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annotate src/video/wincommon/SDL_wingl.c @ 713:7c8deec1659c

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Fixed X11 mode line crash with only one video mode (thanks Alan!)
author Sam Lantinga <slouken@libsdl.org>
date Fri, 05 Sep 2003 15:18:46 +0000
parents 92a933bf2f0f
children ed57c876700d
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, 1998, 1999, 2000, 2001, 2002 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Library General Public
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7 License as published by the Free Software Foundation; either
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8 version 2 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Library General Public License for more details.
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14
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15 You should have received a copy of the GNU Library General Public
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16 License along with this library; if not, write to the Free
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17 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #ifdef SAVE_RCSID
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24 static char rcsid =
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25 "@(#) $Id$";
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26 #endif
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27
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28 #include <string.h>
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29
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30 /* WGL implementation of SDL OpenGL support */
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31
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32 #ifdef HAVE_OPENGL
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33 #include "SDL_opengl.h"
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34 #endif
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35 #include "SDL_error.h"
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36 #include "SDL_lowvideo.h"
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37 #include "SDL_wingl_c.h"
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38
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39 #ifdef HAVE_OPENGL
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40 #define DEFAULT_GL_DRIVER_PATH "OPENGL32.DLL"
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41 #endif
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42
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43 /* If setting the HDC fails, we may need to recreate the window (MSDN) */
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44 static int WIN_GL_ResetWindow(_THIS)
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45 {
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46 int status = 0;
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47 int can_reset = 1;
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48
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49 /* If we were passed a window, then we can't create a new one */
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50 if ( SDL_windowid ) {
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51 can_reset = 0;
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52 }
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53 #ifndef _WIN32_WCE /* FIXME WinCE needs the UNICODE version of CreateWindow() */
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54 if ( can_reset ) {
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55 /* Save the existing window attributes */
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56 LONG style;
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57 RECT rect = { 0, 0, 0, 0 };
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58 style = GetWindowLong(SDL_Window, GWL_STYLE);
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59 GetWindowRect(SDL_Window, &rect);
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60 DestroyWindow(SDL_Window);
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61 SDL_Window = CreateWindow(SDL_Appname, SDL_Appname,
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62 style,
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63 rect.left, rect.top,
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64 (rect.right-rect.left)+1,
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65 (rect.top-rect.bottom)+1,
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66 NULL, NULL, SDL_Instance, NULL);
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67 if ( SDL_Window ) {
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68 this->SetCaption(this, this->wm_title, this->wm_icon);
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69 } else {
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70 SDL_SetError("Couldn't create window");
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71 status = -1;
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72 }
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73 } else
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74 #endif /* !_WIN32_WCE */
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75 {
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76 SDL_SetError("Unable to reset window for OpenGL context");
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77 status = -1;
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78 }
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79 return(status);
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80 }
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81
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82 static void Init_WGL_ARB_extensions(_THIS)
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83 {
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84 HWND hwnd;
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85 HDC hdc;
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86 HGLRC hglrc;
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87 int pformat;
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88 const char * (WINAPI *wglGetExtensionsStringARB)(HDC) = 0;
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89
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90 hwnd = CreateWindow(SDL_Appname, SDL_Appname, WS_POPUP | WS_DISABLED,
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91 0, 0, 10, 10,
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92 NULL, NULL, SDL_Instance,NULL);
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93 hdc = GetDC(hwnd);
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94
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95 pformat = ChoosePixelFormat(hdc, &GL_pfd);
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96 SetPixelFormat(hdc, pformat, &GL_pfd);
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97
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98 hglrc = this->gl_data->wglCreateContext(hdc);
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99 if ( hglrc ) {
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100 this->gl_data->wglMakeCurrent(hdc, hglrc);
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101 }
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102
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103 wglGetExtensionsStringARB = (const char * (WINAPI *)(HDC))
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104 this->gl_data->wglGetProcAddress("wglGetExtensionsStringARB");
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105
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106 if(wglGetExtensionsStringARB && strstr(wglGetExtensionsStringARB(hdc),"WGL_ARB_pixel_format")) {
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107 this->gl_data->wglChoosePixelFormatARB =
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108 (BOOL (WINAPI *)(HDC, const int *, const FLOAT *, UINT, int *, UINT *))
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109 this->gl_data->wglGetProcAddress("wglChoosePixelFormatARB");
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110 this->gl_data->wglGetPixelFormatAttribivARB =
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111 (BOOL (WINAPI *)(HDC, int, int, UINT, const int *, int *))
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112 this->gl_data->wglGetProcAddress("wglGetPixelFormatAttribivARB");
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113
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114 if( (this->gl_data->wglChoosePixelFormatARB != NULL) &&
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115 (this->gl_data->wglGetPixelFormatAttribivARB != NULL) )
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116 this->gl_data->wgl_arb_pixel_format = 1;
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117 else
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118 this->gl_data->wgl_arb_pixel_format = 0;
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119 } else {
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120 this->gl_data->wgl_arb_pixel_format = 0;
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121 }
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122
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123 if ( hglrc ) {
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124 this->gl_data->wglMakeCurrent(NULL, NULL);
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125 this->gl_data->wglDeleteContext(hglrc);
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126 }
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127 ReleaseDC(hwnd, hdc);
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128 DestroyWindow(hwnd);
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129 }
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130
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131 int WIN_GL_SetupWindow(_THIS)
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132 {
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133 int retval;
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134 #ifdef HAVE_OPENGL
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135 int i;
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136 unsigned int matching;
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137 int iAttribs[64];
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138 int *iAttr;
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139 float fAttribs[1] = { 0 };
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140
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141 /* load the gl driver from a default path */
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142 if ( ! this->gl_config.driver_loaded ) {
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parents:
diff changeset
143 /* no driver has been loaded, use default (ourselves) */
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parents:
diff changeset
144 if ( WIN_GL_LoadLibrary(this, NULL) < 0 ) {
74212992fb08 Initial revision
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parents:
diff changeset
145 return(-1);
74212992fb08 Initial revision
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parents:
diff changeset
146 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
147 }
74212992fb08 Initial revision
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parents:
diff changeset
148
373
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parents: 327
diff changeset
149 for ( i=0; ; ++i ) {
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diff changeset
150 /* Get the window device context for our OpenGL drawing */
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parents: 327
diff changeset
151 GL_hdc = GetDC(SDL_Window);
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parents: 327
diff changeset
152 if ( GL_hdc == NULL ) {
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
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diff changeset
153 SDL_SetError("Unable to get DC for SDL_Window");
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
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parents: 327
diff changeset
154 return(-1);
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
155 }
0
74212992fb08 Initial revision
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parents:
diff changeset
156
373
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
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parents: 327
diff changeset
157 /* Set up the pixel format descriptor with our needed format */
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
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diff changeset
158 memset(&GL_pfd, 0, sizeof(GL_pfd));
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
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parents: 327
diff changeset
159 GL_pfd.nSize = sizeof(GL_pfd);
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parents: 327
diff changeset
160 GL_pfd.nVersion = 1;
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
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parents: 327
diff changeset
161 GL_pfd.dwFlags = (PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL);
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
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parents: 327
diff changeset
162 if ( this->gl_config.double_buffer ) {
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
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parents: 327
diff changeset
163 GL_pfd.dwFlags |= PFD_DOUBLEBUFFER;
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
164 }
450
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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parents: 373
diff changeset
165 if ( this->gl_config.stereo ) {
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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parents: 373
diff changeset
166 GL_pfd.dwFlags |= PFD_STEREO;
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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parents: 373
diff changeset
167 }
373
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
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parents: 327
diff changeset
168 GL_pfd.iPixelType = PFD_TYPE_RGBA;
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parents: 327
diff changeset
169 GL_pfd.cColorBits = this->gl_config.buffer_size;
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parents: 327
diff changeset
170 GL_pfd.cRedBits = this->gl_config.red_size;
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parents: 327
diff changeset
171 GL_pfd.cGreenBits = this->gl_config.green_size;
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parents: 327
diff changeset
172 GL_pfd.cBlueBits = this->gl_config.blue_size;
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parents: 327
diff changeset
173 GL_pfd.cAlphaBits = this->gl_config.alpha_size;
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parents: 327
diff changeset
174 GL_pfd.cAccumRedBits = this->gl_config.accum_red_size;
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parents: 327
diff changeset
175 GL_pfd.cAccumGreenBits = this->gl_config.accum_green_size;
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parents: 327
diff changeset
176 GL_pfd.cAccumBlueBits = this->gl_config.accum_blue_size;
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parents: 327
diff changeset
177 GL_pfd.cAccumAlphaBits = this->gl_config.accum_alpha_size;
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parents: 327
diff changeset
178 GL_pfd.cAccumBits =
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parents: 327
diff changeset
179 (GL_pfd.cAccumRedBits + GL_pfd.cAccumGreenBits +
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
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parents: 327
diff changeset
180 GL_pfd.cAccumBlueBits + GL_pfd.cAccumAlphaBits);
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
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parents: 327
diff changeset
181 GL_pfd.cDepthBits = this->gl_config.depth_size;
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
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parents: 327
diff changeset
182 GL_pfd.cStencilBits = this->gl_config.stencil_size;
0
74212992fb08 Initial revision
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parents:
diff changeset
183
655
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parents: 453
diff changeset
184 /* initialize WGL_ARB_pixel_format */
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
185 Init_WGL_ARB_extensions(this);
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
186
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
187 /* setup WGL_ARB_pixel_format attribs */
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
188 iAttr = &iAttribs[0];
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
189
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
190 *iAttr++ = WGL_DRAW_TO_WINDOW_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
191 *iAttr++ = GL_TRUE;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
192 *iAttr++ = WGL_ACCELERATION_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
193 *iAttr++ = WGL_FULL_ACCELERATION_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
194 *iAttr++ = WGL_RED_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
195 *iAttr++ = this->gl_config.red_size;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
196 *iAttr++ = WGL_GREEN_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
197 *iAttr++ = this->gl_config.green_size;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
198 *iAttr++ = WGL_BLUE_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
199 *iAttr++ = this->gl_config.blue_size;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
200
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
201 if ( this->gl_config.alpha_size ) {
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
202 *iAttr++ = WGL_ALPHA_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 453
diff changeset
203 *iAttr++ = this->gl_config.alpha_size;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
204 }
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
205
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
206 if ( this->gl_config.double_buffer ) {
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
207 *iAttr ++ = WGL_DOUBLE_BUFFER_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
208 *iAttr ++ = GL_TRUE;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
209 }
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
210
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
211 *iAttr++ = WGL_DEPTH_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
212 *iAttr++ = this->gl_config.depth_size;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
213
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
214 if ( this->gl_config.stencil_size ) {
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
215 *iAttr++ = WGL_STENCIL_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
216 *iAttr++ = this->gl_config.stencil_size;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
217 }
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
218
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
219 if ( this->gl_config.accum_red_size ) {
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
220 *iAttr++ = WGL_ACCUM_RED_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
221 *iAttr++ = this->gl_config.accum_red_size;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
222 }
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
223
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
224 if ( this->gl_config.accum_green_size ) {
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
225 *iAttr++ = WGL_ACCUM_GREEN_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
226 *iAttr++ = this->gl_config.accum_green_size;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
227 }
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
228
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
229 if ( this->gl_config.accum_blue_size ) {
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
230 *iAttr++ = WGL_ACCUM_BLUE_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
231 *iAttr++ = this->gl_config.accum_blue_size;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
232 }
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
233
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
234 if ( 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
235 *iAttr++ = WGL_ACCUM_ALPHA_BITS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
236 *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
237 }
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
238
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
239 if ( this->gl_config.stereo ) {
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
240 *iAttr++ = WGL_STEREO_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
241 *iAttr++ = this->gl_config.stereo;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
242 }
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
243
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
244 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
245 *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
246 *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
247 }
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
248
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
249 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
250 *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
251 *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
252 }
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
253
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
254 *iAttr = 0;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
255
373
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
256 /* Choose and set the closest available pixel format */
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
257 if ( !this->gl_data->wgl_arb_pixel_format ||
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
258 !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
259 !matching ) {
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
260 pixel_format = ChoosePixelFormat(GL_hdc, &GL_pfd);
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
261 this->gl_data->wgl_arb_pixel_format = 0;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
262 }
373
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
263 if ( !pixel_format ) {
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
264 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
265 return(-1);
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
266 }
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
267 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
268 if ( i == 0 ) {
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
269 /* 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
270 if ( WIN_GL_ResetWindow(this) < 0 ) {
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
271 return(-1);
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
272 }
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
273 continue;
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
274 }
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
275 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
276 return(-1);
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
277 }
c638fde8a824 Fixed setting OpenGL mode multiple times on Windows
Sam Lantinga <slouken@libsdl.org>
parents: 327
diff changeset
278 /* 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
279 break;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
280 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
281 DescribePixelFormat(GL_hdc, pixel_format, sizeof(GL_pfd), &GL_pfd);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
282
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
283 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
284 if ( GL_hrc == NULL ) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
285 SDL_SetError("Unable to create GL context");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
286 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
287 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
288 gl_active = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
289 #else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
290 SDL_SetError("WIN driver not configured with OpenGL");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
291 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
292 if ( gl_active ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
293 retval = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
294 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
295 retval = -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
296 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
297 return(retval);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
298 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
299
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
300 void WIN_GL_ShutDown(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
301 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
302 #ifdef HAVE_OPENGL
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
303 /* Clean up OpenGL */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
304 if ( GL_hrc ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
305 this->gl_data->wglMakeCurrent(NULL, NULL);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
306 this->gl_data->wglDeleteContext(GL_hrc);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
307 GL_hrc = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
308 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
309 if ( GL_hdc ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
310 ReleaseDC(SDL_Window, GL_hdc);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
311 GL_hdc = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
312 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
313 gl_active = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
314
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
315 WIN_GL_UnloadLibrary(this);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
316 #endif /* HAVE_OPENGL */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
317 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
318
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
319 #ifdef HAVE_OPENGL
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
320
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
321 /* Make the current context active */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
322 int WIN_GL_MakeCurrent(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
323 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
324 int retval;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
325
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
326 retval = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
327 if ( ! this->gl_data->wglMakeCurrent(GL_hdc, GL_hrc) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
328 SDL_SetError("Unable to make GL context current");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
329 retval = -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
330 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
331 return(retval);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
332 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
333
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
334 /* Get attribute data from glX. */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
335 int WIN_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
336 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
337 int retval;
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
338
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
339 if ( this->gl_data->wgl_arb_pixel_format ) {
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
340 int wgl_attrib;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
341
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
342 switch(attrib) {
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
343 case SDL_GL_RED_SIZE:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
344 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
345 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
346 case SDL_GL_GREEN_SIZE:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
347 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
348 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
349 case SDL_GL_BLUE_SIZE:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
350 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
351 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
352 case SDL_GL_ALPHA_SIZE:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
353 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
354 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
355 case SDL_GL_DOUBLEBUFFER:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
356 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
357 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
358 case SDL_GL_BUFFER_SIZE:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
359 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
360 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
361 case SDL_GL_DEPTH_SIZE:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
362 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
363 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
364 case SDL_GL_STENCIL_SIZE:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
365 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
366 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
367 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
368 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
369 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
370 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
371 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
372 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
373 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
374 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
375 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
376 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
377 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
378 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
379 case SDL_GL_STEREO:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
380 wgl_attrib = WGL_STEREO_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
381 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
382 case SDL_GL_MULTISAMPLEBUFFERS:
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
383 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
384 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
385 case SDL_GL_MULTISAMPLESAMPLES:
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
386 wgl_attrib = WGL_SAMPLES_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
387 break;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
388 default:
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
389 return(-1);
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
390 }
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
391 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
392
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
393 return 0;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
394 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
395
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
396 retval = 0;
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
397 switch ( attrib ) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
398 case SDL_GL_RED_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
399 *value = GL_pfd.cRedBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
400 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
401 case SDL_GL_GREEN_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
402 *value = GL_pfd.cGreenBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
403 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
404 case SDL_GL_BLUE_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
405 *value = GL_pfd.cBlueBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
406 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
407 case SDL_GL_ALPHA_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
408 *value = GL_pfd.cAlphaBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
409 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
410 case SDL_GL_DOUBLEBUFFER:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
411 if ( GL_pfd.dwFlags & PFD_DOUBLEBUFFER ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
412 *value = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
413 } else {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
414 *value = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
415 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
416 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
417 case SDL_GL_BUFFER_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
418 *value = GL_pfd.cColorBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
419 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
420 case SDL_GL_DEPTH_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
421 *value = GL_pfd.cDepthBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
422 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
423 case SDL_GL_STENCIL_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
424 *value = GL_pfd.cStencilBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
425 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
426 case SDL_GL_ACCUM_RED_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
427 *value = GL_pfd.cAccumRedBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
428 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
429 case SDL_GL_ACCUM_GREEN_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
430 *value = GL_pfd.cAccumGreenBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
431 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
432 case SDL_GL_ACCUM_BLUE_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
433 *value = GL_pfd.cAccumBlueBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
434 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
435 case SDL_GL_ACCUM_ALPHA_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
436 *value = GL_pfd.cAccumAlphaBits;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
437 break;
450
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents: 373
diff changeset
438 case SDL_GL_STEREO:
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents: 373
diff changeset
439 if ( GL_pfd.dwFlags & PFD_STEREO ) {
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents: 373
diff changeset
440 *value = 1;
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents: 373
diff changeset
441 } else {
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents: 373
diff changeset
442 *value = 0;
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents: 373
diff changeset
443 }
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents: 373
diff changeset
444 break;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
445 default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
446 retval = -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
447 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
448 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
449 return retval;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
450 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
451
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
452 void WIN_GL_SwapBuffers(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
453 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
454 SwapBuffers(GL_hdc);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
455 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
456
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
457 void WIN_GL_UnloadLibrary(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
458 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
459 if ( this->gl_config.driver_loaded ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
460 FreeLibrary((HMODULE)this->gl_config.dll_handle);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
461
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
462 this->gl_data->wglGetProcAddress = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
463 this->gl_data->wglCreateContext = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
464 this->gl_data->wglDeleteContext = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
465 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
466 this->gl_data->wglChoosePixelFormatARB = NULL;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
467 this->gl_data->wglGetPixelFormatAttribivARB = NULL;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
468
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
469 this->gl_config.dll_handle = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
470 this->gl_config.driver_loaded = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
471 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
472 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
473
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
474 /* Passing a NULL path means load pointers from the application */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
475 int WIN_GL_LoadLibrary(_THIS, const char* path)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
476 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
477 HMODULE handle;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
478
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
479 if ( gl_active ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
480 SDL_SetError("OpenGL context already created");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
481 return -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
482 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
483
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
484 if ( path == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
485 path = DEFAULT_GL_DRIVER_PATH;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
486 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
487 handle = LoadLibrary(path);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
488 if ( handle == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
489 SDL_SetError("Could not load OpenGL library");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
490 return -1;
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 /* Unload the old driver and reset the pointers */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
494 WIN_GL_UnloadLibrary(this);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
495
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
496 /* Load new function pointers */
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 453
diff changeset
497 memset(this->gl_data, 0, sizeof(*this->gl_data));
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
498 this->gl_data->wglGetProcAddress = (void * (WINAPI *)(const char *))
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
499 GetProcAddress(handle, "wglGetProcAddress");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
500 this->gl_data->wglCreateContext = (HGLRC (WINAPI *)(HDC))
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
501 GetProcAddress(handle, "wglCreateContext");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
502 this->gl_data->wglDeleteContext = (BOOL (WINAPI *)(HGLRC))
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
503 GetProcAddress(handle, "wglDeleteContext");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
504 this->gl_data->wglMakeCurrent = (BOOL (WINAPI *)(HDC, HGLRC))
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
505 GetProcAddress(handle, "wglMakeCurrent");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
506
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
507 if ( (this->gl_data->wglGetProcAddress == NULL) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
508 (this->gl_data->wglCreateContext == NULL) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
509 (this->gl_data->wglDeleteContext == NULL) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
510 (this->gl_data->wglMakeCurrent == NULL) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
511 SDL_SetError("Could not retrieve OpenGL functions");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
512 FreeLibrary(handle);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
513 return -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
514 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
515
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
516 this->gl_config.dll_handle = handle;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
517 strcpy(this->gl_config.driver_path, path);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
518 this->gl_config.driver_loaded = 1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
519 return 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
520 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
521
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
522 void *WIN_GL_GetProcAddress(_THIS, const char* proc)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
523 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
524 void *func;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
525
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
526 /* This is to pick up extensions */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
527 func = this->gl_data->wglGetProcAddress(proc);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
528 if ( ! func ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
529 /* This is probably a normal GL function */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
530 func = GetProcAddress(this->gl_config.dll_handle, proc);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
531 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
532 return func;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
533 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
534
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
535 #endif /* HAVE_OPENGL */