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annotate src/video/quartz/SDL_QuartzGL.m @ 946:8520712f8ef0

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*** empty log message ***
author Sam Lantinga <slouken@libsdl.org>
date Sat, 21 Aug 2004 14:54:49 +0000
parents c3c8739f7844
children 72c6c3e5bb85
rev   line source
761
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1 /*
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2 SDL - Simple DirectMedia Layer
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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
761
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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
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105 attr[i++] = NSOpenGLPFANoRecovery;
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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
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122 if (gl_context == nil) {
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123 SDL_SetError ("Failed creating OpenGL context");
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124 return 0;
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125 }
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126
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127 /*
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128 * Wisdom from Apple engineer in reference to UT2003's OpenGL performance:
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129 * "You are blowing a couple of the internal OpenGL function caches. This
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130 * appears to be happening in the VAO case. You can tell OpenGL to up
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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131 * the cache size by issuing the following calls right after you create
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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132 * the OpenGL context. The default cache size is 16." --ryan.
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133 */
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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134
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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135 #ifndef GLI_ARRAY_FUNC_CACHE_MAX
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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136 #define GLI_ARRAY_FUNC_CACHE_MAX 284
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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137 #endif
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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138
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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139 #ifndef GLI_SUBMIT_FUNC_CACHE_MAX
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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140 #define GLI_SUBMIT_FUNC_CACHE_MAX 280
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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141 #endif
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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142
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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143 {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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144 long cache_max = 64;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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145 CGLContextObj ctx = [ gl_context cglContext ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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146 CGLSetParameter (ctx, GLI_SUBMIT_FUNC_CACHE_MAX, &cache_max);
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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147 CGLSetParameter (ctx, GLI_ARRAY_FUNC_CACHE_MAX, &cache_max);
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148 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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149
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150 /* End Wisdom from Apple Engineer section. --ryan. */
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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151
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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152 /* Convince SDL that the GL "driver" is loaded */
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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153 this->gl_config.driver_loaded = 1;
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154
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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155 [ fmt release ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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156
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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157 return 1;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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158 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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159
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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160 void QZ_TearDownOpenGL (_THIS) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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161
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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162 [ NSOpenGLContext clearCurrentContext ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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163 [ gl_context clearDrawable ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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164 [ gl_context release ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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165 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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166
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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167
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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168 /* SDL OpenGL functions */
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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169
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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170 int QZ_GL_LoadLibrary (_THIS, const char *location) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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171 this->gl_config.driver_loaded = 1;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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172 return 1;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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173 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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174
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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175 void* QZ_GL_GetProcAddress (_THIS, const char *proc) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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176
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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177 /* We may want to cache the bundleRef at some point */
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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178 CFBundleRef bundle;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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179 CFURLRef bundleURL = CFURLCreateWithFileSystemPath (kCFAllocatorDefault,
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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180 CFSTR("/System/Library/Frameworks/OpenGL.framework"), kCFURLPOSIXPathStyle, true);
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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181
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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182 CFStringRef functionName = CFStringCreateWithCString
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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183 (kCFAllocatorDefault, proc, kCFStringEncodingASCII);
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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184
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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185 void *function;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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186
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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187 bundle = CFBundleCreate (kCFAllocatorDefault, bundleURL);
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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188 assert (bundle != NULL);
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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189
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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190 function = CFBundleGetFunctionPointerForName (bundle, functionName);
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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191
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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192 CFRelease ( bundleURL );
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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193 CFRelease ( functionName );
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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194 CFRelease ( bundle );
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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195
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196 return function;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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197 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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198
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199 int QZ_GL_GetAttribute (_THIS, SDL_GLattr attrib, int* value) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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200
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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201 GLenum attr = 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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202
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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203 QZ_GL_MakeCurrent (this);
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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204
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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205 switch (attrib) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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206 case SDL_GL_RED_SIZE: attr = GL_RED_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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207 case SDL_GL_BLUE_SIZE: attr = GL_BLUE_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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208 case SDL_GL_GREEN_SIZE: attr = GL_GREEN_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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209 case SDL_GL_ALPHA_SIZE: attr = GL_ALPHA_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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210 case SDL_GL_DOUBLEBUFFER: attr = GL_DOUBLEBUFFER; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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211 case SDL_GL_DEPTH_SIZE: attr = GL_DEPTH_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
212 case SDL_GL_STENCIL_SIZE: attr = GL_STENCIL_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
213 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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diff changeset
214 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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215 case SDL_GL_ACCUM_BLUE_SIZE: attr = GL_ACCUM_BLUE_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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216 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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diff changeset
217 case SDL_GL_STEREO: attr = GL_STEREO; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
218 case SDL_GL_MULTISAMPLEBUFFERS: attr = GL_SAMPLE_BUFFERS_ARB; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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219 case SDL_GL_MULTISAMPLESAMPLES: attr = GL_SAMPLES_ARB; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
220 case SDL_GL_BUFFER_SIZE:
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
221 {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
222 GLint bits = 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
223 GLint component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
224
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
225 /* 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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226 glGetIntegerv (GL_RED_BITS, &component); bits += component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
227 glGetIntegerv (GL_GREEN_BITS,&component); bits += component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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228 glGetIntegerv (GL_BLUE_BITS, &component); bits += component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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229 glGetIntegerv (GL_ALPHA_BITS, &component); bits += component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
230
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
231 *value = bits;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
232 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
233 return 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
234 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
235
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
236 glGetIntegerv (attr, (GLint *)value);
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
237 return 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
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diff changeset
238 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
239
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
240 int QZ_GL_MakeCurrent (_THIS) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
241 [ gl_context makeCurrentContext ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
242 return 0;
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>
parents:
diff changeset
244
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
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diff changeset
245 void QZ_GL_SwapBuffers (_THIS) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
246 [ gl_context flushBuffer ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
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diff changeset
247 }