Add egl-wayland-window-legacy.c

Legacy means clients not using the frame callback,
so need to be blocked in eglSwapBuffers.

1 files changed, 279 insertions, 0 deletions

diff --git a/egl-wayland-window-legacy.c b/egl-wayland-window-legacy.c
new file mode 100644
index 0000000..2385854
--- /dev/null
+++ b/egl-wayland-window-legacy.c
@@ -0,0 +1,279 @@
+#include <stdio.h>
+#include <string.h>
+#include <stdbool.h>
+#include <assert.h>
+
+#include <sys/time.h>
+
+#include <wayland-client.h>
+#include <wayland-egl.h>
+
+#include <GL/gl.h>
+#include <EGL/egl.h>
+
+struct display {
+	struct wl_display *display;
+	struct wl_egl_display *egl_display;
+	struct {
+		struct wl_compositor *compositor;
+		struct wl_shell *shell;
+	} interface;
+
+	struct {
+		EGLDisplay dpy;
+		EGLConfig  conf;
+		EGLContext ctx;
+	} egl;
+
+	uint32_t mask;
+};
+
+struct window {
+	struct display *display;
+	struct wl_surface *surface;
+	struct wl_egl_window *egl_window;
+
+	int width, height;
+
+	struct {
+		EGLSurface surf;
+	} egl;
+};
+
+static void
+init_egl(struct display *display)
+{
+	EGLint major, minor;
+	EGLint num_config;
+	EGLint config_attribs[] = {
+		EGL_SURFACE_TYPE, EGL_WINDOW_BIT | EGL_PIXMAP_BIT,
+		EGL_RED_SIZE, 1,
+		EGL_GREEN_SIZE, 1,
+		EGL_BLUE_SIZE, 1,
+		EGL_DEPTH_SIZE, 1,
+		EGL_RENDERABLE_TYPE, EGL_OPENGL_BIT,
+		EGL_NONE
+	};
+
+	display->egl.dpy = eglGetDisplay(display->egl_display);
+	assert(display->egl.dpy);
+
+	assert(eglInitialize(display->egl.dpy, &major, &minor));
+
+	assert(eglBindAPI(EGL_OPENGL_API));
+   	assert(eglChooseConfig(display->egl.dpy, config_attribs,
+				 &display->egl.conf, 1, &num_config));
+	assert(num_config == 1);
+
+	display->egl.ctx = eglCreateContext(display->egl.dpy, display->egl.conf,
+					    EGL_NO_CONTEXT, NULL);
+	assert(display->egl.ctx);
+}
+
+static void
+create_egl_window(struct display *display, struct window *window)
+{
+	struct wl_visual *visual;	
+
+	visual = wl_display_get_premultiplied_argb_visual(display->display);
+	window->egl_window = wl_egl_window_create(display->egl_display,
+						  window->surface,
+						  window->width,
+						  window->height,
+						  visual);
+
+	window->egl.surf =
+		eglCreateWindowSurface(display->egl.dpy, display->egl.conf,
+				       window->egl_window, NULL);
+	assert(window->egl.surf);
+	assert(eglMakeCurrent(display->egl.dpy,
+				window->egl.surf, window->egl.surf,
+				display->egl.ctx));
+}
+
+static void
+init_gl(struct window *window)
+{
+	GLfloat ar;
+
+	glViewport(0, 0, window->width, window->height);
+	ar = (GLfloat)window->width / (GLfloat)window->height;
+
+	glMatrixMode(GL_PROJECTION);
+	glLoadIdentity();
+	glFrustum(-ar, ar, -1, 1, 5.0, 60.0);
+
+	glMatrixMode(GL_MODELVIEW);
+	glLoadIdentity();
+	glTranslatef(0.0, 0.0, -10.0);
+}
+
+static void
+redraw(void *data, uint32_t time)
+{
+	struct window *window = data;
+	static const GLfloat verts[3][2] = {
+		{ -1, -1 },
+		{  1, -1 },
+		{  0,  1 }
+	};
+	static const GLfloat colors[3][3] = {
+		{ 1, 0, 1 },
+		{ 0, 1, 0 },
+		{ 0, 0, 1 }
+	};
+	static GLfloat speed = 0.2;
+	static uint32_t start_time = 0;
+	static uint32_t last_time = 0;
+	static int frames = 0;
+
+	if (start_time == 0)
+		start_time = time;
+	
+	++frames;
+	if ((time - last_time) >= 5000) {
+		printf("fps: %d\n", frames / 5);
+		last_time = time;
+		frames = 0;
+	}
+
+	glClearColor(0.0, 0.0, 0.0, 0.5);
+	glClear(GL_COLOR_BUFFER_BIT);
+
+	GLint foo;
+	glGetIntegerv(GL_DRAW_BUFFER, &foo),
+
+	glPushMatrix();
+	glRotatef(speed * (time-start_time), 0, 1, 0);
+
+	glVertexPointer(2, GL_FLOAT, 0, verts);
+	glColorPointer(3, GL_FLOAT, 0, colors);
+	glEnableClientState(GL_VERTEX_ARRAY);
+	glEnableClientState(GL_COLOR_ARRAY);
+
+	glDrawArrays(GL_TRIANGLES, 0, 3);
+
+	glDisableClientState(GL_VERTEX_ARRAY);
+	glDisableClientState(GL_COLOR_ARRAY);
+
+	glPopMatrix();
+
+	eglSwapBuffers(window->display->egl.dpy, window->egl.surf);
+}
+
+enum window_location {
+	WINDOW_INTERIOR = 0,
+	WINDOW_RESIZING_TOP = 1,
+	WINDOW_RESIZING_BOTTOM = 2,
+	WINDOW_RESIZING_LEFT = 4,
+	WINDOW_RESIZING_TOP_LEFT = 5,
+	WINDOW_RESIZING_BOTTOM_LEFT = 6,
+	WINDOW_RESIZING_RIGHT = 8,
+	WINDOW_RESIZING_TOP_RIGHT = 9,
+	WINDOW_RESIZING_BOTTOM_RIGHT = 10,
+	WINDOW_RESIZING_MASK = 15,
+	WINDOW_EXTERIOR = 16,
+	WINDOW_TITLEBAR = 17,
+	WINDOW_CLIENT_AREA = 18,
+};
+static void
+handle_configure(void *data, struct wl_shell *shell,
+		 uint32_t time, uint32_t edges,
+		 struct wl_surface *surface,
+		 int32_t width, int32_t height)
+{
+	struct window *window = wl_surface_get_user_data(surface);
+	int dx = 0;
+	int dy = 0;
+	int a_width, a_height;
+
+	wl_egl_window_get_attached_size(window->egl_window,
+					&a_width, &a_height);
+
+	if (edges & WINDOW_RESIZING_LEFT)
+		dx = a_width - width;
+
+	if (edges & WINDOW_RESIZING_TOP)
+		dy = a_height - height;
+
+	wl_egl_window_resize(window->egl_window, width, height, dx, dy);
+
+	window->width = width;
+	window->height = height;
+
+	glViewport(0, 0, window->width, window->height);
+}
+
+static const struct wl_shell_listener wayland_shell_listener = {
+	handle_configure,
+};
+
+static void
+display_handle_global(struct wl_display *display, uint32_t id,
+		      const char *interface, uint32_t version, void *data)
+{
+	struct display *d = data;
+
+	if (strcmp(interface, "compositor") == 0) {
+		d->interface.compositor = wl_compositor_create(display, id);
+	} else if (strcmp(interface, "shell") == 0) {
+		d->interface.shell = wl_shell_create(display, id);
+		wl_shell_add_listener(d->interface.shell, &wayland_shell_listener, d);
+	}
+}
+
+static int
+event_mask_update(uint32_t mask, void *data)
+{
+	struct display *d = data;
+
+	d->mask = mask;
+
+	return 0;
+}
+
+int
+main(int argc, char **argv)
+{
+	struct display display = { 0 };
+	struct window  window  = { 0 };
+
+	window.display = &display;
+	window.width  = 250;
+	window.height = 250;
+
+	display.display = wl_display_connect(NULL);
+	assert(display.display);
+
+	display.egl_display = wl_egl_display_create(display.display);
+	assert(display.egl_display);
+
+	wl_display_add_global_listener(display.display,
+				       display_handle_global, &display);
+	/* process connection events */
+	wl_display_iterate(display.display, WL_DISPLAY_READABLE);
+
+	init_egl(&display);
+	window.surface =
+		wl_compositor_create_surface(display.interface.compositor);
+	wl_surface_set_user_data(window.surface, &window);
+	create_egl_window(&display, &window);
+
+	init_gl(&window);
+
+	wl_surface_map_toplevel(window.surface);
+  
+	wl_display_get_fd(display.display, event_mask_update, &display);
+
+	while (true) {
+		struct timeval tv;
+		uint32_t msec;
+
+		gettimeofday(&tv, NULL);
+		redraw(&window, tv.tv_sec * 1000 + tv.tv_usec / 1000);
+
+		wl_display_iterate(display.display, display.mask);
+	}
+
+	return 0;
+}