl_client,
 		wl_resource_get_version(resource),
 		id);
 	if (positioner->resource == NULL) {
-		wl_client_post_no_memory(wl_client);
 		free(positioner);
+		wl_client_post_no_memory(wl_client);
 		return;
 	}
 
@@ -480,13 +480,13 @@ static void xdg_surface_get_popup(struct wl_client *client,
 	}
 
 	if (wlr_surface_set_role(surface->surface, wlr_desktop_xdg_popup_role,
-				resource, ZXDG_SHELL_V6_ERROR_ROLE)) {
+			resource, ZXDG_SHELL_V6_ERROR_ROLE)) {
 		return;
 	}
 
 	surface->popup_state = calloc(1, sizeof(struct wlr_xdg_popup_v6));
 	if (!surface->popup_state) {
-		wl_client_post_no_memory(client);
+		wl_resource_post_no_memory(resource);
 		return;
 	}
 
@@ -495,6 +495,7 @@ static void xdg_surface_get_popup(struct wl_client *client,
 			wl_resource_get_version(resource), id);
 	if (surface->popup_state->resource == NULL) {
 		free(surface->popup_state);
+		wl_resource_post_no_memory(resource);
 		return;
 	}
 
@@ -735,7 +736,7 @@ static void xdg_surface_get_toplevel(struct wl_client *client,
 
 	surface->toplevel_state = calloc(1, sizeof(struct wlr_xdg_toplevel_v6));
 	if (surface->toplevel_state == NULL) {
-		wl_client_post_no_memory(client);
+		wl_resource_post_no_memory(resource);
 		return;
 	}
 
@@ -744,6 +745,11 @@ static void xdg_surface_get_toplevel(struct wl_client *client,
 
 	struct wl_resource *toplevel_resource = wl_resource_create(client,
 		&zxdg_toplevel_v6_interface, wl_resource_get_version(resource), id);
+	if (toplevel_resource == NULL) {
+		free(surface->toplevel_state);
+		wl_resource_post_no_memory(resource);
+		return;
+	}
 
 	surface->toplevel_state->resource = toplevel_resource;
 
@@ -1118,9 +1124,20 @@ static void xdg_shell_get_xdg_surface(struct wl_client *wl_client,
 	surface->resource = wl_resource_create(wl_client,
 		&zxdg_surface_v6_interface, wl_resource_get_version(client_resource),
 		id);
+	if (surface->resource == NULL) {
+		free(surface->next_geometry);
+		free(surface->geometry);
+		free(surface);
+		wl_client_post_no_memory(wl_client);
+		return;
+	}
 
 	if (wlr_surface_has_buffer(surface->surface)) {
-		wl_resource_post_error(surface->resource,
+		wl_resource_destroy(surface->resource);
+		free(surface->next_geometry);
+		free(surface->geometry);
+		free(surface);
+		wl_resource_post_error(surface_resource,
 			ZXDG_SURFACE_V6_ERROR_UNCONFIGURED_BUFFER,
 			"xdg_surface must not have a buffer at creation");
 		return;
@@ -1199,9 +1216,9 @@ static int wlr_xdg_client_v6_ping_timeout(void *user_data) {
 	return 1;
 }
 
-static void xdg_shell_bind(struct wl_client *wl_client, void *_xdg_shell,
+static void xdg_shell_bind(struct wl_client *wl_client, void *data,
 		uint32_t version, uint32_t id) {
-	struct wlr_xdg_shell_v6 *xdg_shell = _xdg_shell;
+	struct wlr_xdg_shell_v6 *xdg_shell = data;
 	assert(wl_client && xdg_shell);
 
 	struct wlr_xdg_client_v6 *client =
@@ -1215,6 +1232,11 @@ static void xdg_shell_bind(struct wl_client *wl_client, void *_xdg_shell,
 
 	client->resource =
 		wl_resource_create(wl_client, &zxdg_shell_v6_interface, version, id);
+	if (client->resource == NULL) {
+		free(client);
+		wl_client_post_no_memory(wl_client);
+		return;
+	}
 	client->client = wl_client;
 	client->shell = xdg_shell;
 

xwayland/meson.build

@@ -11,6 +11,8 @@ lib_wlr_xwayland = static_library(
 		xcb,
 		xcb_composite,
 		xcb_xfixes,
+		xcb_image,
+		xcb_render,
 		xcb_icccm,
 		pixman,
 	],

xwayland/xwayland.c

@@ -29,6 +29,15 @@ static inline int clearenv(void) {
 }
 #endif
 
+struct wlr_xwayland_cursor {
+	uint8_t *pixels;
+	uint32_t stride;
+	uint32_t width;
+	uint32_t height;
+	int32_t hotspot_x;
+	int32_t hotspot_y;
+};
+
 static void safe_close(int fd) {
 	if (fd >= 0) {
 		close(fd);
@@ -190,6 +199,14 @@ static int xserver_handle_ready(int signal_number, void *data) {
 	wl_event_source_remove(wlr_xwayland->sigusr1_source);
 	wlr_xwayland->sigusr1_source = NULL;
 
+	if (wlr_xwayland->cursor != NULL) {
+		struct wlr_xwayland_cursor *cur = wlr_xwayland->cursor;
+		xwm_set_cursor(wlr_xwayland->xwm, cur->pixels, cur->stride, cur->width,
+			cur->height, cur->hotspot_x, cur->hotspot_y);
+		free(cur);
+		wlr_xwayland->cursor = NULL;
+	}
+
 	char display_name[16];
 	snprintf(display_name, sizeof(display_name), ":%d", wlr_xwayland->display);
 	setenv("DISPLAY", display_name, true);
@@ -298,3 +315,26 @@ struct wlr_xwayland *wlr_xwayland_create(struct wl_display *wl_display,
 	free(wlr_xwayland);
 	return NULL;
 }
+
+void wlr_xwayland_set_cursor(struct wlr_xwayland *wlr_xwayland,
+		uint8_t *pixels, uint32_t stride, uint32_t width, uint32_t height,
+		int32_t hotspot_x, int32_t hotspot_y) {
+	if (wlr_xwayland->xwm != NULL) {
+		xwm_set_cursor(wlr_xwayland->xwm, pixels, stride, width, height,
+			hotspot_x, hotspot_y);
+		return;
+	}
+
+	free(wlr_xwayland->cursor);
+
+	wlr_xwayland->cursor = calloc(1, sizeof(struct wlr_xwayland_cursor));
+	if (wlr_xwayland->cursor == NULL) {
+		return;
+	}
+	wlr_xwayland->cursor->pixels = pixels;
+	wlr_xwayland->cursor->stride = stride;
+	wlr_xwayland->cursor->width = width;
+	wlr_xwayland->cursor->height = height;
+	wlr_xwayland->cursor->hotspot_x = hotspot_x;
+	wlr_xwayland->cursor->hotspot_y = hotspot_y;
+}

xwayland/xwm.c

@@ -5,9 +5,12 @@
 #include <unistd.h>
 #include <xcb/composite.h>
 #include <xcb/xfixes.h>
+#include <xcb/xcb_image.h>
+#include <xcb/render.h>
 #include "wlr/util/log.h"
 #include "wlr/types/wlr_surface.h"
 #include "wlr/xwayland.h"
+#include "wlr/xcursor.h"
 #include "xwm.h"
 
 #ifdef HAS_XCB_ICCCM
@@ -1027,12 +1030,17 @@ void wlr_xwayland_surface_close(struct wlr_xwayland *wlr_xwayland,
 	} else {
 		xcb_kill_client(xwm->xcb_conn, xsurface->window_id);
 	}
+
+	xcb_flush(xwm->xcb_conn);
 }
 
 void xwm_destroy(struct wlr_xwm *xwm) {
 	if (!xwm) {
 		return;
 	}
+	if (xwm->cursor) {
+		xcb_free_cursor(xwm->xcb_conn, xwm->cursor);
+	}
 	if (xwm->event_source) {
 		wl_event_source_remove(xwm->event_source);
 	}
@@ -1095,7 +1103,6 @@ static void xwm_get_resources(struct wlr_xwm *xwm) {
 		xfixes_reply->major_version, xfixes_reply->minor_version);
 
 	free(xfixes_reply);
-
 }
 
 static void xwm_create_wm_window(struct wlr_xwm *xwm) {
@@ -1168,7 +1175,7 @@ static void xwm_get_visual_and_colormap(struct wlr_xwm *xwm) {
 	}
 
 	if (visualtype == NULL) {
-		wlr_log(L_DEBUG, "no 32 bit visualtype\n");
+		wlr_log(L_DEBUG, "No 32 bit visualtype\n");
 		return;
 	}
 
@@ -1181,6 +1188,71 @@ static void xwm_get_visual_and_colormap(struct wlr_xwm *xwm) {
 		xwm->visual_id);
 }
 
+static void xwm_get_render_format(struct wlr_xwm *xwm) {
+	xcb_render_query_pict_formats_cookie_t cookie =
+		xcb_render_query_pict_formats(xwm->xcb_conn);
+	xcb_render_query_pict_formats_reply_t *reply =
+		xcb_render_query_pict_formats_reply(xwm->xcb_conn, cookie, NULL);
+	xcb_render_pictforminfo_iterator_t iter =
+		xcb_render_query_pict_formats_formats_iterator(reply);
+	xcb_render_pictforminfo_t *format = NULL;
+	while (iter.rem > 0) {
+		if (iter.data->depth == 32) {
+			format = iter.data;
+			break;
+		}
+
+		xcb_render_pictforminfo_next(&iter);
+	}
+
+	if (format == NULL) {
+		wlr_log(L_DEBUG, "No 32 bit render format");
+		return;
+	}
+
+	xwm->render_format_id = format->id;
+}
+
+void xwm_set_cursor(struct wlr_xwm *xwm, const uint8_t *pixels, uint32_t stride,
+		uint32_t width, uint32_t height, int32_t hotspot_x, int32_t hotspot_y) {
+	if (!xwm->render_format_id) {
+		wlr_log(L_ERROR, "Cannot set xwm cursor: no render format available");
+		return;
+	}
+	if (xwm->cursor) {
+		xcb_free_cursor(xwm->xcb_conn, xwm->cursor);
+	}
+
+	stride *= 4;
+	int depth = 32;
+
+	xcb_pixmap_t pix = xcb_generate_id(xwm->xcb_conn);
+	xcb_create_pixmap(xwm->xcb_conn, depth, pix, xwm->screen->root, width,
+		height);
+
+	xcb_render_picture_t pic = xcb_generate_id(xwm->xcb_conn);
+	xcb_render_create_picture(xwm->xcb_conn, pic, pix, xwm->render_format_id,
+		0, 0);
+
+	xcb_gcontext_t gc = xcb_generate_id(xwm->xcb_conn);
+	xcb_create_gc(xwm->xcb_conn, gc, pix, 0, NULL);
+
+	xcb_put_image(xwm->xcb_conn, XCB_IMAGE_FORMAT_Z_PIXMAP, pix, gc,
+		width, height, 0, 0, 0, depth, stride * height * sizeof(uint8_t),
+		pixels);
+	xcb_free_gc(xwm->xcb_conn, gc);
+
+	xwm->cursor = xcb_generate_id(xwm->xcb_conn);
+	xcb_render_create_cursor(xwm->xcb_conn, xwm->cursor, pic, hotspot_x,
+		hotspot_y);
+	xcb_free_pixmap(xwm->xcb_conn, pix);
+
+	uint32_t values[] = {xwm->cursor};
+	xcb_change_window_attributes(xwm->xcb_conn, xwm->screen->root,
+		XCB_CW_CURSOR, values);
+	xcb_flush(xwm->xcb_conn);
+}
+
 struct wlr_xwm *xwm_create(struct wlr_xwayland *wlr_xwayland) {
 	struct wlr_xwm *xwm = calloc(1, sizeof(struct wlr_xwm));
 	if (xwm == NULL) {
@@ -1217,16 +1289,16 @@ struct wlr_xwm *xwm_create(struct wlr_xwayland *wlr_xwayland) {
 
 	xwm_get_resources(xwm);
 	xwm_get_visual_and_colormap(xwm);
+	xwm_get_render_format(xwm);
 
-	uint32_t values[1];
+	uint32_t values[] = {
-	values[0] =
 		XCB_EVENT_MASK_SUBSTRUCTURE_NOTIFY |
-		XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT |
+			XCB_EVENT_MASK_SUBSTRUCTURE_REDIRECT |
-		XCB_EVENT_MASK_PROPERTY_CHANGE;
+			XCB_EVENT_MASK_PROPERTY_CHANGE,
-
+	};
 	xcb_change_window_attributes(xwm->xcb_conn,
 		xwm->screen->root,
-		XCB_CW_EVENT_MASK /* | XCB_CW_CURSOR */,
+		XCB_CW_EVENT_MASK,
 		values);
 
 	xcb_composite_redirect_subwindows(xwm->xcb_conn,

xwayland/xwm.h

@@ -1,5 +1,7 @@
 #ifndef XWAYLAND_INTERNALS_H
 #define XWAYLAND_INTERNALS_H
+
+#include <xcb/render.h>
 #include <wayland-server-core.h>
 #include <wlr/xwayland.h>
 
@@ -49,6 +51,8 @@ struct wlr_xwm {
 	xcb_window_t window;
 	xcb_visualid_t visual_id;
 	xcb_colormap_t colormap;
+	xcb_render_pictformat_t render_format_id;
+	xcb_cursor_t cursor;
 
 	struct wlr_xwayland_surface *focus_surface;
 
@@ -60,8 +64,11 @@ struct wlr_xwm {
 	struct wl_listener compositor_surface_create;
 };
 
-void xwm_destroy(struct wlr_xwm *xwm);
-
 struct wlr_xwm *xwm_create(struct wlr_xwayland *wlr_xwayland);
 
+void xwm_destroy(struct wlr_xwm *xwm);
+
+void xwm_set_cursor(struct wlr_xwm *xwm, const uint8_t *pixels, uint32_t stride,
+	uint32_t width, uint32_t height, int32_t hotspot_x, int32_t hotspot_y);
+
 #endif