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annotate src/video/wincommon/SDL_wingl_c.h @ 1145:d31afac94eff

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Patch from Martin Lange (mala-sdl at hotmail.com) to unregister SDL's win32 windowclass when shutting down the video subsystem...this allows you to safely unload/reload the SDL shared library on Windows between initializations. Discussion is here: http://www.devolution.com/pipermail/sdl/2005-February/067424.html
author Ryan C. Gordon <icculus@icculus.org>
date Tue, 27 Sep 2005 09:00:42 +0000
parents b8d311d90021
children c9b51268668f
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2004 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 /* WGL implementation of SDL OpenGL support */
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29
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30 #include "SDL_sysvideo.h"
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31
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32
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33 struct SDL_PrivateGLData {
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34 int gl_active; /* to stop switching drivers while we have a valid context */
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35
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36 #ifdef HAVE_OPENGL
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37 PIXELFORMATDESCRIPTOR GL_pfd;
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38 HDC GL_hdc;
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39 HGLRC GL_hrc;
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40 int pixel_format;
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41 int wgl_arb_pixel_format;
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42
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43 void * (WINAPI *wglGetProcAddress)(const char *proc);
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44
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45 HGLRC (WINAPI *wglCreateContext)(HDC hdc);
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46
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47 BOOL (WINAPI *wglDeleteContext)(HGLRC hglrc);
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48
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49 BOOL (WINAPI *wglMakeCurrent)(HDC hdc, HGLRC hglrc);
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50
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51 BOOL (WINAPI *wglChoosePixelFormatARB)(HDC hdc, const int *piAttribIList,
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52 const FLOAT *pfAttribFList,
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53 UINT nMaxFormats, int *piFormats,
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54 UINT *nNumFormats);
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55 BOOL (WINAPI *wglGetPixelFormatAttribivARB)(HDC hdc, int iPixelFormat,
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56 int iLayerPlane,
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57 UINT nAttributes,
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58 const int *piAttributes,
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59 int *piValues);
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60 #endif /* HAVE_OPENGL */
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61 };
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62
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63 /* Old variable names */
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64 #define gl_active (this->gl_data->gl_active)
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65 #define GL_pfd (this->gl_data->GL_pfd)
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66 #define GL_hdc (this->gl_data->GL_hdc)
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67 #define GL_hrc (this->gl_data->GL_hrc)
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68 #define pixel_format (this->gl_data->pixel_format)
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69
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70 /* OpenGL functions */
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71 extern int WIN_GL_SetupWindow(_THIS);
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72 extern void WIN_GL_ShutDown(_THIS);
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73 #ifdef HAVE_OPENGL
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74 extern int WIN_GL_MakeCurrent(_THIS);
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75 extern int WIN_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value);
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76 extern void WIN_GL_SwapBuffers(_THIS);
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77 extern void WIN_GL_UnloadLibrary(_THIS);
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78 extern int WIN_GL_LoadLibrary(_THIS, const char* path);
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79 extern void *WIN_GL_GetProcAddress(_THIS, const char* proc);
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80 #endif
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81
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82 #ifdef HAVE_OPENGL
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83
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84 #ifndef WGL_ARB_pixel_format
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85 #define WGL_NUMBER_PIXEL_FORMATS_ARB 0x2000
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86 #define WGL_DRAW_TO_WINDOW_ARB 0x2001
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87 #define WGL_DRAW_TO_BITMAP_ARB 0x2002
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88 #define WGL_ACCELERATION_ARB 0x2003
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89 #define WGL_NEED_PALETTE_ARB 0x2004
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90 #define WGL_NEED_SYSTEM_PALETTE_ARB 0x2005
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91 #define WGL_SWAP_LAYER_BUFFERS_ARB 0x2006
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92 #define WGL_SWAP_METHOD_ARB 0x2007
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93 #define WGL_NUMBER_OVERLAYS_ARB 0x2008
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94 #define WGL_NUMBER_UNDERLAYS_ARB 0x2009
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95 #define WGL_TRANSPARENT_ARB 0x200A
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96 #define WGL_TRANSPARENT_RED_VALUE_ARB 0x2037
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97 #define WGL_TRANSPARENT_GREEN_VALUE_ARB 0x2038
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98 #define WGL_TRANSPARENT_BLUE_VALUE_ARB 0x2039
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99 #define WGL_TRANSPARENT_ALPHA_VALUE_ARB 0x203A
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100 #define WGL_TRANSPARENT_INDEX_VALUE_ARB 0x203B
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101 #define WGL_SHARE_DEPTH_ARB 0x200C
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102 #define WGL_SHARE_STENCIL_ARB 0x200D
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103 #define WGL_SHARE_ACCUM_ARB 0x200E
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104 #define WGL_SUPPORT_GDI_ARB 0x200F
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105 #define WGL_SUPPORT_OPENGL_ARB 0x2010
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106 #define WGL_DOUBLE_BUFFER_ARB 0x2011
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107 #define WGL_STEREO_ARB 0x2012
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108 #define WGL_PIXEL_TYPE_ARB 0x2013
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109 #define WGL_COLOR_BITS_ARB 0x2014
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110 #define WGL_RED_BITS_ARB 0x2015
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111 #define WGL_RED_SHIFT_ARB 0x2016
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112 #define WGL_GREEN_BITS_ARB 0x2017
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113 #define WGL_GREEN_SHIFT_ARB 0x2018
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114 #define WGL_BLUE_BITS_ARB 0x2019
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115 #define WGL_BLUE_SHIFT_ARB 0x201A
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116 #define WGL_ALPHA_BITS_ARB 0x201B
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117 #define WGL_ALPHA_SHIFT_ARB 0x201C
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118 #define WGL_ACCUM_BITS_ARB 0x201D
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119 #define WGL_ACCUM_RED_BITS_ARB 0x201E
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120 #define WGL_ACCUM_GREEN_BITS_ARB 0x201F
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121 #define WGL_ACCUM_BLUE_BITS_ARB 0x2020
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122 #define WGL_ACCUM_ALPHA_BITS_ARB 0x2021
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123 #define WGL_DEPTH_BITS_ARB 0x2022
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124 #define WGL_STENCIL_BITS_ARB 0x2023
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125 #define WGL_AUX_BUFFERS_ARB 0x2024
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126 #define WGL_NO_ACCELERATION_ARB 0x2025
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127 #define WGL_GENERIC_ACCELERATION_ARB 0x2026
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128 #define WGL_FULL_ACCELERATION_ARB 0x2027
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129 #define WGL_SWAP_EXCHANGE_ARB 0x2028
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130 #define WGL_SWAP_COPY_ARB 0x2029
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131 #define WGL_SWAP_UNDEFINED_ARB 0x202A
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132 #define WGL_TYPE_RGBA_ARB 0x202B
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133 #define WGL_TYPE_COLORINDEX_ARB 0x202C
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134 #endif
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135
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136 #ifndef WGL_ARB_multisample
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137 #define WGL_SAMPLE_BUFFERS_ARB 0x2041
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138 #define WGL_SAMPLES_ARB 0x2042
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139 #endif
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140
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141 #endif