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display: add _set_onscreen_template() api

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Currently it's only possible to set an onscreen template on a
CoglDisplay by passing a template to cogl_display_new(). For
applications that want to deal with fallbacks then they may want to
replace the onscreen template so this adds a
cogl_display_set_onscreen_template() function.

Reviewed-by: Neil Roberts <neil@linux.intel.com>

(cherry picked from commit f307c9545791dae5472a9568fef6b31b3bf52854)
This commit is contained in:
Robert Bragg 2013-03-01 14:50:43 +00:00
parent 1c91bd4a05
commit 627e518da0
2 changed files with 47 additions and 8 deletions
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32
cogl/cogl-display.c
View File

@ -95,19 +95,17 @@ cogl_display_new (CoglRenderer *renderer,
if (!cogl_renderer_connect (display->renderer, &error))
g_error ("Failed to connect to renderer: %s\n", error->message);
display->onscreen_template = onscreen_template;
if (onscreen_template)
cogl_object_ref (onscreen_template);
else
display->onscreen_template = cogl_onscreen_template_new (NULL);
display->setup = FALSE;
#ifdef COGL_HAS_EGL_PLATFORM_GDL_SUPPORT
display->gdl_plane = GDL_PLANE_ID_UPP_C;
#endif
return _cogl_display_object_new (display);
display = _cogl_display_object_new (display);
cogl_display_set_onscreen_template (display, onscreen_template);
return display;
}
CoglRenderer *
@ -116,6 +114,26 @@ cogl_display_get_renderer (CoglDisplay *display)
return display->renderer;
}
void
cogl_display_set_onscreen_template (CoglDisplay *display,
CoglOnscreenTemplate *onscreen_template)
{
_COGL_RETURN_IF_FAIL (display->setup == FALSE);
if (onscreen_template)
cogl_object_ref (onscreen_template);
if (display->onscreen_template)
cogl_object_unref (display->onscreen_template);
display->onscreen_template = onscreen_template;
/* NB: we want to maintain the invariable that there is always an
* onscreen template associated with a CoglDisplay... */
if (!onscreen_template)
display->onscreen_template = cogl_onscreen_template_new (NULL);
}
CoglBool
cogl_display_setup (CoglDisplay *display,
CoglError **error)

23
cogl/cogl-display.h
View File

@ -85,7 +85,8 @@ typedef struct _CoglDisplay CoglDisplay;
*
* A common use for explicitly allocating a display object is to
* define a template for allocating onscreen framebuffers which is
* what the @onscreen_template argument is for.
* what the @onscreen_template argument is for, or alternatively
* you can use cogl_display_set_onscreen_template().
*
* When a display is first allocated via cogl_display_new() it is in a
* mutable configuration mode. It's designed this way so we can
@ -121,6 +122,26 @@ cogl_display_new (CoglRenderer *renderer,
CoglRenderer *
cogl_display_get_renderer (CoglDisplay *display);
/**
* cogl_display_set_onscreen_template:
* @display: a #CoglDisplay
* @onscreen_template: A template for creating #CoglOnscreen framebuffers
*
* Specifies a template for creating #CoglOnscreen framebuffers.
*
* Depending on the system, the constraints for creating #CoglOnscreen
* framebuffers need to be known before setting up a #CoglDisplay because the
* final setup of the display may constrain how onscreen framebuffers may be
* allocated. If Cogl knows how an application wants to allocate onscreen
* framebuffers then it can try to make sure to setup the display accordingly.
*
* Since: 1.16
* Stability: unstable
*/
void
cogl_display_set_onscreen_template (CoglDisplay *display,
CoglOnscreenTemplate *onscreen_template);
/**
* cogl_display_setup:
* @display: a #CoglDisplay