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Adds wayland support to the cogl EGL winsys

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Wayland now supports integration via standard eglSurfaces which makes it
possible to share more code with other EGL platforms. (though at some
point cogl-winsys-egl.c really needs to gain a more formal
CoglEGLPlatform abstraction so we can rein back on the amount of #ifdefs
we have.)
This commit is contained in:
Robert Bragg 2011-03-17 19:31:34 +00:00
parent 4b6169267c
commit e8b83f2880
5 changed files with 329 additions and 17 deletions
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4
cogl/Makefile.am
View file

@ -331,6 +331,10 @@ if SUPPORT_EGL_PLATFORM_GDL
cogl_sources_c += \
$(srcdir)/winsys/cogl-winsys-egl.c
endif
if SUPPORT_EGL_PLATFORM_WAYLAND
cogl_sources_c += \
$(srcdir)/winsys/cogl-winsys-egl.c
endif
if SUPPORT_STUB
cogl_sources_c += \
$(srcdir)/winsys/cogl-winsys-stub.c

8
cogl/cogl-renderer-private.h
View file

@ -31,6 +31,10 @@
#include <X11/Xlib.h>
#endif
#if COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT
#include <wayland-client.h>
#endif
struct _CoglRenderer
{
CoglObject _parent;
@ -38,6 +42,10 @@ struct _CoglRenderer
const CoglWinsysVtable *winsys_vtable;
#ifdef COGL_HAS_XLIB_SUPPORT
Display *foreign_xdpy;
#endif
#if COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT
struct wl_display *foreign_wayland_display;
struct wl_compositor *foreign_wayland_compositor;
#endif
/* List of callback functions that will be given every native event */
GSList *event_filters;

28
cogl/cogl-renderer.h
View file

@ -37,6 +37,10 @@
#include <X11/Xlib.h>
#endif
#if COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT
#include <wayland-client.h>
#endif
G_BEGIN_DECLS
/**
@ -145,6 +149,30 @@ cogl_renderer_xlib_get_display (CoglRenderer *renderer);
#endif /* COGL_HAS_XLIB */
#if COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT
#define cogl_renderer_wayland_set_foreign_display \
cogl_renderer_wayland_set_foreign_display_EXP
void
cogl_renderer_wayland_set_foreign_display (CoglRenderer *renderer,
struct wl_display *display);
#define cogl_renderer_wayland_set_foreign_compositor \
cogl_renderer_wayland_set_foreign_compositor_EXP
void
cogl_renderer_wayland_set_foreign_compositor (CoglRenderer *renderer,
struct wl_compositor *compositor);
#define cogl_renderer_wayland_get_foreign_display \
cogl_renderer_wayland_get_foreign_display_EXP
struct wl_display *
cogl_renderer_wayland_get_foreign_display (CoglRenderer *renderer);
#define cogl_renderer_wayland_get_foreign_compositor \
cogl_renderer_wayland_get_foreign_compositor_EXP
struct wl_compositor *
cogl_renderer_wayland_get_foreign_compositor (CoglRenderer *renderer);
#endif /* COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT */
#define cogl_renderer_check_onscreen_template \
cogl_renderer_check_onscreen_template_EXP
gboolean

281
cogl/winsys/cogl-winsys-egl.c
View file

@ -43,6 +43,11 @@
#endif
#include "cogl-private.h"
#ifdef COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT
#include <wayland-client.h>
#include <wayland-egl.h>
#endif
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
@ -78,6 +83,12 @@ typedef struct _CoglRendererEGL
CoglRendererXlib _parent;
#endif
#ifdef COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT
struct wl_display *wayland_display;
struct wl_compositor *wayland_compositor;
uint32_t wayland_event_mask;
#endif
EGLDisplay edpy;
EGLint egl_version_major;
@ -109,7 +120,11 @@ typedef struct _CoglDisplayEGL
#endif
EGLContext egl_context;
#ifdef COGL_HAS_EGL_PLATFORM_POWERVR_X11_SUPPORT
#if defined (COGL_HAS_EGL_PLATFORM_POWERVR_X11_SUPPORT)
EGLSurface dummy_surface;
#elif defined (COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT)
struct wl_surface *wayland_surface;
struct wl_egl_window *wayland_egl_native_window;
EGLSurface dummy_surface;
#elif defined (COGL_HAS_EGL_PLATFORM_POWERVR_NULL_SUPPORT) || \
defined (COGL_HAS_EGL_PLATFORM_GDL_SUPPORT)
@ -130,15 +145,25 @@ typedef struct _CoglContextEGL
EGLSurface current_surface;
} CoglContextEGL;
#ifdef COGL_HAS_EGL_PLATFORM_POWERVR_X11_SUPPORT
typedef struct _CoglOnscreenXlib
{
Window xwin;
gboolean is_foreign_xwin;
} CoglOnscreenXlib;
#endif
typedef struct _CoglOnscreenEGL
{
#ifdef COGL_HAS_EGL_PLATFORM_POWERVR_X11_SUPPORT
CoglOnscreenXlib _parent;
#endif
#ifdef COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT
struct wl_egl_window *wayland_egl_native_window;
struct wl_surface *wayland_surface;
#endif
EGLSurface egl_surface;
} CoglOnscreenEGL;
@ -263,6 +288,49 @@ _cogl_winsys_renderer_disconnect (CoglRenderer *renderer)
g_slice_free (CoglRendererEGL, egl_renderer);
}
#ifdef COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT
static void
display_handle_global_cb (struct wl_display *display,
uint32_t id,
const char *interface,
uint32_t version,
void *data)
{
struct wl_compositor **compositor = data;
if (strcmp (interface, "wl_compositor") == 0)
*compositor = wl_compositor_create (display, id, 1);
}
static int
event_mask_update_cb (uint32_t mask, void *user_data)
{
CoglRendererEGL *egl_renderer = user_data;
egl_renderer->wayland_event_mask = mask;
return 0;
}
static void
sync_callback(void *data)
{
int *done = data;
*done = 1;
}
static void
force_roundtrip(struct wl_display *display)
{
int done = 0;
wl_display_sync_callback(display, sync_callback, &done);
wl_display_iterate(display, WL_DISPLAY_WRITABLE);
while (!done)
wl_display_iterate(display, WL_DISPLAY_READABLE);
}
#endif
static gboolean
_cogl_winsys_renderer_connect (CoglRenderer *renderer,
GError **error)
@ -292,6 +360,59 @@ _cogl_winsys_renderer_connect (CoglRenderer *renderer,
status = eglInitialize (egl_renderer->edpy,
&egl_renderer->egl_version_major,
&egl_renderer->egl_version_minor);
#elif defined (COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT)
if (renderer->foreign_wayland_display)
{
egl_renderer->wayland_display = renderer->foreign_wayland_display;
/* XXX: For now we have to assume that if a foreign display is
* given then so is a foreing compositor because there is no way
* to retrospectively be notified of the compositor. */
g_assert (renderer->foreign_wayland_compositor);
egl_renderer->wayland_compositor = renderer->foreign_wayland_compositor;
}
else
{
egl_renderer->wayland_display = wl_display_connect (NULL);
if (!egl_renderer->wayland_display)
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_INIT,
"Failed to connect wayland display");
goto error;
}
/*
* XXX: For some reason, this can only be done after calling
* eglInitialize otherwise eglInitialize fails in
* dri2_initialize_wayland because dri2_dpy->wl_dpy->fd doesn't get
* updated.
*
* XXX: Hmm actually now it seems to work :-/
* There seems to be some fragility about when this is called.
*/
wl_display_add_global_listener (egl_renderer->wayland_display,
display_handle_global_cb,
&egl_renderer->wayland_compositor);
}
egl_renderer->edpy =
eglGetDisplay ((EGLNativeDisplayType)egl_renderer->wayland_display);
status = eglInitialize (egl_renderer->edpy,
&egl_renderer->egl_version_major,
&egl_renderer->egl_version_minor);
wl_display_flush (egl_renderer->wayland_display);
wl_display_get_fd (egl_renderer->wayland_display,
event_mask_update_cb, egl_renderer);
/* Wait until we have been notified about the compositor object */
while (!egl_renderer->wayland_compositor)
wl_display_iterate (egl_renderer->wayland_display,
egl_renderer->wayland_event_mask);
#else
egl_renderer->edpy = eglGetDisplay (EGL_DEFAULT_DISPLAY);
@ -360,7 +481,8 @@ update_winsys_features (CoglContext *context)
COGL_NOTE (WINSYS, " EGL Extensions: %s", egl_extensions);
#ifdef COGL_HAS_EGL_PLATFORM_POWERVR_X11_SUPPORT
#if defined (COGL_HAS_EGL_PLATFORM_POWERVR_X11_SUPPORT) || \
defined (COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT)
context->feature_flags |= COGL_FEATURE_ONSCREEN_MULTIPLE;
COGL_FLAGS_SET (context->winsys_features,
COGL_WINSYS_FEATURE_MULTIPLE_ONSCREEN,
@ -499,6 +621,9 @@ try_create_context (CoglDisplay *display,
#ifdef COGL_HAS_EGL_PLATFORM_POWERVR_X11_SUPPORT
XVisualInfo *xvisinfo;
XSetWindowAttributes attrs;
#endif
#ifdef COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT
struct wl_visual *wayland_visual;
#endif
const char *error_message;
@ -577,11 +702,7 @@ try_create_context (CoglDisplay *display,
if (egl_display->dummy_surface == EGL_NO_SURFACE)
{
/* FIXME: we shouldn't be calling g_set_error here we should
* just set error_message same goes for below. */
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_CONTEXT,
"Unable to create an EGL surface");
error_message = "Unable to create an EGL surface";
goto fail;
}
@ -590,9 +711,51 @@ try_create_context (CoglDisplay *display,
egl_display->dummy_surface,
egl_display->egl_context))
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_CONTEXT,
"Unable to eglMakeCurrent with dummy surface");
error_message = "Unable to eglMakeCurrent with dummy surface";
goto fail;
}
#elif defined (COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT)
egl_display->wayland_surface =
wl_compositor_create_surface (egl_renderer->wayland_compositor);
if (!egl_display->wayland_surface)
{
error_message= "Failed to create a dummy wayland surface";
goto fail;
}
wayland_visual =
wl_display_get_premultiplied_argb_visual (egl_renderer->wayland_display);
egl_display->wayland_egl_native_window =
wl_egl_window_create (egl_display->wayland_surface,
1,
1,
wayland_visual);
if (!egl_display->wayland_egl_native_window)
{
error_message= "Failed to create a dummy wayland native egl surface";
goto fail;
}
egl_display->dummy_surface =
eglCreateWindowSurface (edpy,
egl_display->egl_config,
(EGLNativeWindowType)
egl_display->wayland_egl_native_window,
NULL);
if (egl_display->dummy_surface == EGL_NO_SURFACE)
{
error_message= "Unable to eglMakeCurrent with dummy surface";
goto fail;
}
if (!eglMakeCurrent (edpy,
egl_display->dummy_surface,
egl_display->dummy_surface,
egl_display->egl_context))
{
error_message = "Unable to eglMakeCurrent with dummy surface";
goto fail;
}
@ -605,9 +768,7 @@ try_create_context (CoglDisplay *display,
NULL);
if (egl_display->egl_surface == EGL_NO_SURFACE)
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_CONTEXT,
"Unable to create EGL window surface");
error_message = "Unable to create EGL window surface";
goto fail;
}
@ -616,9 +777,7 @@ try_create_context (CoglDisplay *display,
egl_display->egl_surface,
egl_display->egl_context))
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_CONTEXT,
"Unable to eglMakeCurrent with egl surface");
error_message = "Unable to eglMakeCurrent with egl surface";
goto fail;
}
@ -686,6 +845,24 @@ cleanup_context (CoglDisplay *display)
XDestroyWindow (xlib_renderer->xdpy, xlib_display->dummy_xwin);
xlib_display->dummy_xwin = None;
}
#elif defined (COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT)
if (egl_display->dummy_surface != EGL_NO_SURFACE)
{
eglDestroySurface (egl_renderer->edpy, egl_display->dummy_surface);
egl_display->dummy_surface = EGL_NO_SURFACE;
}
if (egl_display->wayland_egl_native_window)
{
wl_egl_window_destroy (egl_display->wayland_egl_native_window);
egl_display->wayland_egl_native_window = NULL;
}
if (egl_display->wayland_surface)
{
wl_surface_destroy (egl_display->wayland_surface);
egl_display->wayland_surface = NULL;
}
#endif
}
@ -881,8 +1058,14 @@ _cogl_winsys_onscreen_init (CoglOnscreen *onscreen,
CoglRendererXlib *xlib_renderer = display->renderer->winsys;
CoglOnscreenXlib *xlib_onscreen;
Window xwin;
#endif
#ifdef COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT
CoglRendererEGL *egl_renderer = display->renderer->winsys;
#endif
CoglOnscreenEGL *egl_onscreen;
#ifdef COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT
struct wl_visual *wayland_visual;
#endif
g_return_val_if_fail (egl_display->egl_context, FALSE);
@ -1010,6 +1193,43 @@ _cogl_winsys_onscreen_init (CoglOnscreen *onscreen,
egl_display->egl_config,
(NativeWindowType) xlib_onscreen->xwin,
NULL);
#elif defined (COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT)
egl_onscreen->wayland_surface =
wl_compositor_create_surface (egl_renderer->wayland_compositor);
if (!egl_onscreen->wayland_surface)
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_ONSCREEN,
"Error while creating wayland surface for CoglOnscreen");
return FALSE;
}
wayland_visual =
wl_display_get_premultiplied_argb_visual (egl_renderer->wayland_display);
egl_onscreen->wayland_egl_native_window =
wl_egl_window_create (egl_onscreen->wayland_surface,
cogl_framebuffer_get_width (framebuffer),
cogl_framebuffer_get_height (framebuffer),
wayland_visual);
if (!egl_onscreen->wayland_egl_native_window)
{
g_set_error (error, COGL_WINSYS_ERROR,
COGL_WINSYS_ERROR_CREATE_ONSCREEN,
"Error while creating wayland egl native window "
"for CoglOnscreen");
return FALSE;
}
egl_onscreen->egl_surface =
eglCreateWindowSurface (egl_renderer->edpy,
egl_display->egl_config,
(EGLNativeWindowType)
egl_onscreen->wayland_egl_native_window,
NULL);
wl_surface_map_toplevel (egl_onscreen->wayland_surface);
#elif defined (COGL_HAS_EGL_PLATFORM_POWERVR_NULL_SUPPORT)
if (egl_display->have_onscreen)
{
@ -1075,6 +1295,20 @@ _cogl_winsys_onscreen_deinit (CoglOnscreen *onscreen)
if (_cogl_xlib_untrap_errors (&old_state) != Success)
g_warning ("X Error while destroying X window");
#endif
#ifdef COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT
if (egl_onscreen->wayland_egl_native_window)
{
wl_egl_window_destroy (egl_onscreen->wayland_egl_native_window);
egl_onscreen->wayland_egl_native_window = NULL;
}
if (egl_onscreen->wayland_surface)
{
wl_surface_destroy (egl_onscreen->wayland_surface);
egl_onscreen->wayland_surface = NULL;
}
#endif
}
static void
@ -1091,7 +1325,8 @@ _cogl_winsys_onscreen_bind (CoglOnscreen *onscreen)
if (G_UNLIKELY (!onscreen))
{
#ifdef COGL_HAS_EGL_PLATFORM_POWERVR_X11_SUPPORT
#if defined (COGL_HAS_EGL_PLATFORM_POWERVR_X11_SUPPORT) || \
defined (COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT)
eglMakeCurrent (egl_renderer->edpy,
egl_display->dummy_surface,
egl_display->dummy_surface,
@ -1165,14 +1400,24 @@ _cogl_winsys_onscreen_swap_buffers (CoglOnscreen *onscreen)
CoglOnscreenEGL *egl_onscreen = onscreen->winsys;
eglSwapBuffers (egl_renderer->edpy, egl_onscreen->egl_surface);
#if 0
/* XXX: I think really this should be done automatically for
* us in eglSwapBuffers since the spec says eglSwapBuffers
* implicitly flushes client commands. */
while (egl_renderer->wayland_event_mask & WL_DISPLAY_WRITABLE)
wl_display_iterate (egl_renderer->wayland_display,
WL_DISPLAY_WRITABLE);
#endif
}
#ifdef COGL_HAS_EGL_PLATFORM_POWERVR_X11_SUPPORT
static guint32
_cogl_winsys_onscreen_x11_get_window_xid (CoglOnscreen *onscreen)
{
CoglOnscreenXlib *xlib_onscreen = onscreen->winsys;
return xlib_onscreen->xwin;
}
#endif
static unsigned int
_cogl_winsys_onscreen_add_swap_buffers_callback (CoglOnscreen *onscreen,
@ -1257,8 +1502,10 @@ static CoglWinsysVtable _cogl_winsys_vtable =
#endif
.onscreen_update_swap_throttled =
_cogl_winsys_onscreen_update_swap_throttled,
#ifdef COGL_HAS_XLIB_SUPPORT
.onscreen_x11_get_window_xid =
_cogl_winsys_onscreen_x11_get_window_xid,
#endif
.onscreen_add_swap_buffers_callback =
_cogl_winsys_onscreen_add_swap_buffers_callback,
.onscreen_remove_swap_buffers_callback =

25
configure.ac
View file

@ -534,6 +534,31 @@ AS_IF([test "x$enable_gdl_egl_platform" == "xyes"],
AM_CONDITIONAL(SUPPORT_EGL_PLATFORM_GDL,
[test "x$enable_gdl_egl_platform" = "xyes"])
AC_ARG_ENABLE(
[wayland-egl-platform],
[AC_HELP_STRING([--enable-wayland-egl-platform=@<:@no/yes@:>@], [Enable support for the Wayland egl platform @<:@default=no@:>@])],
[],
enable_wayland_egl_platform=no
)
AS_IF([test "x$enable_wayland_egl_platform" == "xyes"],
[
EGL_PLATFORM_COUNT=$((EGL_PLATFORM_COUNT+1))
NEED_EGL=yes
EGL_PLATFORMS="$EGL_PLATFORMS wayland"
PKG_CHECK_EXISTS([wayland-egl],
[
COGL_PKG_REQUIRES="$COGL_PKG_REQUIRES wayland-egl"
COGL_PKG_REQUIRES="$COGL_PKG_REQUIRES wayland-client"
],
[AC_MSG_ERROR([Unable to locate required wayland libraries])])
COGL_DEFINES_SYMBOLS="$COGL_DEFINES_SYMBOLS COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT"
])
AM_CONDITIONAL(SUPPORT_EGL_PLATFORM_WAYLAND,
[test "x$enable_wayland_egl_platform" = "xyes"])
dnl This should go last, since it's the default fallback and we need
dnl to check the value of $EGL_PLATFORM_COUNT here.
AC_ARG_ENABLE(