annotate src/video/x11/SDL_x11gl.c @ 1315:e94b0d7c33bc

Merged useful fixes from 1.3 branch
author Sam Lantinga <slouken@libsdl.org>
date Wed, 01 Feb 2006 08:17:54 +0000
parents c9b51268668f
children 3692456e7b0f
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 #include <stdlib.h> /* For getenv() prototype */
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24 #include <string.h>
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25
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26 #include "SDL_events_c.h"
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27 #include "SDL_error.h"
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28 #include "SDL_x11video.h"
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29 #include "SDL_x11dga_c.h"
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30 #include "SDL_x11gl_c.h"
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31
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32 #if defined(sgi)
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33 /* IRIX doesn't have a GL library versioning system */
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34 #define DEFAULT_OPENGL "libGL.so"
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35 #elif defined(MACOSX)
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36 #define DEFAULT_OPENGL "/usr/X11R6/lib/libGL.1.dylib"
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37 #else
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38 #define DEFAULT_OPENGL "libGL.so.1"
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39 #endif
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40
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41 #ifndef GLX_ARB_multisample
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42 #define GLX_ARB_multisample
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43 #define GLX_SAMPLE_BUFFERS_ARB 100000
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44 #define GLX_SAMPLES_ARB 100001
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45 #endif
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46
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47 XVisualInfo *X11_GL_GetVisual(_THIS)
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48 {
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49 #ifdef HAVE_OPENGL_X11
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50 /* 64 seems nice. */
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51 int attribs[64];
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52 int i;
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53
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54 /* load the gl driver from a default path */
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55 if ( ! this->gl_config.driver_loaded ) {
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56 /* no driver has been loaded, use default (ourselves) */
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57 if ( X11_GL_LoadLibrary(this, NULL) < 0 ) {
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58 return NULL;
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59 }
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60 }
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61
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62 /* See if we already have a window which we must use */
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63 if ( SDL_windowid ) {
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64 XWindowAttributes a;
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65 XVisualInfo vi_in;
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66 int out_count;
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67
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68 pXGetWindowAttributes(SDL_Display, SDL_Window, &a);
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69 vi_in.screen = SDL_Screen;
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70 vi_in.visualid = pXVisualIDFromVisual(a.visual);
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71 glx_visualinfo = pXGetVisualInfo(SDL_Display,
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72 VisualScreenMask|VisualIDMask, &vi_in, &out_count);
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73 return glx_visualinfo;
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74 }
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75
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76 /* Setup our GLX attributes according to the gl_config. */
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77 i = 0;
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78 attribs[i++] = GLX_RGBA;
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79 attribs[i++] = GLX_RED_SIZE;
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80 attribs[i++] = this->gl_config.red_size;
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81 attribs[i++] = GLX_GREEN_SIZE;
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82 attribs[i++] = this->gl_config.green_size;
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83 attribs[i++] = GLX_BLUE_SIZE;
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84 attribs[i++] = this->gl_config.blue_size;
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85
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86 if( this->gl_config.alpha_size ) {
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87 attribs[i++] = GLX_ALPHA_SIZE;
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88 attribs[i++] = this->gl_config.alpha_size;
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89 }
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90
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91 if( this->gl_config.buffer_size ) {
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92 attribs[i++] = GLX_BUFFER_SIZE;
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93 attribs[i++] = this->gl_config.buffer_size;
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94 }
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95
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96 if( this->gl_config.double_buffer ) {
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97 attribs[i++] = GLX_DOUBLEBUFFER;
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98 }
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99
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100 attribs[i++] = GLX_DEPTH_SIZE;
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101 attribs[i++] = this->gl_config.depth_size;
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102
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103 if( this->gl_config.stencil_size ) {
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104 attribs[i++] = GLX_STENCIL_SIZE;
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105 attribs[i++] = this->gl_config.stencil_size;
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106 }
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107
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108 if( this->gl_config.accum_red_size ) {
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109 attribs[i++] = GLX_ACCUM_RED_SIZE;
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110 attribs[i++] = this->gl_config.accum_red_size;
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111 }
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112
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113 if( this->gl_config.accum_green_size ) {
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114 attribs[i++] = GLX_ACCUM_GREEN_SIZE;
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115 attribs[i++] = this->gl_config.accum_green_size;
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116 }
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117
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118 if( this->gl_config.accum_blue_size ) {
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119 attribs[i++] = GLX_ACCUM_BLUE_SIZE;
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120 attribs[i++] = this->gl_config.accum_blue_size;
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121 }
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122
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123 if( this->gl_config.accum_alpha_size ) {
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124 attribs[i++] = GLX_ACCUM_ALPHA_SIZE;
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125 attribs[i++] = this->gl_config.accum_alpha_size;
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126 }
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127
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128 if( this->gl_config.stereo ) {
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129 attribs[i++] = GLX_STEREO;
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130 attribs[i++] = this->gl_config.stereo;
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131 }
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132
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133 if( this->gl_config.multisamplebuffers ) {
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134 attribs[i++] = GLX_SAMPLE_BUFFERS_ARB;
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135 attribs[i++] = this->gl_config.multisamplebuffers;
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136 }
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137
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138 if( this->gl_config.multisamplesamples ) {
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139 attribs[i++] = GLX_SAMPLES_ARB;
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140 attribs[i++] = this->gl_config.multisamplesamples;
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141 }
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142
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143 #ifdef GLX_DIRECT_COLOR /* Try for a DirectColor visual for gamma support */
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144 if ( !getenv("SDL_VIDEO_X11_NODIRECTCOLOR") ) {
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145 attribs[i++] = GLX_X_VISUAL_TYPE;
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146 attribs[i++] = GLX_DIRECT_COLOR;
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147 }
0
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148 #endif
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149 attribs[i++] = None;
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150
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151 glx_visualinfo = this->gl_data->glXChooseVisual(GFX_Display,
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152 SDL_Screen, attribs);
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153 #ifdef GLX_DIRECT_COLOR
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154 if( !glx_visualinfo && !getenv("SDL_VIDEO_X11_NODIRECTCOLOR") ) { /* No DirectColor visual? Try again.. */
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155 attribs[i-3] = None;
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156 glx_visualinfo = this->gl_data->glXChooseVisual(GFX_Display,
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157 SDL_Screen, attribs);
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158 }
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159 #endif
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160 if( !glx_visualinfo ) {
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161 SDL_SetError( "Couldn't find matching GLX visual");
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162 return NULL;
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163 }
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164 /*
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165 printf("Found GLX visual 0x%x\n", glx_visualinfo->visualid);
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166 */
0
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167 return glx_visualinfo;
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168 #else
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169 SDL_SetError("X11 driver not configured with OpenGL");
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170 return NULL;
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171 #endif
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172 }
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173
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174 int X11_GL_CreateWindow(_THIS, int w, int h)
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175 {
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176 int retval;
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177 #ifdef HAVE_OPENGL_X11
0
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178 XSetWindowAttributes attributes;
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179 unsigned long mask;
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180 unsigned long black;
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181
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182 black = (glx_visualinfo->visual == DefaultVisual(SDL_Display,
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183 SDL_Screen))
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184 ? BlackPixel(SDL_Display, SDL_Screen) : 0;
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185 attributes.background_pixel = black;
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186 attributes.border_pixel = black;
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187 attributes.colormap = SDL_XColorMap;
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188 mask = CWBackPixel | CWBorderPixel | CWColormap;
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189
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190 SDL_Window = pXCreateWindow(SDL_Display, WMwindow,
0
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191 0, 0, w, h, 0, glx_visualinfo->depth,
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192 InputOutput, glx_visualinfo->visual,
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193 mask, &attributes);
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194 if ( !SDL_Window ) {
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195 SDL_SetError("Could not create window");
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196 return -1;
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197 }
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198 retval = 0;
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199 #else
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200 SDL_SetError("X11 driver not configured with OpenGL");
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201 retval = -1;
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202 #endif
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203 return(retval);
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204 }
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205
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206 int X11_GL_CreateContext(_THIS)
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207 {
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208 int retval;
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209 #ifdef HAVE_OPENGL_X11
0
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210 /* We do this to create a clean separation between X and GLX errors. */
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211 pXSync( SDL_Display, False );
0
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212 glx_context = this->gl_data->glXCreateContext(GFX_Display,
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213 glx_visualinfo, NULL, True);
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214 pXSync( GFX_Display, False );
0
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215
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216 if (glx_context == NULL) {
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217 SDL_SetError("Could not create GL context");
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218 return -1;
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diff changeset
219 }
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220
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221 gl_active = 1;
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222 #else
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223 SDL_SetError("X11 driver not configured with OpenGL");
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224 #endif
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225 if ( gl_active ) {
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226 retval = 0;
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227 } else {
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228 retval = -1;
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229 }
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230 return(retval);
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231 }
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232
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233 void X11_GL_Shutdown(_THIS)
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234 {
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
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diff changeset
235 #ifdef HAVE_OPENGL_X11
0
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236 /* Clean up OpenGL */
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diff changeset
237 if( glx_context ) {
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238 this->gl_data->glXMakeCurrent(GFX_Display, None, NULL);
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239
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240 if (glx_context != NULL)
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diff changeset
241 this->gl_data->glXDestroyContext(GFX_Display, glx_context);
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diff changeset
242
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243 glx_context = NULL;
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244 }
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245 gl_active = 0;
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246 #endif /* HAVE_OPENGL_X11 */
0
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247 }
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diff changeset
248
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
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249 #ifdef HAVE_OPENGL_X11
0
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250
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diff changeset
251 /* Make the current context active */
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diff changeset
252 int X11_GL_MakeCurrent(_THIS)
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diff changeset
253 {
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diff changeset
254 int retval;
638
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 566
diff changeset
255
0
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diff changeset
256 retval = 0;
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diff changeset
257 if ( ! this->gl_data->glXMakeCurrent(GFX_Display,
74212992fb08 Initial revision
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diff changeset
258 SDL_Window, glx_context) ) {
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diff changeset
259 SDL_SetError("Unable to make GL context current");
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diff changeset
260 retval = -1;
74212992fb08 Initial revision
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diff changeset
261 }
1168
045f186426e1 Dynamically load X11 libraries like we currently do for alsa, esd, etc.
Ryan C. Gordon <icculus@icculus.org>
parents: 1060
diff changeset
262 pXSync( GFX_Display, False );
0
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parents:
diff changeset
263
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diff changeset
264 /* More Voodoo X server workarounds... Grr... */
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parents:
diff changeset
265 SDL_Lock_EventThread();
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diff changeset
266 X11_CheckDGAMouse(this);
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diff changeset
267 SDL_Unlock_EventThread();
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diff changeset
268
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diff changeset
269 return(retval);
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parents:
diff changeset
270 }
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diff changeset
271
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parents:
diff changeset
272 /* Get attribute data from glX. */
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diff changeset
273 int X11_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value)
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diff changeset
274 {
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diff changeset
275 int retval;
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diff changeset
276 int glx_attrib = None;
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parents:
diff changeset
277
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diff changeset
278 switch( attrib ) {
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diff changeset
279 case SDL_GL_RED_SIZE:
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diff changeset
280 glx_attrib = GLX_RED_SIZE;
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parents:
diff changeset
281 break;
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diff changeset
282 case SDL_GL_GREEN_SIZE:
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diff changeset
283 glx_attrib = GLX_GREEN_SIZE;
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diff changeset
284 break;
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diff changeset
285 case SDL_GL_BLUE_SIZE:
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diff changeset
286 glx_attrib = GLX_BLUE_SIZE;
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parents:
diff changeset
287 break;
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diff changeset
288 case SDL_GL_ALPHA_SIZE:
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diff changeset
289 glx_attrib = GLX_ALPHA_SIZE;
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diff changeset
290 break;
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parents:
diff changeset
291 case SDL_GL_DOUBLEBUFFER:
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parents:
diff changeset
292 glx_attrib = GLX_DOUBLEBUFFER;
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parents:
diff changeset
293 break;
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diff changeset
294 case SDL_GL_BUFFER_SIZE:
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diff changeset
295 glx_attrib = GLX_BUFFER_SIZE;
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diff changeset
296 break;
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diff changeset
297 case SDL_GL_DEPTH_SIZE:
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diff changeset
298 glx_attrib = GLX_DEPTH_SIZE;
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parents:
diff changeset
299 break;
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diff changeset
300 case SDL_GL_STENCIL_SIZE:
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diff changeset
301 glx_attrib = GLX_STENCIL_SIZE;
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parents:
diff changeset
302 break;
74212992fb08 Initial revision
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parents:
diff changeset
303 case SDL_GL_ACCUM_RED_SIZE:
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diff changeset
304 glx_attrib = GLX_ACCUM_RED_SIZE;
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parents:
diff changeset
305 break;
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parents:
diff changeset
306 case SDL_GL_ACCUM_GREEN_SIZE:
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diff changeset
307 glx_attrib = GLX_ACCUM_GREEN_SIZE;
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parents:
diff changeset
308 break;
74212992fb08 Initial revision
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parents:
diff changeset
309 case SDL_GL_ACCUM_BLUE_SIZE:
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diff changeset
310 glx_attrib = GLX_ACCUM_BLUE_SIZE;
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311 break;
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312 case SDL_GL_ACCUM_ALPHA_SIZE:
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313 glx_attrib = GLX_ACCUM_ALPHA_SIZE;
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314 break;
450
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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parents: 297
diff changeset
315 case SDL_GL_STEREO:
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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diff changeset
316 glx_attrib = GLX_STEREO;
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
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parents: 297
diff changeset
317 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
318 case SDL_GL_MULTISAMPLEBUFFERS:
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 646
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319 glx_attrib = GLX_SAMPLE_BUFFERS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 646
diff changeset
320 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
321 case SDL_GL_MULTISAMPLESAMPLES:
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 646
diff changeset
322 glx_attrib = GLX_SAMPLES_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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parents: 646
diff changeset
323 break;
0
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parents:
diff changeset
324 default:
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325 return(-1);
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parents:
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326 }
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327
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328 retval = this->gl_data->glXGetConfig(GFX_Display, glx_visualinfo, glx_attrib, value);
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parents:
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329
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diff changeset
330 return retval;
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parents:
diff changeset
331 }
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parents:
diff changeset
332
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parents:
diff changeset
333 void X11_GL_SwapBuffers(_THIS)
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parents:
diff changeset
334 {
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diff changeset
335 this->gl_data->glXSwapBuffers(GFX_Display, SDL_Window);
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parents:
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336 }
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337
1191
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338 #endif /* HAVE_OPENGL_X11 */
0
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339
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diff changeset
340 void X11_GL_UnloadLibrary(_THIS)
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341 {
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
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diff changeset
342 #ifdef HAVE_OPENGL_X11
0
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343 if ( this->gl_config.driver_loaded ) {
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
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344
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
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diff changeset
345 /* !!! FIXME: Can we just use SDL_UnloadObject() everywhere? */
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
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346 #ifdef USE_DLOPEN
0
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347 dlclose(this->gl_config.dll_handle);
1191
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348 #else
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
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349 SDL_UnloadObject(this->gl_config.dll_handle);
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
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diff changeset
350 #endif
0
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diff changeset
351
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diff changeset
352 this->gl_data->glXGetProcAddress = NULL;
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parents:
diff changeset
353 this->gl_data->glXChooseVisual = NULL;
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diff changeset
354 this->gl_data->glXCreateContext = NULL;
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diff changeset
355 this->gl_data->glXDestroyContext = NULL;
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parents:
diff changeset
356 this->gl_data->glXMakeCurrent = NULL;
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parents:
diff changeset
357 this->gl_data->glXSwapBuffers = NULL;
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parents:
diff changeset
358
74212992fb08 Initial revision
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parents:
diff changeset
359 this->gl_config.dll_handle = NULL;
74212992fb08 Initial revision
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parents:
diff changeset
360 this->gl_config.driver_loaded = 0;
74212992fb08 Initial revision
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parents:
diff changeset
361 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
362 #endif
74212992fb08 Initial revision
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parents:
diff changeset
363 }
74212992fb08 Initial revision
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parents:
diff changeset
364
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
365 #ifdef HAVE_OPENGL_X11
0
74212992fb08 Initial revision
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parents:
diff changeset
366
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
367 static void *do_dlsym(void *handle, const char *name)
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
368 {
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
369 /* !!! FIXME: Can we just use SDL_LoadFunction() everywhere? */
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
370 #ifdef USE_DLOPEN
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
371 return dlsym(handle, name);
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
372 #else
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
373 return SDL_LoadFunction(handle, name);
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
374 #endif
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
375 }
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
376
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
377 #if defined(__OpenBSD__) && !defined(__ELF__)
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
378 #define do_dlsym(x,y) do_dlsym(x, "_" y)
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
379 #endif
1182
e8e8dcb68e7a X11 driver now chooses "libGL.so.1" as a default when a NULL is passed to
Ryan C. Gordon <icculus@icculus.org>
parents: 1168
diff changeset
380
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
381 /* Passing a NULL path means load pointers from the application */
74212992fb08 Initial revision
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parents:
diff changeset
382 int X11_GL_LoadLibrary(_THIS, const char* path)
74212992fb08 Initial revision
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parents:
diff changeset
383 {
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
384 void* handle = NULL;
0
74212992fb08 Initial revision
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parents:
diff changeset
385
1182
e8e8dcb68e7a X11 driver now chooses "libGL.so.1" as a default when a NULL is passed to
Ryan C. Gordon <icculus@icculus.org>
parents: 1168
diff changeset
386 if ( gl_active ) {
e8e8dcb68e7a X11 driver now chooses "libGL.so.1" as a default when a NULL is passed to
Ryan C. Gordon <icculus@icculus.org>
parents: 1168
diff changeset
387 SDL_SetError("OpenGL context already created");
e8e8dcb68e7a X11 driver now chooses "libGL.so.1" as a default when a NULL is passed to
Ryan C. Gordon <icculus@icculus.org>
parents: 1168
diff changeset
388 return -1;
e8e8dcb68e7a X11 driver now chooses "libGL.so.1" as a default when a NULL is passed to
Ryan C. Gordon <icculus@icculus.org>
parents: 1168
diff changeset
389 }
e8e8dcb68e7a X11 driver now chooses "libGL.so.1" as a default when a NULL is passed to
Ryan C. Gordon <icculus@icculus.org>
parents: 1168
diff changeset
390
e8e8dcb68e7a X11 driver now chooses "libGL.so.1" as a default when a NULL is passed to
Ryan C. Gordon <icculus@icculus.org>
parents: 1168
diff changeset
391 if ( path == NULL ) {
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
392 path = getenv("SDL_VIDEO_GL_DRIVER");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
393 if ( path == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
394 path = DEFAULT_OPENGL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
395 }
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
396 }
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
397
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
398 /* !!! FIXME: Can we just use SDL_LoadObject() everywhere? */
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
399 #ifdef USE_DLOPEN
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
400 {
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
401 #ifdef RTLD_GLOBAL
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
402 int dlopen_flags = RTLD_LAZY | RTLD_GLOBAL;
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
403 #else
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
404 int dlopen_flags = RTLD_LAZY;
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
405 #endif
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
406 handle = dlopen(path, dlopen_flags);
1246
ca51a76a7328 Make error message meaningful if dlopen() fails on libX11.
Ryan C. Gordon <icculus@icculus.org>
parents: 1196
diff changeset
407 if ( handle == NULL ) {
ca51a76a7328 Make error message meaningful if dlopen() fails on libX11.
Ryan C. Gordon <icculus@icculus.org>
parents: 1196
diff changeset
408 SDL_SetError("Could not load OpenGL library: %s", (const char *) dlerror());
ca51a76a7328 Make error message meaningful if dlopen() fails on libX11.
Ryan C. Gordon <icculus@icculus.org>
parents: 1196
diff changeset
409 return -1;
ca51a76a7328 Make error message meaningful if dlopen() fails on libX11.
Ryan C. Gordon <icculus@icculus.org>
parents: 1196
diff changeset
410 }
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
411 }
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
412 #else
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
413 handle = SDL_LoadObject(path);
1246
ca51a76a7328 Make error message meaningful if dlopen() fails on libX11.
Ryan C. Gordon <icculus@icculus.org>
parents: 1196
diff changeset
414 if ( handle == NULL ) {
1247
ff73ee89ff4b Don't trample SDL_LoadObject()'s error message in GL loader.
Ryan C. Gordon <icculus@icculus.org>
parents: 1246
diff changeset
415 /* SDL_LoadObject() will call SDL_SetError() for us. */
1246
ca51a76a7328 Make error message meaningful if dlopen() fails on libX11.
Ryan C. Gordon <icculus@icculus.org>
parents: 1196
diff changeset
416 return -1;
ca51a76a7328 Make error message meaningful if dlopen() fails on libX11.
Ryan C. Gordon <icculus@icculus.org>
parents: 1196
diff changeset
417 }
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
418 #endif
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
419
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
420
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
421 /* Unload the old driver and reset the pointers */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
422 X11_GL_UnloadLibrary(this);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
423
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
424 /* Load new function pointers */
180
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
425 this->gl_data->glXGetProcAddress =
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
426 (void *(*)(const GLubyte *)) do_dlsym(handle, "glXGetProcAddressARB");
180
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
427 this->gl_data->glXChooseVisual =
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
428 (XVisualInfo *(*)(Display *, int, int *)) do_dlsym(handle, "glXChooseVisual");
180
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
429 this->gl_data->glXCreateContext =
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
430 (GLXContext (*)(Display *, XVisualInfo *, GLXContext, int)) do_dlsym(handle, "glXCreateContext");
180
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
431 this->gl_data->glXDestroyContext =
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
432 (void (*)(Display *, GLXContext)) do_dlsym(handle, "glXDestroyContext");
180
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
433 this->gl_data->glXMakeCurrent =
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
434 (int (*)(Display *, GLXDrawable, GLXContext)) do_dlsym(handle, "glXMakeCurrent");
180
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
435 this->gl_data->glXSwapBuffers =
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
436 (void (*)(Display *, GLXDrawable)) do_dlsym(handle, "glXSwapBuffers");
180
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
437 this->gl_data->glXGetConfig =
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
438 (int (*)(Display *, XVisualInfo *, int, int *)) do_dlsym(handle, "glXGetConfig");
638
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 566
diff changeset
439 this->gl_data->glXQueryExtensionsString =
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
440 (const char *(*)(Display *, int)) do_dlsym(handle, "glXQueryExtensionsString");
638
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 566
diff changeset
441
1315
e94b0d7c33bc Merged useful fixes from 1.3 branch
Sam Lantinga <slouken@libsdl.org>
parents: 1312
diff changeset
442
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
443 if ( (this->gl_data->glXChooseVisual == NULL) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
444 (this->gl_data->glXCreateContext == NULL) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
445 (this->gl_data->glXDestroyContext == NULL) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
446 (this->gl_data->glXMakeCurrent == NULL) ||
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
447 (this->gl_data->glXSwapBuffers == NULL) ||
638
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 566
diff changeset
448 (this->gl_data->glXGetConfig == NULL) ||
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 566
diff changeset
449 (this->gl_data->glXQueryExtensionsString == NULL)) {
0
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Sam Lantinga <slouken@lokigames.com>
parents:
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450 SDL_SetError("Could not retrieve OpenGL functions");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
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451 return -1;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
452 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
453
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Sam Lantinga <slouken@lokigames.com>
parents:
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454 this->gl_config.dll_handle = handle;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
455 this->gl_config.driver_loaded = 1;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
456 if ( path ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
457 strncpy(this->gl_config.driver_path, path,
74212992fb08 Initial revision
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parents:
diff changeset
458 sizeof(this->gl_config.driver_path)-1);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
459 } else {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
460 strcpy(this->gl_config.driver_path, "");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
461 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
462 return 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
463 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
464
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
465 void *X11_GL_GetProcAddress(_THIS, const char* proc)
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
466 {
110
7edee9f0f2cc SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents: 29
diff changeset
467 static char procname[1024];
0
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parents:
diff changeset
468 void* handle;
110
7edee9f0f2cc SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents: 29
diff changeset
469 void* retval;
0
74212992fb08 Initial revision
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parents:
diff changeset
470
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parents:
diff changeset
471 handle = this->gl_config.dll_handle;
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
472 if ( this->gl_data->glXGetProcAddress ) {
1196
b81f54c3963f Fixed compile warnings with gcc 4
Sam Lantinga <slouken@libsdl.org>
parents: 1191
diff changeset
473 return this->gl_data->glXGetProcAddress((const GLubyte *)proc);
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
474 }
110
7edee9f0f2cc SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents: 29
diff changeset
475 #if defined(__OpenBSD__) && !defined(__ELF__)
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
476 #undef do_dlsym
110
7edee9f0f2cc SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents: 29
diff changeset
477 #endif
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
478 retval = do_dlsym(handle, proc);
110
7edee9f0f2cc SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents: 29
diff changeset
479 if (!retval && strlen(proc) <= 1022) {
127
0bcae11eba14 Oops, that wasn't right...
Sam Lantinga <slouken@libsdl.org>
parents: 110
diff changeset
480 procname[0] = '_';
110
7edee9f0f2cc SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents: 29
diff changeset
481 strcpy(procname + 1, proc);
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
482 retval = do_dlsym(handle, procname);
110
7edee9f0f2cc SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents: 29
diff changeset
483 }
7edee9f0f2cc SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents: 29
diff changeset
484 return retval;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
485 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
486
1191
2bd4cec0de63 Seperate glX from HAVE_OPENGL, for platforms that have both an X server and
Ryan C. Gordon <icculus@icculus.org>
parents: 1182
diff changeset
487 #endif /* HAVE_OPENGL_X11 */