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wayland: don't require the surfaceless extensions

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Just create a one-pixel dummy surface for eglMakeCurrent().
This commit is contained in:
nobled 2011-01-30 22:43:50 +00:00
parent ffd7197dd6
commit 7e4a8fd907
2 changed files with 49 additions and 14 deletions
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62
clutter/wayland/clutter-backend-wayland.c
View File

@ -275,6 +275,31 @@ clutter_backend_wayland_post_parse (ClutterBackend *backend,
return TRUE;
}
static gboolean
make_dummy_surface (ClutterBackendWayland *backend_wayland)
{
static const EGLint attrs[] = {
EGL_WIDTH, 1,
EGL_HEIGHT, 1,
EGL_NONE };
EGLint num_configs;
eglGetConfigs(backend_wayland->edpy,
&backend_wayland->egl_config, 1, &num_configs);
if (num_configs < 1)
return FALSE;
backend_wayland->egl_surface =
eglCreatePbufferSurface(backend_wayland->edpy,
backend_wayland->egl_config,
attrs);
if (backend_wayland->egl_surface == EGL_NO_SURFACE)
return FALSE;
return TRUE;
}
#if defined(HAVE_COGL_GLES2)
#define _COGL_GLES_VERSION 2
#elif defined(HAVE_COGL_GLES)
@ -289,11 +314,6 @@ try_create_context (ClutterBackend *backend,
{
ClutterBackendWayland *backend_wayland = CLUTTER_BACKEND_WAYLAND (backend);
const char *error_message;
#if defined(HAVE_COGL_GL)
eglBindAPI (EGL_OPENGL_API);
#else
eglBindAPI (EGL_OPENGL_ES_API);
#endif
if (backend_wayland->egl_context == EGL_NO_CONTEXT)
{
@ -306,7 +326,7 @@ try_create_context (ClutterBackend *backend,
backend_wayland->egl_context =
eglCreateContext (backend_wayland->edpy,
NULL,
backend_wayland->egl_config,
EGL_NO_CONTEXT,
attribs);
if (backend_wayland->egl_context == EGL_NO_CONTEXT)
@ -319,13 +339,13 @@ try_create_context (ClutterBackend *backend,
}
if (!eglMakeCurrent (backend_wayland->edpy,
EGL_NO_SURFACE,
EGL_NO_SURFACE,
backend_wayland->egl_surface,
backend_wayland->egl_surface,
backend_wayland->egl_context))
{
g_set_error (error, CLUTTER_INIT_ERROR,
CLUTTER_INIT_ERROR_BACKEND,
"Unable to MakeCurrent with NULL drawables");
"Unable to MakeCurrent");
return FALSE;
}
@ -363,15 +383,29 @@ clutter_backend_wayland_create_context (ClutterBackend *backend,
if (backend_wayland->egl_context != EGL_NO_CONTEXT)
return TRUE;
#if defined(HAVE_COGL_GL)
eglBindAPI (EGL_OPENGL_API);
#else
eglBindAPI (EGL_OPENGL_ES_API);
#endif
egl_extensions = eglQueryString (backend_wayland->edpy, EGL_EXTENSIONS);
if (!_cogl_check_extension (_COGL_SURFACELESS_EXTENSION, egl_extensions))
{
g_set_error (error, CLUTTER_INIT_ERROR,
CLUTTER_INIT_ERROR_BACKEND,
"Wayland clients require the "
_COGL_SURFACELESS_EXTENSION " extension");
return FALSE;
g_debug("Could not find the " _COGL_SURFACELESS_EXTENSION
" extension; falling back to binding a dummy surface");
if (!make_dummy_surface(backend_wayland))
{
g_set_error (error, CLUTTER_INIT_ERROR,
CLUTTER_INIT_ERROR_BACKEND,
"Could not create dummy surface");
return FALSE;
}
}
else
{
backend_wayland->egl_config = NULL;
backend_wayland->egl_surface = EGL_NO_SURFACE;
}
retry_cookie = 0;

1
clutter/wayland/clutter-backend-wayland.h
View File

@ -57,6 +57,7 @@ struct _ClutterBackendWayland
EGLDisplay edpy;
EGLContext egl_context;
EGLConfig egl_config;
EGLSurface egl_surface;
gint egl_version_major;
gint egl_version_minor;