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display: Get carried away by extension checker

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I wanted to make it easy to check for multiple extensions and then got
carried away by trying to generate beautiful error messages.
This commit is contained in:
Benjamin Otte 2021-10-03 17:40:09 +02:00
parent c8204a902c
commit aba37c40d3
1 changed files with 50 additions and 4 deletions
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54
gdk/gdkdisplay.c
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@ -1570,6 +1570,50 @@ gdk_display_create_egl_config (GdkDisplay *self,
#undef MAX_EGL_ATTRS
static gboolean
gdk_display_check_egl_extensions (EGLDisplay egl_display,
const char **extensions,
GError **error)
{
GString *missing = NULL;
gsize i, n_missing;
n_missing = 0;
for (i = 0; extensions[i] != NULL; i++)
{
if (!epoxy_has_egl_extension (egl_display, extensions[i]))
{
if (missing == NULL)
{
missing = g_string_new (extensions[i]);
}
else
{
g_string_append (missing, ", ");
g_string_append (missing, extensions[i]);
}
n_missing++;
}
}
if (n_missing)
{
g_set_error (error, GDK_GL_ERROR, GDK_GL_ERROR_UNSUPPORTED_PROFILE,
/* translators: Arguments are the number of missing extensions
* followed by a comma-separated list of their names */
g_dngettext (GETTEXT_PACKAGE,
"EGL implementation is missing extension %2$s",
"EGL implementation is missing %d extensions: %s",
n_missing),
(int) n_missing, missing->str);
g_string_free (missing, TRUE);
return FALSE;
}
return TRUE;
}
gboolean
gdk_display_init_egl (GdkDisplay *self,
@ -1629,12 +1673,14 @@ gdk_display_init_egl (GdkDisplay *self,
return FALSE;
}
if (!epoxy_has_egl_extension (priv->egl_display, "EGL_KHR_surfaceless_context"))
if (!gdk_display_check_egl_extensions (priv->egl_display,
(const char *[]) {
"EGL_KHR_surfaceless_context",
NULL
},
error))
{
g_clear_pointer (&priv->egl_display, eglTerminate);
g_set_error_literal (error, GDK_GL_ERROR,
GDK_GL_ERROR_UNSUPPORTED_PROFILE,
_("Surfaceless contexts are not supported on this EGL implementation"));
return FALSE;
}