annotate src/video/x11/SDL_x11gl.c @ 862:f7a8b0ca2ae3

IRIX doesn't have a GL library versioning system
author Sam Lantinga <slouken@libsdl.org>
date Thu, 26 Feb 2004 20:49:45 +0000
parents b8d311d90021
children 86885b40a53b
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2004 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 <stdlib.h> /* For getenv() prototype */
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29 #include <string.h>
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30
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31 #include "SDL_events_c.h"
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32 #include "SDL_error.h"
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33 #include "SDL_x11video.h"
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34 #include "SDL_x11dga_c.h"
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35 #include "SDL_x11gl_c.h"
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36
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37 #if defined(sgi)
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38 /* IRIX doesn't have a GL library versioning system */
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39 #define DEFAULT_OPENGL "libGL.so"
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40 #else
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41 #define DEFAULT_OPENGL "libGL.so.1"
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42 #endif
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43
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44 #ifndef GLX_ARB_multisample
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45 #define GLX_ARB_multisample
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46 #define GLX_SAMPLE_BUFFERS_ARB 100000
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47 #define GLX_SAMPLES_ARB 100001
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48 #endif
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49
0
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50 /* return the preferred visual to use for openGL graphics */
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51 XVisualInfo *X11_GL_GetVisual(_THIS)
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52 {
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53 #ifdef HAVE_OPENGL
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54 /* 64 seems nice. */
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55 int attribs[64];
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56 int i;
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57
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58 /* load the gl driver from a default path */
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59 if ( ! this->gl_config.driver_loaded ) {
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60 /* no driver has been loaded, use default (ourselves) */
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61 if ( X11_GL_LoadLibrary(this, NULL) < 0 ) {
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62 return NULL;
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63 }
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64 }
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65
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66 /* See if we already have a window which we must use */
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67 if ( SDL_windowid ) {
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68 XWindowAttributes a;
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69 XVisualInfo vi_in;
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70 int out_count;
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71
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72 XGetWindowAttributes(SDL_Display, SDL_Window, &a);
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73 vi_in.screen = SDL_Screen;
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74 vi_in.visualid = XVisualIDFromVisual(a.visual);
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75 glx_visualinfo = XGetVisualInfo(SDL_Display,
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76 VisualScreenMask|VisualIDMask, &vi_in, &out_count);
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77 return glx_visualinfo;
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78 }
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79
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80 /* Setup our GLX attributes according to the gl_config. */
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81 i = 0;
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82 attribs[i++] = GLX_RGBA;
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83 attribs[i++] = GLX_RED_SIZE;
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84 attribs[i++] = this->gl_config.red_size;
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85 attribs[i++] = GLX_GREEN_SIZE;
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86 attribs[i++] = this->gl_config.green_size;
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87 attribs[i++] = GLX_BLUE_SIZE;
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88 attribs[i++] = this->gl_config.blue_size;
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89
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90 if( this->gl_config.alpha_size ) {
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91 attribs[i++] = GLX_ALPHA_SIZE;
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92 attribs[i++] = this->gl_config.alpha_size;
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93 }
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94
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95 if( this->gl_config.buffer_size ) {
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96 attribs[i++] = GLX_BUFFER_SIZE;
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97 attribs[i++] = this->gl_config.buffer_size;
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98 }
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99
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100 if( this->gl_config.double_buffer ) {
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101 attribs[i++] = GLX_DOUBLEBUFFER;
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102 }
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103
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104 attribs[i++] = GLX_DEPTH_SIZE;
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105 attribs[i++] = this->gl_config.depth_size;
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106
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107 if( this->gl_config.stencil_size ) {
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108 attribs[i++] = GLX_STENCIL_SIZE;
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109 attribs[i++] = this->gl_config.stencil_size;
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110 }
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111
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112 if( this->gl_config.accum_red_size ) {
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113 attribs[i++] = GLX_ACCUM_RED_SIZE;
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114 attribs[i++] = this->gl_config.accum_red_size;
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115 }
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116
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117 if( this->gl_config.accum_green_size ) {
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118 attribs[i++] = GLX_ACCUM_GREEN_SIZE;
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119 attribs[i++] = this->gl_config.accum_green_size;
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120 }
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121
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122 if( this->gl_config.accum_blue_size ) {
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123 attribs[i++] = GLX_ACCUM_BLUE_SIZE;
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124 attribs[i++] = this->gl_config.accum_blue_size;
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125 }
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126
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127 if( this->gl_config.accum_alpha_size ) {
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128 attribs[i++] = GLX_ACCUM_ALPHA_SIZE;
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129 attribs[i++] = this->gl_config.accum_alpha_size;
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130 }
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131
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132 if( this->gl_config.stereo ) {
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133 attribs[i++] = GLX_STEREO;
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134 attribs[i++] = this->gl_config.stereo;
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135 }
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136
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137 if( this->gl_config.multisamplebuffers ) {
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138 attribs[i++] = GLX_SAMPLE_BUFFERS_ARB;
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139 attribs[i++] = this->gl_config.multisamplebuffers;
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140 }
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141
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142 if( this->gl_config.multisamplesamples ) {
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143 attribs[i++] = GLX_SAMPLES_ARB;
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144 attribs[i++] = this->gl_config.multisamplesamples;
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145 }
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146
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147 #ifdef GLX_DIRECT_COLOR /* Try for a DirectColor visual for gamma support */
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148 attribs[i++] = GLX_X_VISUAL_TYPE;
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149 attribs[i++] = GLX_DIRECT_COLOR;
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150 #endif
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151 attribs[i++] = None;
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152
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153 glx_visualinfo = this->gl_data->glXChooseVisual(GFX_Display,
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154 SDL_Screen, attribs);
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155 #ifdef GLX_DIRECT_COLOR
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156 if( !glx_visualinfo ) { /* No DirectColor visual? Try again.. */
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157 attribs[i-3] = None;
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158 glx_visualinfo = this->gl_data->glXChooseVisual(GFX_Display,
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159 SDL_Screen, attribs);
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160 }
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161 #endif
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162 if( !glx_visualinfo ) {
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163 SDL_SetError( "Couldn't find matching GLX visual");
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164 return NULL;
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165 }
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166 return glx_visualinfo;
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167 #else
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168 SDL_SetError("X11 driver not configured with OpenGL");
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169 return NULL;
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170 #endif
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171 }
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172
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173 int X11_GL_CreateWindow(_THIS, int w, int h)
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174 {
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175 int retval;
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176 #ifdef HAVE_OPENGL
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177 XSetWindowAttributes attributes;
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178 unsigned long mask;
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179 unsigned long black;
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180
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181 black = (glx_visualinfo->visual == DefaultVisual(SDL_Display,
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182 SDL_Screen))
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183 ? BlackPixel(SDL_Display, SDL_Screen) : 0;
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184 attributes.background_pixel = black;
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185 attributes.border_pixel = black;
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186 attributes.colormap = SDL_XColorMap;
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187 mask = CWBackPixel | CWBorderPixel | CWColormap;
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188
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189 SDL_Window = XCreateWindow(SDL_Display, WMwindow,
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190 0, 0, w, h, 0, glx_visualinfo->depth,
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191 InputOutput, glx_visualinfo->visual,
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192 mask, &attributes);
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193 if ( !SDL_Window ) {
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194 SDL_SetError("Could not create window");
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195 return -1;
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196 }
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197 retval = 0;
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198 #else
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199 SDL_SetError("X11 driver not configured with OpenGL");
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200 retval = -1;
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201 #endif
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202 return(retval);
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203 }
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204
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205 int X11_GL_CreateContext(_THIS)
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206 {
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207 int retval;
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208 #ifdef HAVE_OPENGL
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209 /* We do this to create a clean separation between X and GLX errors. */
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210 XSync( SDL_Display, False );
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211 glx_context = this->gl_data->glXCreateContext(GFX_Display,
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212 glx_visualinfo, NULL, True);
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213 XSync( GFX_Display, False );
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214
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215 if (glx_context == NULL) {
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diff changeset
216 SDL_SetError("Could not create GL context");
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217 return -1;
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218 }
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219
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220 gl_active = 1;
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221 #else
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222 SDL_SetError("X11 driver not configured with OpenGL");
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diff changeset
223 #endif
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diff changeset
224 if ( gl_active ) {
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225 retval = 0;
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226 } else {
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227 retval = -1;
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diff changeset
228 }
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229 return(retval);
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230 }
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231
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diff changeset
232 void X11_GL_Shutdown(_THIS)
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233 {
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234 #ifdef HAVE_OPENGL
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235 /* Clean up OpenGL */
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diff changeset
236 if( glx_context ) {
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237 this->gl_data->glXMakeCurrent(GFX_Display, None, NULL);
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238
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diff changeset
239 if (glx_context != NULL)
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diff changeset
240 this->gl_data->glXDestroyContext(GFX_Display, glx_context);
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241
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242 if( this->gl_data->glXReleaseBuffersMESA ) {
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243 this->gl_data->glXReleaseBuffersMESA(GFX_Display,SDL_Window);
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244 }
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245 glx_context = NULL;
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246 }
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247 gl_active = 0;
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248 #endif /* HAVE_OPENGL */
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249 }
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250
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diff changeset
251 #ifdef HAVE_OPENGL
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252
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
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diff changeset
253 static int ExtensionSupported(const char *extension)
638
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254 {
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diff changeset
255 const GLubyte *extensions = NULL;
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256 const GLubyte *start;
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257 GLubyte *where, *terminator;
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258
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diff changeset
259 /* Extension names should not have spaces. */
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260 where = (GLubyte *) strchr(extension, ' ');
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261 if (where || *extension == '\0')
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diff changeset
262 return 0;
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diff changeset
263
643
564716cfb502 Removed direct dependency on OpenGL (call current_video->glGetString() instead
Ryan C. Gordon <icculus@icculus.org>
parents: 638
diff changeset
264 extensions = current_video->glGetString(GL_EXTENSIONS);
638
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diff changeset
265 /* It takes a bit of care to be fool-proof about parsing the
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266 * OpenGL extensions string. Don't be fooled by sub-strings,
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diff changeset
267 * etc. */
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diff changeset
268
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diff changeset
269 start = extensions;
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diff changeset
270
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diff changeset
271 for (;;)
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diff changeset
272 {
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diff changeset
273 where = (GLubyte *) strstr((const char *) start, extension);
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diff changeset
274 if (!where) break;
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diff changeset
275
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diff changeset
276 terminator = where + strlen(extension);
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diff changeset
277 if (where == start || *(where - 1) == ' ')
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diff changeset
278 if (*terminator == ' ' || *terminator == '\0') return 1;
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diff changeset
279
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diff changeset
280 start = terminator;
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diff changeset
281 }
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diff changeset
282
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
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diff changeset
283 return 0;
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diff changeset
284 }
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diff changeset
285
0
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diff changeset
286 /* Make the current context active */
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parents:
diff changeset
287 int X11_GL_MakeCurrent(_THIS)
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diff changeset
288 {
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diff changeset
289 int retval;
638
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diff changeset
290
0
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diff changeset
291 retval = 0;
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parents:
diff changeset
292 if ( ! this->gl_data->glXMakeCurrent(GFX_Display,
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parents:
diff changeset
293 SDL_Window, glx_context) ) {
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diff changeset
294 SDL_SetError("Unable to make GL context current");
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diff changeset
295 retval = -1;
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diff changeset
296 }
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diff changeset
297 XSync( GFX_Display, False );
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diff changeset
298
638
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diff changeset
299 /*
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
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diff changeset
300 * The context is now current, check for glXReleaseBuffersMESA()
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
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diff changeset
301 * extension. If extension is _not_ supported, destroy the pointer
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diff changeset
302 * (to make sure it will not be called in X11_GL_Shutdown() ).
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
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diff changeset
303 *
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
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diff changeset
304 * DRI/Mesa drivers include glXReleaseBuffersMESA() in the libGL.so,
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
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diff changeset
305 * but there's no need to call it (is is only needed for some old
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 566
diff changeset
306 * non-DRI drivers).
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
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diff changeset
307 *
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
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diff changeset
308 * When using for example glew (http://glew.sf.net), dlsym() for
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
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diff changeset
309 * glXReleaseBuffersMESA() returns the pointer from the glew library
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
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diff changeset
310 * (namespace conflict).
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 566
diff changeset
311 *
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 566
diff changeset
312 * The glXReleaseBuffersMESA() pointer in the glew is NULL, if the
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 566
diff changeset
313 * driver doesn't support this extension. So blindly calling it will
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 566
diff changeset
314 * cause segfault with DRI/Mesa drivers!
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 566
diff changeset
315 *
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 566
diff changeset
316 */
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 566
diff changeset
317
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 646
diff changeset
318 if ( ! ExtensionSupported("glXReleaseBuffersMESA") ) {
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 646
diff changeset
319 this->gl_data->glXReleaseBuffersMESA = NULL;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 646
diff changeset
320 }
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 646
diff changeset
321
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
322 /* More Voodoo X server workarounds... Grr... */
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
323 SDL_Lock_EventThread();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
324 X11_CheckDGAMouse(this);
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
325 SDL_Unlock_EventThread();
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
326
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
327 return(retval);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
328 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
329
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
330 /* Get attribute data from glX. */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
331 int X11_GL_GetAttribute(_THIS, SDL_GLattr attrib, int* value)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
332 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
333 int retval;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
334 int glx_attrib = None;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
335
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
336 switch( attrib ) {
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Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
337 case SDL_GL_RED_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
338 glx_attrib = GLX_RED_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
339 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
340 case SDL_GL_GREEN_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
341 glx_attrib = GLX_GREEN_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
342 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
343 case SDL_GL_BLUE_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
344 glx_attrib = GLX_BLUE_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
345 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
346 case SDL_GL_ALPHA_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
347 glx_attrib = GLX_ALPHA_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
348 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
349 case SDL_GL_DOUBLEBUFFER:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
350 glx_attrib = GLX_DOUBLEBUFFER;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
351 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
352 case SDL_GL_BUFFER_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
353 glx_attrib = GLX_BUFFER_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
354 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
355 case SDL_GL_DEPTH_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
356 glx_attrib = GLX_DEPTH_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
357 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
358 case SDL_GL_STENCIL_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
359 glx_attrib = GLX_STENCIL_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
360 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
361 case SDL_GL_ACCUM_RED_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
362 glx_attrib = GLX_ACCUM_RED_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
363 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
364 case SDL_GL_ACCUM_GREEN_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
365 glx_attrib = GLX_ACCUM_GREEN_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
366 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
367 case SDL_GL_ACCUM_BLUE_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
368 glx_attrib = GLX_ACCUM_BLUE_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
369 break;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
370 case SDL_GL_ACCUM_ALPHA_SIZE:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
371 glx_attrib = GLX_ACCUM_ALPHA_SIZE;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
372 break;
450
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
373 case SDL_GL_STEREO:
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
374 glx_attrib = GLX_STEREO;
8a43e0cbf02f Added SDL_GL_STEREO for stereoscopic OpenGL contexts
Sam Lantinga <slouken@libsdl.org>
parents: 297
diff changeset
375 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
376 case SDL_GL_MULTISAMPLEBUFFERS:
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 646
diff changeset
377 glx_attrib = GLX_SAMPLE_BUFFERS_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 646
diff changeset
378 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
379 case SDL_GL_MULTISAMPLESAMPLES:
655
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 646
diff changeset
380 glx_attrib = GLX_SAMPLES_ARB;
9c42ee1b7d77 Date: Thu, 24 Apr 2003 15:13:47 -0400
Sam Lantinga <slouken@libsdl.org>
parents: 646
diff changeset
381 break;
0
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
382 default:
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
383 return(-1);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
384 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
385
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
386 retval = this->gl_data->glXGetConfig(GFX_Display, glx_visualinfo, glx_attrib, value);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
387
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
388 return retval;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
389 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
390
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
391 void X11_GL_SwapBuffers(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
392 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
393 this->gl_data->glXSwapBuffers(GFX_Display, SDL_Window);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
394 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
395
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
396 #endif /* HAVE_OPENGL */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
397
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
398 void X11_GL_UnloadLibrary(_THIS)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
399 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
400 #ifdef HAVE_OPENGL
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
401 if ( this->gl_config.driver_loaded ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
402 dlclose(this->gl_config.dll_handle);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
403
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
404 this->gl_data->glXGetProcAddress = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
405 this->gl_data->glXChooseVisual = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
406 this->gl_data->glXCreateContext = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
407 this->gl_data->glXDestroyContext = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
408 this->gl_data->glXMakeCurrent = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
409 this->gl_data->glXSwapBuffers = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
410
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
411 this->gl_config.dll_handle = NULL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
412 this->gl_config.driver_loaded = 0;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
413 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
414 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
415 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
416
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
417 #ifdef HAVE_OPENGL
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
418
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
419 /* Passing a NULL path means load pointers from the application */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
420 int X11_GL_LoadLibrary(_THIS, const char* path)
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
421 {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
422 void* handle;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
423 int dlopen_flags;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
424
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
425 if ( gl_active ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
426 SDL_SetError("OpenGL context already created");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
427 return -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
428 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
429
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
430 #ifdef RTLD_GLOBAL
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
431 dlopen_flags = RTLD_LAZY | RTLD_GLOBAL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
432 #else
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
433 dlopen_flags = RTLD_LAZY;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
434 #endif
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
435 handle = dlopen(path, dlopen_flags);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
436 /* Catch the case where the application isn't linked with GL */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
437 if ( (dlsym(handle, "glXChooseVisual") == NULL) && (path == NULL) ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
438 dlclose(handle);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
439 path = getenv("SDL_VIDEO_GL_DRIVER");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
440 if ( path == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
441 path = DEFAULT_OPENGL;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
442 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
443 handle = dlopen(path, dlopen_flags);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
444 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
445 if ( handle == NULL ) {
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
446 SDL_SetError("Could not load OpenGL library");
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
447 return -1;
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
448 }
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
449
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
450 /* Unload the old driver and reset the pointers */
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
451 X11_GL_UnloadLibrary(this);
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
452
74212992fb08 Initial revision
Sam Lantinga <slouken@lokigames.com>
parents:
diff changeset
453 /* Load new function pointers */
180
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
454 this->gl_data->glXGetProcAddress =
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
455 (void *(*)(const GLubyte *)) dlsym(handle, "glXGetProcAddressARB");
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
456 this->gl_data->glXChooseVisual =
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
457 (XVisualInfo *(*)(Display *, int, int *)) dlsym(handle, "glXChooseVisual");
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
458 this->gl_data->glXCreateContext =
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
459 (GLXContext (*)(Display *, XVisualInfo *, GLXContext, int)) dlsym(handle, "glXCreateContext");
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
460 this->gl_data->glXDestroyContext =
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
461 (void (*)(Display *, GLXContext)) dlsym(handle, "glXDestroyContext");
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
462 this->gl_data->glXMakeCurrent =
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
463 (int (*)(Display *, GLXDrawable, GLXContext)) dlsym(handle, "glXMakeCurrent");
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
464 this->gl_data->glXSwapBuffers =
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
465 (void (*)(Display *, GLXDrawable)) dlsym(handle, "glXSwapBuffers");
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
466 this->gl_data->glXGetConfig =
578815880307 Do proper typecasting so this compiles on IRIX
Sam Lantinga <slouken@libsdl.org>
parents: 127
diff changeset
467 (int (*)(Display *, XVisualInfo *, int, int *)) dlsym(handle, "glXGetConfig");
638
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
Sam Lantinga <slouken@libsdl.org>
parents: 566
diff changeset
468 this->gl_data->glXQueryExtensionsString =
646
0f2029a70548 Fixed incorrect prototype for glXQueryExtensionsString()
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469 (const char *(*)(Display *, int)) dlsym(handle, "glXQueryExtensionsString");
638
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470
0
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471 /* We don't compare below for this in case we're not using Mesa. */
180
578815880307 Do proper typecasting so this compiles on IRIX
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472 this->gl_data->glXReleaseBuffersMESA =
578815880307 Do proper typecasting so this compiles on IRIX
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parents: 127
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473 (void (*)(Display *, GLXDrawable)) dlsym( handle, "glXReleaseBuffersMESA" );
638
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parents: 566
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474
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
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475
0
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476 if ( (this->gl_data->glXChooseVisual == NULL) ||
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477 (this->gl_data->glXCreateContext == NULL) ||
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478 (this->gl_data->glXDestroyContext == NULL) ||
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479 (this->gl_data->glXMakeCurrent == NULL) ||
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480 (this->gl_data->glXSwapBuffers == NULL) ||
638
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
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parents: 566
diff changeset
481 (this->gl_data->glXGetConfig == NULL) ||
b0108e9dea53 Date: Sun, 11 May 2003 19:59:06 +0300
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parents: 566
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482 (this->gl_data->glXQueryExtensionsString == NULL)) {
0
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483 SDL_SetError("Could not retrieve OpenGL functions");
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484 return -1;
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parents:
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485 }
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486
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487 this->gl_config.dll_handle = handle;
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488 this->gl_config.driver_loaded = 1;
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489 if ( path ) {
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490 strncpy(this->gl_config.driver_path, path,
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491 sizeof(this->gl_config.driver_path)-1);
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492 } else {
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parents:
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493 strcpy(this->gl_config.driver_path, "");
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parents:
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494 }
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495 return 0;
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parents:
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496 }
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497
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498 void *X11_GL_GetProcAddress(_THIS, const char* proc)
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499 {
110
7edee9f0f2cc SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents: 29
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500 static char procname[1024];
0
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parents:
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501 void* handle;
110
7edee9f0f2cc SDL GL dynamic loading fix for OpenBSD
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parents: 29
diff changeset
502 void* retval;
0
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503
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504 handle = this->gl_config.dll_handle;
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505 if ( this->gl_data->glXGetProcAddress ) {
566
d6e7d7006062 Enable the glXGetProcAddressARB code (fixes problems with NVidia drivers)
Sam Lantinga <slouken@libsdl.org>
parents: 450
diff changeset
506 return this->gl_data->glXGetProcAddress(proc);
0
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parents:
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507 }
110
7edee9f0f2cc SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents: 29
diff changeset
508 #if defined(__OpenBSD__) && !defined(__ELF__)
7edee9f0f2cc SDL GL dynamic loading fix for OpenBSD
Sam Lantinga <slouken@lokigames.com>
parents: 29
diff changeset
509 #undef dlsym(x,y);
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parents: 29
diff changeset
510 #endif
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parents: 29
diff changeset
511 retval = dlsym(handle, proc);
7edee9f0f2cc SDL GL dynamic loading fix for OpenBSD
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parents: 29
diff changeset
512 if (!retval && strlen(proc) <= 1022) {
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0bcae11eba14 Oops, that wasn't right...
Sam Lantinga <slouken@libsdl.org>
parents: 110
diff changeset
513 procname[0] = '_';
110
7edee9f0f2cc SDL GL dynamic loading fix for OpenBSD
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parents: 29
diff changeset
514 strcpy(procname + 1, proc);
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Sam Lantinga <slouken@lokigames.com>
parents: 29
diff changeset
515 retval = dlsym(handle, procname);
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parents: 29
diff changeset
516 }
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parents: 29
diff changeset
517 return retval;
0
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518 }
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parents:
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519
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parents:
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520 #endif /* HAVE_OPENGL */