Panda3D
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config_wgldisplay.cxx
00001 // Filename: config_wgldisplay.cxx
00002 // Created by:  drose (20Dec02)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #include "config_wgldisplay.h"
00016 #include "wglGraphicsBuffer.h"
00017 #include "wglGraphicsPipe.h"
00018 #include "wglGraphicsStateGuardian.h"
00019 #include "wglGraphicsWindow.h"
00020 #include "graphicsPipeSelection.h"
00021 #include "dconfig.h"
00022 #include "pandaSystem.h"
00023 
00024 Configure(config_wgldisplay);
00025 NotifyCategoryDef(wgldisplay, "display");
00026 
00027 ConfigureFn(config_wgldisplay) {
00028   init_libwgldisplay();
00029 }
00030 
00031 ConfigVariableInt gl_force_pixfmt
00032 ("gl-force-pixfmt", 0);
00033 
00034 ConfigVariableBool gl_force_invalid
00035 ("gl-force-invalid", false,
00036  PRC_DESC("Set this true to force all GL windows to fail to open "
00037           "correctly (for debugging)."));
00038 
00039 ConfigVariableBool gl_do_vidmemsize_check
00040 ("gl-do-vidmemsize-check", true,
00041  PRC_DESC("This is true to insist that low-memory cards open only 640x480 "
00042           "fullscreen windows, no matter what resolution of window was "
00043           "requested.  It only affects fullscreen windows."));
00044 
00045 ConfigVariableBool gl_support_fbo
00046   ("gl-support-fbo", true,
00047    PRC_DESC("Configure this false if your GL's implementation of "
00048             "EXT_framebuffer_object is broken.  The system might still be "
00049             "able to create buffers using pbuffers or the like."));
00050 
00051 
00052 ////////////////////////////////////////////////////////////////////
00053 //     Function: init_libwgldisplay
00054 //  Description: Initializes the library.  This must be called at
00055 //               least once before any of the functions or classes in
00056 //               this library can be used.  Normally it will be
00057 //               called by the static initializers and need not be
00058 //               called explicitly, but special cases exist.
00059 ////////////////////////////////////////////////////////////////////
00060 void
00061 init_libwgldisplay() {
00062   static bool initialized = false;
00063   if (initialized) {
00064     return;
00065   }
00066   initialized = true;
00067 
00068   wglGraphicsBuffer::init_type();
00069   wglGraphicsPipe::init_type();
00070   wglGraphicsStateGuardian::init_type();
00071   wglGraphicsWindow::init_type();
00072 
00073   GraphicsPipeSelection *selection = GraphicsPipeSelection::get_global_ptr();
00074   selection->add_pipe_type(wglGraphicsPipe::get_class_type(),
00075                            wglGraphicsPipe::pipe_constructor);
00076 
00077   PandaSystem *ps = PandaSystem::get_global_ptr();
00078   ps->set_system_tag("OpenGL", "window_system", "WGL");
00079 }
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