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annotate src/video/wincommon/SDL_wingl.c @ 1316:0781906086fa

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author Sam Lantinga <slouken@libsdl.org>
date Wed, 01 Feb 2006 08:24:32 +0000
parents e94b0d7c33bc
children 450721ad5436
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
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23 #include <stdlib.h>
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24 #include <string.h>
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25
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26 /* WGL implementation of SDL OpenGL support */
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27
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28 #ifdef HAVE_OPENGL
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29 #include "SDL_opengl.h"
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30 #endif
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31 #include "SDL_error.h"
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32 #include "SDL_lowvideo.h"
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33 #include "SDL_wingl_c.h"
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34
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35 #ifdef HAVE_OPENGL
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36 #define DEFAULT_GL_DRIVER_PATH "OPENGL32.DLL"
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37 #endif
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38
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39 /* If setting the HDC fails, we may need to recreate the window (MSDN) */
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40 static int WIN_GL_ResetWindow(_THIS)
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41 {
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42 int status = 0;
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43
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44 #if 0 /* This doesn't work with DirectX code (see CVS comments) */
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45 #ifndef _WIN32_WCE /* FIXME WinCE needs the UNICODE version of CreateWindow() */
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46 /* If we were passed a window, then we can't create a new one */
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47 if ( !SDL_windowid ) {
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48 /* Save the existing window attributes */
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49 LONG style;
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50 RECT rect = { 0, 0, 0, 0 };
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51 style = GetWindowLong(SDL_Window, GWL_STYLE);
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52 GetWindowRect(SDL_Window, &rect);
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53 DestroyWindow(SDL_Window);
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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 if ( SDL_Window ) {
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61 this->SetCaption(this, this->wm_title, this->wm_icon);
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62 } else {
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63 SDL_SetError("Couldn't create window");
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64 status = -1;
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65 }
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66 } else
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67 #endif /* !_WIN32_WCE */
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68 #endif
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69 {
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70 SDL_SetError("Unable to reset window for OpenGL context");
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71 status = -1;
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72 }
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73 return(status);
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74 }
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75
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76 #ifdef HAVE_OPENGL
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77
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78 static int ExtensionSupported(const char *extension, const char *extensions)
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79 {
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80 const char *start;
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81 const char *where, *terminator;
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82
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83 /* Extension names should not have spaces. */
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84 where = strchr(extension, ' ');
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85 if ( where || *extension == '\0' )
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86 return 0;
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87
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88 if ( ! extensions )
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89 return 0;
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90
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91 /* It takes a bit of care to be fool-proof about parsing the
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92 * OpenGL extensions string. Don't be fooled by sub-strings,
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93 * etc. */
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94
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95 start = extensions;
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96
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97 for (;;)
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98 {
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99 where = strstr(start, extension);
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100 if (!where) break;
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101
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102 terminator = where + strlen(extension);
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103 if (where == start || *(where - 1) == ' ')
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104 if (*terminator == ' ' || *terminator == '\0') return 1;
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105
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106 start = terminator;
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107 }
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108
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109 return 0;
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110 }
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111
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112 static void Init_WGL_ARB_extensions(_THIS)
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113 {
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114 HWND hwnd;
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115 HDC hdc;
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116 HGLRC hglrc;
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117 int pformat;
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118 const char * (WINAPI *wglGetExtensionsStringARB)(HDC) = 0;
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119 const char *extensions;
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120
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121 hwnd = CreateWindow(SDL_Appname, SDL_Appname, WS_POPUP | WS_DISABLED,
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122 0, 0, 10, 10,
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123 NULL, NULL, SDL_Instance, NULL);
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124 hdc = GetDC(hwnd);
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125
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126 pformat = ChoosePixelFormat(hdc, &GL_pfd);
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127 SetPixelFormat(hdc, pformat, &GL_pfd);
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128
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129 hglrc = this->gl_data->wglCreateContext(hdc);
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130 if ( hglrc ) {
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131 this->gl_data->wglMakeCurrent(hdc, hglrc);
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132 }
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133
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134 wglGetExtensionsStringARB = (const char * (WINAPI *)(HDC))
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135 this->gl_data->wglGetProcAddress("wglGetExtensionsStringARB");
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136
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137 if( wglGetExtensionsStringARB ) {
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138 extensions = wglGetExtensionsStringARB(hdc);
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139 } else {
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140 extensions = NULL;
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141 }
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142
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143 this->gl_data->WGL_ARB_pixel_format = 0;
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144 if( ExtensionSupported("WGL_ARB_pixel_format", extensions) ) {
655
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145 this->gl_data->wglChoosePixelFormatARB =
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146 (BOOL (WINAPI *)(HDC, const int *, const FLOAT *, UINT, int *, UINT *))
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147 this->gl_data->wglGetProcAddress("wglChoosePixelFormatARB");
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148 this->gl_data->wglGetPixelFormatAttribivARB =
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149 (BOOL (WINAPI *)(HDC, int, int, UINT, const int *, int *))
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150 this->gl_data->wglGetProcAddress("wglGetPixelFormatAttribivARB");
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151
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152 if( (this->gl_data->wglChoosePixelFormatARB != NULL) &&
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153 (this->gl_data->wglGetPixelFormatAttribivARB != NULL) ) {
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154 this->gl_data->WGL_ARB_pixel_format = 1;
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155 }
655
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156 }
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157
671
338a62f9a528 *** empty log message ***
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158 if ( hglrc ) {
338a62f9a528 *** empty log message ***
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159 this->gl_data->wglMakeCurrent(NULL, NULL);
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160 this->gl_data->wglDeleteContext(hglrc);
338a62f9a528 *** empty log message ***
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161 }
655
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162 ReleaseDC(hwnd, hdc);
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163 DestroyWindow(hwnd);
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164 }
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165
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166 #endif /* HAVE_OPENGL */
655
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167
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168 int WIN_GL_SetupWindow(_THIS)
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169 {
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170 int retval;
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171 #ifdef HAVE_OPENGL
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172 int i;
655
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173 unsigned int matching;
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174 int iAttribs[64];
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175 int *iAttr;
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176 float fAttribs[1] = { 0 };
0
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177
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178 /* load the gl driver from a default path */
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179 if ( ! this->gl_config.driver_loaded ) {
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180 /* no driver has been loaded, use default (ourselves) */
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181 if ( WIN_GL_LoadLibrary(this, NULL) < 0 ) {
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182 return(-1);
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183 }
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184 }
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185
373
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186 for ( i=0; ; ++i ) {
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187 /* Get the window device context for our OpenGL drawing */
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188 GL_hdc = GetDC(SDL_Window);
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189 if ( GL_hdc == NULL ) {
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190 SDL_SetError("Unable to get DC for SDL_Window");
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191 return(-1);
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192 }
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193
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194 /* Set up the pixel format descriptor with our needed format */
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diff changeset
195 memset(&GL_pfd, 0, sizeof(GL_pfd));
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diff changeset
196 GL_pfd.nSize = sizeof(GL_pfd);
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diff changeset
197 GL_pfd.nVersion = 1;
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198 GL_pfd.dwFlags = (PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL);
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199 if ( this->gl_config.double_buffer ) {
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200 GL_pfd.dwFlags |= PFD_DOUBLEBUFFER;
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diff changeset
201 }
450
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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diff changeset
202 if ( this->gl_config.stereo ) {
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203 GL_pfd.dwFlags |= PFD_STEREO;
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204 }
373
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diff changeset
205 GL_pfd.iPixelType = PFD_TYPE_RGBA;
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diff changeset
206 GL_pfd.cColorBits = this->gl_config.buffer_size;
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diff changeset
207 GL_pfd.cRedBits = this->gl_config.red_size;
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diff changeset
208 GL_pfd.cGreenBits = this->gl_config.green_size;
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diff changeset
209 GL_pfd.cBlueBits = this->gl_config.blue_size;
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diff changeset
210 GL_pfd.cAlphaBits = this->gl_config.alpha_size;
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diff changeset
211 GL_pfd.cAccumRedBits = this->gl_config.accum_red_size;
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diff changeset
212 GL_pfd.cAccumGreenBits = this->gl_config.accum_green_size;
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diff changeset
213 GL_pfd.cAccumBlueBits = this->gl_config.accum_blue_size;
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diff changeset
214 GL_pfd.cAccumAlphaBits = this->gl_config.accum_alpha_size;
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diff changeset
215 GL_pfd.cAccumBits =
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diff changeset
216 (GL_pfd.cAccumRedBits + GL_pfd.cAccumGreenBits +
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diff changeset
217 GL_pfd.cAccumBlueBits + GL_pfd.cAccumAlphaBits);
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diff changeset
218 GL_pfd.cDepthBits = this->gl_config.depth_size;
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diff changeset
219 GL_pfd.cStencilBits = this->gl_config.stencil_size;
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diff changeset
220
655
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diff changeset
221 /* initialize WGL_ARB_pixel_format */
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diff changeset
222 Init_WGL_ARB_extensions(this);
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diff changeset
223
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diff changeset
224 /* setup WGL_ARB_pixel_format attribs */
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diff changeset
225 iAttr = &iAttribs[0];
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diff changeset
226
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diff changeset
227 *iAttr++ = WGL_DRAW_TO_WINDOW_ARB;
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diff changeset
228 *iAttr++ = GL_TRUE;
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diff changeset
229 *iAttr++ = WGL_ACCELERATION_ARB;
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diff changeset
230 *iAttr++ = WGL_FULL_ACCELERATION_ARB;
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diff changeset
231 *iAttr++ = WGL_RED_BITS_ARB;
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diff changeset
232 *iAttr++ = this->gl_config.red_size;
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diff changeset
233 *iAttr++ = WGL_GREEN_BITS_ARB;
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diff changeset
234 *iAttr++ = this->gl_config.green_size;
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diff changeset
235 *iAttr++ = WGL_BLUE_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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diff changeset
236 *iAttr++ = this->gl_config.blue_size;
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diff changeset
237
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diff changeset
238 if ( this->gl_config.alpha_size ) {
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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diff changeset
239 *iAttr++ = WGL_ALPHA_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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diff changeset
240 *iAttr++ = this->gl_config.alpha_size;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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diff changeset
241 }
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diff changeset
242
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diff changeset
243 *iAttr++ = WGL_DOUBLE_BUFFER_ARB;
e94b0d7c33bc Merged useful fixes from 1.3 branch
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diff changeset
244 *iAttr++ = this->gl_config.double_buffer;
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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diff changeset
245
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diff changeset
246 *iAttr++ = WGL_DEPTH_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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diff changeset
247 *iAttr++ = this->gl_config.depth_size;
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diff changeset
248
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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diff changeset
249 if ( this->gl_config.stencil_size ) {
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diff changeset
250 *iAttr++ = WGL_STENCIL_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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diff changeset
251 *iAttr++ = this->gl_config.stencil_size;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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diff changeset
252 }
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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diff changeset
253
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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diff changeset
254 if ( this->gl_config.accum_red_size ) {
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diff changeset
255 *iAttr++ = WGL_ACCUM_RED_BITS_ARB;
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diff changeset
256 *iAttr++ = this->gl_config.accum_red_size;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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diff changeset
257 }
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
258
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
259 if ( this->gl_config.accum_green_size ) {
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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diff changeset
260 *iAttr++ = WGL_ACCUM_GREEN_BITS_ARB;
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diff changeset
261 *iAttr++ = this->gl_config.accum_green_size;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
262 }
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
263
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
264 if ( this->gl_config.accum_blue_size ) {
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
265 *iAttr++ = WGL_ACCUM_BLUE_BITS_ARB;
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diff changeset
266 *iAttr++ = this->gl_config.accum_blue_size;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
267 }
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
268
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
269 if ( this->gl_config.accum_alpha_size ) {
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
270 *iAttr++ = WGL_ACCUM_ALPHA_BITS_ARB;
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diff changeset
271 *iAttr++ = this->gl_config.accum_alpha_size;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
272 }
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
273
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
274 if ( this->gl_config.stereo ) {
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
275 *iAttr++ = WGL_STEREO_ARB;
1315
e94b0d7c33bc Merged useful fixes from 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
276 *iAttr++ = GL_TRUE;
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
277 }
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
278
656
864e2d2a9a55 Merged in Ryan's multisample code for MacOS, and changed the constants to match.
Sam Lantinga <slouken@libsdl.org>
parents: 655
diff changeset
279 if ( this->gl_config.multisamplebuffers ) {
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
280 *iAttr++ = WGL_SAMPLE_BUFFERS_ARB;
656
864e2d2a9a55 Merged in Ryan's multisample code for MacOS, and changed the constants to match.
Sam Lantinga <slouken@libsdl.org>
parents: 655
diff changeset
281 *iAttr++ = this->gl_config.multisamplebuffers;
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
282 }
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
283
656
864e2d2a9a55 Merged in Ryan's multisample code for MacOS, and changed the constants to match.
Sam Lantinga <slouken@libsdl.org>
parents: 655
diff changeset
284 if ( this->gl_config.multisamplesamples ) {
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
285 *iAttr++ = WGL_SAMPLES_ARB;
656
864e2d2a9a55 Merged in Ryan's multisample code for MacOS, and changed the constants to match.
Sam Lantinga <slouken@libsdl.org>
parents: 655
diff changeset
286 *iAttr++ = this->gl_config.multisamplesamples;
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
287 }
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
288
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
289 *iAttr = 0;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
290
373
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
291 /* Choose and set the closest available pixel format */
1315
e94b0d7c33bc Merged useful fixes from 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
292 if ( !this->gl_data->WGL_ARB_pixel_format ||
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
293 !this->gl_data->wglChoosePixelFormatARB(GL_hdc, iAttribs, fAttribs, 1, &pixel_format, &matching) ||
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
294 !matching ) {
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
295 pixel_format = ChoosePixelFormat(GL_hdc, &GL_pfd);
1315
e94b0d7c33bc Merged useful fixes from 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
296 this->gl_data->WGL_ARB_pixel_format = 0;
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
297 }
373
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
298 if ( !pixel_format ) {
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
299 SDL_SetError("No matching GL pixel format available");
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
300 return(-1);
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
301 }
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
302 if ( !SetPixelFormat(GL_hdc, pixel_format, &GL_pfd) ) {
373
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
303 if ( i == 0 ) {
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
304 /* First time through, try resetting the window */
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
305 if ( WIN_GL_ResetWindow(this) < 0 ) {
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
306 return(-1);
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
307 }
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
308 continue;
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
309 }
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
310 SDL_SetError("Unable to set HDC pixel format");
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
311 return(-1);
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
312 }
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
313 /* We either succeeded or failed by this point */
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
314 break;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
315 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
316 DescribePixelFormat(GL_hdc, pixel_format, sizeof(GL_pfd), &GL_pfd);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
317
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
318 GL_hrc = this->gl_data->wglCreateContext(GL_hdc);
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
319 if ( GL_hrc == NULL ) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
320 SDL_SetError("Unable to create GL context");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
321 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
322 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
323 gl_active = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
324 #else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
325 SDL_SetError("WIN driver not configured with OpenGL");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
326 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
327 if ( gl_active ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
328 retval = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
329 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
330 retval = -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
331 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
332 return(retval);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
333 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
334
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
335 void WIN_GL_ShutDown(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
336 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
337 #ifdef HAVE_OPENGL
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
338 /* Clean up OpenGL */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
339 if ( GL_hrc ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
340 this->gl_data->wglMakeCurrent(NULL, NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
341 this->gl_data->wglDeleteContext(GL_hrc);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
342 GL_hrc = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
343 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
344 if ( GL_hdc ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
345 ReleaseDC(SDL_Window, GL_hdc);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
346 GL_hdc = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
347 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
348 gl_active = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
349
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
350 WIN_GL_UnloadLibrary(this);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
351 #endif /* HAVE_OPENGL */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
352 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
353
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
354 #ifdef HAVE_OPENGL
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
355
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
356 /* Make the current context active */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
357 int WIN_GL_MakeCurrent(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
358 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
359 int retval;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
360
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
361 retval = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
362 if ( ! this->gl_data->wglMakeCurrent(GL_hdc, GL_hrc) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
363 SDL_SetError("Unable to make GL context current");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
364 retval = -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
365 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
366 return(retval);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
367 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
368
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
369 /* Get attribute data from glX. */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
370 int WIN_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
371 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
372 int retval;
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
373
1315
e94b0d7c33bc Merged useful fixes from 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
374 if ( this->gl_data->WGL_ARB_pixel_format ) {
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
375 int wgl_attrib;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
376
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
377 switch(attrib) {
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
378 case SDL_GL_RED_SIZE:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
379 wgl_attrib = WGL_RED_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
380 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
381 case SDL_GL_GREEN_SIZE:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
382 wgl_attrib = WGL_GREEN_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
383 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
384 case SDL_GL_BLUE_SIZE:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
385 wgl_attrib = WGL_BLUE_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
386 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
387 case SDL_GL_ALPHA_SIZE:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
388 wgl_attrib = WGL_ALPHA_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
389 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
390 case SDL_GL_DOUBLEBUFFER:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
391 wgl_attrib = WGL_DOUBLE_BUFFER_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
392 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
393 case SDL_GL_BUFFER_SIZE:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
394 wgl_attrib = WGL_COLOR_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
395 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
396 case SDL_GL_DEPTH_SIZE:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
397 wgl_attrib = WGL_DEPTH_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
398 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
399 case SDL_GL_STENCIL_SIZE:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
400 wgl_attrib = WGL_STENCIL_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
401 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
402 case SDL_GL_ACCUM_RED_SIZE:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
403 wgl_attrib = WGL_ACCUM_RED_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
404 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
405 case SDL_GL_ACCUM_GREEN_SIZE:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
406 wgl_attrib = WGL_ACCUM_GREEN_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
407 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
408 case SDL_GL_ACCUM_BLUE_SIZE:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
409 wgl_attrib = WGL_ACCUM_BLUE_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
410 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
411 case SDL_GL_ACCUM_ALPHA_SIZE:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
412 wgl_attrib = WGL_ACCUM_ALPHA_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
413 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
414 case SDL_GL_STEREO:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
415 wgl_attrib = WGL_STEREO_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
416 break;
656
864e2d2a9a55 Merged in Ryan's multisample code for MacOS, and changed the constants to match.
Sam Lantinga <slouken@libsdl.org>
parents: 655
diff changeset
417 case SDL_GL_MULTISAMPLEBUFFERS:
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
418 wgl_attrib = WGL_SAMPLE_BUFFERS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
419 break;
656
864e2d2a9a55 Merged in Ryan's multisample code for MacOS, and changed the constants to match.
Sam Lantinga <slouken@libsdl.org>
parents: 655
diff changeset
420 case SDL_GL_MULTISAMPLESAMPLES:
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
421 wgl_attrib = WGL_SAMPLES_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
422 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
423 default:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
424 return(-1);
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
425 }
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
426 this->gl_data->wglGetPixelFormatAttribivARB(GL_hdc, pixel_format, 0, 1, &wgl_attrib, value);
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
427
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
428 return 0;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
429 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
430
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
431 retval = 0;
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
432 switch ( attrib ) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
433 case SDL_GL_RED_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
434 *value = GL_pfd.cRedBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
435 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
436 case SDL_GL_GREEN_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
437 *value = GL_pfd.cGreenBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
438 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
439 case SDL_GL_BLUE_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
440 *value = GL_pfd.cBlueBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
441 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
442 case SDL_GL_ALPHA_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
443 *value = GL_pfd.cAlphaBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
444 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
445 case SDL_GL_DOUBLEBUFFER:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
446 if ( GL_pfd.dwFlags & PFD_DOUBLEBUFFER ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
447 *value = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
448 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
449 *value = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
450 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
451 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
452 case SDL_GL_BUFFER_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
453 *value = GL_pfd.cColorBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
454 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
455 case SDL_GL_DEPTH_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
456 *value = GL_pfd.cDepthBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
457 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
458 case SDL_GL_STENCIL_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
459 *value = GL_pfd.cStencilBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
460 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
461 case SDL_GL_ACCUM_RED_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
462 *value = GL_pfd.cAccumRedBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
463 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
464 case SDL_GL_ACCUM_GREEN_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
465 *value = GL_pfd.cAccumGreenBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
466 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
467 case SDL_GL_ACCUM_BLUE_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
468 *value = GL_pfd.cAccumBlueBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
469 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
470 case SDL_GL_ACCUM_ALPHA_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
471 *value = GL_pfd.cAccumAlphaBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
472 break;
450
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents: 373
diff changeset
473 case SDL_GL_STEREO:
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents: 373
diff changeset
474 if ( GL_pfd.dwFlags & PFD_STEREO ) {
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents: 373
diff changeset
475 *value = 1;
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents: 373
diff changeset
476 } else {
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents: 373
diff changeset
477 *value = 0;
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents: 373
diff changeset
478 }
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents: 373
diff changeset
479 break;
1261
031e093ba2a5 Date: Thu, 04 Sep 2003 02:12:35 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 889
diff changeset
480 case SDL_GL_MULTISAMPLEBUFFERS:
031e093ba2a5 Date: Thu, 04 Sep 2003 02:12:35 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 889
diff changeset
481 *value = 0;
031e093ba2a5 Date: Thu, 04 Sep 2003 02:12:35 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 889
diff changeset
482 break;
031e093ba2a5 Date: Thu, 04 Sep 2003 02:12:35 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 889
diff changeset
483 case SDL_GL_MULTISAMPLESAMPLES:
031e093ba2a5 Date: Thu, 04 Sep 2003 02:12:35 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 889
diff changeset
484 *value = 1;
031e093ba2a5 Date: Thu, 04 Sep 2003 02:12:35 +0200
Sam Lantinga <slouken@libsdl.org>
parents: 889
diff changeset
485 break;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
486 default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
487 retval = -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
488 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
489 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
490 return retval;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
491 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
492
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
493 void WIN_GL_SwapBuffers(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
494 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
495 SwapBuffers(GL_hdc);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
496 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
497
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
498 void WIN_GL_UnloadLibrary(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
499 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
500 if ( this->gl_config.driver_loaded ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
501 FreeLibrary((HMODULE)this->gl_config.dll_handle);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
502
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
503 this->gl_data->wglGetProcAddress = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
504 this->gl_data->wglCreateContext = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
505 this->gl_data->wglDeleteContext = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
506 this->gl_data->wglMakeCurrent = NULL;
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
507 this->gl_data->wglChoosePixelFormatARB = NULL;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
508 this->gl_data->wglGetPixelFormatAttribivARB = NULL;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
509
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
510 this->gl_config.dll_handle = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
511 this->gl_config.driver_loaded = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
512 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
513 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
514
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
515 /* Passing a NULL path means load pointers from the application */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
516 int WIN_GL_LoadLibrary(_THIS, const char* path)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
517 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
518 HMODULE handle;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
519
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
520 if ( gl_active ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
521 SDL_SetError("OpenGL context already created");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
522 return -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
523 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
524
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
525 if ( path == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
526 path = DEFAULT_GL_DRIVER_PATH;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
527 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
528 handle = LoadLibrary(path);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
529 if ( handle == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
530 SDL_SetError("Could not load OpenGL library");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
531 return -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
532 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
533
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
534 /* Unload the old driver and reset the pointers */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
535 WIN_GL_UnloadLibrary(this);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
536
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
537 /* Load new function pointers */
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
538 memset(this->gl_data, 0, sizeof(*this->gl_data));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
539 this->gl_data->wglGetProcAddress = (void * (WINAPI *)(const char *))
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
540 GetProcAddress(handle, "wglGetProcAddress");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
541 this->gl_data->wglCreateContext = (HGLRC (WINAPI *)(HDC))
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
542 GetProcAddress(handle, "wglCreateContext");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
543 this->gl_data->wglDeleteContext = (BOOL (WINAPI *)(HGLRC))
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
544 GetProcAddress(handle, "wglDeleteContext");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
545 this->gl_data->wglMakeCurrent = (BOOL (WINAPI *)(HDC, HGLRC))
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
546 GetProcAddress(handle, "wglMakeCurrent");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
547
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
548 if ( (this->gl_data->wglGetProcAddress == NULL) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
549 (this->gl_data->wglCreateContext == NULL) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
550 (this->gl_data->wglDeleteContext == NULL) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
551 (this->gl_data->wglMakeCurrent == NULL) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
552 SDL_SetError("Could not retrieve OpenGL functions");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
553 FreeLibrary(handle);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
554 return -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
555 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
556
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
557 this->gl_config.dll_handle = handle;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
558 strcpy(this->gl_config.driver_path, path);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
559 this->gl_config.driver_loaded = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
560 return 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
561 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
562
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
563 void *WIN_GL_GetProcAddress(_THIS, const char* proc)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
564 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
565 void *func;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
566
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
567 /* This is to pick up extensions */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
568 func = this->gl_data->wglGetProcAddress(proc);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
569 if ( ! func ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
570 /* This is probably a normal GL function */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
571 func = GetProcAddress(this->gl_config.dll_handle, proc);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
572 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
573 return func;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
574 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
575
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
576 #endif /* HAVE_OPENGL */