dlopen the compositor, add a glx compositor.

dev
Kristian Høgsberg 16 years ago
parent 61ba898b73
commit 5503bf82c4
  1. 40
      Makefile
  2. 27
      egl-compositor.c
  3. 307
      glx-compositor.c
  4. 49
      wayland.c
  5. 4
      wayland.h

@ -1,16 +1,22 @@
CFLAGS += -Wall -g $(shell pkg-config --cflags libffi libdrm) CFLAGS = -Wall -g
LDLIBS += $(shell pkg-config --libs libffi libdrm)
EAGLE_CFLAGS = -I../eagle EAGLE_CFLAGS = -I../eagle
EAGLE_LDLIBS = -L../eagle -leagle EAGLE_LDLIBS = -L../eagle -leagle
clients = flower pointer background window clients = flower pointer background window
compositors = egl-compositor.so glx-compositor.so
all : wayland $(clients) all : wayland libwayland.so $(compositors) $(clients)
wayland_objs = wayland.o event-loop.o connection.o hash.o input.o egl-compositor.o wayland_objs = \
wayland : CFLAGS += $(EAGLE_CFLAGS) wayland.o \
wayland : LDLIBS += $(EAGLE_LDLIBS) event-loop.o \
connection.o \
hash.o \
input.o
wayland : CFLAGS += $(shell pkg-config --cflags libffi)
wayland : LDLIBS += $(shell pkg-config --libs libffi) -ldl -rdynamic
wayland : $(wayland_objs) wayland : $(wayland_objs)
gcc -o $@ $(LDLIBS) $(wayland_objs) gcc -o $@ $(LDLIBS) $(wayland_objs)
@ -18,7 +24,23 @@ wayland : $(wayland_objs)
libwayland_objs = wayland-client.o connection.o libwayland_objs = wayland-client.o connection.o
libwayland.so : $(libwayland_objs) libwayland.so : $(libwayland_objs)
gcc -o $@ $(libwayland_objs) -shared
$(compositors) $(clients) : CFLAGS += $(shell pkg-config --cflags libdrm)
egl_compositor_objs = egl-compositor.o
egl-compositor.so : CFLAGS += $(EAGLE_CFLAGS)
egl-compositor.so : LDLIBS += $(EAGLE_LDLIBS) -rdynamic
egl-compositor.so : $(egl_compositor_objs)
glx_compositor_objs = glx-compositor.o
glx-compositor.so : LDLIBS += -lGL
glx-compositor.so : $(glx_compositor_objs)
libwayland.so $(compositors) :
gcc -o $@ $^ $(LDLIBS) -shared
flower_objs = flower.o flower_objs = flower.o
pointer_objs = pointer.o pointer_objs = pointer.o
@ -26,7 +48,7 @@ background_objs = background.o
window_objs = window.o gears.o window_objs = window.o gears.o
$(clients) : CFLAGS += $(shell pkg-config --cflags cairo) $(clients) : CFLAGS += $(shell pkg-config --cflags cairo)
$(clients) : LDLIBS += $(shell pkg-config --libs cairo gdk-pixbuf-2.0) -lrt $(clients) : LDLIBS += $(shell pkg-config --libs cairo) -lrt
background : CFLAGS += $(shell pkg-config --cflags gdk-pixbuf-2.0) background : CFLAGS += $(shell pkg-config --cflags gdk-pixbuf-2.0)
background : LDLIBS += $(shell pkg-config --libs gdk-pixbuf-2.0) background : LDLIBS += $(shell pkg-config --libs gdk-pixbuf-2.0)
@ -44,4 +66,4 @@ $(clients) :
gcc -o $@ -L. -lwayland $(LDLIBS) $^ gcc -o $@ -L. -lwayland $(LDLIBS) $^
clean : clean :
rm -f $(clients) wayland *.o libwayland.so rm -f $(clients) wayland *.o *.so

@ -85,7 +85,8 @@ repaint(void *data)
eglSwapBuffers(ec->display, ec->surface); eglSwapBuffers(ec->display, ec->surface);
} }
static void schedule_repaint(struct egl_compositor *ec) static void
schedule_repaint(struct egl_compositor *ec)
{ {
struct wl_event_loop *loop; struct wl_event_loop *loop;
@ -93,8 +94,9 @@ static void schedule_repaint(struct egl_compositor *ec)
wl_event_loop_add_idle(loop, repaint, ec); wl_event_loop_add_idle(loop, repaint, ec);
} }
void notify_surface_create(struct wl_compositor *compositor, static void
struct wl_surface *surface) notify_surface_create(struct wl_compositor *compositor,
struct wl_surface *surface)
{ {
struct surface_data *sd; struct surface_data *sd;
@ -108,8 +110,9 @@ void notify_surface_create(struct wl_compositor *compositor,
glGenTextures(1, &sd->texture); glGenTextures(1, &sd->texture);
} }
void notify_surface_destroy(struct wl_compositor *compositor, static void
struct wl_surface *surface) notify_surface_destroy(struct wl_compositor *compositor,
struct wl_surface *surface)
{ {
struct egl_compositor *ec = (struct egl_compositor *) compositor; struct egl_compositor *ec = (struct egl_compositor *) compositor;
struct surface_data *sd; struct surface_data *sd;
@ -128,9 +131,10 @@ void notify_surface_destroy(struct wl_compositor *compositor,
schedule_repaint(ec); schedule_repaint(ec);
} }
void notify_surface_attach(struct wl_compositor *compositor, static void
struct wl_surface *surface, uint32_t name, notify_surface_attach(struct wl_compositor *compositor,
uint32_t width, uint32_t height, uint32_t stride) struct wl_surface *surface, uint32_t name,
uint32_t width, uint32_t height, uint32_t stride)
{ {
struct egl_compositor *ec = (struct egl_compositor *) compositor; struct egl_compositor *ec = (struct egl_compositor *) compositor;
struct surface_data *sd; struct surface_data *sd;
@ -158,8 +162,9 @@ void notify_surface_attach(struct wl_compositor *compositor,
schedule_repaint(ec); schedule_repaint(ec);
} }
void notify_surface_map(struct wl_compositor *compositor, static void
struct wl_surface *surface, struct wl_map *map) notify_surface_map(struct wl_compositor *compositor,
struct wl_surface *surface, struct wl_map *map)
{ {
struct egl_compositor *ec = (struct egl_compositor *) compositor; struct egl_compositor *ec = (struct egl_compositor *) compositor;
struct surface_data *sd; struct surface_data *sd;
@ -173,7 +178,7 @@ void notify_surface_map(struct wl_compositor *compositor,
schedule_repaint(ec); schedule_repaint(ec);
} }
struct wl_compositor_interface interface = { static const struct wl_compositor_interface interface = {
notify_surface_create, notify_surface_create,
notify_surface_destroy, notify_surface_destroy,
notify_surface_attach, notify_surface_attach,

@ -0,0 +1,307 @@
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <stdint.h>
#include <i915_drm.h>
#include <sys/ioctl.h>
#include <sys/mman.h>
#include <fcntl.h>
#include <unistd.h>
#include <linux/fb.h>
#include <X11/Xlib.h>
#include <X11/keysym.h>
#include <GL/gl.h>
#include <GL/glx.h>
#include "wayland.h"
#define ARRAY_LENGTH(a) (sizeof (a) / sizeof (a)[0])
struct glx_compositor {
struct wl_compositor base;
Display *display;
GLXContext context;
Window window;
struct wl_display *wl_display;
int gem_fd;
struct wl_event_source *x_source;
};
struct surface_data {
GLuint texture;
struct wl_map map;
};
static void
repaint(void *data)
{
struct glx_compositor *gc = data;
struct wl_surface_iterator *iterator;
struct wl_surface *surface;
struct surface_data *sd;
GLint vertices[12];
GLint tex_coords[12] = { 0, 0, 0, 1, 1, 0, 1, 1 };
GLuint indices[4] = { 0, 1, 2, 3 };
iterator = wl_surface_iterator_create(gc->wl_display, 0);
while (wl_surface_iterator_next(iterator, &surface)) {
sd = wl_surface_get_data(surface);
if (sd == NULL)
continue;
vertices[0] = sd->map.x;
vertices[1] = sd->map.y;
vertices[2] = 0;
vertices[3] = sd->map.x;
vertices[4] = sd->map.y + sd->map.height;
vertices[5] = 0;
vertices[6] = sd->map.x + sd->map.width;
vertices[7] = sd->map.y;
vertices[8] = 0;
vertices[9] = sd->map.x + sd->map.width;
vertices[10] = sd->map.y + sd->map.height;
vertices[11] = 0;
glBindTexture(GL_TEXTURE_2D, sd->texture);
glEnable(GL_TEXTURE_2D);
glEnable(GL_BLEND);
/* Assume pre-multiplied alpha for now, this probably
* needs to be a wayland visual type of thing. */
glBlendFunc(GL_ONE, GL_ONE_MINUS_SRC_ALPHA);
glEnableClientState(GL_VERTEX_ARRAY);
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glVertexPointer(3, GL_INT, 0, vertices);
glTexCoordPointer(2, GL_INT, 0, tex_coords);
glDrawElements(GL_TRIANGLE_STRIP, 4, GL_UNSIGNED_INT, indices);
}
wl_surface_iterator_destroy(iterator);
glXSwapBuffers(gc->display, gc->window);
}
static void
schedule_repaint(struct glx_compositor *gc)
{
struct wl_event_loop *loop;
loop = wl_display_get_event_loop(gc->wl_display);
wl_event_loop_add_idle(loop, repaint, gc);
}
static void
notify_surface_create(struct wl_compositor *compositor,
struct wl_surface *surface)
{
struct surface_data *sd;
sd = malloc(sizeof *sd);
if (sd == NULL)
return;
wl_surface_set_data(surface, sd);
glGenTextures(1, &sd->texture);
}
static void
notify_surface_destroy(struct wl_compositor *compositor,
struct wl_surface *surface)
{
struct glx_compositor *gc = (struct glx_compositor *) compositor;
struct surface_data *sd;
sd = wl_surface_get_data(surface);
if (sd == NULL)
return;
glDeleteTextures(1, &sd->texture);
free(sd);
schedule_repaint(gc);
}
static void
notify_surface_attach(struct wl_compositor *compositor,
struct wl_surface *surface, uint32_t name,
uint32_t width, uint32_t height,
uint32_t stride)
{
struct glx_compositor *gc = (struct glx_compositor *) compositor;
struct surface_data *sd;
struct drm_gem_open open_arg;
struct drm_gem_close close_arg;
struct drm_i915_gem_pread pread;
uint32_t size;
void *data;
int ret;
sd = wl_surface_get_data(surface);
if (sd == NULL)
return;
open_arg.name = name;
ret = ioctl(gc->gem_fd, DRM_IOCTL_GEM_OPEN, &open_arg);
if (ret != 0) {
fprintf(stderr,
"failed to gem_open name %d, fd=%d: %m\n",
name, gc->gem_fd);
return;
}
size = height * stride;
data = malloc(size);
if (data == NULL) {
fprintf(stderr, "malloc for gem_pread failed\n");
return;
}
pread.handle = open_arg.handle;
pread.pad = 0;
pread.offset = 0;
pread.size = size;
pread.data_ptr = (long) data;
if (ioctl(gc->gem_fd, DRM_IOCTL_I915_GEM_PREAD, &pread)) {
fprintf(stderr, "gem_pread failed");
return;
}
close_arg.handle = open_arg.handle;
ret = ioctl(gc->gem_fd, DRM_IOCTL_GEM_CLOSE, &close_arg);
if (ret != 0) {
fprintf(stderr, "failed to gem_close name %d: %m\n", name);
return;
}
glBindTexture(GL_TEXTURE_2D, sd->texture);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_REPLACE);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_WRAP_R, GL_REPEAT);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameterf(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, width, height, 0,
GL_BGRA, GL_UNSIGNED_BYTE, data);
free(data);
schedule_repaint(gc);
}
static void
notify_surface_map(struct wl_compositor *compositor,
struct wl_surface *surface, struct wl_map *map)
{
struct glx_compositor *gc = (struct glx_compositor *) compositor;
struct surface_data *sd;
sd = wl_surface_get_data(surface);
if (sd == NULL)
return;
sd->map = *map;
schedule_repaint(gc);
}
static const struct wl_compositor_interface interface = {
notify_surface_create,
notify_surface_destroy,
notify_surface_attach,
notify_surface_map
};
static const char gem_device[] = "/dev/dri/card0";
static void
display_data(int fd, uint32_t mask, void *data)
{
struct glx_compositor *gc = data;
XEvent ev;
while (XPending(gc->display) > 0) {
XNextEvent(gc->display, &ev);
/* Some day we'll do something useful with these events. */
}
}
struct wl_compositor *
wl_compositor_create(struct wl_display *display)
{
static int attribs[] = {
GLX_RGBA,
GLX_RED_SIZE, 1,
GLX_GREEN_SIZE, 1,
GLX_BLUE_SIZE, 1,
GLX_DOUBLEBUFFER,
GLX_DEPTH_SIZE, 1,
None
};
struct glx_compositor *gc;
const int x = 100, y = 100, width = 1024, height = 768;
XSetWindowAttributes attr;
unsigned long mask;
Window root;
XVisualInfo *visinfo;
int screen;
struct wl_event_loop *loop;
gc = malloc(sizeof *gc);
if (gc == NULL)
return NULL;
gc->base.interface = &interface;
gc->wl_display = display;
gc->display = XOpenDisplay(NULL);
if (gc->display == NULL) {
free(gc);
return NULL;
}
loop = wl_display_get_event_loop(gc->wl_display);
gc->x_source = wl_event_loop_add_fd(loop,
ConnectionNumber(gc->display),
WL_EVENT_READABLE,
display_data, gc);
screen = DefaultScreen(gc->display);
root = RootWindow(gc->display, screen);
visinfo = glXChooseVisual(gc->display, screen, attribs);
/* window attributes */
attr.background_pixel = 0;
attr.border_pixel = 0;
attr.colormap = XCreateColormap(gc->display,
root, visinfo->visual, AllocNone);
attr.event_mask = StructureNotifyMask | ExposureMask | KeyPressMask;
mask = CWBackPixel | CWBorderPixel | CWColormap | CWEventMask;
gc->window = XCreateWindow(gc->display, root, x, y, width, height,
0, visinfo->depth, InputOutput,
visinfo->visual, mask, &attr);
gc->context = glXCreateContext(gc->display, visinfo, NULL, True);
XMapWindow(gc->display, gc->window);
glXMakeCurrent(gc->display, gc->window, gc->context);
glViewport(0, 0, width, height);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
glOrtho(0, width, height, 0, 0, 1000.0);
glMatrixMode(GL_MODELVIEW);
glClearColor(0.0, 0.05, 0.2, 0.0);
gc->gem_fd = open(gem_device, O_RDWR);
if (gc->gem_fd < 0) {
fprintf(stderr, "failed to open drm device\n");
return NULL;
}
schedule_repaint(gc);
return &gc->base;
}

@ -7,6 +7,7 @@
#include <unistd.h> #include <unistd.h>
#include <sys/socket.h> #include <sys/socket.h>
#include <sys/un.h> #include <sys/un.h>
#include <dlfcn.h>
#include <ffi.h> #include <ffi.h>
#include "wayland.h" #include "wayland.h"
@ -98,7 +99,7 @@ static void
wl_surface_destroy(struct wl_client *client, wl_surface_destroy(struct wl_client *client,
struct wl_surface *surface) struct wl_surface *surface)
{ {
struct wl_compositor_interface *interface; const struct wl_compositor_interface *interface;
interface = client->display->compositor->interface; interface = client->display->compositor->interface;
interface->notify_surface_destroy(client->display->compositor, interface->notify_surface_destroy(client->display->compositor,
@ -111,7 +112,7 @@ wl_surface_attach(struct wl_client *client,
struct wl_surface *surface, uint32_t name, struct wl_surface *surface, uint32_t name,
uint32_t width, uint32_t height, uint32_t stride) uint32_t width, uint32_t height, uint32_t stride)
{ {
struct wl_compositor_interface *interface; const struct wl_compositor_interface *interface;
interface = client->display->compositor->interface; interface = client->display->compositor->interface;
interface->notify_surface_attach(client->display->compositor, interface->notify_surface_attach(client->display->compositor,
@ -129,7 +130,7 @@ void
wl_surface_map(struct wl_client *client, struct wl_surface *surface, wl_surface_map(struct wl_client *client, struct wl_surface *surface,
int32_t x, int32_t y, int32_t width, int32_t height) int32_t x, int32_t y, int32_t width, int32_t height)
{ {
struct wl_compositor_interface *interface; const struct wl_compositor_interface *interface;
/* FIXME: This needs to take a tri-mesh argument... - count /* FIXME: This needs to take a tri-mesh argument... - count
* and a list of tris. 0 tris means unmap. */ * and a list of tris. 0 tris means unmap. */
@ -170,7 +171,7 @@ struct wl_surface *
wl_surface_create(struct wl_display *display, uint32_t id) wl_surface_create(struct wl_display *display, uint32_t id)
{ {
struct wl_surface *surface; struct wl_surface *surface;
struct wl_compositor_interface *interface; const struct wl_compositor_interface *interface;
surface = malloc(sizeof *surface); surface = malloc(sizeof *surface);
if (surface == NULL) if (surface == NULL)
@ -706,10 +707,41 @@ wl_surface_iterator_destroy(struct wl_surface_iterator *iterator)
free(iterator); free(iterator);
} }
static int
load_compositor(struct wl_display *display, const char *path)
{
struct wl_compositor *(*create)(struct wl_display *display);
struct wl_compositor *compositor;
void *p;
p = dlopen(path, RTLD_LAZY | RTLD_GLOBAL);
if (p == NULL) {
fprintf(stderr, "failed to open compositor %s: %s\n",
path, dlerror());
return -1;
}
create = dlsym(p, "wl_compositor_create");
if (create == NULL) {
fprintf(stderr, "failed to look up compositor constructor\n");
return -1;
}
compositor = create(display);
if (compositor == NULL) {
fprintf(stderr, "couldn't create compositor\n");
return -1;
}
wl_display_set_compositor(display, compositor);
return 0;
}
int main(int argc, char *argv[]) int main(int argc, char *argv[])
{ {
struct wl_display *display; struct wl_display *display;
struct wl_compositor *compositor; const char *compositor = "egl-compositor.so";
display = wl_display_create(); display = wl_display_create();
@ -718,10 +750,9 @@ int main(int argc, char *argv[])
exit(EXIT_FAILURE); exit(EXIT_FAILURE);
} }
compositor = wl_compositor_create(display); if (argc == 2)
wl_display_set_compositor(display, compositor); compositor = argv[1];
load_compositor(display, compositor);
printf("wayland online, display is %p\n", display);
wl_display_run(display); wl_display_run(display);

@ -113,7 +113,7 @@ wl_display_post_button_event(struct wl_display *display,
struct wl_object *source, int button, int state); struct wl_object *source, int button, int state);
struct wl_compositor { struct wl_compositor {
struct wl_compositor_interface *interface; const struct wl_compositor_interface *interface;
}; };
struct wl_compositor_interface { struct wl_compositor_interface {
@ -128,8 +128,6 @@ struct wl_compositor_interface {
struct wl_surface *surface, struct wl_map *map); struct wl_surface *surface, struct wl_map *map);
}; };
struct wl_compositor *wl_compositor_create(struct wl_display *display);
void wl_display_set_compositor(struct wl_display *display, void wl_display_set_compositor(struct wl_display *display,
struct wl_compositor *compositor); struct wl_compositor *compositor);

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