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b3a105c576
This adds API to let you override the choice of Cogl's winsys backend. Previously it was only possible to override the winsys using the COGL_RENDERER environment variable, but it's useful for something like Clutter to be able to control the winsys via API without needing environment variable tricks. This also adds API to query back the winsys chosen by Cogl, in case you don't set an explicit override. Signed-off-by: Neil Roberts <neil@linux.intel.com>
248 lines
7.8 KiB
C
248 lines
7.8 KiB
C
/*
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* Cogl
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*
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* An object oriented GL/GLES Abstraction/Utility Layer
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*
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* Copyright (C) 2007,2008,2009 Intel Corporation.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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* Boston, MA 02111-1307, USA.
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*/
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#if !defined(__COGL_H_INSIDE__) && !defined(CLUTTER_COMPILATION)
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#error "Only <cogl/cogl.h> can be included directly."
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#endif
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#ifndef __COGL_RENDERER_H__
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#define __COGL_RENDERER_H__
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#include <glib.h>
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#include <cogl/cogl-types.h>
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#include <cogl/cogl-onscreen-template.h>
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#ifdef COGL_HAS_XLIB
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#include <X11/Xlib.h>
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#endif
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#if COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT
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#include <wayland-client.h>
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#endif
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G_BEGIN_DECLS
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/**
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* SECTION:cogl-renderer
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* @short_description:
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*
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*/
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#define cogl_renderer_error_quark cogl_renderer_error_quark_EXP
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#define COGL_RENDERER_ERROR cogl_renderer_error_quark ()
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GQuark
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cogl_renderer_error_quark (void);
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typedef struct _CoglRenderer CoglRenderer;
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#define cogl_is_renderer cogl_is_renderer_EXP
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gboolean
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cogl_is_renderer (void *object);
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#define cogl_renderer_new cogl_renderer_new_EXP
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CoglRenderer *
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cogl_renderer_new (void);
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/* optional configuration APIs */
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/**
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* CoglWinsysID:
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* @COGL_WINSYS_ID_ANY: Implies no preference for which backend is used
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* @COGL_WINSYS_ID_STUB: Use the no-op stub backend
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* @COGL_WINSYS_ID_GLX: Use the GLX window system binding API
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* @COGL_WINSYS_ID_EGL: Use the Khronos EGL window system binding API
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* @COGL_WINSYS_ID_WGL: Use the Microsoft Windows WGL binding API
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*
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* Identifies specific window system backends that Cogl supports.
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*
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* These can be used to query what backend Cogl is using or to try and
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* explicitly select a backend to use.
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*/
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typedef enum
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{
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COGL_WINSYS_ID_ANY,
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COGL_WINSYS_ID_STUB,
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COGL_WINSYS_ID_GLX,
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COGL_WINSYS_ID_EGL,
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COGL_WINSYS_ID_WGL
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} CoglWinsysID;
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/**
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* cogl_renderer_set_winsys_id:
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* @renderer: A #CoglRenderer
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* @winsys_id: An ID of the winsys you explicitly want to use.
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*
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* This allows you to explicitly select a winsys backend to use instead
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* of letting Cogl automatically select a backend.
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*
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* if you select an unsupported backend then cogl_renderer_connect()
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* will fail and report an error.
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*
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* This may only be called on an un-connected #CoglRenderer.
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*/
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#define cogl_renderer_set_winsys_id cogl_renderer_set_winsys_id_EXP
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void
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cogl_renderer_set_winsys_id (CoglRenderer *renderer,
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CoglWinsysID winsys_id);
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/**
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* cogl_renderer_get_winsys_id:
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* @renderer: A #CoglRenderer
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*
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* Queries which window system backend Cogl has chosen to use.
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*
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* This may only be called on a connected #CoglRenderer.
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*
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* Returns: The #CoglWinsysID corresponding to the chosen window
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* system backend.
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*/
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#define cogl_renderer_get_winsys_id cogl_renderer_get_winsys_id_EXP
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CoglWinsysID
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cogl_renderer_get_winsys_id (CoglRenderer *renderer);
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#define cogl_renderer_handle_native_event cogl_renderer_handle_native_event_EXP
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/*
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* cogl_renderer_handle_native_event:
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* @event: pointer to native event structure
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*
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* This function processes a single event; it can be used to hook into
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* external event retrieval (for example that done by Clutter or
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* GDK). The type of the structure that event points to depends on the
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* window system used for the renderer. On an xlib renderer it would
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* be a pointer to an XEvent or an a Windows renderer it would be a
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* pointer to a MSG struct.
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*
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* Return value: #CoglFilterReturn. %COGL_FILTER_REMOVE indicates that
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* Cogl has internally handled the event and the caller should do no
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* further processing. %COGL_FILTER_CONTINUE indicates that Cogl is
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* either not interested in the event, or has used the event to update
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* internal state without taking any exclusive action.
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*/
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CoglFilterReturn
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cogl_renderer_handle_native_event (CoglRenderer *renderer,
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void *event);
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#define cogl_renderer_add_native_filter cogl_renderer_add_native_filter_EXP
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/*
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* cogl_renderer_add_native_filter:
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*
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* Adds a callback function that will receive all native events. The
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* function can stop further processing of the event by return
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* %COGL_FILTER_REMOVE. What is considered a native event depends on
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* the type of renderer used. An xlib based renderer would pass all
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* XEvents whereas a Windows based renderer would pass MSGs.
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*/
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void
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cogl_renderer_add_native_filter (CoglRenderer *renderer,
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CoglNativeFilterFunc func,
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void *data);
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#define cogl_renderer_remove_native_filter \
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cogl_renderer_remove_native_filter_EXP
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/*
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* cogl_renderer_remove_native_filter:
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*
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* Removes a callback that was previously added with
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* cogl_renderer_add_native_filter().
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*/
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void
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cogl_renderer_remove_native_filter (CoglRenderer *renderer,
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CoglNativeFilterFunc func,
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void *data);
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#ifdef COGL_HAS_XLIB
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#define cogl_renderer_xlib_get_foreign_display \
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cogl_renderer_xlib_get_foreign_display_EXP
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/*
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* cogl_renderer_xlib_get_foreign_display:
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*
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* Return value: the foreign Xlib display that will be used by any Xlib based
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* winsys backend. The display needs to be set with
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* cogl_renderer_xlib_set_foreign_display() before this function is called.
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*/
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Display *
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cogl_renderer_xlib_get_foreign_display (CoglRenderer *renderer);
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#define cogl_renderer_xlib_set_foreign_display \
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cogl_renderer_xlib_set_foreign_display_EXP
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/*
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* cogl_renderer_xlib_set_foreign_display:
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*
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* Sets a foreign Xlib display that Cogl will use for and Xlib based winsys
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* backend.
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*/
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void
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cogl_renderer_xlib_set_foreign_display (CoglRenderer *renderer,
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Display *display);
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#define cogl_renderer_xlib_get_display cogl_renderer_xlib_get_display_EXP
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Display *
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cogl_renderer_xlib_get_display (CoglRenderer *renderer);
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#endif /* COGL_HAS_XLIB */
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#if COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT
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#define cogl_renderer_wayland_set_foreign_display \
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cogl_renderer_wayland_set_foreign_display_EXP
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void
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cogl_renderer_wayland_set_foreign_display (CoglRenderer *renderer,
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struct wl_display *display);
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#define cogl_renderer_wayland_get_display \
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cogl_renderer_wayland_get_display_EXP
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struct wl_display *
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cogl_renderer_wayland_get_display (CoglRenderer *renderer);
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#define cogl_renderer_wayland_set_foreign_compositor \
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cogl_renderer_wayland_set_foreign_compositor_EXP
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void
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cogl_renderer_wayland_set_foreign_compositor (CoglRenderer *renderer,
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struct wl_compositor *compositor);
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#define cogl_renderer_wayland_get_compositor \
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cogl_renderer_wayland_get_compositor_EXP
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struct wl_compositor *
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cogl_renderer_wayland_get_compositor (CoglRenderer *renderer);
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#endif /* COGL_HAS_EGL_PLATFORM_WAYLAND_SUPPORT */
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#define cogl_renderer_check_onscreen_template \
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cogl_renderer_check_onscreen_template_EXP
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gboolean
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cogl_renderer_check_onscreen_template (CoglRenderer *renderer,
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CoglOnscreenTemplate *onscreen_template,
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GError **error);
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/* Final connection API */
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#define cogl_renderer_connect cogl_renderer_connect_EXP
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gboolean
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cogl_renderer_connect (CoglRenderer *renderer, GError **error);
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G_END_DECLS
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#endif /* __COGL_RENDERER_H__ */
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