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weston/compositor/compositor.c

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/*
* Copyright © 2010-2011 Intel Corporation
* Copyright © 2008-2011 Kristian Høgsberg
*
* 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.
*/
#define _GNU_SOURCE
#include "config.h"
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include <limits.h>
#include <stdarg.h>
#include <assert.h>
#include <sys/ioctl.h>
#include <sys/wait.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <fcntl.h>
#include <unistd.h>
#include <math.h>
#include <linux/input.h>
#include <dlfcn.h>
#include <getopt.h>
#include <signal.h>
#include <wayland-server.h>
#include "compositor.h"
static const char *option_socket_name = NULL;
static struct wl_list child_process_list;
static int
sigchld_handler(int signal_number, void *data)
{
struct wlsc_process *p;
int status;
pid_t pid;
pid = wait(&status);
wl_list_for_each(p, &child_process_list, link) {
if (p->pid == pid)
break;
}
if (&p->link == &child_process_list) {
fprintf(stderr, "unknown child process exited\n");
return 1;
}
wl_list_remove(&p->link);
p->cleanup(p, status);
return 1;
}
WL_EXPORT void
wlsc_watch_process(struct wlsc_process *process)
{
wl_list_insert(&child_process_list, &process->link);
}
static void
child_client_exec(int sockfd, const char *path)
{
int clientfd;
char s[32];
sigset_t allsigs;
/* do not give our signal mask to the new process */
sigfillset(&allsigs);
sigprocmask(SIG_UNBLOCK, &allsigs, NULL);
/* SOCK_CLOEXEC closes both ends, so we dup the fd to get a
* non-CLOEXEC fd to pass through exec. */
clientfd = dup(sockfd);
if (clientfd == -1) {
fprintf(stderr, "compositor: dup failed: %m\n");
return;
}
snprintf(s, sizeof s, "%d", clientfd);
setenv("WAYLAND_SOCKET", s, 1);
if (execl(path, path, NULL) < 0)
fprintf(stderr, "compositor: executing '%s' failed: %m\n",
path);
}
WL_EXPORT struct wl_client *
wlsc_client_launch(struct wlsc_compositor *compositor,
struct wlsc_process *proc,
const char *path,
wlsc_process_cleanup_func_t cleanup)
{
int sv[2];
pid_t pid;
struct wl_client *client;
if (socketpair(AF_UNIX, SOCK_STREAM | SOCK_CLOEXEC, 0, sv) < 0) {
fprintf(stderr, "wlsc_client_launch: "
"socketpair failed while launching '%s': %m\n",
path);
return NULL;
}
pid = fork();
if (pid == -1) {
close(sv[0]);
close(sv[1]);
fprintf(stderr, "wlsc_client_launch: "
"fork failed while launching '%s': %m\n", path);
return NULL;
}
if (pid == 0) {
child_client_exec(sv[1], path);
exit(-1);
}
close(sv[1]);
client = wl_client_create(compositor->wl_display, sv[0]);
if (!client) {
close(sv[0]);
fprintf(stderr, "wlsc_client_launch: "
"wl_client_create failed while launching '%s'.\n",
path);
return NULL;
}
proc->pid = pid;
proc->cleanup = cleanup;
wlsc_watch_process(proc);
return client;
}
static void
surface_handle_buffer_destroy(struct wl_listener *listener,
struct wl_resource *resource, uint32_t time)
{
struct wlsc_surface *es = container_of(listener, struct wlsc_surface,
buffer_destroy_listener);
es->buffer = NULL;
}
static void
output_handle_scanout_buffer_destroy(struct wl_listener *listener,
struct wl_resource *resource,
uint32_t time)
{
struct wlsc_output *output =
container_of(listener, struct wlsc_output,
scanout_buffer_destroy_listener);
output->scanout_buffer = NULL;
if (!output->pending_scanout_buffer)
wlsc_compositor_schedule_repaint(output->compositor);
}
static void
output_handle_pending_scanout_buffer_destroy(struct wl_listener *listener,
struct wl_resource *resource,
uint32_t time)
{
struct wlsc_output *output =
container_of(listener, struct wlsc_output,
pending_scanout_buffer_destroy_listener);
output->pending_scanout_buffer = NULL;
wlsc_compositor_schedule_repaint(output->compositor);
}
WL_EXPORT struct wlsc_surface *
wlsc_surface_create(struct wlsc_compositor *compositor,
int32_t x, int32_t y, int32_t width, int32_t height)
{
struct wlsc_surface *surface;
surface = calloc(1, sizeof *surface);
if (surface == NULL)
return NULL;
wl_list_init(&surface->link);
wl_list_init(&surface->buffer_link);
glGenTextures(1, &surface->texture);
glBindTexture(GL_TEXTURE_2D, surface->texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
surface->surface.resource.client = NULL;
surface->compositor = compositor;
surface->visual = WLSC_NONE_VISUAL;
surface->image = EGL_NO_IMAGE_KHR;
surface->saved_texture = 0;
surface->x = x;
surface->y = y;
surface->width = width;
surface->height = height;
surface->alpha = 255;
surface->fullscreen_output = NULL;
surface->buffer = NULL;
surface->output = NULL;
pixman_region32_init(&surface->damage);
pixman_region32_init(&surface->opaque);
wl_list_init(&surface->frame_callback_list);
surface->buffer_destroy_listener.func = surface_handle_buffer_destroy;
surface->transform = NULL;
return surface;
}
WL_EXPORT void
wlsc_surface_damage_rectangle(struct wlsc_surface *surface,
int32_t x, int32_t y,
int32_t width, int32_t height)
{
struct wlsc_compositor *compositor = surface->compositor;
pixman_region32_union_rect(&surface->damage,
&surface->damage,
surface->x + x, surface->y + y,
width, height);
wlsc_compositor_schedule_repaint(compositor);
}
WL_EXPORT void
wlsc_surface_damage(struct wlsc_surface *surface)
{
wlsc_surface_damage_rectangle(surface, 0, 0,
surface->width, surface->height);
}
WL_EXPORT void
wlsc_surface_damage_below(struct wlsc_surface *surface)
{
struct wlsc_surface *below;
if (surface->output == NULL)
return;
if (surface->link.next == &surface->compositor->surface_list)
return;
below = container_of(surface->link.next, struct wlsc_surface, link);
pixman_region32_union_rect(&below->damage,
&below->damage,
surface->x, surface->y,
surface->width, surface->height);
wlsc_compositor_schedule_repaint(surface->compositor);
}
WL_EXPORT void
wlsc_surface_configure(struct wlsc_surface *surface,
int x, int y, int width, int height)
{
wlsc_surface_damage_below(surface);
surface->x = x;
surface->y = y;
surface->width = width;
surface->height = height;
wlsc_surface_assign_output(surface);
wlsc_surface_damage(surface);
pixman_region32_fini(&surface->opaque);
if (surface->visual == WLSC_RGB_VISUAL)
pixman_region32_init_rect(&surface->opaque,
surface->x, surface->y,
surface->width, surface->height);
else
pixman_region32_init(&surface->opaque);
}
WL_EXPORT uint32_t
wlsc_compositor_get_time(void)
{
struct timeval tv;
gettimeofday(&tv, NULL);
return tv.tv_sec * 1000 + tv.tv_usec / 1000;
}
WL_EXPORT void
wlsc_compositor_repick(struct wlsc_compositor *compositor)
{
struct wlsc_input_device *device;
struct wlsc_surface *surface;
int32_t sx, sy;
uint32_t time;
if (!compositor->focus)
return;
time = wlsc_compositor_get_time();
wl_list_for_each(device, &compositor->input_device_list, link) {
if (device->input_device.grab)
continue;
surface = pick_surface(&device->input_device, &sx, &sy);
wl_input_device_set_pointer_focus(&device->input_device,
&surface->surface,
time,
device->input_device.x,
device->input_device.y,
sx, sy);
}
}
static void
destroy_surface(struct wl_resource *resource)
{
struct wlsc_surface *surface =
container_of(resource, struct wlsc_surface, surface.resource);
struct wlsc_compositor *compositor = surface->compositor;
wlsc_surface_damage_below(surface);
wl_list_remove(&surface->link);
wlsc_compositor_repick(compositor);
if (surface->saved_texture == 0)
glDeleteTextures(1, &surface->texture);
else
glDeleteTextures(1, &surface->saved_texture);
if (surface->buffer)
wl_list_remove(&surface->buffer_destroy_listener.link);
if (surface->image != EGL_NO_IMAGE_KHR)
compositor->destroy_image(compositor->display,
surface->image);
wl_list_remove(&surface->buffer_link);
free(surface);
}
static void
wlsc_buffer_attach(struct wl_buffer *buffer, struct wl_surface *surface)
{
struct wlsc_surface *es = (struct wlsc_surface *) surface;
struct wlsc_compositor *ec = es->compositor;
struct wl_list *surfaces_attached_to;
if (es->saved_texture != 0)
es->texture = es->saved_texture;
glBindTexture(GL_TEXTURE_2D, es->texture);
if (wl_buffer_is_shm(buffer)) {
/* Unbind any EGLImage texture that may be bound, so we don't
* overwrite it.*/
glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
0, 0, 0, GL_BGRA_EXT, GL_UNSIGNED_BYTE, NULL);
es->pitch = wl_shm_buffer_get_stride(buffer) / 4;
glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
es->pitch, buffer->height, 0,
GL_BGRA_EXT, GL_UNSIGNED_BYTE,
wl_shm_buffer_get_data(buffer));
switch (wl_shm_buffer_get_format(buffer)) {
case WL_SHM_FORMAT_ARGB32:
es->visual = WLSC_ARGB_VISUAL;
break;
case WL_SHM_FORMAT_PREMULTIPLIED_ARGB32:
es->visual = WLSC_PREMUL_ARGB_VISUAL;
break;
case WL_SHM_FORMAT_XRGB32:
es->visual = WLSC_RGB_VISUAL;
break;
}
surfaces_attached_to = buffer->user_data;
wl_list_remove(&es->buffer_link);
wl_list_insert(surfaces_attached_to, &es->buffer_link);
} else {
if (es->image != EGL_NO_IMAGE_KHR)
ec->destroy_image(ec->display, es->image);
es->image = ec->create_image(ec->display, NULL,
EGL_WAYLAND_BUFFER_WL,
buffer, NULL);
ec->image_target_texture_2d(GL_TEXTURE_2D, es->image);
/* FIXME: we need to get the visual from the wl_buffer */
es->visual = WLSC_PREMUL_ARGB_VISUAL;
es->pitch = es->width;
}
}
static int
texture_region(struct wlsc_surface *es, pixman_region32_t *region)
{
struct wlsc_compositor *ec = es->compositor;
GLfloat *v, inv_width, inv_height;
pixman_box32_t *rectangles;
unsigned int *p;
int i, n;
rectangles = pixman_region32_rectangles(region, &n);
v = wl_array_add(&ec->vertices, n * 16 * sizeof *v);
p = wl_array_add(&ec->indices, n * 6 * sizeof *p);
inv_width = 1.0 / es->pitch;
inv_height = 1.0 / es->height;
for (i = 0; i < n; i++, v += 16, p += 6) {
v[ 0] = rectangles[i].x1;
v[ 1] = rectangles[i].y1;
v[ 2] = (GLfloat) (rectangles[i].x1 - es->x) * inv_width;
v[ 3] = (GLfloat) (rectangles[i].y1 - es->y) * inv_height;
v[ 4] = rectangles[i].x1;
v[ 5] = rectangles[i].y2;
v[ 6] = v[ 2];
v[ 7] = (GLfloat) (rectangles[i].y2 - es->y) * inv_height;
v[ 8] = rectangles[i].x2;
v[ 9] = rectangles[i].y1;
v[10] = (GLfloat) (rectangles[i].x2 - es->x) * inv_width;
v[11] = v[ 3];
v[12] = rectangles[i].x2;
v[13] = rectangles[i].y2;
v[14] = v[10];
v[15] = v[ 7];
p[0] = i * 4 + 0;
p[1] = i * 4 + 1;
p[2] = i * 4 + 2;
p[3] = i * 4 + 2;
p[4] = i * 4 + 1;
p[5] = i * 4 + 3;
}
return n;
}
static void
transform_vertex(struct wlsc_surface *surface,
GLfloat x, GLfloat y, GLfloat u, GLfloat v, GLfloat *r)
{
struct wlsc_vector t;
t.f[0] = x;
t.f[1] = y;
t.f[2] = 0.0;
t.f[3] = 1.0;
wlsc_matrix_transform(&surface->transform->matrix, &t);
r[ 0] = t.f[0];
r[ 1] = t.f[1];
r[ 2] = u;
r[ 3] = v;
}
static int
texture_transformed_surface(struct wlsc_surface *es)
{
struct wlsc_compositor *ec = es->compositor;
GLfloat *v;
unsigned int *p;
v = wl_array_add(&ec->vertices, 16 * sizeof *v);
p = wl_array_add(&ec->indices, 6 * sizeof *p);
transform_vertex(es, es->x, es->y, 0.0, 0.0, &v[0]);
transform_vertex(es, es->x, es->y + es->height, 0.0, 1.0, &v[4]);
transform_vertex(es, es->x + es->width, es->y, 1.0, 0.0, &v[8]);
transform_vertex(es, es->x + es->width, es->y + es->height,
1.0, 1.0, &v[12]);
p[0] = 0;
p[1] = 1;
p[2] = 2;
p[3] = 2;
p[4] = 1;
p[5] = 3;
return 1;
}
static void
wlsc_surface_draw(struct wlsc_surface *es,
struct wlsc_output *output, pixman_region32_t *clip)
{
struct wlsc_compositor *ec = es->compositor;
GLfloat *v;
pixman_region32_t repaint;
GLint filter;
int n;
pixman_region32_init_rect(&repaint,
es->x, es->y, es->width, es->height);
pixman_region32_intersect(&repaint, &repaint, clip);
if (!pixman_region32_not_empty(&repaint))
return;
switch (es->visual) {
case WLSC_ARGB_VISUAL:
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
break;
case WLSC_PREMUL_ARGB_VISUAL:
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
glEnable(GL_BLEND);
break;
case WLSC_RGB_VISUAL:
glDisable(GL_BLEND);
break;
default:
fprintf(stderr, "bogus visual\n");
break;
}
if (es->alpha != ec->current_alpha) {
glUniform1f(ec->texture_shader.alpha_uniform,
es->alpha / 255.0);
ec->current_alpha = es->alpha;
}
if (es->transform == NULL) {
filter = GL_NEAREST;
n = texture_region(es, &repaint);
} else {
filter = GL_LINEAR;
n = texture_transformed_surface(es);
}
glBindTexture(GL_TEXTURE_2D, es->texture);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, filter);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, filter);
v = ec->vertices.data;
glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[0]);
glVertexAttribPointer(1, 2, GL_FLOAT, GL_FALSE, 4 * sizeof *v, &v[2]);
glEnableVertexAttribArray(0);
glEnableVertexAttribArray(1);
glDrawElements(GL_TRIANGLES, n * 6, GL_UNSIGNED_INT, ec->indices.data);
ec->vertices.size = 0;
ec->indices.size = 0;
pixman_region32_fini(&repaint);
}
static void
wlsc_surface_raise(struct wlsc_surface *surface)
{
struct wlsc_compositor *compositor = surface->compositor;
wl_list_remove(&surface->link);
wl_list_insert(&compositor->surface_list, &surface->link);
wlsc_compositor_repick(compositor);
wlsc_surface_damage(surface);
}
WL_EXPORT void
wlsc_compositor_damage_all(struct wlsc_compositor *compositor)
{
struct wlsc_output *output;
wl_list_for_each(output, &compositor->output_list, link)
wlsc_output_damage(output);
}
static inline void
wlsc_buffer_post_release(struct wl_buffer *buffer)
{
if (--buffer->busy_count > 0)
return;
assert(buffer->resource.client != NULL);
wl_resource_queue_event(&buffer->resource, WL_BUFFER_RELEASE);
}
WL_EXPORT void
wlsc_output_damage(struct wlsc_output *output)
{
struct wlsc_compositor *compositor = output->compositor;
struct wlsc_surface *es;
if (wl_list_empty(&compositor->surface_list))
return;
es = container_of(compositor->surface_list.next,
struct wlsc_surface, link);
pixman_region32_union(&es->damage, &es->damage, &output->region);
wlsc_compositor_schedule_repaint(compositor);
}
static void
fade_frame(struct wlsc_animation *animation,
struct wlsc_output *output, uint32_t msecs)
{
struct wlsc_compositor *compositor =
container_of(animation,
struct wlsc_compositor, fade.animation);
wlsc_spring_update(&compositor->fade.spring, msecs);
if (wlsc_spring_done(&compositor->fade.spring)) {
compositor->fade.spring.current =
compositor->fade.spring.target;
wl_list_remove(&animation->link);
wl_list_init(&animation->link);
if (compositor->fade.spring.current > 0.999) {
compositor->state = WLSC_COMPOSITOR_SLEEPING;
compositor->shell->lock(compositor->shell);
}
}
wlsc_output_damage(output);
}
static void
fade_output(struct wlsc_output *output,
GLfloat tint, pixman_region32_t *region)
{
struct wlsc_compositor *compositor = output->compositor;
struct wlsc_surface surface;
GLfloat color[4] = { 0.0, 0.0, 0.0, tint };
surface.compositor = compositor;
surface.x = output->x;
surface.y = output->y;
surface.pitch = output->current->width;
surface.width = output->current->width;
surface.height = output->current->height;
surface.texture = GL_NONE;
surface.transform = NULL;
surface.alpha = compositor->current_alpha;
if (tint <= 1.0)
surface.visual = WLSC_PREMUL_ARGB_VISUAL;
else
surface.visual = WLSC_RGB_VISUAL;
glUseProgram(compositor->solid_shader.program);
glUniformMatrix4fv(compositor->solid_shader.proj_uniform,
1, GL_FALSE, output->matrix.d);
glUniform4fv(compositor->solid_shader.color_uniform, 1, color);
wlsc_surface_draw(&surface, output, region);
}
static void
wlsc_output_set_cursor(struct wlsc_output *output,
struct wl_input_device *dev, int force_sw)
{
struct wlsc_compositor *ec = output->compositor;
struct wlsc_input_device *device = (struct wlsc_input_device *) dev;
pixman_region32_t cursor_region;
int use_hardware_cursor = 1, prior_was_hardware;
if (device->sprite == NULL)
return;
pixman_region32_init_rect(&cursor_region,
device->sprite->x, device->sprite->y,
device->sprite->width,
device->sprite->height);
pixman_region32_intersect(&cursor_region, &cursor_region, &output->region);
if (!pixman_region32_not_empty(&cursor_region)) {
output->set_hardware_cursor(output, NULL);
goto out;
}
prior_was_hardware = wl_list_empty(&device->sprite->link);
if (force_sw || output->set_hardware_cursor(output, device) < 0) {
if (prior_was_hardware) {
wlsc_surface_damage(device->sprite);
output->set_hardware_cursor(output, NULL);
}
use_hardware_cursor = 0;
} else if (!prior_was_hardware) {
wlsc_surface_damage_below(device->sprite);
}
/* Remove always to be on top. */
wl_list_remove(&device->sprite->link);
if (!use_hardware_cursor && ec->focus) {
wl_list_insert(&ec->surface_list, &device->sprite->link);
device->sprite->output = output;
} else {
wl_list_init(&device->sprite->link);
device->sprite->output = NULL;
}
out:
pixman_region32_fini(&cursor_region);
}
static int
setup_scanout_surface(struct wlsc_output *output, struct wlsc_surface *es)
{
if (es->visual != WLSC_RGB_VISUAL ||
output->prepare_scanout_surface(output, es) != 0)
return -1;
/* assert output->pending_scanout_buffer == NULL */
output->pending_scanout_buffer = es->buffer;
output->pending_scanout_buffer->busy_count++;
wl_list_insert(output->pending_scanout_buffer->resource.destroy_listener_list.prev,
&output->pending_scanout_buffer_destroy_listener.link);
return 0;
}
static void
wlsc_output_repaint(struct wlsc_output *output)
{
struct wlsc_compositor *ec = output->compositor;
struct wlsc_surface *es;
pixman_region32_t opaque, new_damage, total_damage, repaint;
output->prepare_render(output);
glViewport(0, 0, output->current->width, output->current->height);
glUseProgram(ec->texture_shader.program);
glUniformMatrix4fv(ec->texture_shader.proj_uniform,
1, GL_FALSE, output->matrix.d);
glUniform1i(ec->texture_shader.tex_uniform, 0);
wlsc_output_set_cursor(output, ec->input_device,
ec->fade.spring.current >= 0.001);
pixman_region32_init(&new_damage);
pixman_region32_init(&opaque);
wl_list_for_each(es, &ec->surface_list, link) {
pixman_region32_subtract(&es->damage, &es->damage, &opaque);
pixman_region32_union(&new_damage, &new_damage, &es->damage);
pixman_region32_union(&opaque, &opaque, &es->opaque);
}
pixman_region32_init(&total_damage);
pixman_region32_union(&total_damage, &new_damage,
&output->previous_damage);
pixman_region32_intersect(&output->previous_damage,
&new_damage, &output->region);
pixman_region32_fini(&opaque);
pixman_region32_fini(&new_damage);
es = container_of(ec->surface_list.next, struct wlsc_surface, link);
if (setup_scanout_surface(output, es) == 0)
/* We're drawing nothing, just let the damage accumulate */
return;
if (es->fullscreen_output == output) {
if (es->width < output->current->width ||
es->height < output->current->height)
glClear(GL_COLOR_BUFFER_BIT);
wlsc_surface_draw(es, output, &total_damage);
} else {
wl_list_for_each(es, &ec->surface_list, link) {
pixman_region32_copy(&es->damage, &total_damage);
pixman_region32_subtract(&total_damage, &total_damage, &es->opaque);
}
wl_list_for_each_reverse(es, &ec->surface_list, link) {
pixman_region32_init(&repaint);
pixman_region32_intersect(&repaint, &output->region,
&es->damage);
wlsc_surface_draw(es, output, &repaint);
pixman_region32_subtract(&es->damage,
&es->damage, &output->region);
}
}
if (ec->fade.spring.current > 0.001)
fade_output(output, ec->fade.spring.current, &total_damage);
}
struct wlsc_frame_callback {
struct wl_resource resource;
struct wl_list link;
};
static void
repaint(void *data, int msecs)
{
struct wlsc_output *output = data;
struct wlsc_compositor *compositor = output->compositor;
struct wlsc_animation *animation, *next;
struct wlsc_frame_callback *cb, *cnext;
wlsc_output_repaint(output);
output->repaint_needed = 0;
output->repaint_scheduled = 1;
output->present(output);
wl_list_for_each_safe(cb, cnext, &output->frame_callback_list, link) {
wl_resource_post_event(&cb->resource, WL_CALLBACK_DONE, msecs);
wl_resource_destroy(&cb->resource, 0);
}
wl_list_for_each_safe(animation, next,
&compositor->animation_list, link)
animation->frame(animation, output, msecs);
}
static void
idle_repaint(void *data)
{
repaint(data, wlsc_compositor_get_time());
}
WL_EXPORT void
wlsc_output_finish_frame(struct wlsc_output *output, int msecs)
{
if (output->scanout_buffer) {
wlsc_buffer_post_release(output->scanout_buffer);
wl_list_remove(&output->scanout_buffer_destroy_listener.link);
output->scanout_buffer = NULL;
}
if (output->pending_scanout_buffer) {
output->scanout_buffer = output->pending_scanout_buffer;
wl_list_remove(&output->pending_scanout_buffer_destroy_listener.link);
wl_list_insert(output->scanout_buffer->resource.destroy_listener_list.prev,
&output->scanout_buffer_destroy_listener.link);
output->pending_scanout_buffer = NULL;
}
if (output->repaint_needed)
repaint(output, msecs);
else
output->repaint_scheduled = 0;
}
WL_EXPORT void
wlsc_compositor_schedule_repaint(struct wlsc_compositor *compositor)
{
struct wlsc_output *output;
struct wl_event_loop *loop;
if (compositor->state == WLSC_COMPOSITOR_SLEEPING)
return;
loop = wl_display_get_event_loop(compositor->wl_display);
wl_list_for_each(output, &compositor->output_list, link) {
output->repaint_needed = 1;
if (output->repaint_scheduled)
continue;
wl_event_loop_add_idle(loop, idle_repaint, output);
output->repaint_scheduled = 1;
}
}
WL_EXPORT void
wlsc_compositor_fade(struct wlsc_compositor *compositor, float tint)
{
int done;
done = wlsc_spring_done(&compositor->fade.spring);
compositor->fade.spring.target = tint;
if (wlsc_spring_done(&compositor->fade.spring))
return;
if (done)
compositor->fade.spring.timestamp =
wlsc_compositor_get_time();
wlsc_compositor_damage_all(compositor);
if (wl_list_empty(&compositor->fade.animation.link))
wl_list_insert(compositor->animation_list.prev,
&compositor->fade.animation.link);
}
static void
surface_destroy(struct wl_client *client, struct wl_resource *resource)
{
wl_resource_destroy(resource, wlsc_compositor_get_time());
}
WL_EXPORT void
wlsc_surface_assign_output(struct wlsc_surface *es)
{
struct wlsc_compositor *ec = es->compositor;
struct wlsc_output *output, *new_output;
pixman_region32_t region;
uint32_t max, area;
pixman_box32_t *e;
new_output = NULL;
max = 0;
wl_list_for_each(output, &ec->output_list, link) {
pixman_region32_init_rect(&region,
es->x, es->y, es->width, es->height);
pixman_region32_intersect(&region, &region, &output->region);
e = pixman_region32_extents(&region);
area = (e->x2 - e->x1) * (e->y2 - e->y1);
if (area >= max) {
new_output = output;
max = area;
}
}
es->output = new_output;
if (!wl_list_empty(&es->frame_callback_list)) {
wl_list_insert_list(new_output->frame_callback_list.prev,
&es->frame_callback_list);
wl_list_init(&es->frame_callback_list);
}
}
static void
surface_attach(struct wl_client *client,
struct wl_resource *resource,
struct wl_resource *buffer_resource, int32_t x, int32_t y)
{
struct wlsc_surface *es = resource->data;
struct wlsc_shell *shell = es->compositor->shell;
struct wl_buffer *buffer = buffer_resource->data;
if (es->buffer) {
wlsc_buffer_post_release(es->buffer);
wl_list_remove(&es->buffer_destroy_listener.link);
}
buffer->busy_count++;
es->buffer = buffer;
wl_list_insert(es->buffer->resource.destroy_listener_list.prev,
&es->buffer_destroy_listener.link);
if (es->visual == WLSC_NONE_VISUAL) {
shell->map(shell, es, buffer->width, buffer->height);
} else if (x != 0 || y != 0 ||
es->width != buffer->width ||
es->height != buffer->height) {
shell->configure(shell, es, es->x + x, es->y + y,
buffer->width, buffer->height);
}
wlsc_buffer_attach(buffer, &es->surface);
}
static void
surface_damage(struct wl_client *client,
struct wl_resource *resource,
int32_t x, int32_t y, int32_t width, int32_t height)
{
struct wlsc_surface *es = resource->data;
wlsc_surface_damage_rectangle(es, x, y, width, height);
}
static void
destroy_frame_callback(struct wl_resource *resource)
{
struct wlsc_frame_callback *cb = resource->data;
wl_list_remove(&cb->link);
free(cb);
}
static void
surface_frame(struct wl_client *client,
struct wl_resource *resource, uint32_t callback)
{
struct wlsc_frame_callback *cb;
struct wlsc_surface *es = resource->data;
cb = malloc(sizeof *cb);
if (cb == NULL) {
wl_resource_post_no_memory(resource);
return;
}
cb->resource.object.interface = &wl_callback_interface;
cb->resource.object.id = callback;
cb->resource.destroy = destroy_frame_callback;
cb->resource.client = client;
cb->resource.data = cb;
wl_client_add_resource(client, &cb->resource);
if (es->output) {
wl_list_insert(es->output->frame_callback_list.prev,
&cb->link);
} else {
wl_list_insert(es->frame_callback_list.prev, &cb->link);
}
}
const static struct wl_surface_interface surface_interface = {
surface_destroy,
surface_attach,
surface_damage,
surface_frame
};
static void
compositor_create_surface(struct wl_client *client,
struct wl_resource *resource, uint32_t id)
{
struct wlsc_compositor *ec = resource->data;
struct wlsc_surface *surface;
surface = wlsc_surface_create(ec, 0, 0, 0, 0);
if (surface == NULL) {
wl_resource_post_no_memory(resource);
return;
}
surface->surface.resource.destroy = destroy_surface;
surface->surface.resource.object.id = id;
surface->surface.resource.object.interface = &wl_surface_interface;
surface->surface.resource.object.implementation =
(void (**)(void)) &surface_interface;
surface->surface.resource.data = surface;
wl_client_add_resource(client, &surface->surface.resource);
}
const static struct wl_compositor_interface compositor_interface = {
compositor_create_surface,
};
static void
wlsc_surface_transform(struct wlsc_surface *surface,
int32_t x, int32_t y, int32_t *sx, int32_t *sy)
{
*sx = x - surface->x;
*sy = y - surface->y;
}
WL_EXPORT struct wlsc_surface *
pick_surface(struct wl_input_device *device, int32_t *sx, int32_t *sy)
{
struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
struct wlsc_compositor *ec = wd->compositor;
struct wlsc_surface *es;
wl_list_for_each(es, &ec->surface_list, link) {
if (es->surface.resource.client == NULL)
continue;
wlsc_surface_transform(es, device->x, device->y, sx, sy);
if (0 <= *sx && *sx < es->width &&
0 <= *sy && *sy < es->height)
return es;
}
return NULL;
}
static void
implicit_grab_motion(struct wl_grab *grab,
uint32_t time, int32_t x, int32_t y)
{
struct wlsc_input_device *device =
(struct wlsc_input_device *) grab->input_device;
struct wlsc_surface *es =
(struct wlsc_surface *) device->input_device.pointer_focus;
int32_t sx, sy;
struct wl_resource *resource;
resource = grab->input_device->pointer_focus_resource;
if (resource) {
wlsc_surface_transform(es, x, y, &sx, &sy);
wl_resource_post_event(resource, WL_INPUT_DEVICE_MOTION,
time, x, y, sx, sy);
}
}
static void
implicit_grab_button(struct wl_grab *grab,
uint32_t time, int32_t button, int32_t state)
{
struct wl_resource *resource;
resource = grab->input_device->pointer_focus_resource;
if (resource)
wl_resource_post_event(resource, WL_INPUT_DEVICE_BUTTON,
time, button, state);
}
static void
implicit_grab_end(struct wl_grab *grab, uint32_t time)
{
}
static const struct wl_grab_interface implicit_grab_interface = {
implicit_grab_motion,
implicit_grab_button,
implicit_grab_end
};
WL_EXPORT void
wlsc_compositor_wake(struct wlsc_compositor *compositor)
{
compositor->state = WLSC_COMPOSITOR_ACTIVE;
wlsc_compositor_fade(compositor, 0.0);
wl_event_source_timer_update(compositor->idle_source,
compositor->idle_time * 1000);
}
WL_EXPORT void
wlsc_compositor_activity(struct wlsc_compositor *compositor)
{
if (compositor->state == WLSC_COMPOSITOR_ACTIVE) {
wlsc_compositor_wake(compositor);
} else {
compositor->shell->unlock(compositor->shell);
}
}
static void
wlsc_compositor_idle_inhibit(struct wlsc_compositor *compositor)
{
wlsc_compositor_activity(compositor);
compositor->idle_inhibit++;
}
static void
wlsc_compositor_idle_release(struct wlsc_compositor *compositor)
{
compositor->idle_inhibit--;
wlsc_compositor_activity(compositor);
}
static int
idle_handler(void *data)
{
struct wlsc_compositor *compositor = data;
if (compositor->idle_inhibit)
return 1;
wlsc_compositor_fade(compositor, 1.0);
return 1;
}
WL_EXPORT void
notify_motion(struct wl_input_device *device, uint32_t time, int x, int y)
{
struct wlsc_surface *es;
struct wlsc_output *output;
const struct wl_grab_interface *interface;
struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
struct wlsc_compositor *ec = wd->compositor;
int32_t sx, sy;
int x_valid = 0, y_valid = 0;
int min_x = INT_MAX, min_y = INT_MAX, max_x = INT_MIN, max_y = INT_MIN;
wlsc_compositor_activity(ec);
wl_list_for_each(output, &ec->output_list, link) {
if (output->x <= x && x <= output->x + output->current->width)
x_valid = 1;
if (output->y <= y && y <= output->y + output->current->height)
y_valid = 1;
/* FIXME: calculate this only on output addition/deletion */
if (output->x < min_x)
min_x = output->x;
if (output->y < min_y)
min_y = output->y;
if (output->x + output->current->width > max_x)
max_x = output->x + output->current->width;
if (output->y + output->current->height > max_y)
max_y = output->y + output->current->height;
}
if (!x_valid) {
if (x < min_x)
x = min_x;
else if (x >= max_x)
x = max_x;
}
if (!y_valid) {
if (y < min_y)
y = min_y;
else if (y >= max_y)
y = max_y;
}
device->x = x;
device->y = y;
if (device->grab) {
interface = device->grab->interface;
interface->motion(device->grab, time, x, y);
} else {
es = pick_surface(device, &sx, &sy);
wl_input_device_set_pointer_focus(device,
&es->surface,
time, x, y, sx, sy);
if (device->pointer_focus_resource)
wl_resource_post_event(device->pointer_focus_resource,
WL_INPUT_DEVICE_MOTION,
time, x, y, sx, sy);
}
if (wd->sprite) {
wlsc_surface_damage_below(wd->sprite);
wd->sprite->x = device->x - wd->hotspot_x;
wd->sprite->y = device->y - wd->hotspot_y;
wlsc_surface_damage(wd->sprite);
}
}
WL_EXPORT void
wlsc_surface_activate(struct wlsc_surface *surface,
struct wlsc_input_device *device, uint32_t time)
{
wlsc_surface_raise(surface);
wl_input_device_set_keyboard_focus(&device->input_device,
&surface->surface, time);
wlsc_data_device_set_keyboard_focus(device);
}
WL_EXPORT void
notify_button(struct wl_input_device *device,
uint32_t time, int32_t button, int32_t state)
{
struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
struct wlsc_compositor *compositor = wd->compositor;
struct wlsc_surface *surface =
(struct wlsc_surface *) device->pointer_focus;
int32_t sx, sy;
if (state)
wlsc_compositor_idle_inhibit(compositor);
else
wlsc_compositor_idle_release(compositor);
wlsc_compositor_run_binding(compositor, wd, time, 0, button, state);
if (state && surface && device->grab == NULL) {
wl_input_device_start_grab(device,
&device->implicit_grab,
button, time);
}
if (device->grab)
device->grab->interface->button(device->grab, time,
button, state);
if (!state && device->grab && device->grab_button == button) {
wl_input_device_end_grab(device, time);
surface = pick_surface(device, &sx, &sy);
wl_input_device_set_pointer_focus(device, &surface->surface,
time, device->x, device->y,
sx, sy);
}
}
static void
update_modifier_state(struct wlsc_input_device *device,
uint32_t key, uint32_t state)
{
uint32_t modifier;
switch (key) {
case KEY_LEFTCTRL:
case KEY_RIGHTCTRL:
modifier = MODIFIER_CTRL;
break;
case KEY_LEFTALT:
case KEY_RIGHTALT:
modifier = MODIFIER_ALT;
break;
case KEY_LEFTMETA:
case KEY_RIGHTMETA:
modifier = MODIFIER_SUPER;
break;
default:
modifier = 0;
break;
}
if (state)
device->modifier_state |= modifier;
else
device->modifier_state &= ~modifier;
}
WL_EXPORT void
notify_key(struct wl_input_device *device,
uint32_t time, uint32_t key, uint32_t state)
{
struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
struct wlsc_compositor *compositor = wd->compositor;
uint32_t *k, *end;
if (state)
wlsc_compositor_idle_inhibit(compositor);
else
wlsc_compositor_idle_release(compositor);
wlsc_compositor_run_binding(compositor, wd, time, key, 0, state);
update_modifier_state(wd, key, state);
end = device->keys.data + device->keys.size;
for (k = device->keys.data; k < end; k++) {
if (*k == key)
*k = *--end;
}
device->keys.size = (void *) end - device->keys.data;
if (state) {
k = wl_array_add(&device->keys, sizeof *k);
*k = key;
}
if (device->keyboard_focus_resource)
wl_resource_post_event(device->keyboard_focus_resource,
WL_INPUT_DEVICE_KEY, time, key, state);
}
WL_EXPORT void
notify_pointer_focus(struct wl_input_device *device,
uint32_t time, struct wlsc_output *output,
int32_t x, int32_t y)
{
struct wlsc_input_device *wd = (struct wlsc_input_device *) device;
struct wlsc_compositor *compositor = wd->compositor;
struct wlsc_surface *es;
int32_t sx, sy;
if (output) {
device->x = x;
device->y = y;
es = pick_surface(device, &sx, &sy);
wl_input_device_set_pointer_focus(device,
&es->surface,
time, x, y, sx, sy);
compositor->focus = 1;
} else {
wl_input_device_set_pointer_focus(device, NULL,
time, 0, 0, 0, 0);
compositor->focus = 0;
}
}
WL_EXPORT void
notify_keyboard_focus(struct wl_input_device *device,
uint32_t time, struct wlsc_output *output,
struct wl_array *keys)
{
struct wlsc_input_device *wd =
(struct wlsc_input_device *) device;
struct wlsc_compositor *compositor = wd->compositor;
struct wlsc_surface *es;
uint32_t *k, *end;
if (!wl_list_empty(&compositor->surface_list))
es = container_of(compositor->surface_list.next,
struct wlsc_surface, link);
else
es = NULL;
if (output) {
wl_array_copy(&wd->input_device.keys, keys);
wd->modifier_state = 0;
end = device->keys.data + device->keys.size;
for (k = device->keys.data; k < end; k++) {
wlsc_compositor_idle_inhibit(compositor);
update_modifier_state(wd, *k, 1);
}
if (es && es->surface.resource.client)
wl_input_device_set_keyboard_focus(&wd->input_device,
&es->surface, time);
} else {
end = device->keys.data + device->keys.size;
for (k = device->keys.data; k < end; k++)
wlsc_compositor_idle_release(compositor);
wd->modifier_state = 0;
wl_input_device_set_keyboard_focus(&wd->input_device,
NULL, time);
}
}
static void
input_device_attach(struct wl_client *client,
struct wl_resource *resource,
uint32_t time,
struct wl_resource *buffer_resource, int32_t x, int32_t y)
{
struct wlsc_input_device *device = resource->data;
struct wlsc_compositor *compositor = device->compositor;
struct wl_buffer *buffer;
if (time < device->input_device.pointer_focus_time)
return;
if (device->input_device.pointer_focus == NULL)
return;
if (device->input_device.pointer_focus->resource.client != client)
return;
if (device->sprite)
wlsc_surface_damage_below(device->sprite);
if (!buffer_resource) {
destroy_surface(&device->sprite->surface.resource);
device->sprite = NULL;
return;
}
if (!device->sprite) {
device->sprite =
wlsc_surface_create(compositor,
device->input_device.x,
device->input_device.y, 32, 32);
wl_list_init(&device->sprite->link);
}
buffer = buffer_resource->data;
wlsc_buffer_attach(buffer, &device->sprite->surface);
device->hotspot_x = x;
device->hotspot_y = y;
device->sprite->width = buffer->width;
device->sprite->height = buffer->height;
device->sprite->x = device->input_device.x - device->hotspot_x;
device->sprite->y = device->input_device.y - device->hotspot_y;
wlsc_surface_damage(device->sprite);
}
const static struct wl_input_device_interface input_device_interface = {
input_device_attach,
};
static void unbind_input_device(struct wl_resource *resource)
{
wl_list_remove(&resource->link);
free(resource);
}
static void
bind_input_device(struct wl_client *client,
void *data, uint32_t version, uint32_t id)
{
struct wl_input_device *device = data;
struct wl_resource *resource;
resource = wl_client_add_object(client, &wl_input_device_interface,
&input_device_interface, id, data);
wl_list_insert(&device->resource_list, &resource->link);
resource->destroy = unbind_input_device;
}
WL_EXPORT void
wlsc_input_device_init(struct wlsc_input_device *device,
struct wlsc_compositor *ec)
{
wl_input_device_init(&device->input_device);
wl_list_init(&device->drag_resource_list);
wl_display_add_global(ec->wl_display, &wl_input_device_interface,
device, bind_input_device);
device->sprite = NULL;
device->compositor = ec;
device->hotspot_x = 16;
device->hotspot_y = 16;
device->modifier_state = 0;
device->input_device.implicit_grab.interface = &implicit_grab_interface;
wl_list_insert(ec->input_device_list.prev, &device->link);
device->selection_data_source = NULL;
}
static void
bind_output(struct wl_client *client,
void *data, uint32_t version, uint32_t id)
{
struct wlsc_output *output = data;
struct wlsc_mode *mode;
struct wl_resource *resource;
resource = wl_client_add_object(client,
&wl_output_interface, NULL, id, data);
wl_resource_post_event(resource,
WL_OUTPUT_GEOMETRY,
output->x,
output->y,
output->mm_width,
output->mm_height,
output->subpixel,
output->make, output->model);
wl_list_for_each (mode, &output->mode_list, link) {
wl_resource_post_event(resource,
WL_OUTPUT_MODE,
mode->flags,
mode->width,
mode->height,
mode->refresh);
}
}
static const char vertex_shader[] =
"uniform mat4 proj;\n"
"attribute vec2 position;\n"
"attribute vec2 texcoord;\n"
"varying vec2 v_texcoord;\n"
"void main()\n"
"{\n"
" gl_Position = proj * vec4(position, 0.0, 1.0);\n"
" v_texcoord = texcoord;\n"
"}\n";
static const char texture_fragment_shader[] =
"precision mediump float;\n"
"varying vec2 v_texcoord;\n"
"uniform sampler2D tex;\n"
"uniform float alpha;\n"
"void main()\n"
"{\n"
" gl_FragColor = texture2D(tex, v_texcoord)\n;"
" gl_FragColor = alpha * gl_FragColor;\n"
"}\n";
static const char solid_fragment_shader[] =
"precision mediump float;\n"
"uniform vec4 color;\n"
"void main()\n"
"{\n"
" gl_FragColor = color\n;"
"}\n";
static int
compile_shader(GLenum type, const char *source)
{
GLuint s;
char msg[512];
GLint status;
s = glCreateShader(type);
glShaderSource(s, 1, &source, NULL);
glCompileShader(s);
glGetShaderiv(s, GL_COMPILE_STATUS, &status);
if (!status) {
glGetShaderInfoLog(s, sizeof msg, NULL, msg);
fprintf(stderr, "shader info: %s\n", msg);
return GL_NONE;
}
return s;
}
static int
wlsc_shader_init(struct wlsc_shader *shader,
const char *vertex_source, const char *fragment_source)
{
char msg[512];
GLint status;
shader->vertex_shader =
compile_shader(GL_VERTEX_SHADER, vertex_source);
shader->fragment_shader =
compile_shader(GL_FRAGMENT_SHADER, fragment_source);
shader->program = glCreateProgram();
glAttachShader(shader->program, shader->vertex_shader);
glAttachShader(shader->program, shader->fragment_shader);
glBindAttribLocation(shader->program, 0, "position");
glBindAttribLocation(shader->program, 1, "texcoord");
glLinkProgram(shader->program);
glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
if (!status) {
glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
fprintf(stderr, "link info: %s\n", msg);
return -1;
}
shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
shader->tex_uniform = glGetUniformLocation(shader->program, "tex");
shader->alpha_uniform = glGetUniformLocation(shader->program, "alpha");
return 0;
}
static int
init_solid_shader(struct wlsc_shader *shader,
GLuint vertex_shader, const char *fragment_source)
{
GLint status;
char msg[512];
shader->vertex_shader = vertex_shader;
shader->fragment_shader =
compile_shader(GL_FRAGMENT_SHADER, fragment_source);
shader->program = glCreateProgram();
glAttachShader(shader->program, shader->vertex_shader);
glAttachShader(shader->program, shader->fragment_shader);
glBindAttribLocation(shader->program, 0, "position");
glBindAttribLocation(shader->program, 1, "texcoord");
glLinkProgram(shader->program);
glGetProgramiv(shader->program, GL_LINK_STATUS, &status);
if (!status) {
glGetProgramInfoLog(shader->program, sizeof msg, NULL, msg);
fprintf(stderr, "link info: %s\n", msg);
return -1;
}
shader->proj_uniform = glGetUniformLocation(shader->program, "proj");
shader->color_uniform = glGetUniformLocation(shader->program, "color");
return 0;
}
WL_EXPORT void
wlsc_output_destroy(struct wlsc_output *output)
{
pixman_region32_fini(&output->region);
pixman_region32_fini(&output->previous_damage);
}
WL_EXPORT void
wlsc_output_move(struct wlsc_output *output, int x, int y)
{
int flip;
output->x = x;
output->y = y;
pixman_region32_init(&output->previous_damage);
pixman_region32_init_rect(&output->region, x, y,
output->current->width,
output->current->height);
wlsc_matrix_init(&output->matrix);
wlsc_matrix_translate(&output->matrix,
-output->x - output->current->width / 2.0,
-output->y - output->current->height / 2.0, 0);
flip = (output->flags & WL_OUTPUT_FLIPPED) ? -1 : 1;
wlsc_matrix_scale(&output->matrix,
2.0 / output->current->width,
flip * 2.0 / output->current->height, 1);
wlsc_output_damage(output);
}
WL_EXPORT void
wlsc_output_init(struct wlsc_output *output, struct wlsc_compositor *c,
int x, int y, int width, int height, uint32_t flags)
{
output->compositor = c;
output->x = x;
output->y = y;
output->mm_width = width;
output->mm_height = height;
output->flags = flags;
wlsc_output_move(output, x, y);
output->scanout_buffer_destroy_listener.func =
output_handle_scanout_buffer_destroy;
output->pending_scanout_buffer_destroy_listener.func =
output_handle_pending_scanout_buffer_destroy;
wl_list_init(&output->frame_callback_list);
wl_display_add_global(c->wl_display,
&wl_output_interface, output, bind_output);
}
static void
shm_buffer_created(struct wl_buffer *buffer)
{
struct wl_list *surfaces_attached_to;
surfaces_attached_to = malloc(sizeof *surfaces_attached_to);
if (!surfaces_attached_to) {
buffer->user_data = NULL;
return;
}
wl_list_init(surfaces_attached_to);
buffer->user_data = surfaces_attached_to;
}
static void
shm_buffer_damaged(struct wl_buffer *buffer,
int32_t x, int32_t y, int32_t width, int32_t height)
{
struct wl_list *surfaces_attached_to = buffer->user_data;
struct wlsc_surface *es;
GLsizei tex_width = wl_shm_buffer_get_stride(buffer) / 4;
wl_list_for_each(es, surfaces_attached_to, buffer_link) {
glBindTexture(GL_TEXTURE_2D, es->texture);
glTexImage2D(GL_TEXTURE_2D, 0, GL_BGRA_EXT,
tex_width, buffer->height, 0,
GL_BGRA_EXT, GL_UNSIGNED_BYTE,
wl_shm_buffer_get_data(buffer));
/* Hmm, should use glTexSubImage2D() here but GLES2 doesn't
* support any unpack attributes except GL_UNPACK_ALIGNMENT. */
}
}
static void
shm_buffer_destroyed(struct wl_buffer *buffer)
{
struct wl_list *surfaces_attached_to = buffer->user_data;
struct wlsc_surface *es, *next;
wl_list_for_each_safe(es, next, surfaces_attached_to, buffer_link) {
wl_list_remove(&es->buffer_link);
wl_list_init(&es->buffer_link);
}
free(surfaces_attached_to);
}
const static struct wl_shm_callbacks shm_callbacks = {
shm_buffer_created,
shm_buffer_damaged,
shm_buffer_destroyed
};
static void
compositor_bind(struct wl_client *client,
void *data, uint32_t version, uint32_t id)
{
struct wlsc_compositor *compositor = data;
wl_client_add_object(client, &wl_compositor_interface,
&compositor_interface, id, compositor);
}
WL_EXPORT int
wlsc_compositor_init(struct wlsc_compositor *ec, struct wl_display *display)
{
struct wl_event_loop *loop;
const char *extensions;
ec->wl_display = display;
if (!wl_display_add_global(display, &wl_compositor_interface,
ec, compositor_bind))
return -1;
ec->shm = wl_shm_init(display, &shm_callbacks);
ec->image_target_texture_2d =
(void *) eglGetProcAddress("glEGLImageTargetTexture2DOES");
ec->image_target_renderbuffer_storage = (void *)
eglGetProcAddress("glEGLImageTargetRenderbufferStorageOES");
ec->create_image = (void *) eglGetProcAddress("eglCreateImageKHR");
ec->destroy_image = (void *) eglGetProcAddress("eglDestroyImageKHR");
ec->bind_display =
(void *) eglGetProcAddress("eglBindWaylandDisplayWL");
ec->unbind_display =
(void *) eglGetProcAddress("eglUnbindWaylandDisplayWL");
extensions = (const char *) glGetString(GL_EXTENSIONS);
if (!strstr(extensions, "GL_EXT_texture_format_BGRA8888")) {
fprintf(stderr,
"GL_EXT_texture_format_BGRA8888 not available\n");
return -1;
}
extensions =
(const char *) eglQueryString(ec->display, EGL_EXTENSIONS);
if (strstr(extensions, "EGL_WL_bind_wayland_display"))
ec->has_bind_display = 1;
if (ec->has_bind_display)
ec->bind_display(ec->display, ec->wl_display);
wl_list_init(&ec->surface_list);
wl_list_init(&ec->input_device_list);
wl_list_init(&ec->output_list);
wl_list_init(&ec->binding_list);
wl_list_init(&ec->animation_list);
wlsc_spring_init(&ec->fade.spring, 30.0, 1.0, 1.0);
ec->fade.animation.frame = fade_frame;
wl_list_init(&ec->fade.animation.link);
screenshooter_create(ec);
wlsc_data_device_manager_init(ec);
glActiveTexture(GL_TEXTURE0);
if (wlsc_shader_init(&ec->texture_shader,
vertex_shader, texture_fragment_shader) < 0)
return -1;
if (init_solid_shader(&ec->solid_shader,
ec->texture_shader.vertex_shader,
solid_fragment_shader) < 0)
return -1;
loop = wl_display_get_event_loop(ec->wl_display);
ec->idle_source = wl_event_loop_add_timer(loop, idle_handler, ec);
wl_event_source_timer_update(ec->idle_source, ec->idle_time * 1000);
wlsc_compositor_schedule_repaint(ec);
return 0;
}
WL_EXPORT void
wlsc_compositor_shutdown(struct wlsc_compositor *ec)
{
struct wlsc_output *output, *next;
/* Destroy all outputs associated with this compositor */
wl_list_for_each_safe(output, next, &ec->output_list, link)
output->destroy(output);
}
static int on_term_signal(int signal_number, void *data)
{
struct wl_display *display = data;
fprintf(stderr, "caught signal %d\n", signal_number);
wl_display_terminate(display);
return 1;
}
static void *
load_module(const char *name, const char *entrypoint, void **handle)
{
char path[PATH_MAX];
void *module, *init;
if (name[0] != '/')
snprintf(path, sizeof path, MODULEDIR "/%s", name);
else
snprintf(path, sizeof path, "%s", name);
module = dlopen(path, RTLD_LAZY);
if (!module) {
fprintf(stderr,
"failed to load module: %s\n", dlerror());
return NULL;
}
init = dlsym(module, entrypoint);
if (!init) {
fprintf(stderr,
"failed to lookup init function: %s\n", dlerror());
return NULL;
}
return init;
}
int main(int argc, char *argv[])
{
struct wl_display *display;
struct wlsc_compositor *ec;
struct wl_event_loop *loop;
int o, xserver = 0;
void *shell_module, *backend_module;
int (*shell_init)(struct wlsc_compositor *ec);
struct wlsc_compositor
*(*backend_init)(struct wl_display *display, char *options);
char *backend = NULL;
char *backend_options = "";
char *shell = NULL;
char *p;
int option_idle_time = 300;
static const char opts[] = "B:b:o:S:i:s:x";
static const struct option longopts[ ] = {
{ "backend", 1, NULL, 'B' },
{ "backend-options", 1, NULL, 'o' },
{ "socket", 1, NULL, 'S' },
{ "idle-time", 1, NULL, 'i' },
{ "shell", 1, NULL, 's' },
{ "xserver", 0, NULL, 'x' },
{ NULL, }
};
while (o = getopt_long(argc, argv, opts, longopts, &o), o > 0) {
switch (o) {
case 'B':
backend = optarg;
break;
case 'o':
backend_options = optarg;
break;
case 'S':
option_socket_name = optarg;
break;
case 'i':
option_idle_time = strtol(optarg, &p, 0);
if (*p != '\0') {
fprintf(stderr,
"invalid idle time option: %s\n",
optarg);
exit(EXIT_FAILURE);
}
break;
case 's':
shell = optarg;
break;
case 'x':
xserver = 1;
break;
}
}
display = wl_display_create();
loop = wl_display_get_event_loop(display);
wl_event_loop_add_signal(loop, SIGTERM, on_term_signal, display);
wl_event_loop_add_signal(loop, SIGINT, on_term_signal, display);
wl_event_loop_add_signal(loop, SIGQUIT, on_term_signal, display);
wl_list_init(&child_process_list);
wl_event_loop_add_signal(loop, SIGCHLD, sigchld_handler, NULL);
if (!backend) {
if (getenv("WAYLAND_DISPLAY"))
backend = "wayland-backend.so";
else if (getenv("DISPLAY"))
backend = "x11-backend.so";
else if (getenv("OPENWFD"))
backend = "openwfd-backend.so";
else
backend = "drm-backend.so";
}
if (!shell)
shell = "desktop-shell.so";
backend_init = load_module(backend, "backend_init", &backend_module);
if (!backend_init)
exit(EXIT_FAILURE);
shell_init = load_module(shell, "shell_init", &shell_module);
if (!shell_init)
exit(EXIT_FAILURE);
ec = backend_init(display, backend_options);
if (ec == NULL) {
fprintf(stderr, "failed to create compositor\n");
exit(EXIT_FAILURE);
}
ec->option_idle_time = option_idle_time;
ec->idle_time = option_idle_time;
if (shell_init(ec) < 0)
exit(EXIT_FAILURE);
if (xserver)
wlsc_xserver_init(ec);
if (wl_display_add_socket(display, option_socket_name)) {
fprintf(stderr, "failed to add socket: %m\n");
exit(EXIT_FAILURE);
}
wl_display_run(display);
if (xserver)
wlsc_xserver_destroy(ec);
if (ec->has_bind_display)
ec->unbind_display(ec->display, display);
ec->destroy(ec);
wl_display_destroy(display);
return 0;
}