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b2e735ff7f
The GL or GLES library is now dynamically loaded by the CoglRenderer so that it can choose between GL, GLES1 and GLES2 at runtime. The library is loaded by the renderer because it needs to be done before calling eglInitialize. There is a new environment variable called COGL_DRIVER to choose between gl, gles1 or gles2. The #ifdefs for HAVE_COGL_GL, HAVE_COGL_GLES and HAVE_COGL_GLES2 have been changed so that they don't assume the ifdefs are mutually exclusive. They haven't been removed entirely so that it's possible to compile the GLES backends without the the enums from the GL headers. When using GLX the winsys additionally dynamically loads libGL because that also contains the GLX API. It can't be linked in directly because that would probably conflict with the GLES API if the EGL is selected. When compiling with EGL support the library links directly to libEGL because it doesn't contain any GL API so it shouldn't have any conflicts. When building for WGL or OSX Cogl still directly links against the GL API so there is a #define in config.h so that Cogl won't try to dlopen the library. Cogl-pango previously had a #ifdef to detect when the GL backend is used so that it can sneakily pass GL_QUADS to cogl_vertex_buffer_draw. This is now changed so that it queries the CoglContext for the backend. However to get this to work Cogl now needs to export the _cogl_context_get_default symbol and cogl-pango needs some extra -I flags to so that it can include cogl-context-private.h
148 lines
3.5 KiB
C
148 lines
3.5 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, 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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* Authors:
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* Robert Bragg <robert@linux.intel.com>
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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 <string.h>
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#include "cogl.h"
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#include "cogl-private.h"
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#include "cogl-object.h"
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#include "cogl-internal.h"
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#include "cogl-display-private.h"
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#include "cogl-renderer-private.h"
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#include "cogl-winsys-private.h"
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static void _cogl_display_free (CoglDisplay *display);
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COGL_OBJECT_DEFINE (Display, display);
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GQuark
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cogl_display_error_quark (void)
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{
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return g_quark_from_static_string ("cogl-display-error-quark");
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}
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static void
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_cogl_display_free (CoglDisplay *display)
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{
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if (display->renderer)
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{
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cogl_object_unref (display->renderer);
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display->renderer = NULL;
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}
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if (display->onscreen_template)
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{
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cogl_object_unref (display->onscreen_template);
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display->onscreen_template = NULL;
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}
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g_slice_free (CoglDisplay, display);
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}
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CoglDisplay *
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cogl_display_new (CoglRenderer *renderer,
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CoglOnscreenTemplate *onscreen_template)
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{
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CoglDisplay *display = g_slice_new0 (CoglDisplay);
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GError *error = NULL;
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_cogl_init ();
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display->renderer = renderer;
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if (renderer)
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cogl_object_ref (renderer);
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else
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display->renderer = cogl_renderer_new ();
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if (!cogl_renderer_connect (display->renderer, &error))
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{
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g_warning ("Failed to connect renderer: %s\n", error->message);
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g_error_free (error);
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g_object_unref (display->renderer);
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g_slice_free (CoglDisplay, display);
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return NULL;
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}
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display->onscreen_template = onscreen_template;
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if (onscreen_template)
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cogl_object_ref (onscreen_template);
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display->setup = FALSE;
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return _cogl_display_object_new (display);
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}
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static const CoglWinsysVtable *
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_cogl_display_get_winsys (CoglDisplay *display)
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{
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return display->renderer->winsys_vtable;
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}
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gboolean
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cogl_display_setup (CoglDisplay *display,
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GError **error)
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{
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const CoglWinsysVtable *winsys;
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if (display->setup)
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return TRUE;
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winsys = _cogl_display_get_winsys (display);
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if (!winsys->display_setup (display, error))
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return FALSE;
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display->setup = TRUE;
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return TRUE;
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}
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#ifdef COGL_HAS_EGL_PLATFORM_GDL_SUPPORT
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void
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cogl_gdl_display_set_plane (CoglDisplay *display,
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struct gdl_plane *plane)
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{
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g_return_if_fail (display->setup == FALSE);
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display->gdl_plane = plane;
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}
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#endif
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#ifdef COGL_HAS_WAYLAND_EGL_SERVER_SUPPORT
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void
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cogl_wayland_display_set_compositor_display (CoglDisplay *display,
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struct wl_display *wayland_display)
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{
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g_return_if_fail (display->setup == FALSE);
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display->wayland_compositor_display = wayland_display;
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}
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#endif
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