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update backend to use lazy context/stage creation

Browse Source 
http://bugzilla.openedhand.com/show_bug.cgi?id=2056
This commit is contained in:
Brian Tarricone 2010-03-25 19:37:26 -07:00 committed by Neil Roberts
parent 07880d8b74
commit e2a990dfd5
4 changed files with 235 additions and 232 deletions
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171
clutter/eglx/clutter-backend-egl.c
View File

@ -32,7 +32,7 @@ clutter_backend_egl_post_parse (ClutterBackend *backend,
EGLBoolean status;
backend_egl->edpy =
eglGetDisplay ((NativeDisplayType) backend_x11->xdpy);
eglGetDisplay ((EGLNativeDisplayType) backend_x11->xdpy);
status = eglInitialize (backend_egl->edpy,
&backend_egl->egl_version_major,
@ -57,13 +57,120 @@ clutter_backend_egl_post_parse (ClutterBackend *backend,
return TRUE;
}
static gboolean
clutter_backend_egl_create_context (ClutterBackend *backend,
GError **error)
{
ClutterBackendEGL *backend_egl;
ClutterBackendX11 *backend_x11;
EGLConfig config;
EGLint config_count = 0;
EGLBoolean status;
EGLint cfg_attribs[] = {
/* NB: This must be the first attribute, since we may
* try and fallback to no stencil buffer */
EGL_STENCIL_SIZE, 8,
EGL_RED_SIZE, 5,
EGL_GREEN_SIZE, 6,
EGL_BLUE_SIZE, 5,
EGL_BUFFER_SIZE, EGL_DONT_CARE,
#ifdef HAVE_COGL_GLES2
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
#else /* HAVE_COGL_GLES2 */
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
#endif /* HAVE_COGL_GLES2 */
EGL_NONE
};
EGLDisplay edpy;
gint retry_cookie = 0;
backend = clutter_get_default_backend ();
backend_egl = CLUTTER_BACKEND_EGL (backend);
if (backend_egl->egl_context != EGL_NO_CONTEXT)
return TRUE;
backend_x11 = CLUTTER_BACKEND_X11 (backend);
edpy = clutter_eglx_display ();
retry:
/* Here we can change the attributes depending on the fallback count... */
/* Some GLES hardware can't support a stencil buffer: */
if (retry_cookie == 1)
{
g_warning ("Trying with stencil buffer disabled...");
cfg_attribs[1 /* EGL_STENCIL_SIZE */] = 0;
}
/* XXX: at this point we only have one fallback */
status = eglChooseConfig (edpy,
cfg_attribs,
&config, 1,
&config_count);
if (status != EGL_TRUE || config_count == 0)
{
g_warning ("eglChooseConfig failed");
goto fail;
}
if (G_UNLIKELY (backend_egl->egl_context == EGL_NO_CONTEXT))
{
#ifdef HAVE_COGL_GLES2
static const EGLint attribs[3]
= { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE };
backend_egl->egl_context = eglCreateContext (edpy,
config,
EGL_NO_CONTEXT,
attribs);
#else
/* Seems some GLES implementations 1.x do not like attribs... */
backend_egl->egl_context = eglCreateContext (edpy,
config,
EGL_NO_CONTEXT,
NULL);
#endif
if (backend_egl->egl_context == EGL_NO_CONTEXT)
{
g_warning ("Unable to create a suitable EGL context");
goto fail;
}
backend_egl->egl_config = config;
CLUTTER_NOTE (GL, "Created EGL Context");
}
return TRUE;
fail:
/* NB: We currently only support a single fallback option */
if (retry_cookie == 0)
{
retry_cookie = 1;
goto retry;
}
return FALSE;
}
static void
clutter_backend_egl_ensure_context (ClutterBackend *backend,
ClutterStage *stage)
{
ClutterBackendEGL *backend_egl = CLUTTER_BACKEND_EGL (backend);
ClutterBackendEGL *backend_egl = CLUTTER_BACKEND_EGL (backend);
ClutterStageWindow *impl;
if (stage == NULL)
if (stage == NULL ||
(CLUTTER_PRIVATE_FLAGS (stage) & CLUTTER_ACTOR_IN_DESTRUCTION) ||
((impl = _clutter_stage_get_window (stage)) == NULL))
{
CLUTTER_NOTE (BACKEND, "Clearing EGL context");
eglMakeCurrent (backend_egl->edpy,
@ -73,11 +180,9 @@ clutter_backend_egl_ensure_context (ClutterBackend *backend,
}
else
{
ClutterStageWindow *impl;
ClutterStageEGL *stage_egl;
ClutterStageX11 *stage_x11;
impl = _clutter_stage_get_window (stage);
g_assert (impl != NULL);
CLUTTER_NOTE (MULTISTAGE, "Setting context for stage of type %s [%p]",
@ -87,7 +192,7 @@ clutter_backend_egl_ensure_context (ClutterBackend *backend,
stage_egl = CLUTTER_STAGE_EGL (impl);
stage_x11 = CLUTTER_STAGE_X11 (impl);
if (!backend_egl->egl_context)
if (backend_egl->egl_context == EGL_NO_CONTEXT)
return;
clutter_x11_trap_x_errors ();
@ -107,10 +212,13 @@ clutter_backend_egl_ensure_context (ClutterBackend *backend,
EGL_NO_CONTEXT);
}
else
eglMakeCurrent (backend_egl->edpy,
stage_egl->egl_surface,
stage_egl->egl_surface,
backend_egl->egl_context);
{
CLUTTER_NOTE (MULTISTAGE, "Setting real surface current");
eglMakeCurrent (backend_egl->edpy,
stage_egl->egl_surface,
stage_egl->egl_surface,
backend_egl->egl_context);
}
if (clutter_x11_untrap_x_errors ())
g_critical ("Unable to make the stage window 0x%x the current "
@ -123,9 +231,6 @@ static void
clutter_backend_egl_redraw (ClutterBackend *backend,
ClutterStage *stage)
{
ClutterBackendEGL *backend_egl = CLUTTER_BACKEND_EGL (backend);
ClutterStageEGL *stage_egl;
ClutterStageX11 *stage_x11;
ClutterStageWindow *impl;
impl = _clutter_stage_get_window (stage);
@ -134,26 +239,7 @@ clutter_backend_egl_redraw (ClutterBackend *backend,
g_assert (CLUTTER_IS_STAGE_EGL (impl));
stage_x11 = CLUTTER_STAGE_X11 (impl);
stage_egl = CLUTTER_STAGE_EGL (impl);
/* this will cause the stage implementation to be painted as well */
clutter_actor_paint (CLUTTER_ACTOR (stage));
cogl_flush ();
/* Why this paint is done in backend as likely GL windowing system
* specific calls, like swapping buffers.
*/
if (stage_x11->xwin)
{
/* clutter_feature_wait_for_vblank (); */
eglSwapBuffers (backend_egl->edpy, stage_egl->egl_surface);
}
else
{
eglWaitGL ();
CLUTTER_GLERR ();
}
clutter_stage_egl_redraw (CLUTTER_STAGE_EGL (impl), stage);
}
static void
@ -213,6 +299,10 @@ static ClutterFeatureFlags
clutter_backend_egl_get_features (ClutterBackend *backend)
{
ClutterBackendEGL *backend_egl = CLUTTER_BACKEND_EGL (backend);
ClutterFeatureFlags flags;
flags = clutter_backend_x11_get_features (backend);
flags |= CLUTTER_FEATURE_STAGE_MULTIPLE;
CLUTTER_NOTE (BACKEND, "Checking features\n"
"GL_VENDOR: %s\n"
@ -228,8 +318,7 @@ clutter_backend_egl_get_features (ClutterBackend *backend)
eglQueryString (backend_egl->edpy, EGL_VERSION),
eglQueryString (backend_egl->edpy, EGL_EXTENSIONS));
/* We can actually resize too */
return CLUTTER_FEATURE_STAGE_CURSOR|CLUTTER_FEATURE_STAGE_MULTIPLE;
return flags;
}
static ClutterStageWindow *
@ -244,7 +333,7 @@ clutter_backend_egl_create_stage (ClutterBackend *backend,
CLUTTER_NOTE (BACKEND, "Creating stage of type '%s'",
g_type_name (CLUTTER_STAGE_TYPE));
stage = g_object_new (CLUTTER_STAGE_TYPE, NULL);
stage = g_object_new (CLUTTER_TYPE_STAGE_EGL, NULL);
/* copy backend data into the stage */
stage_x11 = CLUTTER_STAGE_X11 (stage);
@ -267,6 +356,9 @@ clutter_backend_egl_get_visual_info (ClutterBackendX11 *backend_x11)
XVisualInfo *visinfo = None;
int visinfos_count;
if (!clutter_backend_egl_create_context (CLUTTER_BACKEND (backend_x11), NULL))
return NULL;
eglGetConfigAttrib (backend_egl->edpy, backend_egl->egl_config,
EGL_NATIVE_VISUAL_ID, &visualid);
@ -298,17 +390,14 @@ clutter_backend_egl_class_init (ClutterBackendEGLClass *klass)
backend_class->get_features = clutter_backend_egl_get_features;
backend_class->create_stage = clutter_backend_egl_create_stage;
backend_class->ensure_context = clutter_backend_egl_ensure_context;
backend_class->create_context = clutter_backend_egl_create_context;
backendx11_class->get_visual_info = clutter_backend_egl_get_visual_info;
}
static void
clutter_backend_egl_init (ClutterBackendEGL *backend_egl)
{
ClutterBackend *backend = CLUTTER_BACKEND (backend_egl);
clutter_backend_set_resolution (backend, 96.0);
clutter_backend_set_double_click_time (backend, 250);
clutter_backend_set_double_click_distance (backend, 5);
backend_egl->egl_context = EGL_NO_CONTEXT;
}
GType

3
clutter/eglx/clutter-backend-egl.h
View File

@ -51,9 +51,8 @@ struct _ClutterBackendEGL
/* EGL Specific */
EGLDisplay edpy;
EGLSurface egl_surface;
EGLContext egl_context;
EGLConfig egl_config;
EGLConfig egl_config;
gint egl_version_major;
gint egl_version_minor;

290
clutter/eglx/clutter-stage-egl.c
View File

@ -49,7 +49,7 @@ clutter_stage_egl_unrealize (ClutterStageWindow *stage_window)
else
stage_x11->xwin = None;
if (stage_egl->egl_surface)
if (stage_egl->egl_surface != EGL_NO_SURFACE)
{
eglDestroySurface (clutter_eglx_display (), stage_egl->egl_surface);
stage_egl->egl_surface = EGL_NO_SURFACE;
@ -61,50 +61,16 @@ clutter_stage_egl_unrealize (ClutterStageWindow *stage_window)
}
static gboolean
_clutter_stage_egl_try_realize (ClutterStageWindow *stage_window, int *retry_cookie)
clutter_stage_egl_realize (ClutterStageWindow *stage_window)
{
ClutterStageEGL *stage_egl = CLUTTER_STAGE_EGL (stage_window);
ClutterStageX11 *stage_x11 = CLUTTER_STAGE_X11 (stage_window);
ClutterBackend *backend;
ClutterBackendEGL *backend_egl;
ClutterBackendX11 *backend_x11;
EGLConfig config;
EGLint config_count;
EGLBoolean status;
int i;
int num_configs;
EGLConfig *all_configs;
EGLint cfg_attribs[] = {
/* NB: This must be the first attribute, since we may
* try and fallback to no stencil buffer */
EGL_STENCIL_SIZE, 8,
EGLDisplay edpy;
EGL_RED_SIZE, 5,
EGL_GREEN_SIZE, 6,
EGL_BLUE_SIZE, 5,
EGL_BUFFER_SIZE, EGL_DONT_CARE,
#ifdef HAVE_COGL_GLES2
EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT,
#else /* HAVE_COGL_GLES2 */
EGL_SURFACE_TYPE, EGL_WINDOW_BIT,
#endif /* HAVE_COGL_GLES2 */
EGL_NONE
};
EGLDisplay edpy;
/* Here we can change the attributes depending on the fallback count... */
/* Some GLES hardware can't support a stencil buffer: */
if (*retry_cookie == 1)
{
g_warning ("Trying with stencil buffer disabled...");
cfg_attribs[1 /* EGL_STENCIL_SIZE */] = 0;
}
/* XXX: at this point we only have one fallback */
CLUTTER_NOTE (BACKEND, "Realizing main stage");
backend = clutter_get_default_backend ();
backend_egl = CLUTTER_BACKEND_EGL (backend);
@ -112,59 +78,74 @@ _clutter_stage_egl_try_realize (ClutterStageWindow *stage_window, int *retry_coo
edpy = clutter_eglx_display ();
eglGetConfigs (edpy, NULL, 0, &num_configs);
all_configs = g_malloc (num_configs * sizeof (EGLConfig));
eglGetConfigs (clutter_eglx_display (),
all_configs,
num_configs,
&num_configs);
for (i = 0; i < num_configs; ++i)
{
EGLint red = -1, green = -1, blue = -1, alpha = -1, stencil = -1;
eglGetConfigAttrib (edpy,
all_configs[i],
EGL_RED_SIZE, &red);
eglGetConfigAttrib (edpy,
all_configs[i],
EGL_GREEN_SIZE, &green);
eglGetConfigAttrib (edpy,
all_configs[i],
EGL_BLUE_SIZE, &blue);
eglGetConfigAttrib (edpy,
all_configs[i],
EGL_ALPHA_SIZE, &alpha);
eglGetConfigAttrib (edpy,
all_configs[i],
EGL_STENCIL_SIZE, &stencil);
CLUTTER_NOTE (BACKEND, "EGLConfig == R:%d G:%d B:%d A:%d S:%d \n",
red, green, blue, alpha, stencil);
}
g_free (all_configs);
status = eglChooseConfig (edpy,
cfg_attribs,
&config, 1,
&config_count);
if (status != EGL_TRUE)
{
g_warning ("eglChooseConfig failed");
goto fail;
}
if (stage_x11->xwin == None)
stage_x11->xwin =
XCreateSimpleWindow (backend_x11->xdpy,
backend_x11->xwin_root,
0, 0,
stage_x11->xwin_width,
stage_x11->xwin_height,
0, 0,
WhitePixel (backend_x11->xdpy,
backend_x11->xscreen_num));
{
XSetWindowAttributes xattr;
unsigned long mask;
XVisualInfo *xvisinfo;
gfloat width, height;
CLUTTER_NOTE (MISC, "Creating stage X window");
xvisinfo = clutter_backend_x11_get_visual_info (backend_x11);
if (xvisinfo == NULL)
{
g_critical ("Unable to find suitable GL visual.");
return FALSE;
}
/* window attributes */
xattr.background_pixel = WhitePixel (backend_x11->xdpy,
backend_x11->xscreen_num);
xattr.border_pixel = 0;
xattr.colormap = XCreateColormap (backend_x11->xdpy,
backend_x11->xwin_root,
xvisinfo->visual,
AllocNone);
mask = CWBorderPixel | CWColormap;
/* Call get_size - this will either get the geometry size (which
* before we create the window is set to 640x480), or if a size
* is set, it will get that. This lets you set a size on the
* stage before it's realized.
*/
clutter_actor_get_size (CLUTTER_ACTOR (stage_x11->wrapper),
&width,
&height);
stage_x11->xwin_width = (gint)width;
stage_x11->xwin_height = (gint)height;
stage_x11->xwin = XCreateWindow (backend_x11->xdpy,
backend_x11->xwin_root,
0, 0,
stage_x11->xwin_width,
stage_x11->xwin_height,
0,
xvisinfo->depth,
InputOutput,
xvisinfo->visual,
mask, &xattr);
CLUTTER_NOTE (BACKEND, "Stage [%p], window: 0x%x, size: %dx%d",
stage_window,
(unsigned int) stage_x11->xwin,
stage_x11->xwin_width,
stage_x11->xwin_height);
XFree (xvisinfo);
}
if (stage_egl->egl_surface == EGL_NO_SURFACE)
{
stage_egl->egl_surface =
eglCreateWindowSurface (edpy,
backend_egl->egl_config,
(EGLNativeWindowType) stage_x11->xwin,
NULL);
}
if (stage_egl->egl_surface == EGL_NO_SURFACE)
g_warning ("Unable to create an EGL surface");
if (clutter_x11_has_event_retrieval ())
{
@ -192,107 +173,13 @@ _clutter_stage_egl_try_realize (ClutterStageWindow *stage_window, int *retry_coo
PropertyChangeMask);
}
clutter_stage_x11_fix_window_size (stage_x11, -1, -1);
/* no user resize... */
clutter_stage_x11_fix_window_size (stage_x11,
stage_x11->xwin_width,
stage_x11->xwin_height);
clutter_stage_x11_set_wm_protocols (stage_x11);
if (stage_egl->egl_surface != EGL_NO_SURFACE)
{
eglDestroySurface (edpy, stage_egl->egl_surface);
stage_egl->egl_surface = EGL_NO_SURFACE;
}
stage_egl->egl_surface =
eglCreateWindowSurface (edpy,
config,
(NativeWindowType) stage_x11->xwin,
NULL);
if (stage_egl->egl_surface == EGL_NO_SURFACE)
{
g_warning ("Unable to create an EGL surface");
goto fail;
}
if (G_UNLIKELY (backend_egl->egl_context == None))
{
#ifdef HAVE_COGL_GLES2
static const EGLint attribs[3]
= { EGL_CONTEXT_CLIENT_VERSION, 2, EGL_NONE };
backend_egl->egl_context = eglCreateContext (edpy,
config,
EGL_NO_CONTEXT,
attribs);
#else
/* Seems some GLES implementations 1.x do not like attribs... */
backend_egl->egl_context = eglCreateContext (edpy,
config,
EGL_NO_CONTEXT,
NULL);
#endif
if (backend_egl->egl_context == EGL_NO_CONTEXT)
{
g_warning ("Unable to create a suitable EGL context");
goto fail;
}
backend_egl->egl_config = config;
CLUTTER_NOTE (GL, "Created EGL Context");
}
*retry_cookie = 0;
return TRUE;
fail:
if (stage_egl->egl_surface != EGL_NO_SURFACE)
{
eglDestroySurface (backend_egl->edpy, stage_egl->egl_surface);
stage_egl->egl_surface = EGL_NO_SURFACE;
}
if (stage_x11->xwin != None)
{
XDestroyWindow (backend_x11->xdpy, stage_x11->xwin);
stage_x11->xwin = None;
}
/* NB: We currently only support a single fallback option */
if (*retry_cookie == 0)
*retry_cookie = 1; /* tell the caller to try again */
else
*retry_cookie = 0; /* tell caller not to try again! */
return FALSE;
}
static gboolean
clutter_stage_egl_realize (ClutterStageWindow *stage_window)
{
int retry_cookie = 0;
CLUTTER_NOTE (BACKEND, "Realizing main stage");
while (1)
{
/* _clutter_stage_egl_try_realize supports fallbacks, and the number of
* fallbacks already tried is tracked in the retry_cookie, so what we are
* doing here is re-trying until we get told there are no more fallback
* options... */
if (_clutter_stage_egl_try_realize (stage_window, &retry_cookie))
{
gboolean ret = clutter_stage_egl_parent_iface->realize (stage_window);
if (G_LIKELY (ret))
CLUTTER_NOTE (BACKEND, "Successfully realized stage");
return ret;
}
if (retry_cookie == 0)
return FALSE; /* we've been told not to try again! */
g_warning ("%s: Trying fallback", G_STRFUNC);
}
g_return_val_if_reached (FALSE);
return clutter_stage_egl_parent_iface->realize (stage_window);
}
static void
@ -323,4 +210,29 @@ clutter_stage_egl_class_init (ClutterStageEGLClass *klass)
static void
clutter_stage_egl_init (ClutterStageEGL *stage)
{
stage->egl_surface = EGL_NO_SURFACE;
}
void
clutter_stage_egl_redraw (ClutterStageEGL *stage_egl,
ClutterStage *stage)
{
ClutterBackend *backend = clutter_get_default_backend ();
ClutterBackendEGL *backend_egl = CLUTTER_BACKEND_EGL (backend);
ClutterStageX11 *stage_x11 = CLUTTER_STAGE_X11 (stage_egl);
ClutterStageWindow *impl;
impl = _clutter_stage_get_window (stage);
if (impl == NULL)
return;
g_assert (CLUTTER_IS_STAGE_EGL (impl));
stage_egl = CLUTTER_STAGE_EGL (impl);
eglWaitNative (EGL_CORE_NATIVE_ENGINE);
clutter_actor_paint (CLUTTER_ACTOR (stage_x11->wrapper));
cogl_flush ();
eglWaitGL ();
eglSwapBuffers (backend_egl->edpy, stage_egl->egl_surface);
}

3
clutter/eglx/clutter-stage-egl.h
View File

@ -36,4 +36,7 @@ struct _ClutterStageEGLClass
GType clutter_stage_egl_get_type (void) G_GNUC_CONST;
void clutter_stage_egl_redraw (ClutterStageEGL *stage_egl,
ClutterStage *stage);
#endif /* __CLUTTER_STAGE_EGL_H__ */