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annotate src/video/quartz/SDL_QuartzGL.m @ 1189:c96b326b90ba

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Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
author Ryan C. Gordon <icculus@icculus.org>
date Wed, 23 Nov 2005 07:23:48 +0000
parents 49d3efec6651
children bb6791b0a268
rev   line source
761
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Sam Lantinga <slouken@libsdl.org>
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1 /*
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2 SDL - Simple DirectMedia Layer
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Sam Lantinga <slouken@libsdl.org>
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3 Copyright (C) 1997-2003 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 #include "SDL_QuartzVideo.h"
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24
857
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25 /*
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26 * GL_ARB_Multisample is supposed to be available in 10.1, according to Apple:
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27 *
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28 * http://developer.apple.com/opengl/extensions.html#GL_ARB_multisample
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29 *
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30 * ...but it isn't in the system headers, according to Sam:
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31 *
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32 * http://www.libsdl.org/pipermail/sdl/2003-December/058335.html
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33 *
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34 * These are normally enums and not #defines in the system headers.
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35 *
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36 * --ryan.
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37 */
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38 #if (MAC_OS_X_VERSION_MAX_ALLOWED < 1020)
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39 #define NSOpenGLPFASampleBuffers ((NSOpenGLPixelFormatAttribute) 55)
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40 #define NSOpenGLPFASamples ((NSOpenGLPixelFormatAttribute) 56)
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41 #endif
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42
761
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43
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44 @implementation NSOpenGLContext (CGLContextAccess)
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45 - (CGLContextObj) cglContext;
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46 {
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47 return _contextAuxiliary;
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48 }
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49 @end
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50
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51 /* OpenGL helper functions (used internally) */
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52
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53 int QZ_SetupOpenGL (_THIS, int bpp, Uint32 flags) {
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54
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55 NSOpenGLPixelFormatAttribute attr[32];
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56 NSOpenGLPixelFormat *fmt;
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57 int i = 0;
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58 int colorBits = bpp;
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59
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60 if ( flags & SDL_FULLSCREEN ) {
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61
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62 attr[i++] = NSOpenGLPFAFullScreen;
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63 }
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64 /* In windowed mode, the OpenGL pixel depth must match device pixel depth */
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65 else if ( colorBits != device_bpp ) {
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66
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67 colorBits = device_bpp;
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68 }
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69
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70 attr[i++] = NSOpenGLPFAColorSize;
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71 attr[i++] = colorBits;
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72
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73 attr[i++] = NSOpenGLPFADepthSize;
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74 attr[i++] = this->gl_config.depth_size;
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75
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76 if ( this->gl_config.double_buffer ) {
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77 attr[i++] = NSOpenGLPFADoubleBuffer;
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78 }
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79
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80 if ( this->gl_config.stereo ) {
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81 attr[i++] = NSOpenGLPFAStereo;
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82 }
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83
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84 if ( this->gl_config.stencil_size != 0 ) {
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85 attr[i++] = NSOpenGLPFAStencilSize;
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86 attr[i++] = this->gl_config.stencil_size;
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87 }
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88
890
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89 if ( (this->gl_config.accum_red_size +
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90 this->gl_config.accum_green_size +
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91 this->gl_config.accum_blue_size +
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92 this->gl_config.accum_alpha_size) > 0 ) {
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93 attr[i++] = NSOpenGLPFAAccumSize;
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94 attr[i++] = this->gl_config.accum_red_size + this->gl_config.accum_green_size + this->gl_config.accum_blue_size + this->gl_config.accum_alpha_size;
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95 }
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96
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97 if ( this->gl_config.multisamplebuffers != 0 ) {
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98 attr[i++] = NSOpenGLPFASampleBuffers;
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99 attr[i++] = this->gl_config.multisamplebuffers;
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100 }
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101
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102 if ( this->gl_config.multisamplesamples != 0 ) {
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103 attr[i++] = NSOpenGLPFASamples;
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104 attr[i++] = this->gl_config.multisamplesamples;
900
c3c8739f7844 *** empty log message ***
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105 attr[i++] = NSOpenGLPFANoRecovery;
c3c8739f7844 *** empty log message ***
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106 attr[i++] = (NSOpenGLPixelFormatAttribute)nil;
761
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107 }
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108
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109 attr[i++] = NSOpenGLPFAScreenMask;
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110 attr[i++] = CGDisplayIDToOpenGLDisplayMask (display_id);
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111 attr[i] = 0;
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112
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113 fmt = [ [ NSOpenGLPixelFormat alloc ] initWithAttributes:attr ];
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114 if (fmt == nil) {
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115 SDL_SetError ("Failed creating OpenGL pixel format");
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116 return 0;
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117 }
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118
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119 gl_context = [ [ NSOpenGLContext alloc ] initWithFormat:fmt
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120 shareContext:nil];
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121
1160
72c6c3e5bb85 Closed a memory leak caused when quitting video subsystem on Quartz target.
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122 [ fmt release ];
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123
761
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124 if (gl_context == nil) {
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125 SDL_SetError ("Failed creating OpenGL context");
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126 return 0;
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127 }
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128
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129 /*
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130 * Wisdom from Apple engineer in reference to UT2003's OpenGL performance:
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131 * "You are blowing a couple of the internal OpenGL function caches. This
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132 * appears to be happening in the VAO case. You can tell OpenGL to up
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133 * the cache size by issuing the following calls right after you create
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134 * the OpenGL context. The default cache size is 16." --ryan.
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135 */
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136
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137 #ifndef GLI_ARRAY_FUNC_CACHE_MAX
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138 #define GLI_ARRAY_FUNC_CACHE_MAX 284
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139 #endif
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140
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141 #ifndef GLI_SUBMIT_FUNC_CACHE_MAX
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142 #define GLI_SUBMIT_FUNC_CACHE_MAX 280
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143 #endif
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144
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145 {
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146 long cache_max = 64;
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147 CGLContextObj ctx = [ gl_context cglContext ];
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148 CGLSetParameter (ctx, GLI_SUBMIT_FUNC_CACHE_MAX, &cache_max);
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149 CGLSetParameter (ctx, GLI_ARRAY_FUNC_CACHE_MAX, &cache_max);
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150 }
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151
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152 /* End Wisdom from Apple Engineer section. --ryan. */
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153
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154 /* Convince SDL that the GL "driver" is loaded */
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155 this->gl_config.driver_loaded = 1;
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156
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157 return 1;
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158 }
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159
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160 void QZ_TearDownOpenGL (_THIS) {
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161
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162 [ NSOpenGLContext clearCurrentContext ];
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163 [ gl_context clearDrawable ];
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164 [ gl_context release ];
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165 }
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166
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167
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168 /* SDL OpenGL functions */
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169 static const char *DEFAULT_OPENGL_LIB_NAME =
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170 "/System/Library/Frameworks/OpenGL.framework/Libraries/libGL.dylib";
761
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171
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172 int QZ_GL_LoadLibrary (_THIS, const char *location) {
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173 if ( gl_context != NULL ) {
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174 SDL_SetError("OpenGL context already created");
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175 return -1;
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176 }
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177
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178 if (opengl_library != NULL)
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179 SDL_UnloadObject(opengl_library);
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180
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181 if (location == NULL)
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182 location = DEFAULT_OPENGL_LIB_NAME;
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183
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184 opengl_library = SDL_LoadObject(location);
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185 if (opengl_library != NULL) {
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186 this->gl_config.driver_loaded = 1;
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187 return 0;
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188 }
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189
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190 this->gl_config.driver_loaded = 0;
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191 return -1;
761
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192 }
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193
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194 void* QZ_GL_GetProcAddress (_THIS, const char *proc) {
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195 return SDL_LoadFunction(opengl_library, proc);
761
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196 }
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197
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198 int QZ_GL_GetAttribute (_THIS, SDL_GLattr attrib, int* value) {
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199
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200 GLenum attr = 0;
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201
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202 QZ_GL_MakeCurrent (this);
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203
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204 switch (attrib) {
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205 case SDL_GL_RED_SIZE: attr = GL_RED_BITS; break;
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206 case SDL_GL_BLUE_SIZE: attr = GL_BLUE_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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207 case SDL_GL_GREEN_SIZE: attr = GL_GREEN_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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208 case SDL_GL_ALPHA_SIZE: attr = GL_ALPHA_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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209 case SDL_GL_DOUBLEBUFFER: attr = GL_DOUBLEBUFFER; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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210 case SDL_GL_DEPTH_SIZE: attr = GL_DEPTH_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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211 case SDL_GL_STENCIL_SIZE: attr = GL_STENCIL_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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212 case SDL_GL_ACCUM_RED_SIZE: attr = GL_ACCUM_RED_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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213 case SDL_GL_ACCUM_GREEN_SIZE: attr = GL_ACCUM_GREEN_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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214 case SDL_GL_ACCUM_BLUE_SIZE: attr = GL_ACCUM_BLUE_BITS; break;
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215 case SDL_GL_ACCUM_ALPHA_SIZE: attr = GL_ACCUM_ALPHA_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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216 case SDL_GL_STEREO: attr = GL_STEREO; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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217 case SDL_GL_MULTISAMPLEBUFFERS: attr = GL_SAMPLE_BUFFERS_ARB; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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218 case SDL_GL_MULTISAMPLESAMPLES: attr = GL_SAMPLES_ARB; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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219 case SDL_GL_BUFFER_SIZE:
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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220 {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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221 GLint bits = 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
222 GLint component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
223
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diff changeset
224 /* there doesn't seem to be a single flag in OpenGL for this! */
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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225 glGetIntegerv (GL_RED_BITS, &component); bits += component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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226 glGetIntegerv (GL_GREEN_BITS,&component); bits += component;
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227 glGetIntegerv (GL_BLUE_BITS, &component); bits += component;
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228 glGetIntegerv (GL_ALPHA_BITS, &component); bits += component;
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diff changeset
229
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diff changeset
230 *value = bits;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
231 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
232 return 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
233 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
234
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
235 glGetIntegerv (attr, (GLint *)value);
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diff changeset
236 return 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
237 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
238
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
239 int QZ_GL_MakeCurrent (_THIS) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
240 [ gl_context makeCurrentContext ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
241 return 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
242 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
243
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
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diff changeset
244 void QZ_GL_SwapBuffers (_THIS) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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245 [ gl_context flushBuffer ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
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246 }