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weston/compositor/compositor-wayland.c

569 lines
14 KiB

/*
* Copyright © 2010 Benjamin Franzke
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stddef.h>
#define _GNU_SOURCE
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <fcntl.h>
#include <unistd.h>
#include "wayland-client.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"
struct wayland_compositor {
struct wlsc_compositor base;
struct {
struct wl_display *display;
struct wl_compositor *compositor;
struct wl_shell *shell;
struct wl_drm *drm;
struct wl_output *output;
struct {
int32_t x, y, width, height;
} screen_allocation;
char *device_name;
int authenticated;
struct wl_event_source *wl_source;
uint32_t event_mask;
} parent;
struct wl_list window_list;
struct wl_list input_list;
};
struct wayland_output {
struct wlsc_output base;
struct {
struct wl_surface *surface;
struct wl_buffer *buffer[2];
} parent;
EGLImageKHR image[2];
GLuint rbo[2];
uint32_t fb_id[2];
uint32_t current;
};
struct wayland_input {
struct wayland_compositor *compositor;
struct wl_input_device *input_device;
struct wl_list link;
};
static int
wayland_input_create(struct wayland_compositor *c)
{
struct wlsc_input_device *input;
input = malloc(sizeof *input);
if (input == NULL)
return -1;
memset(input, 0, sizeof *input);
wlsc_input_device_init(input, &c->base);
c->base.input_device = &input->input_device;
return 0;
}
static int
wayland_compositor_init_egl(struct wayland_compositor *c)
{
EGLint major, minor;
const char *extensions;
drm_magic_t magic;
int fd;
static const EGLint context_attribs[] = {
EGL_CONTEXT_CLIENT_VERSION, 2,
EGL_NONE
};
fd = open(c->parent.device_name, O_RDWR);
if (fd < 0) {
fprintf(stderr, "drm open failed: %m\n");
return -1;
}
wlsc_drm_init(&c->base, fd, c->parent.device_name);
if (drmGetMagic(fd, &magic)) {
fprintf(stderr, "DRI2: failed to get drm magic");
return -1;
}
wl_drm_authenticate(c->parent.drm, magic);
wl_display_iterate(c->parent.display, WL_DISPLAY_WRITABLE);
while (!c->parent.authenticated)
wl_display_iterate(c->parent.display, WL_DISPLAY_READABLE);
c->base.display = eglGetDRMDisplayMESA(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;
}
if (!eglBindAPI(EGL_OPENGL_ES_API)) {
fprintf(stderr, "failed to bind EGL_OPENGL_ES_API\n");
return -1;
}
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
frame_callback(void *data, uint32_t time)
{
struct wayland_compositor *c = (struct wayland_compositor *) data;
wlsc_compositor_finish_frame(&c->base, time);
}
static void
wayland_compositor_present(struct wlsc_compositor *base)
{
struct wayland_compositor *c = (struct wayland_compositor *) base;
struct wayland_output *output;
glFlush();
wl_list_for_each(output, &base->output_list, base.link) {
output->current ^= 1;
glFramebufferRenderbuffer(GL_FRAMEBUFFER,
GL_COLOR_ATTACHMENT0,
GL_RENDERBUFFER,
output->rbo[output->current]);
wl_surface_attach(output->parent.surface,
output->parent.buffer[output->current ^ 1],
0, 0);
wl_surface_damage(output->parent.surface, 0, 0,
output->base.width, output->base.height);
}
wl_display_frame_callback(c->parent.display, frame_callback, c);
}
static int
wayland_authenticate(struct wlsc_compositor *ec, uint32_t id)
{
struct wayland_compositor *c = (struct wayland_compositor *) ec;
wl_drm_authenticate(c->parent.drm, id);
/* FIXME: recv drm_authenticated event from parent? */
wl_display_iterate(c->parent.display, WL_DISPLAY_WRITABLE);
return 0;
}
static int
wayland_compositor_create_output(struct wayland_compositor *c,
int width, int height)
{
struct wayland_output *output;
struct wl_visual *visual;
int i;
EGLint name, stride, attribs[] = {
EGL_WIDTH, 0,
EGL_HEIGHT, 0,
EGL_DRM_BUFFER_FORMAT_MESA, EGL_DRM_BUFFER_FORMAT_ARGB32_MESA,
EGL_DRM_BUFFER_USE_MESA, EGL_DRM_BUFFER_USE_SCANOUT_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);
output->parent.surface =
wl_compositor_create_surface(c->parent.compositor);
wl_surface_set_user_data(output->parent.surface, output);
glGenRenderbuffers(2, output->rbo);
visual = wl_display_get_premultiplied_argb_visual(c->parent.display);
for (i = 0; i < 2; i++) {
glBindRenderbuffer(GL_RENDERBUFFER, output->rbo[i]);
attribs[1] = width;
attribs[3] = height;
output->image[i] =
eglCreateDRMImageMESA(c->base.display, attribs);
glEGLImageTargetRenderbufferStorageOES(GL_RENDERBUFFER,
output->image[i]);
eglExportDRMImageMESA(c->base.display, output->image[i],
&name, NULL, &stride);
output->parent.buffer[i] =
wl_drm_create_buffer(c->parent.drm, name,
width, height,
stride, visual);
}
output->current = 0;
glFramebufferRenderbuffer(GL_FRAMEBUFFER,
GL_COLOR_ATTACHMENT0,
GL_RENDERBUFFER,
output->rbo[output->current]);
wl_surface_attach(output->parent.surface,
output->parent.buffer[output->current], 0, 0);
wl_surface_map_toplevel(output->parent.surface);
glClearColor(0, 0, 0, 0.5);
wl_list_insert(c->base.output_list.prev, &output->base.link);
return 0;
}
static struct wl_buffer *
create_invisible_pointer(struct wayland_compositor *c)
{
struct wlsc_drm_buffer *wlsc_buffer;
struct wl_buffer *buffer;
int name, stride;
struct wl_visual *visual;
GLuint texture;
const int width = 1, height = 1;
const GLubyte data[] = { 0, 0, 0, 0 };
glGenTextures(1, &texture);
glBindTexture(GL_TEXTURE_2D, 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);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
visual = wl_display_get_premultiplied_argb_visual(c->parent.display);
wlsc_buffer = wlsc_drm_buffer_create(&c->base, width, height, visual);
glEGLImageTargetTexture2DOES(GL_TEXTURE_2D, wlsc_buffer->image);
glTexSubImage2D(GL_TEXTURE_2D, 0, 0, 0, width, height,
GL_RGBA, GL_UNSIGNED_BYTE, data);
eglExportDRMImageMESA(c->base.display, wlsc_buffer->image,
&name, NULL, &stride);
buffer = wl_drm_create_buffer(c->parent.drm, name,
width, height,
stride, visual);
return buffer;
}
/* Events received from the wayland-server this compositor is client of: */
/* parent output interface */
static void
display_handle_geometry(void *data,
struct wl_output *output,
int32_t x, int32_t y,
int32_t width, int32_t height)
{
struct wayland_compositor *c = data;
c->parent.screen_allocation.x = x;
c->parent.screen_allocation.y = y;
c->parent.screen_allocation.width = width;
c->parent.screen_allocation.height = height;
}
static const struct wl_output_listener output_listener = {
display_handle_geometry,
};
/* parent shell interface */
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)
{
#if 0
struct output *output = wl_surface_get_user_data(surface);
/* FIXME: add resize? */
#endif
}
static const struct wl_shell_listener shell_listener = {
handle_configure,
};
/* parent drm interface */
static void
drm_handle_device(void *data, struct wl_drm *drm, const char *device)
{
struct wayland_compositor *c = data;
c->parent.device_name = strdup(device);
}
static void drm_handle_authenticated(void *data, struct wl_drm *drm)
{
struct wayland_compositor *c = data;
c->parent.authenticated = 1;
}
static const struct wl_drm_listener drm_listener = {
drm_handle_device,
drm_handle_authenticated
};
/* parent input interface */
static void
input_handle_motion(void *data, struct wl_input_device *input_device,
uint32_t time,
int32_t x, int32_t y, int32_t sx, int32_t sy)
{
struct wayland_input *input = data;
struct wayland_compositor *c = input->compositor;
notify_motion(c->base.input_device, time, sx, sy);
}
static void
input_handle_button(void *data,
struct wl_input_device *input_device,
uint32_t time, uint32_t button, uint32_t state)
{
struct wayland_input *input = data;
struct wayland_compositor *c = input->compositor;
notify_button(c->base.input_device, time, button, state);
}
static void
input_handle_key(void *data, struct wl_input_device *input_device,
uint32_t time, uint32_t key, uint32_t state)
{
struct wayland_input *input = data;
struct wayland_compositor *c = input->compositor;
notify_key(c->base.input_device, time, key, state);
}
static void
input_handle_pointer_focus(void *data,
struct wl_input_device *input_device,
uint32_t time, struct wl_surface *surface,
int32_t x, int32_t y, int32_t sx, int32_t sy)
{
struct wayland_input *input = data;
struct wayland_compositor *c = input->compositor;
static struct wl_buffer *pntr_buffer = NULL;
if (surface) {
c->base.focus = 1;
/* FIXME: extend protocol to allow hiding the cursor? */
if (pntr_buffer == NULL)
pntr_buffer = create_invisible_pointer(c);
wl_input_device_attach(input_device, time, pntr_buffer, x, y);
} else {
/* FIXME. hide our own pointer */
c->base.focus = 0;
}
}
static void
input_handle_keyboard_focus(void *data,
struct wl_input_device *input_device,
uint32_t time,
struct wl_surface *surface,
struct wl_array *keys)
{
/* FIXME: sth to be done here? */
}
static const struct wl_input_device_listener input_device_listener = {
input_handle_motion,
input_handle_button,
input_handle_key,
input_handle_pointer_focus,
input_handle_keyboard_focus,
};
static void
display_add_input(struct wayland_compositor *c, uint32_t id)
{
struct wayland_input *input;
input = malloc(sizeof *input);
if (input == NULL)
return;
memset(input, 0, sizeof *input);
input->compositor = c;
input->input_device = wl_input_device_create(c->parent.display, id);
wl_list_insert(c->input_list.prev, &input->link);
wl_input_device_add_listener(input->input_device,
&input_device_listener, input);
wl_input_device_set_user_data(input->input_device, input);
}
static void
display_handle_global(struct wl_display *display, uint32_t id,
const char *interface, uint32_t version, void *data)
{
struct wayland_compositor *c = data;
if (strcmp(interface, "compositor") == 0) {
c->parent.compositor = wl_compositor_create(display, id);
} else if (strcmp(interface, "output") == 0) {
c->parent.output = wl_output_create(display, id);
wl_output_add_listener(c->parent.output, &output_listener, c);
} else if (strcmp(interface, "input_device") == 0) {
display_add_input(c, id);
} else if (strcmp(interface, "shell") == 0) {
c->parent.shell = wl_shell_create(display, id);
wl_shell_add_listener(c->parent.shell, &shell_listener, c);
} else if (strcmp(interface, "drm") == 0) {
c->parent.drm = wl_drm_create(display, id);
wl_drm_add_listener(c->parent.drm, &drm_listener, c);
}
}
static int
update_event_mask(uint32_t mask, void *data)
{
struct wayland_compositor *c = data;
c->parent.event_mask = mask;
if (c->parent.wl_source)
wl_event_source_fd_update(c->parent.wl_source, mask);
return 0;
}
static void
wayland_compositor_handle_event(int fd, uint32_t mask, void *data)
{
struct wayland_compositor *c = data;
if (mask & WL_EVENT_READABLE)
wl_display_iterate(c->parent.display, WL_DISPLAY_READABLE);
if (mask & WL_EVENT_WRITEABLE)
wl_display_iterate(c->parent.display, WL_DISPLAY_WRITABLE);
}
static void
wayland_destroy(struct wlsc_compositor *ec)
{
free(ec);
}
struct wlsc_compositor *
wayland_compositor_create(struct wl_display *display, int width, int height)
{
struct wayland_compositor *c;
struct wl_event_loop *loop;
int fd;
c = malloc(sizeof *c);
if (c == NULL)
return NULL;
memset(c, 0, sizeof *c);
c->parent.display = wl_display_connect(NULL);
if (c->parent.display == NULL) {
fprintf(stderr, "failed to create display: %m\n");
return NULL;
}
wl_list_init(&c->input_list);
wl_display_add_global_listener(c->parent.display,
display_handle_global, c);
wl_display_iterate(c->parent.display, WL_DISPLAY_READABLE);
c->base.wl_display = display;
if (wayland_compositor_init_egl(c) < 0)
return NULL;
/* Can't init base class until we have a current egl context */
if (wlsc_compositor_init(&c->base, display) < 0)
return NULL;
if (wayland_compositor_create_output(c, width, height) < 0)
return NULL;
if (wayland_input_create(c) < 0)
return NULL;
loop = wl_display_get_event_loop(c->base.wl_display);
fd = wl_display_get_fd(c->parent.display, update_event_mask, c);
c->parent.wl_source =
wl_event_loop_add_fd(loop, fd, c->parent.event_mask,
wayland_compositor_handle_event, c);
if (c->parent.wl_source == NULL)
return NULL;
c->base.destroy = wayland_destroy;
c->base.authenticate = wayland_authenticate;
c->base.present = wayland_compositor_present;
return &c->base;
}