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>
161 lines
3.8 KiB
C
161 lines
3.8 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) 2011 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, see
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* <http://www.gnu.org/licenses/>.
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*
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*
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* Authors:
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* Robert Bragg <robert@linux.intel.com>
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*
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include "cogl-renderer-private.h"
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#include "cogl-display-private.h"
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#include "cogl-context-private.h"
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#include "cogl-framebuffer-private.h"
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#include "cogl-private.h"
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#include <string.h>
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static int _cogl_winsys_stub_dummy_ptr;
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/* This provides a NOP winsys. This can be useful for debugging or for
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* integrating with toolkits that already have window system
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* integration code.
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*/
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static CoglFuncPtr
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_cogl_winsys_get_proc_address (const char *name)
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{
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return NULL;
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}
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static void
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_cogl_winsys_renderer_disconnect (CoglRenderer *renderer)
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{
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renderer->winsys = NULL;
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}
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static gboolean
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_cogl_winsys_renderer_connect (CoglRenderer *renderer,
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GError **error)
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{
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renderer->winsys = &_cogl_winsys_stub_dummy_ptr;
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return TRUE;
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}
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static void
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_cogl_winsys_display_destroy (CoglDisplay *display)
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{
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display->winsys = NULL;
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}
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static gboolean
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_cogl_winsys_display_setup (CoglDisplay *display,
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GError **error)
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{
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display->winsys = &_cogl_winsys_stub_dummy_ptr;
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return TRUE;
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}
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static gboolean
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_cogl_winsys_context_init (CoglContext *context, GError **error)
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{
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context->winsys = &_cogl_winsys_stub_dummy_ptr;
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if (!_cogl_gl_check_version (error))
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return FALSE;
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_cogl_gl_update_features (context);
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memset (context->winsys_features, 0, sizeof (context->winsys_features));
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return TRUE;
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}
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static void
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_cogl_winsys_context_deinit (CoglContext *context)
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{
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context->winsys = NULL;
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}
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static gboolean
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_cogl_winsys_onscreen_init (CoglOnscreen *onscreen,
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GError **error)
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{
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return TRUE;
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}
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static void
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_cogl_winsys_onscreen_deinit (CoglOnscreen *onscreen)
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{
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}
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static void
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_cogl_winsys_onscreen_bind (CoglOnscreen *onscreen)
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{
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}
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static void
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_cogl_winsys_onscreen_swap_buffers (CoglOnscreen *onscreen)
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{
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}
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static void
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_cogl_winsys_onscreen_update_swap_throttled (CoglOnscreen *onscreen)
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{
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}
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static void
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_cogl_winsys_onscreen_set_visibility (CoglOnscreen *onscreen,
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gboolean visibility)
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{
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}
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static CoglWinsysVtable _cogl_winsys_vtable =
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{
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.id = COGL_WINSYS_ID_STUB,
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.name = "STUB",
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.get_proc_address = _cogl_winsys_get_proc_address,
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.renderer_connect = _cogl_winsys_renderer_connect,
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.renderer_disconnect = _cogl_winsys_renderer_disconnect,
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.display_setup = _cogl_winsys_display_setup,
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.display_destroy = _cogl_winsys_display_destroy,
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.context_init = _cogl_winsys_context_init,
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.context_deinit = _cogl_winsys_context_deinit,
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.onscreen_init = _cogl_winsys_onscreen_init,
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.onscreen_deinit = _cogl_winsys_onscreen_deinit,
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.onscreen_bind = _cogl_winsys_onscreen_bind,
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.onscreen_swap_buffers = _cogl_winsys_onscreen_swap_buffers,
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.onscreen_update_swap_throttled =
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_cogl_winsys_onscreen_update_swap_throttled,
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.onscreen_set_visibility = _cogl_winsys_onscreen_set_visibility,
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};
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const CoglWinsysVtable *
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_cogl_winsys_stub_get_vtable (void)
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{
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return &_cogl_winsys_vtable;
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}
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