/*

* Copyright © 2011 Benjamin Franzke

*

* Permission to use, copy, modify, distribute, and sell this software and its

* documentation for any purpose is hereby granted without fee, provided that

* the above copyright notice appear in all copies and that both that copyright

* notice and this permission notice appear in supporting documentation, and

* that the name of the copyright holders not be used in advertising or

* publicity pertaining to distribution of the software without specific,

* written prior permission. The copyright holders make no representations

* about the suitability of this software for any purpose. It is provided "as

* is" without express or implied warranty.

*

* THE COPYRIGHT HOLDERS DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,

* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO

* EVENT SHALL THE COPYRIGHT HOLDERS BE LIABLE FOR ANY SPECIAL, INDIRECT OR

* CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,

* DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER

* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE

* OF THIS SOFTWARE.

*/

#include <stdio.h>

#include <stdlib.h>

#include <string.h>

#include <stdbool.h>

#include <math.h>

#include <assert.h>

#include <signal.h>

#include <linux/input.h>

#include <wayland-client.h>

#include <wayland-egl.h>

#include <wayland-cursor.h>

#include <GLES2/gl2.h>

#include <GLES2/gl2ext.h>

#include <EGL/egl.h>

#include <EGL/eglext.h>

#ifndef EGL_EXT_swap_buffers_with_damage

#define EGL_EXT_swap_buffers_with_damage 1

typedef EGLBoolean (EGLAPIENTRYP PFNEGLSWAPBUFFERSWITHDAMAGEEXTPROC)(EGLDisplay dpy, EGLSurface surface, EGLint *rects, EGLint n_rects);

#endif

#ifndef EGL_EXT_buffer_age

#define EGL_EXT_buffer_age 1

#define EGL_BUFFER_AGE_EXT 0x313D

#endif

struct window;

struct seat;

struct display {

};

struct geometry {

int width, height;

};

struct window {

};

/* Load binary shader program toggle */

int g_UseBinary = 0;

/* Load binary shader program toggle */

int g_CompileBinary = 0;

static const char *vert_shader_text =

"uniform mat4 rotation;\n"

"attribute vec4 pos;\n"

"attribute vec4 color;\n"

"varying vec4 v_color;\n"

"void main() {\n"

" gl_Position = rotation * pos;\n"

" v_color = color;\n"

"}\n";

static const char *frag_shader_text =

"precision mediump float;\n"

"varying vec4 v_color;\n"

"void main() {\n"

" gl_FragColor = v_color;\n"

"}\n";

static int running = 1;

static void

init_egl(struct display *display, struct window *window)

{

static const EGLint context_attribs[] = {

EGL_CONTEXT_CLIENT_VERSION, 2,

EGL_NONE

};

const char *extensions;

EGLint config_attribs[] = {

EGL_SURFACE_TYPE, EGL_WINDOW_BIT,

EGL_RED_SIZE, 1,

EGL_GREEN_SIZE, 1,

EGL_BLUE_SIZE, 1,

EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,

EGL_NONE

};

EGLint major, minor, n, count, i, size;

EGLConfig *configs;

EGLBoolean ret;

if (window->opaque || window->buffer_size == 16)

config_attribs[9] = 0;

display->egl.dpy = eglGetDisplay(display->display);

assert(display->egl.dpy);

ret = eglInitialize(display->egl.dpy, &major, &minor);

assert(ret == EGL_TRUE);

ret = eglBindAPI(EGL_OPENGL_ES_API);

assert(ret == EGL_TRUE);

if (!eglGetConfigs(display->egl.dpy, NULL, 0, &count) || count < 1)

assert(0);

configs = calloc(count, sizeof *configs);

assert(configs);

ret = eglChooseConfig(display->egl.dpy, config_attribs,

configs, count, &n);

assert(ret && n >= 1);

for (i = 0; i < n; i++) {

eglGetConfigAttrib(display->egl.dpy,

configs[i], EGL_BUFFER_SIZE, &size);

if (window->buffer_size == size) {

display->egl.conf = configs[i];

break;

}

}

free(configs);

if (display->egl.conf == NULL) {

fprintf(stderr, "did not find config with buffer size %d\n",

window->buffer_size);

exit(EXIT_FAILURE);

}

display->egl.ctx = eglCreateContext(display->egl.dpy,

display->egl.conf,

EGL_NO_CONTEXT, context_attribs);

assert(display->egl.ctx);

display->swap_buffers_with_damage = NULL;

extensions = eglQueryString(display->egl.dpy, EGL_EXTENSIONS);

if (extensions &&

strstr(extensions, "EGL_EXT_swap_buffers_with_damage") &&

strstr(extensions, "EGL_EXT_buffer_age"))

display->swap_buffers_with_damage =

(PFNEGLSWAPBUFFERSWITHDAMAGEEXTPROC)

eglGetProcAddress("eglSwapBuffersWithDamageEXT");

if (display->swap_buffers_with_damage)

printf("has EGL_EXT_buffer_age and EGL_EXT_swap_buffers_with_damage\n");

}

static void

fini_egl(struct display *display)

{

eglTerminate(display->egl.dpy);

eglReleaseThread();

}

PFNGLGETPROGRAMBINARYOESPROC myglGetProgramBinaryOES;

PFNGLPROGRAMBINARYOESPROC myglProgramBinaryOES;

///////////////////////////////////////////////////////////////////////////////////////////////////

// Loads, compiles, and links the shader and then saves the binary code to a file

void compile_program_binary( GLuint shader_program, const char* BINARY_FILENAME)

{

// load the program

void* buffer = NULL;

GLint bin_size = -1;

GLenum bin_format = -1;

// get the length of the binary code to be retrieved

glGetProgramiv(shader_program, GL_PROGRAM_BINARY_LENGTH_OES, &bin_size);

switch (bin_size) {

case GL_INVALID_ENUM: fprintf(stderr, "glGetProgramiv: GL_INVALID_ENUM\n");

return;

case GL_INVALID_VALUE: fprintf(stderr, "glGetProgramiv: GL_INVALID_VALUE\n");

return;

case GL_INVALID_OPERATION: fprintf(stderr, "glGetProgramiv: GL_INVALID_OPERATION\n");

return;

}

printf("Binary program length: %d bytes\n", bin_size);

// retrieve binary code & code format

buffer = malloc(bin_size);

GLsizei bytesWritten;

myglGetProgramBinaryOES = (PFNGLGETPROGRAMBINARYOESPROC)eglGetProcAddress("glGetProgramBinaryOES");

if (!myglGetProgramBinaryOES) {

fprintf(stderr, "Can not get glGetProgramBinaryOES function");

exit(EXIT_FAILURE);

}

myglGetProgramBinaryOES (shader_program, bin_size, &bytesWritten, &bin_format, buffer);

// write binary code to file

FILE *bShFile = fopen(BINARY_FILENAME, "wb");

if (!bShFile) {

fprintf(stderr, "Error: cant write compiled shader to file: %s\n", BINARY_FILENAME);

}

size_t bytes = fwrite(buffer, bytesWritten, 1, bShFile);

printf ("Wrote %d bytes to %s. Binary format: 0x%x\n", bytesWritten, BINARY_FILENAME, bin_format);

fclose(bShFile);

free(buffer);

}

void load_program_binary(const char* myBinaryFileName, GLenum binaryFormat, GLuint progObj)

{

GLint binaryLength;

void* binary;

GLint success;

FILE* infile;

//

// Read the program binary

//

infile = fopen(myBinaryFileName, "rb");

fseek(infile, 0, SEEK_END);

binaryLength = (GLint)ftell(infile);

binary = (void*)malloc(binaryLength);

fseek(infile, 0, SEEK_SET);

fread(binary, binaryLength, 1, infile);

fclose(infile);

myglProgramBinaryOES = (PFNGLPROGRAMBINARYOESPROC)eglGetProcAddress("glProgramBinaryOES");

if (!myglProgramBinaryOES) {

fprintf(stderr, "Can not get glProgramBinaryOES function\n");

exit(EXIT_FAILURE);

}

//

// Load the binary into the program object -- no need to link!

//

myglProgramBinaryOES(progObj, binaryFormat, binary, binaryLength);

free(binary);

glGetProgramiv(progObj, GL_LINK_STATUS, &success);

if (!success)

{

fprintf(stderr, "Can not load program binary %s\n", myBinaryFileName);

exit(EXIT_FAILURE);

}

}

static GLuint

create_shader(struct window *window, const char *source, GLenum shader_type)

{

GLuint shader;

GLint status;

shader = glCreateShader(shader_type);

assert(shader != 0);

glShaderSource(shader, 1, (const char **) &source, NULL);

glCompileShader(shader);

glGetShaderiv(shader, GL_COMPILE_STATUS, &status);

if (!status) {

char log[1000];

GLsizei len;

glGetShaderInfoLog(shader, 1000, &len, log);

fprintf(stderr, "Error: compiling %s: %*s\n",

shader_type == GL_VERTEX_SHADER ? "vertex" : "fragment",

len, log);

exit(1);

}

return shader;

}

static void

init_gl(struct window *window)

{

GLuint frag, vert;

GLuint program;

GLint status;

frag = create_shader(window, frag_shader_text, GL_FRAGMENT_SHADER);

vert = create_shader(window, vert_shader_text, GL_VERTEX_SHADER);

program = glCreateProgram();

if (g_UseBinary) {

load_program_binary("simple-egl-shader.fx", 0x9130, program);

glUseProgram(program);

window->gl.pos = 0;

window->gl.col = 1;

glBindAttribLocation(program, window->gl.pos, "pos");

glBindAttribLocation(program, window->gl.col, "color");

}

else

{

glAttachShader(program, frag);

glAttachShader(program, vert);

glLinkProgram(program);

glGetProgramiv(program, GL_LINK_STATUS, &status);

if (!status) {

char log[1000];

GLsizei len;

glGetProgramInfoLog(program, 1000, &len, log);

fprintf(stderr, "Error: linking:\n%*s\n", len, log);

exit(1);

}

if (g_CompileBinary) {

compile_program_binary(program, "simple-egl-shader.fx");

exit(EXIT_SUCCESS);

}

glUseProgram(program);

window->gl.pos = 0;

window->gl.col = 1;

glBindAttribLocation(program, window->gl.pos, "pos");

glBindAttribLocation(program, window->gl.col, "color");

glLinkProgram(program);

}

window->gl.rotation_uniform =

glGetUniformLocation(program, "rotation");

}

static void

handle_ping(void *data, struct wl_shell_surface *shell_surface,

uint32_t serial)

{

wl_shell_surface_pong(shell_surface, serial);

}

static void

handle_configure(void *data, struct wl_shell_surface *shell_surface,

uint32_t edges, int32_t width, int32_t height)

{

struct window *window = data;

if (window->native)

wl_egl_window_resize(window->native, width, height, 0, 0);

window->geometry.width = width;

window->geometry.height = height;

if (!window->fullscreen)

window->window_size = window->geometry;

}

static void

handle_popup_done(void *data, struct wl_shell_surface *shell_surface)

{

}

static const struct wl_shell_surface_listener shell_surface_listener = {

handle_ping,

handle_configure,

handle_popup_done

};

static void

configure_callback(void *data, struct wl_callback *callback, uint32_t time)

{

struct window *window = data;

wl_callback_destroy(callback);

window->configured = 1;

}

static struct wl_callback_listener configure_callback_listener = {

configure_callback,

};

static void

set_fullscreen(struct window *window, int fullscreen)

{

struct wl_callback *callback;

window->fullscreen = fullscreen;

window->configured = 0;

if (fullscreen) {

wl_shell_surface_set_fullscreen(window->shell_surface,

WL_SHELL_SURFACE_FULLSCREEN_METHOD_DEFAULT,

0, NULL);

callback = wl_display_sync(window->display->display);

wl_callback_add_listener(callback,

&configure_callback_listener,

window);

} else {

wl_shell_surface_set_toplevel(window->shell_surface);

handle_configure(window, window->shell_surface, 0,

window->window_size.width,

window->window_size.height);

window->configured = 1;

}

}

static void

create_surface(struct window *window)

{

struct display *display = window->display;

EGLBoolean ret;

window->surface = wl_compositor_create_surface(display->compositor);

window->shell_surface = wl_shell_get_shell_surface(display->shell,

window->surface);

wl_shell_surface_add_listener(window->shell_surface,

&shell_surface_listener, window);

window->native =

wl_egl_window_create(window->surface,

window->window_size.width,

window->window_size.height);

window->egl_surface =

eglCreateWindowSurface(display->egl.dpy,

display->egl.conf,

window->native, NULL);

wl_shell_surface_set_title(window->shell_surface, "simple-egl");

ret = eglMakeCurrent(window->display->egl.dpy, window->egl_surface,

window->egl_surface, window->display->egl.ctx);

assert(ret == EGL_TRUE);

if (!window->frame_sync)

eglSwapInterval(display->egl.dpy, 0);

set_fullscreen(window, window->fullscreen);

}

static void

destroy_surface(struct window *window)

{

/* Required, otherwise segfault in egl_dri2.c: dri2_make_current()

* on eglReleaseThread(). */

eglMakeCurrent(window->display->egl.dpy, EGL_NO_SURFACE, EGL_NO_SURFACE,

EGL_NO_CONTEXT);

eglDestroySurface(window->display->egl.dpy, window->egl_surface);

wl_egl_window_destroy(window->native);

wl_shell_surface_destroy(window->shell_surface);

wl_surface_destroy(window->surface);

if (window->callback)

wl_callback_destroy(window->callback);

}

static const struct wl_callback_listener frame_listener;

static void

redraw(void *data, struct wl_callback *callback, uint32_t time)

{

struct window *window = data;

struct display *display = window->display;

static const GLfloat verts[3][2] = {

{ -0.5, -0.5 },

{ 0.5, -0.5 },

{ 0, 0.5 }

};

static const GLfloat colors[3][3] = {

{ 1, 0, 0 },

{ 0, 1, 0 },

{ 0, 0, 1 }

};

GLfloat angle;

GLfloat rotation[4][4] = {

{ 1, 0, 0, 0 },

{ 0, 1, 0, 0 },

{ 0, 0, 1, 0 },

{ 0, 0, 0, 1 }

};

static const int32_t speed_div = 5, benchmark_interval = 5;

struct wl_region *region;

EGLint rect[4];

EGLint buffer_age = 0;

struct timeval tv;

assert(window->callback == callback);

window->callback = NULL;

if (callback)

wl_callback_destroy(callback);

if (!window->configured)

return;

gettimeofday(&tv, NULL);

time = tv.tv_sec * 1000 + tv.tv_usec / 1000;

if (window->frames == 0)

window->benchmark_time = time;

if (time - window->benchmark_time > (benchmark_interval * 1000)) {

printf("%d frames in %d seconds: %f fps\n",

window->frames,

benchmark_interval,

(float) window->frames / benchmark_interval);

window->benchmark_time = time;

window->frames = 0;

}

angle = (time / speed_div) % 360 * M_PI / 180.0;

rotation[0][0] = cos(angle);

rotation[0][2] = sin(angle);

rotation[2][0] = -sin(angle);

rotation[2][2] = cos(angle);

if (display->swap_buffers_with_damage)

eglQuerySurface(display->egl.dpy, window->egl_surface,

EGL_BUFFER_AGE_EXT, &buffer_age);

glViewport(0, 0, window->geometry.width, window->geometry.height);

glUniformMatrix4fv(window->gl.rotation_uniform, 1, GL_FALSE,

(GLfloat *) rotation);

glClearColor(0.0, 0.0, 0.0, 0.5);

glClear(GL_COLOR_BUFFER_BIT);

glVertexAttribPointer(window->gl.pos, 2, GL_FLOAT, GL_FALSE, 0, verts);

glVertexAttribPointer(window->gl.col, 3, GL_FLOAT, GL_FALSE, 0, colors);

glEnableVertexAttribArray(window->gl.pos);

glEnableVertexAttribArray(window->gl.col);

glDrawArrays(GL_TRIANGLES, 0, 3);

glDisableVertexAttribArray(window->gl.pos);

glDisableVertexAttribArray(window->gl.col);

if (window->opaque || window->fullscreen) {

region = wl_compositor_create_region(window->display->compositor);

wl_region_add(region, 0, 0,

window->geometry.width,

window->geometry.height);

wl_surface_set_opaque_region(window->surface, region);

wl_region_destroy(region);

} else {

wl_surface_set_opaque_region(window->surface, NULL);

}

if (display->swap_buffers_with_damage && buffer_age > 0) {

rect[0] = window->geometry.width / 4 - 1;

rect[1] = window->geometry.height / 4 - 1;

rect[2] = window->geometry.width / 2 + 2;

rect[3] = window->geometry.height / 2 + 2;

display->swap_buffers_with_damage(display->egl.dpy,

window->egl_surface,

rect, 1);

} else {

eglSwapBuffers(display->egl.dpy, window->egl_surface);

}

window->frames++;

}

static const struct wl_callback_listener frame_listener = {

redraw

};

static void

pointer_handle_enter(void *data, struct wl_pointer *pointer,

uint32_t serial, struct wl_surface *surface,

wl_fixed_t sx, wl_fixed_t sy)

{

struct display *display = data;

struct wl_buffer *buffer;

struct wl_cursor *cursor = display->default_cursor;

struct wl_cursor_image *image;

if (display->window->fullscreen)

wl_pointer_set_cursor(pointer, serial, NULL, 0, 0);

else if (cursor) {

image = display->default_cursor->images[0];

buffer = wl_cursor_image_get_buffer(image);

wl_pointer_set_cursor(pointer, serial,

display->cursor_surface,

image->hotspot_x,

image->hotspot_y);

wl_surface_attach(display->cursor_surface, buffer, 0, 0);

wl_surface_damage(display->cursor_surface, 0, 0,

image->width, image->height);

wl_surface_commit(display->cursor_surface);

}

}

static void

pointer_handle_leave(void *data, struct wl_pointer *pointer,

uint32_t serial, struct wl_surface *surface)

{

}

static void

pointer_handle_motion(void *data, struct wl_pointer *pointer,

uint32_t time, wl_fixed_t sx, wl_fixed_t sy)

{

}

static void

pointer_handle_button(void *data, struct wl_pointer *wl_pointer,

uint32_t serial, uint32_t time, uint32_t button,

uint32_t state)

{

struct display *display = data;

if (button == BTN_LEFT && state == WL_POINTER_BUTTON_STATE_PRESSED)

wl_shell_surface_move(display->window->shell_surface,

display->seat, serial);

}

static void

pointer_handle_axis(void *data, struct wl_pointer *wl_pointer,

uint32_t time, uint32_t axis, wl_fixed_t value)

{

}

static const struct wl_pointer_listener pointer_listener = {

pointer_handle_enter,

pointer_handle_leave,

pointer_handle_motion,

pointer_handle_button,

pointer_handle_axis,

};

static void

touch_handle_down(void *data, struct wl_touch *wl_touch,

uint32_t serial, uint32_t time, struct wl_surface *surface,

int32_t id, wl_fixed_t x_w, wl_fixed_t y_w)

{

struct display *d = (struct display *)data;

wl_shell_surface_move(d->window->shell_surface, d->seat, serial);

}

static void

touch_handle_up(void *data, struct wl_touch *wl_touch,

uint32_t serial, uint32_t time, int32_t id)

{

}

static void

touch_handle_motion(void *data, struct wl_touch *wl_touch,

uint32_t time, int32_t id, wl_fixed_t x_w, wl_fixed_t y_w)

{

}

static void

touch_handle_frame(void *data, struct wl_touch *wl_touch)

{

}

static void

touch_handle_cancel(void *data, struct wl_touch *wl_touch)

{

}

static const struct wl_touch_listener touch_listener = {

touch_handle_down,

touch_handle_up,

touch_handle_motion,

touch_handle_frame,

touch_handle_cancel,

};

static void

keyboard_handle_keymap(void *data, struct wl_keyboard *keyboard,

uint32_t format, int fd, uint32_t size)

{

}

static void

keyboard_handle_enter(void *data, struct wl_keyboard *keyboard,

uint32_t serial, struct wl_surface *surface,

struct wl_array *keys)

{

}

static void

keyboard_handle_leave(void *data, struct wl_keyboard *keyboard,

uint32_t serial, struct wl_surface *surface)

{

}

static void

keyboard_handle_key(void *data, struct wl_keyboard *keyboard,

uint32_t serial, uint32_t time, uint32_t key,

uint32_t state)

{

struct display *d = data;

if (key == KEY_F11 && state)

set_fullscreen(d->window, d->window->fullscreen ^ 1);

else if (key == KEY_ESC && state)

running = 0;

}

static void

keyboard_handle_modifiers(void *data, struct wl_keyboard *keyboard,

uint32_t serial, uint32_t mods_depressed,

uint32_t mods_latched, uint32_t mods_locked,

uint32_t group)

{

}

static const struct wl_keyboard_listener keyboard_listener = {

keyboard_handle_keymap,

keyboard_handle_enter,

keyboard_handle_leave,

keyboard_handle_key,

keyboard_handle_modifiers,

};

static void

seat_handle_capabilities(void *data, struct wl_seat *seat,

enum wl_seat_capability caps)

{

struct display *d = data;

if ((caps & WL_SEAT_CAPABILITY_POINTER) && !d->pointer) {

d->pointer = wl_seat_get_pointer(seat);

wl_pointer_add_listener(d->pointer, &pointer_listener, d);

} else if (!(caps & WL_SEAT_CAPABILITY_POINTER) && d->pointer) {

wl_pointer_destroy(d->pointer);

d->pointer = NULL;

}

if ((caps & WL_SEAT_CAPABILITY_KEYBOARD) && !d->keyboard) {

d->keyboard = wl_seat_get_keyboard(seat);

wl_keyboard_add_listener(d->keyboard, &keyboard_listener, d);

} else if (!(caps & WL_SEAT_CAPABILITY_KEYBOARD) && d->keyboard) {

wl_keyboard_destroy(d->keyboard);

d->keyboard = NULL;

}

if ((caps & WL_SEAT_CAPABILITY_TOUCH) && !d->touch) {

d->touch = wl_seat_get_touch(seat);

wl_touch_set_user_data(d->touch, d);

wl_touch_add_listener(d->touch, &touch_listener, d);

} else if (!(caps & WL_SEAT_CAPABILITY_TOUCH) && d->touch) {

wl_touch_destroy(d->touch);

d->touch = NULL;

}

}

static const struct wl_seat_listener seat_listener = {

seat_handle_capabilities,

};

static void

registry_handle_global(void *data, struct wl_registry *registry,

uint32_t name, const char *interface, uint32_t version)

{

struct display *d = data;

if (strcmp(interface, "wl_compositor") == 0) {

d->compositor =

wl_registry_bind(registry, name,

&wl_compositor_interface, 1);

} else if (strcmp(interface, "wl_shell") == 0) {

d->shell = wl_registry_bind(registry, name,

&wl_shell_interface, 1);

} else if (strcmp(interface, "wl_seat") == 0) {

d->seat = wl_registry_bind(registry, name,

&wl_seat_interface, 1);

wl_seat_add_listener(d->seat, &seat_listener, d);

} else if (strcmp(interface, "wl_shm") == 0) {

d->shm = wl_registry_bind(registry, name,

&wl_shm_interface, 1);

d->cursor_theme = wl_cursor_theme_load(NULL, 32, d->shm);

d->default_cursor =

wl_cursor_theme_get_cursor(d->cursor_theme, "left_ptr");

}

}

static void

registry_handle_global_remove(void *data, struct wl_registry *registry,

uint32_t name)

{

}

static const struct wl_registry_listener registry_listener = {

registry_handle_global,

registry_handle_global_remove

};

static void

signal_int(int signum)

{

running = 0;

}

static void

usage(int error_code)

{

fprintf(stderr, "Usage: simple-egl [OPTIONS]\n\n"

" -f\tRun in fullscreen mode\n"

" -o\tCreate an opaque surface\n"

" -s\tUse a 16 bpp EGL config\n"

" -b\tDon't sync to compositor redraw (eglSwapInterval 0)\n"

" -h\tThis help text\n\n");

exit(error_code);

}

int

main(int argc, char **argv)

{

struct sigaction sigint;

struct display display = { 0 };

struct window window = { 0 };

int i, ret = 0;

window.display = &display;

display.window = &window;

window.window_size.width = 250;

window.window_size.height = 250;

window.buffer_size = 32;

window.frame_sync = 1;

for (i = 1; i < argc; i++) {

if (strcmp("-f", argv[i]) == 0)

window.fullscreen = 1;

else if (strcmp("-o", argv[i]) == 0)

window.opaque = 1;

else if (strcmp("-s", argv[i]) == 0)

window.buffer_size = 16;

else if (strcmp("-b", argv[i]) == 0)

window.frame_sync = 0;

else if (strcmp("--compile-binary-shader", argv[i]) == 0)

g_CompileBinary = 1;

else if (strcmp("--use-binary-shader", argv[i]) == 0)

g_UseBinary = 1;

else if (strcmp("-h", argv[i]) == 0)

usage(EXIT_SUCCESS);

else

usage(EXIT_FAILURE);

}

display.display = wl_display_connect(NULL);

assert(display.display);

display.registry = wl_display_get_registry(display.display);

wl_registry_add_listener(display.registry,

&registry_listener, &display);

wl_display_dispatch(display.display);

init_egl(&display, &window);

create_surface(&window);

init_gl(&window);

display.cursor_surface =

wl_compositor_create_surface(display.compositor);

sigint.sa_handler = signal_int;

sigemptyset(&sigint.sa_mask);

sigint.sa_flags = SA_RESETHAND;

sigaction(SIGINT, &sigint, NULL);

/* The mainloop here is a little subtle. Redrawing will cause

* EGL to read events so we can just call

* wl_display_dispatch_pending() to handle any events that got

* queued up as a side effect. */

while (running && ret != -1) {

wl_display_dispatch_pending(display.display);

while (!window.configured)

wl_display_dispatch(display.display);

redraw(&window, NULL, 0);

}

fprintf(stderr, "simple-egl exiting\n");

destroy_surface(&window);

fini_egl(&display);

wl_surface_destroy(display.cursor_surface);

if (display.cursor_theme)

wl_cursor_theme_destroy(display.cursor_theme);

if (display.shell)

wl_shell_destroy(display.shell);

if (display.compositor)

wl_compositor_destroy(display.compositor);

wl_registry_destroy(display.registry);

wl_display_flush(display.display);

wl_display_disconnect(display.display);

return 0;

}