moved things around

glonkers.c

@@ -9,6 +9,7 @@
 #include <sys/mman.h>
 #include "renderer.h"
 #include "wayland.h"
+#include <string.h>
 
 struct timespec program_start;
 
@@ -26,15 +27,24 @@ double time_since_start() {
 
 int main(int argc, char *argv[]) {
     char *shader_path = NULL;
+    int output_type = OUTPUT_WINDOW;
     if (argc >= 2) {
         shader_path = argv[1];
     } else {
         printf("need to supply path to shader\n");
         exit(1);
     }
+    if (argc >= 3) {
+        // xdg toplevel window (window) or wlr_layer_shell window (layer)
+        if (strcmp(argv[2], "window")) {
+            output_type = OUTPUT_WINDOW;
+        } else if (strcmp(argv[2], "layer")) {
+            output_type = OUTPUT_LAYER;
+        }
+    }
 
     struct client_state state;
-    wayland_init(&state);
+    wayland_init(&state, output_type);
 
     Renderer renderer = new_renderer();
 

wayland.c

@@ -71,12 +71,28 @@ registry_handle_global(void *data, struct wl_registry *registry,
     if (strcmp(interface, wl_compositor_interface.name) == 0) {
         state->wl_compositor = wl_registry_bind(
                 registry, name, &wl_compositor_interface, 4);
+        // Set up wl_surface
+        state->wl_surface = wl_compositor_create_surface(state->wl_compositor);
     }
     if (strcmp(interface, xdg_wm_base_interface.name) == 0) {
         state->xdg_wm_base = wl_registry_bind(
                 registry, name, &xdg_wm_base_interface, 1);
         xdg_wm_base_add_listener(state->xdg_wm_base,
                 &xdg_wm_base_listener, state);
+
+        state->xdg_surface = xdg_wm_base_get_xdg_surface(
+                state->xdg_wm_base, state->wl_surface);
+        xdg_surface_add_listener(state->xdg_surface, &xdg_surface_listener, state);
+        state->xdg_toplevel = xdg_surface_get_toplevel(state->xdg_surface);
+        xdg_toplevel_set_title(state->xdg_toplevel, "GLONKERS! 🕴️");
+        xdg_toplevel_add_listener(state->xdg_toplevel, &xdg_toplevel_listener, state);
+    }
+    if (strcmp(interface, zwlr_layer_shell_v1_interface.name) == 0) {
+        state->zwlr_layer_shell_v1 = wl_registry_bind(registry, name, &zwlr_layer_shell_v1_interface, 4);
+    }
+    if (strcmp(interface, wl_output_interface.name) == 0) {
+        state->wl_output = wl_registry_bind(
+                registry, name, &wl_output_interface, 4);
     }
 }
 
@@ -180,23 +196,21 @@ static void egl_init(struct client_state *state) {
 }
 
 /// Initializes wayland and creates an opengl context
-void wayland_init(struct client_state *state) {
+void wayland_init(struct client_state *state, int output_type) {
     int width = 700, height = 700;
     state->width = width;
     state->height = height;
     state->running = 1;
+    state->output_type = output_type;
     state->wl_display = wl_display_connect(NULL);
     state->wl_registry = wl_display_get_registry(state->wl_display);
     wl_registry_add_listener(state->wl_registry, &wl_registry_listener, state);
     wl_display_roundtrip(state->wl_display);
 
-    state->wl_surface = wl_compositor_create_surface(state->wl_compositor);
-    state->xdg_surface = xdg_wm_base_get_xdg_surface(
-            state->xdg_wm_base, state->wl_surface);
-    xdg_surface_add_listener(state->xdg_surface, &xdg_surface_listener, state);
-    state->xdg_toplevel = xdg_surface_get_toplevel(state->xdg_surface);
-    xdg_toplevel_set_title(state->xdg_toplevel, "GLONKERS! 🕴️");
-    xdg_toplevel_add_listener(state->xdg_toplevel, &xdg_toplevel_listener, state);
+    // wlr_layer_shell
+    //int layer = ZWLR_LAYER_SHELL_V1_LAYER_BACKGROUND;
+    //struct zwlr_layer_surface_v1 *zwlr_layer_surface = zwlr_layer_shell_v1_get_layer_surface(state->zwlr_layer_shell_v1, state->wl_surface, state->wl_output, layer, "wallpaper");
+    // toplevel
     wl_surface_commit(state->wl_surface);
 
     egl_init(state);

wayland.h

@@ -1,10 +1,17 @@
 #include <EGL/egl.h>
 #include <wayland-egl.h>
 #include "xdg-shell-protocol.h"
+#include "wlr-layer-shell-unstable-v1-protocol.h"
+
+/// A normal window
+#define OUTPUT_WINDOW 0;
+/// A desktop layer (wallpaper)
+#define OUTPUT_LAYER 1;
 
 struct client_state {
     int width, height;
     int running;
+    int output_type;
     /* Globals */
     struct wl_display *wl_display;
     struct wl_registry *wl_registry;
@@ -17,12 +24,16 @@ struct client_state {
 
     struct wl_egl_window *egl_window;
 
+    // wlr_layer_shell
+    struct zwlr_layer_shell_v1 *zwlr_layer_shell_v1;
+    struct wl_output *wl_output;
+
     EGLDisplay egl_display;
     EGLConfig egl_config;
     EGLSurface egl_surface;
     EGLContext egl_context;
 };
 
-void wayland_init(struct client_state *state);
+void wayland_init(struct client_state *state, int output_type);
 void commit(struct client_state *state);