Mercurial > sdl-ios-xcode
annotate src/video/wincommon/SDL_wingl.c @ 3889:67d518069d9a SDL-1.2
A few more AmigaOS things.
author | Ryan C. Gordon <icculus@icculus.org> |
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date | Sun, 29 Oct 2006 04:08:50 +0000 |
parents | 9d940db55a91 |
children | c121d94672cb 5c6e937518c6 |
rev | line source |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2006 Sam Lantinga |
0 | 4 |
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 |
0 | 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. |
0 | 9 |
10 This library is distributed in the hope that it will be useful, | |
11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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13 Lesser General Public License for more details. |
0 | 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 |
0 | 18 |
19 Sam Lantinga | |
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20 slouken@libsdl.org |
0 | 21 */ |
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22 #include "SDL_config.h" |
0 | 23 |
24 /* WGL implementation of SDL OpenGL support */ | |
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 |
0 | 29 #include "SDL_lowvideo.h" |
30 #include "SDL_wingl_c.h" | |
31 | |
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32 #if SDL_VIDEO_OPENGL |
0 | 33 #define DEFAULT_GL_DRIVER_PATH "OPENGL32.DLL" |
34 #endif | |
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 WIN_GL_ResetWindow(_THIS) |
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38 { |
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39 int status = 0; |
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40 |
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41 #ifndef _WIN32_WCE /* FIXME WinCE needs the UNICODE version of CreateWindow() */ |
1527 | 42 /* This doesn't work with DirectX code (see CVS comments) */ |
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43 /* If we were passed a window, then we can't create a new one */ |
1527 | 44 if ( !SDL_windowid && SDL_strcmp(this->name, "windib") == 0 ) { |
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45 /* Save the existing window attributes */ |
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46 LONG style; |
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47 RECT rect = { 0, 0, 0, 0 }; |
1480 | 48 style = GetWindowLong(SDL_Window, GWL_STYLE); |
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49 GetWindowRect(SDL_Window, &rect); |
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50 DestroyWindow(SDL_Window); |
1523 | 51 WIN_FlushMessageQueue(); |
52 | |
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53 SDL_Window = CreateWindow(SDL_Appname, SDL_Appname, |
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54 style, |
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55 rect.left, rect.top, |
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56 (rect.right-rect.left)+1, |
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57 (rect.top-rect.bottom)+1, |
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58 NULL, NULL, SDL_Instance, NULL); |
1523 | 59 WIN_FlushMessageQueue(); |
60 | |
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61 if ( SDL_Window ) { |
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62 this->SetCaption(this, this->wm_title, this->wm_icon); |
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63 } else { |
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64 SDL_SetError("Couldn't create window"); |
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65 status = -1; |
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66 } |
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67 } else |
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68 #endif /* !_WIN32_WCE */ |
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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 } |
0 | 75 |
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76 #if SDL_VIDEO_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 = SDL_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 = SDL_strstr(start, extension); |
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100 if (!where) break; |
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101 |
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102 terminator = where + SDL_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); |
1523 | 124 WIN_FlushMessageQueue(); |
125 | |
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126 hdc = GetDC(hwnd); |
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127 |
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128 pformat = ChoosePixelFormat(hdc, &GL_pfd); |
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129 SetPixelFormat(hdc, pformat, &GL_pfd); |
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130 |
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131 hglrc = this->gl_data->wglCreateContext(hdc); |
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132 if ( hglrc ) { |
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133 this->gl_data->wglMakeCurrent(hdc, hglrc); |
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134 } |
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135 |
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136 wglGetExtensionsStringARB = (const char * (WINAPI *)(HDC)) |
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137 this->gl_data->wglGetProcAddress("wglGetExtensionsStringARB"); |
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138 |
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139 if( wglGetExtensionsStringARB ) { |
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140 extensions = wglGetExtensionsStringARB(hdc); |
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141 } else { |
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142 extensions = NULL; |
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143 } |
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144 |
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145 this->gl_data->WGL_ARB_pixel_format = 0; |
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146 if( ExtensionSupported("WGL_ARB_pixel_format", extensions) ) { |
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147 this->gl_data->wglChoosePixelFormatARB = |
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148 (BOOL (WINAPI *)(HDC, const int *, const FLOAT *, UINT, int *, UINT *)) |
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149 this->gl_data->wglGetProcAddress("wglChoosePixelFormatARB"); |
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150 this->gl_data->wglGetPixelFormatAttribivARB = |
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151 (BOOL (WINAPI *)(HDC, int, int, UINT, const int *, int *)) |
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152 this->gl_data->wglGetProcAddress("wglGetPixelFormatAttribivARB"); |
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153 |
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154 if( (this->gl_data->wglChoosePixelFormatARB != NULL) && |
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155 (this->gl_data->wglGetPixelFormatAttribivARB != NULL) ) { |
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156 this->gl_data->WGL_ARB_pixel_format = 1; |
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157 } |
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158 } |
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159 |
671
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160 if ( hglrc ) { |
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161 this->gl_data->wglMakeCurrent(NULL, NULL); |
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162 this->gl_data->wglDeleteContext(hglrc); |
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163 } |
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164 ReleaseDC(hwnd, hdc); |
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165 DestroyWindow(hwnd); |
1523 | 166 WIN_FlushMessageQueue(); |
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167 } |
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168 |
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169 #endif /* SDL_VIDEO_OPENGL */ |
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170 |
0 | 171 int WIN_GL_SetupWindow(_THIS) |
172 { | |
173 int retval; | |
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174 #if SDL_VIDEO_OPENGL |
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175 int i; |
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176 unsigned int matching; |
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177 int iAttribs[64]; |
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178 int *iAttr; |
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179 float fAttribs[1] = { 0 }; |
1769 | 180 const GLubyte *(WINAPI *glGetStringFunc)(GLenum); |
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181 const char *wglext; |
0 | 182 |
183 /* load the gl driver from a default path */ | |
184 if ( ! this->gl_config.driver_loaded ) { | |
185 /* no driver has been loaded, use default (ourselves) */ | |
186 if ( WIN_GL_LoadLibrary(this, NULL) < 0 ) { | |
187 return(-1); | |
188 } | |
189 } | |
190 | |
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191 for ( i=0; ; ++i ) { |
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192 /* Get the window device context for our OpenGL drawing */ |
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193 GL_hdc = GetDC(SDL_Window); |
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194 if ( GL_hdc == NULL ) { |
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195 SDL_SetError("Unable to get DC for SDL_Window"); |
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196 return(-1); |
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197 } |
0 | 198 |
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199 /* Set up the pixel format descriptor with our needed format */ |
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200 SDL_memset(&GL_pfd, 0, sizeof(GL_pfd)); |
373
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201 GL_pfd.nSize = sizeof(GL_pfd); |
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202 GL_pfd.nVersion = 1; |
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203 GL_pfd.dwFlags = (PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL); |
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204 if ( this->gl_config.double_buffer ) { |
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205 GL_pfd.dwFlags |= PFD_DOUBLEBUFFER; |
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206 } |
450
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207 if ( this->gl_config.stereo ) { |
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208 GL_pfd.dwFlags |= PFD_STEREO; |
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209 } |
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210 GL_pfd.iPixelType = PFD_TYPE_RGBA; |
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211 GL_pfd.cColorBits = this->gl_config.buffer_size; |
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212 GL_pfd.cRedBits = this->gl_config.red_size; |
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213 GL_pfd.cGreenBits = this->gl_config.green_size; |
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214 GL_pfd.cBlueBits = this->gl_config.blue_size; |
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215 GL_pfd.cAlphaBits = this->gl_config.alpha_size; |
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216 GL_pfd.cAccumRedBits = this->gl_config.accum_red_size; |
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217 GL_pfd.cAccumGreenBits = this->gl_config.accum_green_size; |
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218 GL_pfd.cAccumBlueBits = this->gl_config.accum_blue_size; |
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219 GL_pfd.cAccumAlphaBits = this->gl_config.accum_alpha_size; |
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220 GL_pfd.cAccumBits = |
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221 (GL_pfd.cAccumRedBits + GL_pfd.cAccumGreenBits + |
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222 GL_pfd.cAccumBlueBits + GL_pfd.cAccumAlphaBits); |
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223 GL_pfd.cDepthBits = this->gl_config.depth_size; |
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224 GL_pfd.cStencilBits = this->gl_config.stencil_size; |
0 | 225 |
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226 /* initialize WGL_ARB_pixel_format */ |
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227 Init_WGL_ARB_extensions(this); |
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228 |
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229 /* setup WGL_ARB_pixel_format attribs */ |
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230 iAttr = &iAttribs[0]; |
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231 |
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232 *iAttr++ = WGL_DRAW_TO_WINDOW_ARB; |
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233 *iAttr++ = GL_TRUE; |
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234 *iAttr++ = WGL_ACCELERATION_ARB; |
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235 *iAttr++ = WGL_FULL_ACCELERATION_ARB; |
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236 *iAttr++ = WGL_RED_BITS_ARB; |
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237 *iAttr++ = this->gl_config.red_size; |
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238 *iAttr++ = WGL_GREEN_BITS_ARB; |
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239 *iAttr++ = this->gl_config.green_size; |
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240 *iAttr++ = WGL_BLUE_BITS_ARB; |
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241 *iAttr++ = this->gl_config.blue_size; |
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242 |
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243 if ( this->gl_config.alpha_size ) { |
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244 *iAttr++ = WGL_ALPHA_BITS_ARB; |
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245 *iAttr++ = this->gl_config.alpha_size; |
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246 } |
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247 |
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248 *iAttr++ = WGL_DOUBLE_BUFFER_ARB; |
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249 *iAttr++ = this->gl_config.double_buffer; |
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250 |
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251 *iAttr++ = WGL_DEPTH_BITS_ARB; |
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252 *iAttr++ = this->gl_config.depth_size; |
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253 |
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254 if ( this->gl_config.stencil_size ) { |
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255 *iAttr++ = WGL_STENCIL_BITS_ARB; |
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256 *iAttr++ = this->gl_config.stencil_size; |
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257 } |
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258 |
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259 if ( this->gl_config.accum_red_size ) { |
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260 *iAttr++ = WGL_ACCUM_RED_BITS_ARB; |
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261 *iAttr++ = this->gl_config.accum_red_size; |
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262 } |
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263 |
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264 if ( this->gl_config.accum_green_size ) { |
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265 *iAttr++ = WGL_ACCUM_GREEN_BITS_ARB; |
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266 *iAttr++ = this->gl_config.accum_green_size; |
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267 } |
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268 |
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269 if ( this->gl_config.accum_blue_size ) { |
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270 *iAttr++ = WGL_ACCUM_BLUE_BITS_ARB; |
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271 *iAttr++ = this->gl_config.accum_blue_size; |
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272 } |
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273 |
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274 if ( this->gl_config.accum_alpha_size ) { |
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275 *iAttr++ = WGL_ACCUM_ALPHA_BITS_ARB; |
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276 *iAttr++ = this->gl_config.accum_alpha_size; |
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277 } |
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278 |
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279 if ( this->gl_config.stereo ) { |
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280 *iAttr++ = WGL_STEREO_ARB; |
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281 *iAttr++ = GL_TRUE; |
655
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282 } |
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283 |
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Merged in Ryan's multisample code for MacOS, and changed the constants to match.
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284 if ( this->gl_config.multisamplebuffers ) { |
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285 *iAttr++ = WGL_SAMPLE_BUFFERS_ARB; |
656
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286 *iAttr++ = this->gl_config.multisamplebuffers; |
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287 } |
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288 |
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289 if ( this->gl_config.multisamplesamples ) { |
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290 *iAttr++ = WGL_SAMPLES_ARB; |
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291 *iAttr++ = this->gl_config.multisamplesamples; |
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292 } |
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293 |
1737 | 294 if ( this->gl_config.accelerated >= 0 ) { |
295 *iAttr++ = WGL_ACCELERATION_ARB; | |
296 *iAttr++ = (this->gl_config.accelerated ? WGL_GENERIC_ACCELERATION_ARB : WGL_NO_ACCELERATION_ARB); | |
297 } | |
298 | |
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299 *iAttr = 0; |
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300 |
373
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Fixed setting OpenGL mode multiple times on Windows
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301 /* Choose and set the closest available pixel format */ |
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302 if ( !this->gl_data->WGL_ARB_pixel_format || |
655
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303 !this->gl_data->wglChoosePixelFormatARB(GL_hdc, iAttribs, fAttribs, 1, &pixel_format, &matching) || |
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304 !matching ) { |
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305 pixel_format = ChoosePixelFormat(GL_hdc, &GL_pfd); |
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306 this->gl_data->WGL_ARB_pixel_format = 0; |
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307 } |
373
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308 if ( !pixel_format ) { |
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309 SDL_SetError("No matching GL pixel format available"); |
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310 return(-1); |
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311 } |
655
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312 if ( !SetPixelFormat(GL_hdc, pixel_format, &GL_pfd) ) { |
373
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313 if ( i == 0 ) { |
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314 /* First time through, try resetting the window */ |
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315 if ( WIN_GL_ResetWindow(this) < 0 ) { |
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316 return(-1); |
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317 } |
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318 continue; |
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319 } |
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320 SDL_SetError("Unable to set HDC pixel format"); |
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321 return(-1); |
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322 } |
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323 /* We either succeeded or failed by this point */ |
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324 break; |
0 | 325 } |
326 DescribePixelFormat(GL_hdc, pixel_format, sizeof(GL_pfd), &GL_pfd); | |
327 | |
328 GL_hrc = this->gl_data->wglCreateContext(GL_hdc); | |
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329 if ( GL_hrc == NULL ) { |
0 | 330 SDL_SetError("Unable to create GL context"); |
331 return(-1); | |
332 } | |
1736
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333 if ( WIN_GL_MakeCurrent(this) < 0 ) { |
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334 return(-1); |
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335 } |
0 | 336 gl_active = 1; |
1736
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337 |
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338 /* Vsync control under Windows. Checking glGetString here is |
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339 * somewhat a documented and reliable hack - it was originally |
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340 * as a feature added by mistake, but since so many people rely |
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341 * on it, it will not be removed. strstr should be safe here.*/ |
1754
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342 glGetStringFunc = WIN_GL_GetProcAddress(this, "glGetString"); |
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343 if ( glGetStringFunc ) { |
1757
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Yeah, that's what I meant. :)
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344 wglext = (const char *)glGetStringFunc(GL_EXTENSIONS); |
1754
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345 } else { |
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346 /* Uh oh, something is seriously wrong here... */ |
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347 wglext = NULL; |
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348 } |
1880 | 349 if ( wglext && SDL_strstr(wglext, "WGL_EXT_swap_control") ) { |
350 this->gl_data->wglSwapIntervalEXT = WIN_GL_GetProcAddress(this, "wglSwapIntervalEXT"); | |
351 this->gl_data->wglGetSwapIntervalEXT = WIN_GL_GetProcAddress(this, "wglGetSwapIntervalEXT"); | |
352 } else { | |
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353 this->gl_data->wglSwapIntervalEXT = NULL; |
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354 this->gl_data->wglGetSwapIntervalEXT = NULL; |
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355 } |
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356 if ( this->gl_config.swap_control >= 0 ) { |
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357 if ( this->gl_data->wglSwapIntervalEXT ) { |
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358 this->gl_data->wglSwapIntervalEXT(this->gl_config.swap_control); |
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359 } |
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360 } |
0 | 361 #else |
362 SDL_SetError("WIN driver not configured with OpenGL"); | |
363 #endif | |
364 if ( gl_active ) { | |
365 retval = 0; | |
366 } else { | |
367 retval = -1; | |
368 } | |
369 return(retval); | |
370 } | |
371 | |
372 void WIN_GL_ShutDown(_THIS) | |
373 { | |
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New configure-based build system. Still work in progress, but much improved
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374 #if SDL_VIDEO_OPENGL |
0 | 375 /* Clean up OpenGL */ |
376 if ( GL_hrc ) { | |
377 this->gl_data->wglMakeCurrent(NULL, NULL); | |
378 this->gl_data->wglDeleteContext(GL_hrc); | |
379 GL_hrc = NULL; | |
380 } | |
381 if ( GL_hdc ) { | |
382 ReleaseDC(SDL_Window, GL_hdc); | |
383 GL_hdc = NULL; | |
384 } | |
385 gl_active = 0; | |
386 | |
387 WIN_GL_UnloadLibrary(this); | |
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388 #endif /* SDL_VIDEO_OPENGL */ |
0 | 389 } |
390 | |
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391 #if SDL_VIDEO_OPENGL |
0 | 392 |
393 /* Make the current context active */ | |
394 int WIN_GL_MakeCurrent(_THIS) | |
395 { | |
396 int retval; | |
397 | |
398 retval = 0; | |
399 if ( ! this->gl_data->wglMakeCurrent(GL_hdc, GL_hrc) ) { | |
400 SDL_SetError("Unable to make GL context current"); | |
401 retval = -1; | |
402 } | |
403 return(retval); | |
404 } | |
405 | |
406 /* Get attribute data from glX. */ | |
407 int WIN_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value) | |
408 { | |
409 int retval; | |
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410 |
1315
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Merged useful fixes from 1.3 branch
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411 if ( this->gl_data->WGL_ARB_pixel_format ) { |
655
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412 int wgl_attrib; |
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413 |
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414 switch(attrib) { |
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415 case SDL_GL_RED_SIZE: |
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416 wgl_attrib = WGL_RED_BITS_ARB; |
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417 break; |
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418 case SDL_GL_GREEN_SIZE: |
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419 wgl_attrib = WGL_GREEN_BITS_ARB; |
9c42ee1b7d77
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420 break; |
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421 case SDL_GL_BLUE_SIZE: |
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422 wgl_attrib = WGL_BLUE_BITS_ARB; |
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423 break; |
9c42ee1b7d77
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424 case SDL_GL_ALPHA_SIZE: |
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425 wgl_attrib = WGL_ALPHA_BITS_ARB; |
9c42ee1b7d77
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426 break; |
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427 case SDL_GL_DOUBLEBUFFER: |
9c42ee1b7d77
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428 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
|
429 break; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
430 case SDL_GL_BUFFER_SIZE: |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
431 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
|
432 break; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
433 case SDL_GL_DEPTH_SIZE: |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
434 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
|
435 break; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
436 case SDL_GL_STENCIL_SIZE: |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
437 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
|
438 break; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
439 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
|
440 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
|
441 break; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
442 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
|
443 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
|
444 break; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
445 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
|
446 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
|
447 break; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
448 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
|
449 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
|
450 break; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
451 case SDL_GL_STEREO: |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
452 wgl_attrib = WGL_STEREO_ARB; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
453 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
|
454 case SDL_GL_MULTISAMPLEBUFFERS: |
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
455 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
|
456 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
|
457 case SDL_GL_MULTISAMPLESAMPLES: |
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
458 wgl_attrib = WGL_SAMPLES_ARB; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
459 break; |
1737 | 460 case SDL_GL_ACCELERATED_VISUAL: |
461 wgl_attrib = WGL_ACCELERATION_ARB; | |
462 this->gl_data->wglGetPixelFormatAttribivARB(GL_hdc, pixel_format, 0, 1, &wgl_attrib, value); | |
463 if ( *value == WGL_NO_ACCELERATION_ARB ) { | |
464 *value = SDL_FALSE; | |
465 } else { | |
466 *value = SDL_TRUE; | |
467 } | |
468 return 0; | |
469 break; | |
1736
3b2a92126f4d
Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents:
1527
diff
changeset
|
470 case SDL_GL_SWAP_CONTROL: |
3b2a92126f4d
Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents:
1527
diff
changeset
|
471 if ( this->gl_data->wglGetSwapIntervalEXT ) { |
1880 | 472 *value = this->gl_data->wglGetSwapIntervalEXT(); |
473 return 0; | |
1736
3b2a92126f4d
Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents:
1527
diff
changeset
|
474 } else { |
3b2a92126f4d
Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents:
1527
diff
changeset
|
475 return -1; |
3b2a92126f4d
Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents:
1527
diff
changeset
|
476 } |
1880 | 477 break; |
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
478 default: |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
479 return(-1); |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
480 } |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
481 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
|
482 |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
483 return 0; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
484 } |
0 | 485 |
486 retval = 0; | |
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
487 switch ( attrib ) { |
0 | 488 case SDL_GL_RED_SIZE: |
489 *value = GL_pfd.cRedBits; | |
490 break; | |
491 case SDL_GL_GREEN_SIZE: | |
492 *value = GL_pfd.cGreenBits; | |
493 break; | |
494 case SDL_GL_BLUE_SIZE: | |
495 *value = GL_pfd.cBlueBits; | |
496 break; | |
497 case SDL_GL_ALPHA_SIZE: | |
498 *value = GL_pfd.cAlphaBits; | |
499 break; | |
500 case SDL_GL_DOUBLEBUFFER: | |
501 if ( GL_pfd.dwFlags & PFD_DOUBLEBUFFER ) { | |
502 *value = 1; | |
503 } else { | |
504 *value = 0; | |
505 } | |
506 break; | |
507 case SDL_GL_BUFFER_SIZE: | |
508 *value = GL_pfd.cColorBits; | |
509 break; | |
510 case SDL_GL_DEPTH_SIZE: | |
511 *value = GL_pfd.cDepthBits; | |
512 break; | |
513 case SDL_GL_STENCIL_SIZE: | |
514 *value = GL_pfd.cStencilBits; | |
515 break; | |
516 case SDL_GL_ACCUM_RED_SIZE: | |
517 *value = GL_pfd.cAccumRedBits; | |
518 break; | |
519 case SDL_GL_ACCUM_GREEN_SIZE: | |
520 *value = GL_pfd.cAccumGreenBits; | |
521 break; | |
522 case SDL_GL_ACCUM_BLUE_SIZE: | |
523 *value = GL_pfd.cAccumBlueBits; | |
524 break; | |
525 case SDL_GL_ACCUM_ALPHA_SIZE: | |
526 *value = GL_pfd.cAccumAlphaBits; | |
527 break; | |
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
373
diff
changeset
|
528 case SDL_GL_STEREO: |
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
373
diff
changeset
|
529 if ( GL_pfd.dwFlags & PFD_STEREO ) { |
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
373
diff
changeset
|
530 *value = 1; |
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
373
diff
changeset
|
531 } else { |
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
373
diff
changeset
|
532 *value = 0; |
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
373
diff
changeset
|
533 } |
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
373
diff
changeset
|
534 break; |
1261
031e093ba2a5
Date: Thu, 04 Sep 2003 02:12:35 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
889
diff
changeset
|
535 case SDL_GL_MULTISAMPLEBUFFERS: |
031e093ba2a5
Date: Thu, 04 Sep 2003 02:12:35 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
889
diff
changeset
|
536 *value = 0; |
031e093ba2a5
Date: Thu, 04 Sep 2003 02:12:35 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
889
diff
changeset
|
537 break; |
031e093ba2a5
Date: Thu, 04 Sep 2003 02:12:35 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
889
diff
changeset
|
538 case SDL_GL_MULTISAMPLESAMPLES: |
031e093ba2a5
Date: Thu, 04 Sep 2003 02:12:35 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
889
diff
changeset
|
539 *value = 1; |
031e093ba2a5
Date: Thu, 04 Sep 2003 02:12:35 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
889
diff
changeset
|
540 break; |
1880 | 541 case SDL_GL_SWAP_CONTROL: |
542 if ( this->gl_data->wglGetSwapIntervalEXT ) { | |
543 *value = this->gl_data->wglGetSwapIntervalEXT(); | |
544 return 0; | |
545 } else { | |
546 return -1; | |
547 } | |
548 break; | |
0 | 549 default: |
550 retval = -1; | |
551 break; | |
552 } | |
553 return retval; | |
554 } | |
555 | |
556 void WIN_GL_SwapBuffers(_THIS) | |
557 { | |
558 SwapBuffers(GL_hdc); | |
559 } | |
560 | |
561 void WIN_GL_UnloadLibrary(_THIS) | |
562 { | |
563 if ( this->gl_config.driver_loaded ) { | |
564 FreeLibrary((HMODULE)this->gl_config.dll_handle); | |
565 | |
566 this->gl_data->wglGetProcAddress = NULL; | |
567 this->gl_data->wglCreateContext = NULL; | |
568 this->gl_data->wglDeleteContext = NULL; | |
569 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
|
570 this->gl_data->wglChoosePixelFormatARB = NULL; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
571 this->gl_data->wglGetPixelFormatAttribivARB = NULL; |
1736
3b2a92126f4d
Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents:
1527
diff
changeset
|
572 this->gl_data->wglSwapIntervalEXT = NULL; |
3b2a92126f4d
Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents:
1527
diff
changeset
|
573 this->gl_data->wglGetSwapIntervalEXT = NULL; |
0 | 574 |
575 this->gl_config.dll_handle = NULL; | |
576 this->gl_config.driver_loaded = 0; | |
577 } | |
578 } | |
579 | |
580 /* Passing a NULL path means load pointers from the application */ | |
581 int WIN_GL_LoadLibrary(_THIS, const char* path) | |
582 { | |
583 HMODULE handle; | |
584 | |
585 if ( gl_active ) { | |
586 SDL_SetError("OpenGL context already created"); | |
587 return -1; | |
588 } | |
589 | |
590 if ( path == NULL ) { | |
591 path = DEFAULT_GL_DRIVER_PATH; | |
592 } | |
593 handle = LoadLibrary(path); | |
594 if ( handle == NULL ) { | |
595 SDL_SetError("Could not load OpenGL library"); | |
596 return -1; | |
597 } | |
598 | |
599 /* Unload the old driver and reset the pointers */ | |
600 WIN_GL_UnloadLibrary(this); | |
601 | |
602 /* Load new function pointers */ | |
1336
3692456e7b0f
Use SDL_ prefixed versions of C library functions.
Sam Lantinga <slouken@libsdl.org>
parents:
1330
diff
changeset
|
603 SDL_memset(this->gl_data, 0, sizeof(*this->gl_data)); |
0 | 604 this->gl_data->wglGetProcAddress = (void * (WINAPI *)(const char *)) |
605 GetProcAddress(handle, "wglGetProcAddress"); | |
606 this->gl_data->wglCreateContext = (HGLRC (WINAPI *)(HDC)) | |
607 GetProcAddress(handle, "wglCreateContext"); | |
608 this->gl_data->wglDeleteContext = (BOOL (WINAPI *)(HGLRC)) | |
609 GetProcAddress(handle, "wglDeleteContext"); | |
610 this->gl_data->wglMakeCurrent = (BOOL (WINAPI *)(HDC, HGLRC)) | |
611 GetProcAddress(handle, "wglMakeCurrent"); | |
1736
3b2a92126f4d
Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents:
1527
diff
changeset
|
612 this->gl_data->wglSwapIntervalEXT = (void (WINAPI *)(int)) |
3b2a92126f4d
Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents:
1527
diff
changeset
|
613 GetProcAddress(handle, "wglSwapIntervalEXT"); |
3b2a92126f4d
Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents:
1527
diff
changeset
|
614 this->gl_data->wglGetSwapIntervalEXT = (int (WINAPI *)(void)) |
3b2a92126f4d
Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents:
1527
diff
changeset
|
615 GetProcAddress(handle, "wglGetSwapIntervalEXT"); |
0 | 616 |
617 if ( (this->gl_data->wglGetProcAddress == NULL) || | |
618 (this->gl_data->wglCreateContext == NULL) || | |
619 (this->gl_data->wglDeleteContext == NULL) || | |
620 (this->gl_data->wglMakeCurrent == NULL) ) { | |
621 SDL_SetError("Could not retrieve OpenGL functions"); | |
622 FreeLibrary(handle); | |
623 return -1; | |
624 } | |
625 | |
626 this->gl_config.dll_handle = handle; | |
1379
c0a74f199ecf
Use only safe string functions
Sam Lantinga <slouken@libsdl.org>
parents:
1361
diff
changeset
|
627 SDL_strlcpy(this->gl_config.driver_path, path, SDL_arraysize(this->gl_config.driver_path)); |
0 | 628 this->gl_config.driver_loaded = 1; |
629 return 0; | |
630 } | |
631 | |
632 void *WIN_GL_GetProcAddress(_THIS, const char* proc) | |
633 { | |
634 void *func; | |
635 | |
636 /* This is to pick up extensions */ | |
637 func = this->gl_data->wglGetProcAddress(proc); | |
638 if ( ! func ) { | |
639 /* This is probably a normal GL function */ | |
640 func = GetProcAddress(this->gl_config.dll_handle, proc); | |
641 } | |
642 return func; | |
643 } | |
644 | |
1361
19418e4422cb
New configure-based build system. Still work in progress, but much improved
Sam Lantinga <slouken@libsdl.org>
parents:
1358
diff
changeset
|
645 #endif /* SDL_VIDEO_OPENGL */ |