From f902b289c2a3956176fc328afb31ea4fc91f8984 Mon Sep 17 00:00:00 2001
From: Tomi Valkeinen <tomi.valkeinen@ti.com>
Date: Sat, 16 Apr 2016 22:16:44 +0300
Subject: kmscube: split into parts

---
 kmscube/cube-wl.cpp | 122 ++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 122 insertions(+)
 create mode 100644 kmscube/cube-wl.cpp

(limited to 'kmscube/cube-wl.cpp')

diff --git a/kmscube/cube-wl.cpp b/kmscube/cube-wl.cpp
new file mode 100644
index 0000000..c8dfa56
--- /dev/null
+++ b/kmscube/cube-wl.cpp
@@ -0,0 +1,122 @@
+
+#include <wayland-client.h>
+#include <wayland-egl.h>
+
+#include <EGL/egl.h>
+#include <GL/gl.h>
+
+#include <string.h>
+
+static struct wl_compositor *s_compositor = NULL;
+static struct wl_shell *s_shell = NULL;
+static EGLDisplay s_egl_display;
+static char s_running = 1;
+
+struct window {
+	EGLContext egl_context;
+	struct wl_surface *surface;
+	struct wl_shell_surface *shell_surface;
+	struct wl_egl_window *egl_window;
+	EGLSurface egl_surface;
+};
+
+// listeners
+static void registry_add_object(void *data, struct wl_registry *registry, uint32_t name, const char *interface, uint32_t version)
+{
+	if (!strcmp(interface, "wl_compositor"))
+		s_compositor = (struct wl_compositor*)wl_registry_bind(registry, name, &wl_compositor_interface, 0);
+	else if (!strcmp(interface, "wl_shell"))
+		s_shell = (struct wl_shell*)wl_registry_bind(registry, name, &wl_shell_interface, 0);
+}
+
+static void registry_remove_object(void *data, struct wl_registry *registry, uint32_t name)
+{
+
+}
+
+static struct wl_registry_listener registry_listener = { &registry_add_object, &registry_remove_object };
+
+static void shell_surface_ping(void *data, struct wl_shell_surface *shell_surface, uint32_t serial)
+{
+	wl_shell_surface_pong(shell_surface, serial);
+}
+
+static void shell_surface_configure(void *data, struct wl_shell_surface *shell_surface, uint32_t edges, int32_t width, int32_t height)
+{
+	struct window *window = (struct window*)data;
+
+	wl_egl_window_resize(window->egl_window, width, height, 0, 0);
+}
+
+static void shell_surface_popup_done(void *data, struct wl_shell_surface *shell_surface)
+{
+
+}
+
+static struct wl_shell_surface_listener shell_surface_listener = { &shell_surface_ping, &shell_surface_configure, &shell_surface_popup_done };
+
+static void create_window(struct window *window, int32_t width, int32_t height)
+{
+	eglBindAPI(EGL_OPENGL_API);
+	EGLint attributes[] = {
+		EGL_RED_SIZE,	8,
+		EGL_GREEN_SIZE, 8,
+		EGL_BLUE_SIZE,	8,
+		EGL_NONE
+	};
+	EGLConfig config;
+	EGLint num_config;
+	eglChooseConfig(s_egl_display, attributes, &config, 1, &num_config);
+	window->egl_context = eglCreateContext(s_egl_display, config, EGL_NO_CONTEXT, NULL);
+
+	window->surface = wl_compositor_create_surface(s_compositor);
+	window->shell_surface = wl_shell_get_shell_surface(s_shell, window->surface);
+	wl_shell_surface_add_listener(window->shell_surface, &shell_surface_listener, window);
+	wl_shell_surface_set_toplevel(window->shell_surface);
+	window->egl_window = wl_egl_window_create(window->surface, width, height);
+	window->egl_surface = eglCreateWindowSurface(s_egl_display, config, window->egl_window, NULL);
+	eglMakeCurrent(s_egl_display, window->egl_surface, window->egl_surface, window->egl_context);
+}
+
+static void delete_window(struct window *window)
+{
+	eglDestroySurface(s_egl_display, window->egl_surface);
+	wl_egl_window_destroy(window->egl_window);
+	wl_shell_surface_destroy(window->shell_surface);
+	wl_surface_destroy(window->surface);
+	eglDestroyContext(s_egl_display, window->egl_context);
+}
+
+static void draw_window(struct window *window)
+{
+	glClearColor(0.0, 1.0, 0.0, 1.0);
+	glClear(GL_COLOR_BUFFER_BIT);
+	eglSwapBuffers(s_egl_display, window->egl_surface);
+}
+
+int main_wl()
+{
+	struct wl_display *display = wl_display_connect(NULL);
+	struct wl_registry *registry = wl_display_get_registry(display);
+	wl_registry_add_listener(registry, &registry_listener, NULL);
+	wl_display_roundtrip(display);
+
+	s_egl_display = eglGetDisplay(display);
+	eglInitialize(s_egl_display, NULL, NULL);
+
+	uint32_t width = 600;
+	uint32_t height = 600;
+
+	struct window window;
+	create_window(&window, width, height);
+
+	while (s_running) {
+		wl_display_dispatch_pending(display);
+		draw_window(&window);
+	}
+
+	delete_window(&window);
+	eglTerminate(s_egl_display);
+	wl_display_disconnect(display);
+	return 0;
+}
-- 
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