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annotate src/video/wincommon/SDL_wingl.c @ 1683:396a35389351 SDL-1.3

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Finished palettized display handling. Added support for surface palette sharing.
author Sam Lantinga <slouken@libsdl.org>
date Sat, 17 Jun 2006 06:45:14 +0000
parents 4da1ee79c9af
children a51dfda0ff33
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 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 Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 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 Lesser 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 Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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 #include "SDL_config.h"
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23
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24 /* WGL implementation of SDL OpenGL support */
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25
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26 #if SDL_VIDEO_OPENGL
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27 #include "SDL_opengl.h"
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28 #endif
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29 #include "SDL_lowvideo.h"
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30 #include "SDL_wingl_c.h"
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31
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32 #if SDL_VIDEO_OPENGL
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33 #define DEFAULT_GL_DRIVER_PATH "OPENGL32.DLL"
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34 #endif
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35
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36 /* If setting the HDC fails, we may need to recreate the window (MSDN) */
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37 static int
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38 WIN_GL_ResetWindow(_THIS)
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39 {
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40 int status = 0;
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41
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42 #ifndef _WIN32_WCE /* FIXME WinCE needs the UNICODE version of CreateWindow() */
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43 /* This doesn't work with DirectX code (see CVS comments) */
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44 /* If we were passed a window, then we can't create a new one */
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45 if (!SDL_windowid && SDL_strcmp(this->name, "windib") == 0) {
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46 /* Save the existing window attributes */
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47 LONG style;
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48 RECT rect = { 0, 0, 0, 0 };
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49 style = GetWindowLong(SDL_Window, GWL_STYLE);
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50 GetWindowRect(SDL_Window, &rect);
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51 DestroyWindow(SDL_Window);
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52 WIN_FlushMessageQueue();
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53
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54 SDL_Window = CreateWindow(SDL_Appname, SDL_Appname,
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55 style,
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56 rect.left, rect.top,
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57 (rect.right - rect.left) + 1,
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58 (rect.top - rect.bottom) + 1,
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59 NULL, NULL, SDL_Instance, NULL);
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60 WIN_FlushMessageQueue();
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61
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62 if (SDL_Window) {
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63 this->SetCaption(this, this->wm_title, this->wm_icon);
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64 } else {
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65 SDL_SetError("Couldn't create window");
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66 status = -1;
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67 }
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68 } else
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69 #endif /* !_WIN32_WCE */
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70 {
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71 SDL_SetError("Unable to reset window for OpenGL context");
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72 status = -1;
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73 }
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74 return (status);
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75 }
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76
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77 #if SDL_VIDEO_OPENGL
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78
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79 static int
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80 ExtensionSupported(const char *extension, const char *extensions)
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81 {
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82 const char *start;
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83 const char *where, *terminator;
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84
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85 /* Extension names should not have spaces. */
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86 where = SDL_strchr(extension, ' ');
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87 if (where || *extension == '\0')
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88 return 0;
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89
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90 if (!extensions)
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91 return 0;
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92
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93 /* It takes a bit of care to be fool-proof about parsing the
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94 * OpenGL extensions string. Don't be fooled by sub-strings,
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95 * etc. */
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96
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97 start = extensions;
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98
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99 for (;;) {
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100 where = SDL_strstr(start, extension);
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101 if (!where)
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102 break;
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103
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104 terminator = where + SDL_strlen(extension);
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105 if (where == start || *(where - 1) == ' ')
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106 if (*terminator == ' ' || *terminator == '\0')
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107 return 1;
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108
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109 start = terminator;
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110 }
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111
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112 return 0;
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113 }
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114
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115 static void
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116 Init_WGL_ARB_extensions(_THIS)
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117 {
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118 HWND hwnd;
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119 HDC hdc;
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120 HGLRC hglrc;
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121 int pformat;
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122 const char *(WINAPI * wglGetExtensionsStringARB) (HDC) = 0;
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123 const char *extensions;
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124
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125 hwnd = CreateWindow(SDL_Appname, SDL_Appname, WS_POPUP | WS_DISABLED,
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126 0, 0, 10, 10, NULL, NULL, SDL_Instance, NULL);
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127 WIN_FlushMessageQueue();
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128
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129 hdc = GetDC(hwnd);
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130
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131 pformat = ChoosePixelFormat(hdc, &GL_pfd);
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132 SetPixelFormat(hdc, pformat, &GL_pfd);
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133
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134 hglrc = this->gl_data->wglCreateContext(hdc);
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135 if (hglrc) {
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136 this->gl_data->wglMakeCurrent(hdc, hglrc);
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137 }
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138
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139 wglGetExtensionsStringARB = (const char *(WINAPI *) (HDC))
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140 this->gl_data->wglGetProcAddress("wglGetExtensionsStringARB");
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141
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142 if (wglGetExtensionsStringARB) {
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143 extensions = wglGetExtensionsStringARB(hdc);
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144 } else {
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145 extensions = NULL;
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146 }
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147
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148 this->gl_data->WGL_ARB_pixel_format = 0;
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149 if (ExtensionSupported("WGL_ARB_pixel_format", extensions)) {
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150 this->gl_data->wglChoosePixelFormatARB = (BOOL(WINAPI *)
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151 (HDC, const int *,
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152 const FLOAT *, UINT, int *,
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153 UINT *)) this->gl_data->
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154 wglGetProcAddress("wglChoosePixelFormatARB");
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155 this->gl_data->wglGetPixelFormatAttribivARB =
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156 (BOOL(WINAPI *) (HDC, int, int, UINT, const int *, int *))
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157 this->gl_data->wglGetProcAddress("wglGetPixelFormatAttribivARB");
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158
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159 if ((this->gl_data->wglChoosePixelFormatARB != NULL) &&
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160 (this->gl_data->wglGetPixelFormatAttribivARB != NULL)) {
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161 this->gl_data->WGL_ARB_pixel_format = 1;
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162 }
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163 }
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164
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165 if (hglrc) {
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166 this->gl_data->wglMakeCurrent(NULL, NULL);
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167 this->gl_data->wglDeleteContext(hglrc);
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168 }
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169 ReleaseDC(hwnd, hdc);
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170 DestroyWindow(hwnd);
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171 WIN_FlushMessageQueue();
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172 }
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173
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174 #endif /* SDL_VIDEO_OPENGL */
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175
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176 int
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177 WIN_GL_SetupWindow(_THIS)
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178 {
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179 int retval;
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180 #if SDL_VIDEO_OPENGL
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181 int i;
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182 unsigned int matching;
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183 int iAttribs[64];
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184 int *iAttr;
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185 float fAttribs[1] = { 0 };
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186 const GLubyte *(WINAPI * glGetStringFunc) (GLenum);
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187 const char *wglext;
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188
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189 /* load the gl driver from a default path */
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190 if (!this->gl_config.driver_loaded) {
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191 /* no driver has been loaded, use default (ourselves) */
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192 if (WIN_GL_LoadLibrary(this, NULL) < 0) {
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193 return (-1);
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194 }
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195 }
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196
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197 for (i = 0;; ++i) {
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198 /* Get the window device context for our OpenGL drawing */
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199 GL_hdc = GetDC(SDL_Window);
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200 if (GL_hdc == NULL) {
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201 SDL_SetError("Unable to get DC for SDL_Window");
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202 return (-1);
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203 }
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204
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205 /* Set up the pixel format descriptor with our needed format */
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206 SDL_memset(&GL_pfd, 0, sizeof(GL_pfd));
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207 GL_pfd.nSize = sizeof(GL_pfd);
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208 GL_pfd.nVersion = 1;
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209 GL_pfd.dwFlags = (PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL);
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210 if (this->gl_config.double_buffer) {
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211 GL_pfd.dwFlags |= PFD_DOUBLEBUFFER;
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212 }
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213 if (this->gl_config.stereo) {
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214 GL_pfd.dwFlags |= PFD_STEREO;
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215 }
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216 GL_pfd.iPixelType = PFD_TYPE_RGBA;
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217 GL_pfd.cColorBits = this->gl_config.buffer_size;
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218 GL_pfd.cRedBits = this->gl_config.red_size;
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219 GL_pfd.cGreenBits = this->gl_config.green_size;
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220 GL_pfd.cBlueBits = this->gl_config.blue_size;
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221 GL_pfd.cAlphaBits = this->gl_config.alpha_size;
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222 GL_pfd.cAccumRedBits = this->gl_config.accum_red_size;
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223 GL_pfd.cAccumGreenBits = this->gl_config.accum_green_size;
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224 GL_pfd.cAccumBlueBits = this->gl_config.accum_blue_size;
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225 GL_pfd.cAccumAlphaBits = this->gl_config.accum_alpha_size;
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226 GL_pfd.cAccumBits =
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227 (GL_pfd.cAccumRedBits + GL_pfd.cAccumGreenBits +
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228 GL_pfd.cAccumBlueBits + GL_pfd.cAccumAlphaBits);
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229 GL_pfd.cDepthBits = this->gl_config.depth_size;
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230 GL_pfd.cStencilBits = this->gl_config.stencil_size;
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231
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232 /* initialize WGL_ARB_pixel_format */
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233 Init_WGL_ARB_extensions(this);
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234
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235 /* setup WGL_ARB_pixel_format attribs */
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236 iAttr = &iAttribs[0];
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237
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238 *iAttr++ = WGL_DRAW_TO_WINDOW_ARB;
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239 *iAttr++ = GL_TRUE;
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240 *iAttr++ = WGL_ACCELERATION_ARB;
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241 *iAttr++ = WGL_FULL_ACCELERATION_ARB;
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242 *iAttr++ = WGL_RED_BITS_ARB;
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243 *iAttr++ = this->gl_config.red_size;
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244 *iAttr++ = WGL_GREEN_BITS_ARB;
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245 *iAttr++ = this->gl_config.green_size;
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246 *iAttr++ = WGL_BLUE_BITS_ARB;
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247 *iAttr++ = this->gl_config.blue_size;
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248
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diff changeset
249 if (this->gl_config.alpha_size) {
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250 *iAttr++ = WGL_ALPHA_BITS_ARB;
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251 *iAttr++ = this->gl_config.alpha_size;
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252 }
655
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253
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254 *iAttr++ = WGL_DOUBLE_BUFFER_ARB;
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255 *iAttr++ = this->gl_config.double_buffer;
655
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256
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257 *iAttr++ = WGL_DEPTH_BITS_ARB;
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258 *iAttr++ = this->gl_config.depth_size;
655
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259
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260 if (this->gl_config.stencil_size) {
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261 *iAttr++ = WGL_STENCIL_BITS_ARB;
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262 *iAttr++ = this->gl_config.stencil_size;
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263 }
655
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264
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265 if (this->gl_config.accum_red_size) {
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266 *iAttr++ = WGL_ACCUM_RED_BITS_ARB;
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267 *iAttr++ = this->gl_config.accum_red_size;
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268 }
655
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269
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270 if (this->gl_config.accum_green_size) {
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271 *iAttr++ = WGL_ACCUM_GREEN_BITS_ARB;
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272 *iAttr++ = this->gl_config.accum_green_size;
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273 }
655
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274
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275 if (this->gl_config.accum_blue_size) {
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276 *iAttr++ = WGL_ACCUM_BLUE_BITS_ARB;
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277 *iAttr++ = this->gl_config.accum_blue_size;
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278 }
655
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279
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280 if (this->gl_config.accum_alpha_size) {
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281 *iAttr++ = WGL_ACCUM_ALPHA_BITS_ARB;
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282 *iAttr++ = this->gl_config.accum_alpha_size;
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283 }
655
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diff changeset
284
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285 if (this->gl_config.stereo) {
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286 *iAttr++ = WGL_STEREO_ARB;
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diff changeset
287 *iAttr++ = GL_TRUE;
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288 }
655
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diff changeset
289
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diff changeset
290 if (this->gl_config.multisamplebuffers) {
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291 *iAttr++ = WGL_SAMPLE_BUFFERS_ARB;
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292 *iAttr++ = this->gl_config.multisamplebuffers;
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293 }
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diff changeset
294
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diff changeset
295 if (this->gl_config.multisamplesamples) {
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diff changeset
296 *iAttr++ = WGL_SAMPLES_ARB;
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297 *iAttr++ = this->gl_config.multisamplesamples;
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diff changeset
298 }
655
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diff changeset
299
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diff changeset
300 if (this->gl_config.accelerated >= 0) {
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diff changeset
301 *iAttr++ = WGL_ACCELERATION_ARB;
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diff changeset
302 *iAttr++ =
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diff changeset
303 (this->gl_config.
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diff changeset
304 accelerated ? WGL_GENERIC_ACCELERATION_ARB :
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diff changeset
305 WGL_NO_ACCELERATION_ARB);
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diff changeset
306 }
655
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diff changeset
307
1662
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diff changeset
308 *iAttr = 0;
655
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diff changeset
309
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diff changeset
310 /* Choose and set the closest available pixel format */
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diff changeset
311 if (!this->gl_data->WGL_ARB_pixel_format ||
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diff changeset
312 !this->gl_data->wglChoosePixelFormatARB(GL_hdc, iAttribs,
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diff changeset
313 fAttribs, 1,
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diff changeset
314 &pixel_format, &matching)
1662
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diff changeset
315 || !matching) {
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diff changeset
316 pixel_format = ChoosePixelFormat(GL_hdc, &GL_pfd);
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diff changeset
317 this->gl_data->WGL_ARB_pixel_format = 0;
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diff changeset
318 }
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diff changeset
319 if (!pixel_format) {
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320 SDL_SetError("No matching GL pixel format available");
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diff changeset
321 return (-1);
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322 }
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diff changeset
323 if (!SetPixelFormat(GL_hdc, pixel_format, &GL_pfd)) {
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diff changeset
324 if (i == 0) {
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diff changeset
325 /* First time through, try resetting the window */
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diff changeset
326 if (WIN_GL_ResetWindow(this) < 0) {
1662
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diff changeset
327 return (-1);
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diff changeset
328 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
329 continue;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
330 }
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diff changeset
331 SDL_SetError("Unable to set HDC pixel format");
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diff changeset
332 return (-1);
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diff changeset
333 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
334 /* We either succeeded or failed by this point */
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diff changeset
335 break;
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diff changeset
336 }
1668
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diff changeset
337 DescribePixelFormat(GL_hdc, pixel_format, sizeof(GL_pfd), &GL_pfd);
0
74212992fb08 Initial revision
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parents:
diff changeset
338
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diff changeset
339 GL_hrc = this->gl_data->wglCreateContext(GL_hdc);
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diff changeset
340 if (GL_hrc == NULL) {
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341 SDL_SetError("Unable to create GL context");
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diff changeset
342 return (-1);
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diff changeset
343 }
1668
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diff changeset
344 if (WIN_GL_MakeCurrent(this) < 0) {
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diff changeset
345 return (-1);
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diff changeset
346 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
347 gl_active = 1;
1656
96c2f89cc7e1 SDL-trunk-1.3-merge-1
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parents: 1527
diff changeset
348
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diff changeset
349 /* Vsync control under Windows. Checking glGetString here is
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diff changeset
350 * somewhat a documented and reliable hack - it was originally
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diff changeset
351 * as a feature added by mistake, but since so many people rely
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diff changeset
352 * on it, it will not be removed. strstr should be safe here.*/
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diff changeset
353 glGetStringFunc = WIN_GL_GetProcAddress(this, "glGetString");
1662
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diff changeset
354 if (glGetStringFunc) {
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diff changeset
355 wglext = (const char *) glGetStringFunc(GL_EXTENSIONS);
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diff changeset
356 } else {
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diff changeset
357 /* Uh oh, something is seriously wrong here... */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
358 wglext = NULL;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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diff changeset
359 }
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diff changeset
360 if (!wglext || !SDL_strstr(wglext, "WGL_EXT_swap_control")) {
1662
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diff changeset
361 this->gl_data->wglSwapIntervalEXT = NULL;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1659
diff changeset
362 this->gl_data->wglGetSwapIntervalEXT = NULL;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1659
diff changeset
363 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1659
diff changeset
364 if (this->gl_config.swap_control >= 0) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1659
diff changeset
365 if (this->gl_data->wglSwapIntervalEXT) {
1668
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diff changeset
366 this->gl_data->wglSwapIntervalEXT(this->gl_config.swap_control);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1659
diff changeset
367 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
368 }
0
74212992fb08 Initial revision
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parents:
diff changeset
369 #else
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370 SDL_SetError("WIN driver not configured with OpenGL");
0
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diff changeset
371 #endif
1662
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parents: 1659
diff changeset
372 if (gl_active) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1659
diff changeset
373 retval = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1659
diff changeset
374 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1659
diff changeset
375 retval = -1;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1659
diff changeset
376 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1659
diff changeset
377 return (retval);
0
74212992fb08 Initial revision
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parents:
diff changeset
378 }
74212992fb08 Initial revision
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parents:
diff changeset
379
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1659
diff changeset
380 void
1668
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diff changeset
381 WIN_GL_ShutDown(_THIS)
0
74212992fb08 Initial revision
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parents:
diff changeset
382 {
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
383 #if SDL_VIDEO_OPENGL
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1659
diff changeset
384 /* Clean up OpenGL */
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
385 if (GL_hrc) {
1668
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parents: 1662
diff changeset
386 this->gl_data->wglMakeCurrent(NULL, NULL);
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parents: 1662
diff changeset
387 this->gl_data->wglDeleteContext(GL_hrc);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
388 GL_hrc = NULL;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
389 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1659
diff changeset
390 if (GL_hdc) {
1668
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diff changeset
391 ReleaseDC(SDL_Window, GL_hdc);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
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parents: 1659
diff changeset
392 GL_hdc = NULL;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
393 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
394 gl_active = 0;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
395
1668
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parents: 1662
diff changeset
396 WIN_GL_UnloadLibrary(this);
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
397 #endif /* SDL_VIDEO_OPENGL */
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
398 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
399
1361
19418e4422cb New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents: 1358
diff changeset
400 #if SDL_VIDEO_OPENGL
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
401
74212992fb08 Initial revision
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parents:
diff changeset
402 /* Make the current context active */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
403 int
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
404 WIN_GL_MakeCurrent(_THIS)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
405 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
406 int retval;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
407
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
408 retval = 0;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
409 if (!this->gl_data->wglMakeCurrent(GL_hdc, GL_hrc)) {
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
410 SDL_SetError("Unable to make GL context current");
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
411 retval = -1;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
412 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
413 return (retval);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
414 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
415
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
416 /* Get attribute data from glX. */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
417 int
1668
4da1ee79c9af more tweaking indent options
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parents: 1662
diff changeset
418 WIN_GL_GetAttribute(_THIS, SDL_GLattr attrib, int *value)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
419 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
420 int retval;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
421
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
422 if (this->gl_data->WGL_ARB_pixel_format) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
423 int wgl_attrib;
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
424
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
425 switch (attrib) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
426 case SDL_GL_RED_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
427 wgl_attrib = WGL_RED_BITS_ARB;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
428 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
429 case SDL_GL_GREEN_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
430 wgl_attrib = WGL_GREEN_BITS_ARB;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
431 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
432 case SDL_GL_BLUE_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
433 wgl_attrib = WGL_BLUE_BITS_ARB;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
434 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
435 case SDL_GL_ALPHA_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
436 wgl_attrib = WGL_ALPHA_BITS_ARB;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
437 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
438 case SDL_GL_DOUBLEBUFFER:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
439 wgl_attrib = WGL_DOUBLE_BUFFER_ARB;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
440 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
441 case SDL_GL_BUFFER_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
442 wgl_attrib = WGL_COLOR_BITS_ARB;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
443 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
444 case SDL_GL_DEPTH_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
445 wgl_attrib = WGL_DEPTH_BITS_ARB;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
446 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
447 case SDL_GL_STENCIL_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
448 wgl_attrib = WGL_STENCIL_BITS_ARB;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
449 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
450 case SDL_GL_ACCUM_RED_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
451 wgl_attrib = WGL_ACCUM_RED_BITS_ARB;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
452 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
453 case SDL_GL_ACCUM_GREEN_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
454 wgl_attrib = WGL_ACCUM_GREEN_BITS_ARB;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
455 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
456 case SDL_GL_ACCUM_BLUE_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
457 wgl_attrib = WGL_ACCUM_BLUE_BITS_ARB;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
458 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
459 case SDL_GL_ACCUM_ALPHA_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
460 wgl_attrib = WGL_ACCUM_ALPHA_BITS_ARB;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
461 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
462 case SDL_GL_STEREO:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
463 wgl_attrib = WGL_STEREO_ARB;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
464 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
465 case SDL_GL_MULTISAMPLEBUFFERS:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
466 wgl_attrib = WGL_SAMPLE_BUFFERS_ARB;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
467 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
468 case SDL_GL_MULTISAMPLESAMPLES:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
469 wgl_attrib = WGL_SAMPLES_ARB;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
470 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
471 case SDL_GL_ACCELERATED_VISUAL:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
472 wgl_attrib = WGL_ACCELERATION_ARB;
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
473 this->gl_data->wglGetPixelFormatAttribivARB(GL_hdc,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
474 pixel_format, 0,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
475 1, &wgl_attrib,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
476 value);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
477 if (*value == WGL_NO_ACCELERATION_ARB) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
478 *value = SDL_FALSE;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
479 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
480 *value = SDL_TRUE;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
481 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
482 return 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
483 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
484 case SDL_GL_SWAP_CONTROL:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
485 if (this->gl_data->wglGetSwapIntervalEXT) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
486 return this->gl_data->wglGetSwapIntervalEXT();
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
487 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
488 return -1;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
489 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
490 default:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
491 return (-1);
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
492 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
493 this->gl_data->wglGetPixelFormatAttribivARB(GL_hdc, pixel_format,
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
494 0, 1, &wgl_attrib, value);
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
495
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
496 return 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
497 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
498
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
499 retval = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
500 switch (attrib) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
501 case SDL_GL_RED_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
502 *value = GL_pfd.cRedBits;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
503 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
504 case SDL_GL_GREEN_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
505 *value = GL_pfd.cGreenBits;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
506 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
507 case SDL_GL_BLUE_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
508 *value = GL_pfd.cBlueBits;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
509 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
510 case SDL_GL_ALPHA_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
511 *value = GL_pfd.cAlphaBits;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
512 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
513 case SDL_GL_DOUBLEBUFFER:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
514 if (GL_pfd.dwFlags & PFD_DOUBLEBUFFER) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
515 *value = 1;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
516 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
517 *value = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
518 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
519 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
520 case SDL_GL_BUFFER_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
521 *value = GL_pfd.cColorBits;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
522 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
523 case SDL_GL_DEPTH_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
524 *value = GL_pfd.cDepthBits;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
525 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
526 case SDL_GL_STENCIL_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
527 *value = GL_pfd.cStencilBits;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
528 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
529 case SDL_GL_ACCUM_RED_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
530 *value = GL_pfd.cAccumRedBits;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
531 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
532 case SDL_GL_ACCUM_GREEN_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
533 *value = GL_pfd.cAccumGreenBits;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
534 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
535 case SDL_GL_ACCUM_BLUE_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
536 *value = GL_pfd.cAccumBlueBits;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
537 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
538 case SDL_GL_ACCUM_ALPHA_SIZE:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
539 *value = GL_pfd.cAccumAlphaBits;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
540 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
541 case SDL_GL_STEREO:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
542 if (GL_pfd.dwFlags & PFD_STEREO) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
543 *value = 1;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
544 } else {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
545 *value = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
546 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
547 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
548 case SDL_GL_MULTISAMPLEBUFFERS:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
549 *value = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
550 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
551 case SDL_GL_MULTISAMPLESAMPLES:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
552 *value = 1;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
553 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
554 default:
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
555 retval = -1;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
556 break;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
557 }
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
558 return retval;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
559 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
560
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
561 void
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
562 WIN_GL_SwapBuffers(_THIS)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
563 {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
564 SwapBuffers(GL_hdc);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
565 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
566
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
567 void
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
568 WIN_GL_UnloadLibrary(_THIS)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
569 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
570 if (this->gl_config.driver_loaded) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
571 FreeLibrary((HMODULE) this->gl_config.dll_handle);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
572
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
573 this->gl_data->wglGetProcAddress = NULL;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
574 this->gl_data->wglCreateContext = NULL;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
575 this->gl_data->wglDeleteContext = NULL;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
576 this->gl_data->wglMakeCurrent = NULL;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
577 this->gl_data->wglChoosePixelFormatARB = NULL;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
578 this->gl_data->wglGetPixelFormatAttribivARB = NULL;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
579 this->gl_data->wglSwapIntervalEXT = NULL;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
580 this->gl_data->wglGetSwapIntervalEXT = NULL;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
581
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
582 this->gl_config.dll_handle = NULL;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
583 this->gl_config.driver_loaded = 0;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
584 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
585 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
586
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
587 /* Passing a NULL path means load pointers from the application */
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
588 int
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
589 WIN_GL_LoadLibrary(_THIS, const char *path)
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
590 {
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
591 HMODULE handle;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
592
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
593 if (gl_active) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
594 SDL_SetError("OpenGL context already created");
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
595 return -1;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
596 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
597
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
598 if (path == NULL) {
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
599 path = DEFAULT_GL_DRIVER_PATH;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
600 }
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
601 handle = LoadLibrary(path);
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
602 if (handle == NULL) {
1668
4da1ee79c9af more tweaking indent options
Sam Lantinga <slouken@libsdl.org>
parents: 1662
diff changeset
603 SDL_SetError("Could not load OpenGL library");
1662
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
604 return -1;
782fd950bd46 Revamp of the video system in progress - adding support for multiple displays, multiple windows, and a full video mode selection API.
Sam Lantinga <slouken@libsdl.org>
parents: 1659
diff changeset
605 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
606
1662
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607 /* Unload the old driver and reset the pointers */
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608 WIN_GL_UnloadLibrary(this);
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609
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610 /* Load new function pointers */
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611 SDL_memset(this->gl_data, 0, sizeof(*this->gl_data));
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612 this->gl_data->wglGetProcAddress = (void *(WINAPI *) (const char *))
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613 GetProcAddress(handle, "wglGetProcAddress");
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614 this->gl_data->wglCreateContext = (HGLRC(WINAPI *) (HDC))
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615 GetProcAddress(handle, "wglCreateContext");
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616 this->gl_data->wglDeleteContext = (BOOL(WINAPI *) (HGLRC))
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617 GetProcAddress(handle, "wglDeleteContext");
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618 this->gl_data->wglMakeCurrent = (BOOL(WINAPI *) (HDC, HGLRC))
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619 GetProcAddress(handle, "wglMakeCurrent");
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620 this->gl_data->wglSwapIntervalEXT = (void (WINAPI *) (int))
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621 GetProcAddress(handle, "wglSwapIntervalEXT");
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622 this->gl_data->wglGetSwapIntervalEXT = (int (WINAPI *) (void))
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623 GetProcAddress(handle, "wglGetSwapIntervalEXT");
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624
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625 if ((this->gl_data->wglGetProcAddress == NULL) ||
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626 (this->gl_data->wglCreateContext == NULL) ||
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627 (this->gl_data->wglDeleteContext == NULL) ||
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628 (this->gl_data->wglMakeCurrent == NULL)) {
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629 SDL_SetError("Could not retrieve OpenGL functions");
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630 FreeLibrary(handle);
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631 return -1;
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632 }
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633
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634 this->gl_config.dll_handle = handle;
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635 SDL_strlcpy(this->gl_config.driver_path, path,
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636 SDL_arraysize(this->gl_config.driver_path));
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637 this->gl_config.driver_loaded = 1;
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638 return 0;
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639 }
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640
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641 void *
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642 WIN_GL_GetProcAddress(_THIS, const char *proc)
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643 {
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644 void *func;
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645
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646 /* This is to pick up extensions */
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647 func = this->gl_data->wglGetProcAddress(proc);
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648 if (!func) {
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649 /* This is probably a normal GL function */
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650 func = GetProcAddress(this->gl_config.dll_handle, proc);
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651 }
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652 return func;
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653 }
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654
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655 #endif /* SDL_VIDEO_OPENGL */
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656 /* vi: set ts=4 sw=4 expandtab: */