Mercurial > sdl-ios-xcode
annotate src/video/wincommon/SDL_wingl.c @ 1312:c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
I batch edited these files, so please let me know if I've accidentally removed anybody's
credit here.
author | Sam Lantinga <slouken@libsdl.org> |
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date | Wed, 01 Feb 2006 06:32:25 +0000 |
parents | f61f045343d3 |
children | e94b0d7c33bc |
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 */ |
22 | |
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23 #include <string.h> |
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24 |
0 | 25 /* WGL implementation of SDL OpenGL support */ |
26 | |
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27 #ifdef HAVE_OPENGL |
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28 #include "SDL_opengl.h" |
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29 #endif |
0 | 30 #include "SDL_error.h" |
31 #include "SDL_lowvideo.h" | |
32 #include "SDL_wingl_c.h" | |
33 | |
34 #ifdef HAVE_OPENGL | |
35 #define DEFAULT_GL_DRIVER_PATH "OPENGL32.DLL" | |
36 #endif | |
37 | |
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38 /* If setting the HDC fails, we may need to recreate the window (MSDN) */ |
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39 static int WIN_GL_ResetWindow(_THIS) |
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40 { |
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41 int status = 0; |
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42 |
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43 #if 0 /* This doesn't work with DirectX code (see CVS comments) */ |
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44 #ifndef _WIN32_WCE /* FIXME WinCE needs the UNICODE version of CreateWindow() */ |
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45 /* If we were passed a window, then we can't create a new one */ |
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46 if ( !SDL_windowid ) { |
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47 /* Save the existing window attributes */ |
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48 LONG style; |
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49 RECT rect = { 0, 0, 0, 0 }; |
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50 style = GetWindowLong(SDL_Window, GWL_STYLE); |
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51 GetWindowRect(SDL_Window, &rect); |
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52 DestroyWindow(SDL_Window); |
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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); |
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59 if ( SDL_Window ) { |
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60 this->SetCaption(this, this->wm_title, this->wm_icon); |
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61 } else { |
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62 SDL_SetError("Couldn't create window"); |
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63 status = -1; |
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64 } |
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65 } else |
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66 #endif /* !_WIN32_WCE */ |
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67 #endif |
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68 { |
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69 SDL_SetError("Unable to reset window for OpenGL context"); |
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70 status = -1; |
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71 } |
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72 return(status); |
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73 } |
0 | 74 |
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75 #ifdef HAVE_OPENGL |
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76 static void Init_WGL_ARB_extensions(_THIS) |
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77 { |
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78 HWND hwnd; |
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79 HDC hdc; |
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80 HGLRC hglrc; |
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81 int pformat; |
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82 const char * (WINAPI *wglGetExtensionsStringARB)(HDC) = 0; |
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83 |
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84 hwnd = CreateWindow(SDL_Appname, SDL_Appname, WS_POPUP | WS_DISABLED, |
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85 0, 0, 10, 10, |
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86 NULL, NULL, SDL_Instance,NULL); |
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87 hdc = GetDC(hwnd); |
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88 |
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89 pformat = ChoosePixelFormat(hdc, &GL_pfd); |
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90 SetPixelFormat(hdc, pformat, &GL_pfd); |
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91 |
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92 hglrc = this->gl_data->wglCreateContext(hdc); |
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93 if ( hglrc ) { |
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94 this->gl_data->wglMakeCurrent(hdc, hglrc); |
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95 } |
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96 |
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97 wglGetExtensionsStringARB = (const char * (WINAPI *)(HDC)) |
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98 this->gl_data->wglGetProcAddress("wglGetExtensionsStringARB"); |
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99 |
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100 if(wglGetExtensionsStringARB && strstr(wglGetExtensionsStringARB(hdc),"WGL_ARB_pixel_format")) { |
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101 this->gl_data->wglChoosePixelFormatARB = |
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102 (BOOL (WINAPI *)(HDC, const int *, const FLOAT *, UINT, int *, UINT *)) |
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103 this->gl_data->wglGetProcAddress("wglChoosePixelFormatARB"); |
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104 this->gl_data->wglGetPixelFormatAttribivARB = |
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105 (BOOL (WINAPI *)(HDC, int, int, UINT, const int *, int *)) |
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106 this->gl_data->wglGetProcAddress("wglGetPixelFormatAttribivARB"); |
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107 |
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108 if( (this->gl_data->wglChoosePixelFormatARB != NULL) && |
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109 (this->gl_data->wglGetPixelFormatAttribivARB != NULL) ) |
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110 this->gl_data->wgl_arb_pixel_format = 1; |
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111 else |
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112 this->gl_data->wgl_arb_pixel_format = 0; |
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113 } else { |
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114 this->gl_data->wgl_arb_pixel_format = 0; |
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115 } |
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116 |
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117 if ( hglrc ) { |
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118 this->gl_data->wglMakeCurrent(NULL, NULL); |
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119 this->gl_data->wglDeleteContext(hglrc); |
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120 } |
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121 ReleaseDC(hwnd, hdc); |
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122 DestroyWindow(hwnd); |
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123 } |
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124 #endif /* !HAVE_OPENGL */ |
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125 |
0 | 126 int WIN_GL_SetupWindow(_THIS) |
127 { | |
128 int retval; | |
129 #ifdef HAVE_OPENGL | |
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130 int i; |
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131 unsigned int matching; |
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132 int iAttribs[64]; |
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133 int *iAttr; |
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134 float fAttribs[1] = { 0 }; |
0 | 135 |
136 /* load the gl driver from a default path */ | |
137 if ( ! this->gl_config.driver_loaded ) { | |
138 /* no driver has been loaded, use default (ourselves) */ | |
139 if ( WIN_GL_LoadLibrary(this, NULL) < 0 ) { | |
140 return(-1); | |
141 } | |
142 } | |
143 | |
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144 for ( i=0; ; ++i ) { |
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145 /* Get the window device context for our OpenGL drawing */ |
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146 GL_hdc = GetDC(SDL_Window); |
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147 if ( GL_hdc == NULL ) { |
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148 SDL_SetError("Unable to get DC for SDL_Window"); |
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149 return(-1); |
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150 } |
0 | 151 |
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152 /* Set up the pixel format descriptor with our needed format */ |
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153 memset(&GL_pfd, 0, sizeof(GL_pfd)); |
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154 GL_pfd.nSize = sizeof(GL_pfd); |
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155 GL_pfd.nVersion = 1; |
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156 GL_pfd.dwFlags = (PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL); |
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157 if ( this->gl_config.double_buffer ) { |
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158 GL_pfd.dwFlags |= PFD_DOUBLEBUFFER; |
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159 } |
450
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160 if ( this->gl_config.stereo ) { |
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161 GL_pfd.dwFlags |= PFD_STEREO; |
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162 } |
373
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163 GL_pfd.iPixelType = PFD_TYPE_RGBA; |
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164 GL_pfd.cColorBits = this->gl_config.buffer_size; |
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165 GL_pfd.cRedBits = this->gl_config.red_size; |
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166 GL_pfd.cGreenBits = this->gl_config.green_size; |
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167 GL_pfd.cBlueBits = this->gl_config.blue_size; |
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168 GL_pfd.cAlphaBits = this->gl_config.alpha_size; |
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169 GL_pfd.cAccumRedBits = this->gl_config.accum_red_size; |
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170 GL_pfd.cAccumGreenBits = this->gl_config.accum_green_size; |
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171 GL_pfd.cAccumBlueBits = this->gl_config.accum_blue_size; |
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172 GL_pfd.cAccumAlphaBits = this->gl_config.accum_alpha_size; |
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173 GL_pfd.cAccumBits = |
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174 (GL_pfd.cAccumRedBits + GL_pfd.cAccumGreenBits + |
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175 GL_pfd.cAccumBlueBits + GL_pfd.cAccumAlphaBits); |
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176 GL_pfd.cDepthBits = this->gl_config.depth_size; |
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177 GL_pfd.cStencilBits = this->gl_config.stencil_size; |
0 | 178 |
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179 /* initialize WGL_ARB_pixel_format */ |
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180 Init_WGL_ARB_extensions(this); |
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181 |
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182 /* setup WGL_ARB_pixel_format attribs */ |
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183 iAttr = &iAttribs[0]; |
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184 |
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185 *iAttr++ = WGL_DRAW_TO_WINDOW_ARB; |
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186 *iAttr++ = GL_TRUE; |
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187 *iAttr++ = WGL_ACCELERATION_ARB; |
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188 *iAttr++ = WGL_FULL_ACCELERATION_ARB; |
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189 *iAttr++ = WGL_RED_BITS_ARB; |
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190 *iAttr++ = this->gl_config.red_size; |
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191 *iAttr++ = WGL_GREEN_BITS_ARB; |
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192 *iAttr++ = this->gl_config.green_size; |
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193 *iAttr++ = WGL_BLUE_BITS_ARB; |
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194 *iAttr++ = this->gl_config.blue_size; |
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195 |
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196 if ( this->gl_config.alpha_size ) { |
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197 *iAttr++ = WGL_ALPHA_BITS_ARB; |
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198 *iAttr++ = this->gl_config.alpha_size; |
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199 } |
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200 |
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201 if ( this->gl_config.double_buffer ) { |
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202 *iAttr ++ = WGL_DOUBLE_BUFFER_ARB; |
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203 *iAttr ++ = GL_TRUE; |
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204 } |
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205 |
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206 *iAttr++ = WGL_DEPTH_BITS_ARB; |
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207 *iAttr++ = this->gl_config.depth_size; |
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208 |
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209 if ( this->gl_config.stencil_size ) { |
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210 *iAttr++ = WGL_STENCIL_BITS_ARB; |
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211 *iAttr++ = this->gl_config.stencil_size; |
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212 } |
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213 |
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214 if ( this->gl_config.accum_red_size ) { |
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215 *iAttr++ = WGL_ACCUM_RED_BITS_ARB; |
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216 *iAttr++ = this->gl_config.accum_red_size; |
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217 } |
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218 |
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219 if ( this->gl_config.accum_green_size ) { |
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220 *iAttr++ = WGL_ACCUM_GREEN_BITS_ARB; |
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221 *iAttr++ = this->gl_config.accum_green_size; |
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222 } |
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223 |
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224 if ( this->gl_config.accum_blue_size ) { |
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225 *iAttr++ = WGL_ACCUM_BLUE_BITS_ARB; |
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226 *iAttr++ = this->gl_config.accum_blue_size; |
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227 } |
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228 |
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229 if ( this->gl_config.accum_alpha_size ) { |
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230 *iAttr++ = WGL_ACCUM_ALPHA_BITS_ARB; |
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231 *iAttr++ = this->gl_config.accum_alpha_size; |
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232 } |
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233 |
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234 if ( this->gl_config.stereo ) { |
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235 *iAttr++ = WGL_STEREO_ARB; |
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236 *iAttr++ = this->gl_config.stereo; |
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237 } |
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238 |
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239 if ( this->gl_config.multisamplebuffers ) { |
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240 *iAttr++ = WGL_SAMPLE_BUFFERS_ARB; |
656
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241 *iAttr++ = this->gl_config.multisamplebuffers; |
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242 } |
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243 |
656
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244 if ( this->gl_config.multisamplesamples ) { |
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245 *iAttr++ = WGL_SAMPLES_ARB; |
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246 *iAttr++ = this->gl_config.multisamplesamples; |
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247 } |
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248 |
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249 *iAttr = 0; |
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250 |
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251 /* Choose and set the closest available pixel format */ |
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252 if ( !this->gl_data->wgl_arb_pixel_format || |
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253 !this->gl_data->wglChoosePixelFormatARB(GL_hdc, iAttribs, fAttribs, 1, &pixel_format, &matching) || |
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254 !matching ) { |
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255 pixel_format = ChoosePixelFormat(GL_hdc, &GL_pfd); |
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256 this->gl_data->wgl_arb_pixel_format = 0; |
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257 } |
373
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Fixed setting OpenGL mode multiple times on Windows
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258 if ( !pixel_format ) { |
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Fixed setting OpenGL mode multiple times on Windows
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259 SDL_SetError("No matching GL pixel format available"); |
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Fixed setting OpenGL mode multiple times on Windows
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260 return(-1); |
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Fixed setting OpenGL mode multiple times on Windows
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261 } |
655
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262 if ( !SetPixelFormat(GL_hdc, pixel_format, &GL_pfd) ) { |
373
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Fixed setting OpenGL mode multiple times on Windows
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263 if ( i == 0 ) { |
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Fixed setting OpenGL mode multiple times on Windows
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264 /* First time through, try resetting the window */ |
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Fixed setting OpenGL mode multiple times on Windows
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265 if ( WIN_GL_ResetWindow(this) < 0 ) { |
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Fixed setting OpenGL mode multiple times on Windows
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266 return(-1); |
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Fixed setting OpenGL mode multiple times on Windows
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267 } |
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Fixed setting OpenGL mode multiple times on Windows
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268 continue; |
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Fixed setting OpenGL mode multiple times on Windows
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269 } |
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Fixed setting OpenGL mode multiple times on Windows
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270 SDL_SetError("Unable to set HDC pixel format"); |
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Fixed setting OpenGL mode multiple times on Windows
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271 return(-1); |
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Fixed setting OpenGL mode multiple times on Windows
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272 } |
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Fixed setting OpenGL mode multiple times on Windows
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273 /* We either succeeded or failed by this point */ |
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Fixed setting OpenGL mode multiple times on Windows
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274 break; |
0 | 275 } |
276 DescribePixelFormat(GL_hdc, pixel_format, sizeof(GL_pfd), &GL_pfd); | |
277 | |
278 GL_hrc = this->gl_data->wglCreateContext(GL_hdc); | |
655
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279 if ( GL_hrc == NULL ) { |
0 | 280 SDL_SetError("Unable to create GL context"); |
281 return(-1); | |
282 } | |
283 gl_active = 1; | |
284 #else | |
285 SDL_SetError("WIN driver not configured with OpenGL"); | |
286 #endif | |
287 if ( gl_active ) { | |
288 retval = 0; | |
289 } else { | |
290 retval = -1; | |
291 } | |
292 return(retval); | |
293 } | |
294 | |
295 void WIN_GL_ShutDown(_THIS) | |
296 { | |
297 #ifdef HAVE_OPENGL | |
298 /* Clean up OpenGL */ | |
299 if ( GL_hrc ) { | |
300 this->gl_data->wglMakeCurrent(NULL, NULL); | |
301 this->gl_data->wglDeleteContext(GL_hrc); | |
302 GL_hrc = NULL; | |
303 } | |
304 if ( GL_hdc ) { | |
305 ReleaseDC(SDL_Window, GL_hdc); | |
306 GL_hdc = NULL; | |
307 } | |
308 gl_active = 0; | |
309 | |
310 WIN_GL_UnloadLibrary(this); | |
311 #endif /* HAVE_OPENGL */ | |
312 } | |
313 | |
314 #ifdef HAVE_OPENGL | |
315 | |
316 /* Make the current context active */ | |
317 int WIN_GL_MakeCurrent(_THIS) | |
318 { | |
319 int retval; | |
320 | |
321 retval = 0; | |
322 if ( ! this->gl_data->wglMakeCurrent(GL_hdc, GL_hrc) ) { | |
323 SDL_SetError("Unable to make GL context current"); | |
324 retval = -1; | |
325 } | |
326 return(retval); | |
327 } | |
328 | |
329 /* Get attribute data from glX. */ | |
330 int WIN_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value) | |
331 { | |
332 int retval; | |
655
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333 |
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334 if ( this->gl_data->wgl_arb_pixel_format ) { |
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335 int wgl_attrib; |
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336 |
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337 switch(attrib) { |
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338 case SDL_GL_RED_SIZE: |
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339 wgl_attrib = WGL_RED_BITS_ARB; |
9c42ee1b7d77
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340 break; |
9c42ee1b7d77
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341 case SDL_GL_GREEN_SIZE: |
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342 wgl_attrib = WGL_GREEN_BITS_ARB; |
9c42ee1b7d77
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343 break; |
9c42ee1b7d77
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344 case SDL_GL_BLUE_SIZE: |
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345 wgl_attrib = WGL_BLUE_BITS_ARB; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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346 break; |
9c42ee1b7d77
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347 case SDL_GL_ALPHA_SIZE: |
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348 wgl_attrib = WGL_ALPHA_BITS_ARB; |
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349 break; |
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350 case SDL_GL_DOUBLEBUFFER: |
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351 wgl_attrib = WGL_DOUBLE_BUFFER_ARB; |
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Date: Thu, 24 Apr 2003 15:13:47 -0400
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352 break; |
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353 case SDL_GL_BUFFER_SIZE: |
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354 wgl_attrib = WGL_COLOR_BITS_ARB; |
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355 break; |
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356 case SDL_GL_DEPTH_SIZE: |
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357 wgl_attrib = WGL_DEPTH_BITS_ARB; |
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358 break; |
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359 case SDL_GL_STENCIL_SIZE: |
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360 wgl_attrib = WGL_STENCIL_BITS_ARB; |
9c42ee1b7d77
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361 break; |
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362 case SDL_GL_ACCUM_RED_SIZE: |
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363 wgl_attrib = WGL_ACCUM_RED_BITS_ARB; |
9c42ee1b7d77
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364 break; |
9c42ee1b7d77
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365 case SDL_GL_ACCUM_GREEN_SIZE: |
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366 wgl_attrib = WGL_ACCUM_GREEN_BITS_ARB; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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367 break; |
9c42ee1b7d77
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368 case SDL_GL_ACCUM_BLUE_SIZE: |
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369 wgl_attrib = WGL_ACCUM_BLUE_BITS_ARB; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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370 break; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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371 case SDL_GL_ACCUM_ALPHA_SIZE: |
9c42ee1b7d77
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372 wgl_attrib = WGL_ACCUM_ALPHA_BITS_ARB; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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373 break; |
9c42ee1b7d77
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374 case SDL_GL_STEREO: |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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375 wgl_attrib = WGL_STEREO_ARB; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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|
376 break; |
656
864e2d2a9a55
Merged in Ryan's multisample code for MacOS, and changed the constants to match.
Sam Lantinga <slouken@libsdl.org>
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655
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|
377 case SDL_GL_MULTISAMPLEBUFFERS: |
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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378 wgl_attrib = WGL_SAMPLE_BUFFERS_ARB; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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|
379 break; |
656
864e2d2a9a55
Merged in Ryan's multisample code for MacOS, and changed the constants to match.
Sam Lantinga <slouken@libsdl.org>
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|
380 case SDL_GL_MULTISAMPLESAMPLES: |
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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381 wgl_attrib = WGL_SAMPLES_ARB; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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|
382 break; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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|
383 default: |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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|
384 return(-1); |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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|
385 } |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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|
386 this->gl_data->wglGetPixelFormatAttribivARB(GL_hdc, pixel_format, 0, 1, &wgl_attrib, value); |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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|
387 |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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|
388 return 0; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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|
389 } |
0 | 390 |
391 retval = 0; | |
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
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|
392 switch ( attrib ) { |
0 | 393 case SDL_GL_RED_SIZE: |
394 *value = GL_pfd.cRedBits; | |
395 break; | |
396 case SDL_GL_GREEN_SIZE: | |
397 *value = GL_pfd.cGreenBits; | |
398 break; | |
399 case SDL_GL_BLUE_SIZE: | |
400 *value = GL_pfd.cBlueBits; | |
401 break; | |
402 case SDL_GL_ALPHA_SIZE: | |
403 *value = GL_pfd.cAlphaBits; | |
404 break; | |
405 case SDL_GL_DOUBLEBUFFER: | |
406 if ( GL_pfd.dwFlags & PFD_DOUBLEBUFFER ) { | |
407 *value = 1; | |
408 } else { | |
409 *value = 0; | |
410 } | |
411 break; | |
412 case SDL_GL_BUFFER_SIZE: | |
413 *value = GL_pfd.cColorBits; | |
414 break; | |
415 case SDL_GL_DEPTH_SIZE: | |
416 *value = GL_pfd.cDepthBits; | |
417 break; | |
418 case SDL_GL_STENCIL_SIZE: | |
419 *value = GL_pfd.cStencilBits; | |
420 break; | |
421 case SDL_GL_ACCUM_RED_SIZE: | |
422 *value = GL_pfd.cAccumRedBits; | |
423 break; | |
424 case SDL_GL_ACCUM_GREEN_SIZE: | |
425 *value = GL_pfd.cAccumGreenBits; | |
426 break; | |
427 case SDL_GL_ACCUM_BLUE_SIZE: | |
428 *value = GL_pfd.cAccumBlueBits; | |
429 break; | |
430 case SDL_GL_ACCUM_ALPHA_SIZE: | |
431 *value = GL_pfd.cAccumAlphaBits; | |
432 break; | |
450
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
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373
diff
changeset
|
433 case SDL_GL_STEREO: |
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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parents:
373
diff
changeset
|
434 if ( GL_pfd.dwFlags & PFD_STEREO ) { |
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
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373
diff
changeset
|
435 *value = 1; |
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
373
diff
changeset
|
436 } else { |
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
373
diff
changeset
|
437 *value = 0; |
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
373
diff
changeset
|
438 } |
8a43e0cbf02f
Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents:
373
diff
changeset
|
439 break; |
1261
031e093ba2a5
Date: Thu, 04 Sep 2003 02:12:35 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
889
diff
changeset
|
440 case SDL_GL_MULTISAMPLEBUFFERS: |
031e093ba2a5
Date: Thu, 04 Sep 2003 02:12:35 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
889
diff
changeset
|
441 *value = 0; |
031e093ba2a5
Date: Thu, 04 Sep 2003 02:12:35 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
889
diff
changeset
|
442 break; |
031e093ba2a5
Date: Thu, 04 Sep 2003 02:12:35 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
889
diff
changeset
|
443 case SDL_GL_MULTISAMPLESAMPLES: |
031e093ba2a5
Date: Thu, 04 Sep 2003 02:12:35 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
889
diff
changeset
|
444 *value = 1; |
031e093ba2a5
Date: Thu, 04 Sep 2003 02:12:35 +0200
Sam Lantinga <slouken@libsdl.org>
parents:
889
diff
changeset
|
445 break; |
0 | 446 default: |
447 retval = -1; | |
448 break; | |
449 } | |
450 return retval; | |
451 } | |
452 | |
453 void WIN_GL_SwapBuffers(_THIS) | |
454 { | |
455 SwapBuffers(GL_hdc); | |
456 } | |
457 | |
458 void WIN_GL_UnloadLibrary(_THIS) | |
459 { | |
460 if ( this->gl_config.driver_loaded ) { | |
461 FreeLibrary((HMODULE)this->gl_config.dll_handle); | |
462 | |
463 this->gl_data->wglGetProcAddress = NULL; | |
464 this->gl_data->wglCreateContext = NULL; | |
465 this->gl_data->wglDeleteContext = NULL; | |
466 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
|
467 this->gl_data->wglChoosePixelFormatARB = NULL; |
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
468 this->gl_data->wglGetPixelFormatAttribivARB = NULL; |
0 | 469 |
470 this->gl_config.dll_handle = NULL; | |
471 this->gl_config.driver_loaded = 0; | |
472 } | |
473 } | |
474 | |
475 /* Passing a NULL path means load pointers from the application */ | |
476 int WIN_GL_LoadLibrary(_THIS, const char* path) | |
477 { | |
478 HMODULE handle; | |
479 | |
480 if ( gl_active ) { | |
481 SDL_SetError("OpenGL context already created"); | |
482 return -1; | |
483 } | |
484 | |
485 if ( path == NULL ) { | |
486 path = DEFAULT_GL_DRIVER_PATH; | |
487 } | |
488 handle = LoadLibrary(path); | |
489 if ( handle == NULL ) { | |
490 SDL_SetError("Could not load OpenGL library"); | |
491 return -1; | |
492 } | |
493 | |
494 /* Unload the old driver and reset the pointers */ | |
495 WIN_GL_UnloadLibrary(this); | |
496 | |
497 /* Load new function pointers */ | |
655
9c42ee1b7d77
Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents:
453
diff
changeset
|
498 memset(this->gl_data, 0, sizeof(*this->gl_data)); |
0 | 499 this->gl_data->wglGetProcAddress = (void * (WINAPI *)(const char *)) |
500 GetProcAddress(handle, "wglGetProcAddress"); | |
501 this->gl_data->wglCreateContext = (HGLRC (WINAPI *)(HDC)) | |
502 GetProcAddress(handle, "wglCreateContext"); | |
503 this->gl_data->wglDeleteContext = (BOOL (WINAPI *)(HGLRC)) | |
504 GetProcAddress(handle, "wglDeleteContext"); | |
505 this->gl_data->wglMakeCurrent = (BOOL (WINAPI *)(HDC, HGLRC)) | |
506 GetProcAddress(handle, "wglMakeCurrent"); | |
507 | |
508 if ( (this->gl_data->wglGetProcAddress == NULL) || | |
509 (this->gl_data->wglCreateContext == NULL) || | |
510 (this->gl_data->wglDeleteContext == NULL) || | |
511 (this->gl_data->wglMakeCurrent == NULL) ) { | |
512 SDL_SetError("Could not retrieve OpenGL functions"); | |
513 FreeLibrary(handle); | |
514 return -1; | |
515 } | |
516 | |
517 this->gl_config.dll_handle = handle; | |
518 strcpy(this->gl_config.driver_path, path); | |
519 this->gl_config.driver_loaded = 1; | |
520 return 0; | |
521 } | |
522 | |
523 void *WIN_GL_GetProcAddress(_THIS, const char* proc) | |
524 { | |
525 void *func; | |
526 | |
527 /* This is to pick up extensions */ | |
528 func = this->gl_data->wglGetProcAddress(proc); | |
529 if ( ! func ) { | |
530 /* This is probably a normal GL function */ | |
531 func = GetProcAddress(this->gl_config.dll_handle, proc); | |
532 } | |
533 return func; | |
534 } | |
535 | |
536 #endif /* HAVE_OPENGL */ |