cursor shape set correctly

Makefile

@@ -1,6 +1,6 @@
 LIBS=opengl wayland-client egl wayland-egl
 CFLAGS+=-g -Wall -Wextra $(shell pkg-config --cflags $(LIBS))
-LDLIBS+=$(shell pkg-config --libs $(LIBS))
+LDLIBS+=$(shell pkg-config --libs $(LIBS)) -lwayland-cursor
 
 WAYLAND_PROTOCOLS=$(shell pkg-config --variable=pkgdatadir wayland-protocols)
 WAYLAND_SCANNER=$(shell pkg-config --variable=wayland_scanner wayland-scanner)

fragment.glsl

@@ -86,6 +86,7 @@ void main() {
     vec2 uv = vec2(screen_uv.x, screen_uv.y);
     uv.y += sin(uv.x * 2.0 + time * 0.2) * 0.47;
     uv.y += sin(uv.x * 4.3 + time * 1.34) * 0.09;
+
     uv += 100.0;
     float out_val = perlin_noise(uv, vec2(0.0, 0.0), time / 1.0);
     float min = 0.42 + sin(time)/8.0;

wayland.c

@@ -117,6 +117,60 @@ static const struct wl_callback_listener wl_surface_frame_listener = {
 	.done = wl_surface_frame_done,
 };
 
+void pointer_enter_handler (
+    void *data,
+    struct wl_pointer *pointer,
+    uint32_t serial,
+    struct wl_surface *surface,
+    wl_fixed_t x, wl_fixed_t y )
+{
+    struct client_state *state = data;
+    wl_pointer_set_cursor(pointer, serial, state->cursor_surface,
+        state->wl_cursor_image->hotspot_x, state->wl_cursor_image->hotspot_y);
+}
+
+void pointer_leave_handler (
+    void *data,
+    struct wl_pointer *pointer,
+    uint32_t serial,
+    struct wl_surface *surface
+) { }
+
+void pointer_motion_handler (
+    void *data,
+    struct wl_pointer *pointer,
+    uint32_t time,
+    wl_fixed_t x,
+    wl_fixed_t y
+) { }
+
+void pointer_button_handler
+(
+    void *data,
+    struct wl_pointer *pointer,
+    uint32_t serial,
+    uint32_t time,
+    uint32_t button,
+    uint32_t state
+) { }
+
+void pointer_axis_handler
+(
+    void *data,
+    struct wl_pointer *pointer,
+    uint32_t time,
+    uint32_t axis,
+    wl_fixed_t value
+) { }
+
+const struct wl_pointer_listener wl_pointer_listener = {
+    .enter = pointer_enter_handler,
+    .leave = pointer_leave_handler,
+    .motion = pointer_motion_handler,
+    .button = pointer_button_handler,
+    .axis = pointer_axis_handler
+};
+
 static void registry_handle_global(
         void *data,
         struct wl_registry *registry,
@@ -135,6 +189,28 @@ static void registry_handle_global(
         // Set up wl_surface
         //state->wl_surface = wl_compositor_create_surface(state->wl_compositor);
     }
+    if (strcmp(interface, wl_shm_interface.name) == 0) {
+        state->wl_shm = wl_registry_bind(registry, name,
+            &wl_shm_interface, 1);
+    }
+    if (strcmp(interface, wl_seat_interface.name) == 0) {
+        state->wl_seat = wl_registry_bind(registry, name,
+            &wl_seat_interface, 1);
+        state->wl_pointer = wl_seat_get_pointer(state->wl_seat);
+        wl_pointer_add_listener(state->wl_pointer, &wl_pointer_listener, state);
+
+        struct wl_cursor_theme *cursor_theme =
+            wl_cursor_theme_load(NULL, 24, state->wl_shm);
+        struct wl_cursor *cursor =
+            wl_cursor_theme_get_cursor(cursor_theme, "left_ptr");
+        state->wl_cursor_image = cursor->images[0];
+        struct wl_buffer *cursor_buffer =
+            wl_cursor_image_get_buffer(state->wl_cursor_image);
+
+        state->cursor_surface = wl_compositor_create_surface(state->wl_compositor);
+        wl_surface_attach(state->cursor_surface, cursor_buffer, 0, 0);
+        wl_surface_commit(state->cursor_surface);
+    }
     if ((strcmp(interface, xdg_wm_base_interface.name) == 0) && (state->output_type == OUTPUT_WINDOW)) {
         state->xdg_wm_base = wl_registry_bind(
                 registry, name, &xdg_wm_base_interface, 1);
@@ -339,6 +415,8 @@ void wayland_init(struct client_state *state, int output_type) {
     wl_registry_add_listener(state->wl_registry, &wl_registry_listener, state);
     wl_display_roundtrip(state->wl_display);
 
+    wl_seat_get_pointer(state->wl_seat);
+
     struct surface_list *next = state->surface_list;
     while (next != NULL) {
         wl_surface_commit(next->data.wl_surface);

wayland.h

@@ -1,5 +1,6 @@
 #include <EGL/egl.h>
 #include <wayland-egl.h>
+#include <wayland-cursor.h>
 #include "xdg-shell-protocol.h"
 #include "wlr-layer-shell-unstable-v1-protocol.h"
 
@@ -45,8 +46,15 @@ struct client_state {
     struct wl_display *wl_display;
     struct wl_registry *wl_registry;
     struct wl_compositor *wl_compositor;
+    struct wl_shm *wl_shm;
     struct xdg_wm_base *xdg_wm_base;
     struct zwlr_layer_shell_v1 *zwlr_layer_shell_v1;
+    struct wl_seat *wl_seat;
+    struct wl_pointer *wl_pointer;
+
+    // Cursor
+    struct wl_surface *cursor_surface;
+    struct wl_cursor_image *wl_cursor_image;
 
     struct surface_list *surface_list;
     /// Next in queue to check if it wants to be rendered.