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weston/compositor/compositor-x11.c

667 lines
17 KiB

/*
* Copyright © 2008-2010 Kristian Høgsberg
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stddef.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include <errno.h>
#include <sys/time.h>
#include <linux/input.h>
#include <xcb/xcb.h>
#include <xcb/dri2.h>
#include <xcb/xfixes.h>
#define GL_GLEXT_PROTOTYPES
#define EGL_EGLEXT_PROTOTYPES
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#include <EGL/egl.h>
#include <EGL/eglext.h>
#include "compositor.h"
#define ARRAY_SIZE(array) (sizeof(array) / sizeof(array[0]))
struct x11_compositor {
struct wlsc_compositor base;
xcb_connection_t *conn;
xcb_screen_t *screen;
xcb_cursor_t null_cursor;
int dri2_major;
int dri2_minor;
struct wl_event_source *xcb_source;
struct {
xcb_atom_t wm_protocols;
xcb_atom_t wm_normal_hints;
xcb_atom_t wm_size_hints;
xcb_atom_t wm_delete_window;
xcb_atom_t net_wm_name;
xcb_atom_t utf8_string;
} atom;
};
struct x11_output {
struct wlsc_output base;
xcb_xfixes_region_t region;
xcb_window_t window;
GLuint rbo;
EGLImageKHR image;
xcb_rectangle_t damage[16];
int damage_count;
};
struct x11_input {
struct wlsc_input_device base;
};
static void
x11_input_create(struct x11_compositor *c)
{
struct x11_input *input;
input = malloc(sizeof *input);
if (input == NULL)
return;
memset(input, 0, sizeof *input);
wlsc_input_device_init(&input->base, &c->base);
c->base.input_device = &input->base;
}
static int
dri2_connect(struct x11_compositor *c)
{
xcb_xfixes_query_version_reply_t *xfixes_query;
xcb_xfixes_query_version_cookie_t xfixes_query_cookie;
xcb_dri2_query_version_reply_t *dri2_query;
xcb_dri2_query_version_cookie_t dri2_query_cookie;
xcb_dri2_connect_reply_t *connect;
xcb_dri2_connect_cookie_t connect_cookie;
xcb_generic_error_t *error;
char path[256];
int fd;
xcb_prefetch_extension_data (c->conn, &xcb_xfixes_id);
xcb_prefetch_extension_data (c->conn, &xcb_dri2_id);
xfixes_query_cookie =
xcb_xfixes_query_version(c->conn,
XCB_XFIXES_MAJOR_VERSION,
XCB_XFIXES_MINOR_VERSION);
dri2_query_cookie =
xcb_dri2_query_version (c->conn,
XCB_DRI2_MAJOR_VERSION,
XCB_DRI2_MINOR_VERSION);
connect_cookie = xcb_dri2_connect_unchecked (c->conn,
c->screen->root,
XCB_DRI2_DRIVER_TYPE_DRI);
xfixes_query =
xcb_xfixes_query_version_reply (c->conn,
xfixes_query_cookie, &error);
if (xfixes_query == NULL ||
error != NULL || xfixes_query->major_version < 2) {
free(error);
return -1;
}
free(xfixes_query);
dri2_query =
xcb_dri2_query_version_reply (c->conn,
dri2_query_cookie, &error);
if (dri2_query == NULL || error != NULL) {
fprintf(stderr, "DRI2: failed to query version");
free(error);
return EGL_FALSE;
}
c->dri2_major = dri2_query->major_version;
c->dri2_minor = dri2_query->minor_version;
free(dri2_query);
connect = xcb_dri2_connect_reply (c->conn,
connect_cookie, NULL);
if (connect == NULL ||
connect->driver_name_length + connect->device_name_length == 0) {
fprintf(stderr, "DRI2: failed to authenticate");
return -1;
}
snprintf(path, sizeof path, "%.*s",
xcb_dri2_connect_device_name_length (connect),
xcb_dri2_connect_device_name (connect));
free(connect);
fd = open(path, O_RDWR);
if (fd < 0) {
fprintf(stderr,
"DRI2: could not open %s (%s)", path, strerror(errno));
return -1;
}
return wlsc_drm_init(&c->base, fd, path);
}
static int
dri2_authenticate(struct x11_compositor *c, uint32_t magic)
{
xcb_dri2_authenticate_reply_t *authenticate;
xcb_dri2_authenticate_cookie_t authenticate_cookie;
authenticate_cookie =
xcb_dri2_authenticate_unchecked(c->conn,
c->screen->root, magic);
authenticate =
xcb_dri2_authenticate_reply(c->conn,
authenticate_cookie, NULL);
if (authenticate == NULL || !authenticate->authenticated) {
fprintf(stderr, "DRI2: failed to authenticate");
free(authenticate);
return -1;
}
free(authenticate);
return 0;
}
static int
x11_compositor_init_egl(struct x11_compositor *c)
{
EGLint major, minor;
const char *extensions;
drm_magic_t magic;
static const EGLint context_attribs[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
if (dri2_connect(c) < 0)
return -1;
if (drmGetMagic(c->base.drm.fd, &magic)) {
fprintf(stderr, "DRI2: failed to get drm magic");
return -1;
}
if (dri2_authenticate(c, magic) < 0)
return -1;
c->base.display = eglGetDRMDisplayMESA(c->base.drm.fd);
if (c->base.display == NULL) {
fprintf(stderr, "failed to create display\n");
return -1;
}
if (!eglInitialize(c->base.display, &major, &minor)) {
fprintf(stderr, "failed to initialize display\n");
return -1;
}
extensions = eglQueryString(c->base.display, EGL_EXTENSIONS);
if (!strstr(extensions, "EGL_KHR_surfaceless_opengl")) {
fprintf(stderr, "EGL_KHR_surfaceless_opengl not available\n");
return -1;
}
eglBindAPI(EGL_OPENGL_ES_API);
c->base.context = eglCreateContext(c->base.display, NULL,
EGL_NO_CONTEXT, context_attribs);
if (c->base.context == NULL) {
fprintf(stderr, "failed to create context\n");
return -1;
}
if (!eglMakeCurrent(c->base.display, EGL_NO_SURFACE,
EGL_NO_SURFACE, c->base.context)) {
fprintf(stderr, "failed to make context current\n");
return -1;
}
return 0;
}
static void
x11_compositor_present(struct wlsc_compositor *base)
{
struct x11_compositor *c = (struct x11_compositor *) base;
struct x11_output *output;
xcb_dri2_copy_region_cookie_t cookie;
struct timeval tv;
uint32_t msec;
glFlush();
wl_list_for_each(output, &c->base.output_list, base.link) {
cookie = xcb_dri2_copy_region_unchecked(c->conn,
output->window,
output->region,
XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT,
XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT);
free(xcb_dri2_copy_region_reply(c->conn, cookie, NULL));
}
gettimeofday(&tv, NULL);
msec = tv.tv_sec * 1000 + tv.tv_usec / 1000;
wlsc_compositor_finish_frame(&c->base, msec);
}
static void
x11_output_set_wm_protocols(struct x11_output *output)
{
xcb_atom_t list[1];
struct x11_compositor *c =
(struct x11_compositor *) output->base.compositor;
list[0] = c->atom.wm_delete_window;
xcb_change_property (c->conn,
XCB_PROP_MODE_REPLACE,
output->window,
c->atom.wm_protocols,
XCB_ATOM_ATOM,
32,
ARRAY_SIZE(list),
list);
}
struct wm_normal_hints {
uint32_t flags;
uint32_t pad[4];
int32_t min_width, min_height;
int32_t max_width, max_height;
int32_t width_inc, height_inc;
int32_t min_aspect_x, min_aspect_y;
int32_t max_aspect_x, max_aspect_y;
int32_t base_width, base_height;
int32_t win_gravity;
};
#define WM_NORMAL_HINTS_MIN_SIZE 16
#define WM_NORMAL_HINTS_MAX_SIZE 32
static int
x11_compositor_create_output(struct x11_compositor *c, int width, int height)
{
static const char name[] = "Wayland Compositor";
struct x11_output *output;
xcb_dri2_dri2_buffer_t *buffers;
xcb_dri2_get_buffers_reply_t *reply;
xcb_dri2_get_buffers_cookie_t cookie;
xcb_screen_iterator_t iter;
xcb_rectangle_t rectangle;
struct wm_normal_hints normal_hints;
unsigned int attachments[] =
{ XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT};
uint32_t mask = XCB_CW_EVENT_MASK | XCB_CW_CURSOR;
uint32_t values[2] = {
XCB_EVENT_MASK_KEY_PRESS |
XCB_EVENT_MASK_KEY_RELEASE |
XCB_EVENT_MASK_BUTTON_PRESS |
XCB_EVENT_MASK_BUTTON_RELEASE |
XCB_EVENT_MASK_POINTER_MOTION |
XCB_EVENT_MASK_EXPOSURE |
XCB_EVENT_MASK_STRUCTURE_NOTIFY |
XCB_EVENT_MASK_ENTER_WINDOW |
XCB_EVENT_MASK_LEAVE_WINDOW,
0
};
EGLint attribs[] = {
EGL_WIDTH, 0,
EGL_HEIGHT, 0,
EGL_DRM_BUFFER_STRIDE_MESA, 0,
EGL_DRM_BUFFER_FORMAT_MESA, EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
EGL_NONE
};
output = malloc(sizeof *output);
if (output == NULL)
return -1;
memset(output, 0, sizeof *output);
wlsc_output_init(&output->base, &c->base, 0, 0, width, height);
values[1] = c->null_cursor;
output->window = xcb_generate_id(c->conn);
iter = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
xcb_create_window(c->conn,
XCB_COPY_FROM_PARENT,
output->window,
iter.data->root,
0, 0,
width, height,
0,
XCB_WINDOW_CLASS_INPUT_OUTPUT,
iter.data->root_visual,
mask, values);
/* Don't resize me. */
memset(&normal_hints, 0, sizeof normal_hints);
normal_hints.flags =
WM_NORMAL_HINTS_MAX_SIZE | WM_NORMAL_HINTS_MIN_SIZE;
normal_hints.min_width = width;
normal_hints.min_height = height;
normal_hints.max_width = width;
normal_hints.max_height = height;
xcb_change_property (c->conn, XCB_PROP_MODE_REPLACE, output->window,
c->atom.wm_normal_hints,
c->atom.wm_size_hints, 32,
sizeof normal_hints / 4,
(uint8_t *) &normal_hints);
xcb_map_window(c->conn, output->window);
/* Set window name. Don't bother with non-EWMH WMs. */
xcb_change_property(c->conn, XCB_PROP_MODE_REPLACE, output->window,
c->atom.net_wm_name, c->atom.utf8_string, 8,
strlen(name), name);
rectangle.x = 0;
rectangle.y = 0;
rectangle.width = width;
rectangle.height = height;
output->region = xcb_generate_id(c->conn);
xcb_xfixes_create_region(c->conn, output->region, 1, &rectangle);
xcb_dri2_create_drawable (c->conn, output->window);
x11_output_set_wm_protocols(output);
cookie = xcb_dri2_get_buffers_unchecked (c->conn,
output->window,
1, 1, attachments);
reply = xcb_dri2_get_buffers_reply (c->conn, cookie, NULL);
if (reply == NULL)
return -1;
buffers = xcb_dri2_get_buffers_buffers (reply);
if (buffers == NULL)
return -1;
if (reply->count != 1) {
fprintf(stderr,
"got wrong number of buffers (%d)\n", reply->count);
return -1;
}
attribs[1] = reply->width;
attribs[3] = reply->height;
attribs[5] = buffers[0].pitch / 4;
output->image =
eglCreateImageKHR(c->base.display, c->base.context,
EGL_DRM_BUFFER_MESA,
(EGLClientBuffer) buffers[0].name,
attribs);
free(reply);
glGenRenderbuffers(1, &output->rbo);
glBindRenderbuffer(GL_RENDERBUFFER, output->rbo);
glEGLImageTargetRenderbufferStorageOES(GL_RENDERBUFFER,
output->image);
glFramebufferRenderbuffer(GL_FRAMEBUFFER,
GL_COLOR_ATTACHMENT0,
GL_RENDERBUFFER,
output->rbo);
wl_list_insert(c->base.output_list.prev, &output->base.link);
return 0;
}
static void
idle_repaint(void *data)
{
struct x11_output *output = data;
struct x11_compositor *c =
(struct x11_compositor *) output->base.compositor;
xcb_xfixes_region_t region;
xcb_dri2_copy_region_cookie_t cookie;
if (output->damage_count <= ARRAY_SIZE(output->damage)) {
region = xcb_generate_id(c->conn);
xcb_xfixes_create_region(c->conn, region,
output->damage_count, output->damage);
} else {
region = output->region;
}
cookie = xcb_dri2_copy_region_unchecked(c->conn,
output->window,
region,
XCB_DRI2_ATTACHMENT_BUFFER_FRONT_LEFT,
XCB_DRI2_ATTACHMENT_BUFFER_BACK_LEFT);
if (region != output->region)
xcb_xfixes_destroy_region(c->conn, region);
free(xcb_dri2_copy_region_reply(c->conn, cookie, NULL));
output->damage_count = 0;
}
static struct x11_output *
x11_compositor_find_output(struct x11_compositor *c, xcb_window_t window)
{
struct x11_output *output;
wl_list_for_each(output, &c->base.output_list, base.link) {
if (output->window == window)
return output;
}
return NULL;
}
static void
x11_compositor_handle_event(int fd, uint32_t mask, void *data)
{
struct x11_compositor *c = data;
struct x11_output *output;
xcb_generic_event_t *event;
struct wl_event_loop *loop;
xcb_client_message_event_t *client_message;
xcb_motion_notify_event_t *motion_notify;
xcb_key_press_event_t *key_press;
xcb_button_press_event_t *button_press;
xcb_expose_event_t *expose;
xcb_rectangle_t *r;
xcb_atom_t atom;
loop = wl_display_get_event_loop(c->base.wl_display);
while (event = xcb_poll_for_event (c->conn), event != NULL) {
switch (event->response_type & ~0x80) {
case XCB_KEY_PRESS:
key_press = (xcb_key_press_event_t *) event;
notify_key(c->base.input_device,
key_press->time, key_press->detail - 8, 1);
break;
case XCB_KEY_RELEASE:
key_press = (xcb_key_press_event_t *) event;
notify_key(c->base.input_device,
key_press->time, key_press->detail - 8, 0);
break;
case XCB_BUTTON_PRESS:
button_press = (xcb_button_press_event_t *) event;
notify_button(c->base.input_device,
button_press->time,
button_press->detail + BTN_LEFT - 1, 1);
break;
case XCB_BUTTON_RELEASE:
button_press = (xcb_button_press_event_t *) event;
notify_button(c->base.input_device,
button_press->time,
button_press->detail + BTN_LEFT - 1, 0);
break;
case XCB_MOTION_NOTIFY:
motion_notify = (xcb_motion_notify_event_t *) event;
notify_motion(c->base.input_device,
motion_notify->time,
motion_notify->event_x,
motion_notify->event_y);
break;
case XCB_EXPOSE:
expose = (xcb_expose_event_t *) event;
output = x11_compositor_find_output(c, expose->window);
if (output->damage_count == 0)
wl_event_loop_add_idle(loop,
idle_repaint, output);
r = &output->damage[output->damage_count++];
if (output->damage_count > 16)
break;
r->x = expose->x;
r->y = expose->y;
r->width = expose->width;
r->height = expose->height;
break;
case XCB_ENTER_NOTIFY:
c->base.focus = 1;
wlsc_compositor_schedule_repaint(&c->base);
break;
case XCB_LEAVE_NOTIFY:
c->base.focus = 0;
wlsc_compositor_schedule_repaint(&c->base);
break;
case XCB_CLIENT_MESSAGE:
client_message = (xcb_client_message_event_t *) event;
atom = client_message->data.data32[0];
if (atom == c->atom.wm_delete_window)
exit(1);
break;
default:
break;
}
free (event);
}
}
#define F(field) offsetof(struct x11_compositor, field)
static void
x11_compositor_get_resources(struct x11_compositor *c)
{
static const struct { const char *name; int offset; } atoms[] = {
{ "WM_PROTOCOLS", F(atom.wm_protocols) },
{ "WM_NORMAL_HINTS", F(atom.wm_normal_hints) },
{ "WM_SIZE_HINTS", F(atom.wm_size_hints) },
{ "WM_DELETE_WINDOW", F(atom.wm_delete_window) },
{ "_NET_WM_NAME", F(atom.net_wm_name) },
{ "UTF8_STRING", F(atom.utf8_string) },
};
xcb_intern_atom_cookie_t cookies[ARRAY_SIZE(atoms)];
xcb_intern_atom_reply_t *reply;
xcb_pixmap_t pixmap;
xcb_gc_t gc;
int i;
uint8_t data[] = { 0, 0, 0, 0 };
for (i = 0; i < ARRAY_SIZE(atoms); i++)
cookies[i] = xcb_intern_atom (c->conn, 0,
strlen(atoms[i].name),
atoms[i].name);
for (i = 0; i < ARRAY_SIZE(atoms); i++) {
reply = xcb_intern_atom_reply (c->conn, cookies[i], NULL);
*(xcb_atom_t *) ((char *) c + atoms[i].offset) = reply->atom;
free(reply);
}
pixmap = xcb_generate_id(c->conn);
gc = xcb_generate_id(c->conn);
xcb_create_pixmap(c->conn, 1, pixmap, c->screen->root, 1, 1);
xcb_create_gc(c->conn, gc, pixmap, 0, NULL);
xcb_put_image(c->conn, XCB_IMAGE_FORMAT_XY_PIXMAP,
pixmap, gc, 1, 1, 0, 0, 0, 32, sizeof data, data);
c->null_cursor = xcb_generate_id(c->conn);
xcb_create_cursor (c->conn, c->null_cursor,
pixmap, pixmap, 0, 0, 0, 0, 0, 0, 1, 1);
xcb_free_gc(c->conn, gc);
xcb_free_pixmap(c->conn, pixmap);
}
static int
x11_authenticate(struct wlsc_compositor *c, uint32_t id)
{
return dri2_authenticate((struct x11_compositor *) c, id);
}
struct wlsc_compositor *
x11_compositor_create(struct wl_display *display, int width, int height)
{
struct x11_compositor *c;
struct wl_event_loop *loop;
xcb_screen_iterator_t s;
c = malloc(sizeof *c);
if (c == NULL)
return NULL;
memset(c, 0, sizeof *c);
c->conn = xcb_connect(0, 0);
if (xcb_connection_has_error(c->conn))
return NULL;
s = xcb_setup_roots_iterator(xcb_get_setup(c->conn));
c->screen = s.data;
x11_compositor_get_resources(c);
c->base.wl_display = display;
x11_compositor_init_egl(c);
/* Can't init base class until we have a current egl context */
if (wlsc_compositor_init(&c->base, display) < 0)
return NULL;
x11_compositor_create_output(c, width, height);
x11_input_create(c);
loop = wl_display_get_event_loop(c->base.wl_display);
c->xcb_source =
wl_event_loop_add_fd(loop, xcb_get_file_descriptor(c->conn),
WL_EVENT_READABLE,
x11_compositor_handle_event, c);
c->base.authenticate = x11_authenticate;
c->base.present = x11_compositor_present;
return &c->base;
}