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annotate src/video/quartz/SDL_QuartzGL.m @ 1400:5abff0870de2

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Date: Mon, 20 Feb 2006 19:54:51 -0500 From: Brian Barnes Subject: [SDL] Fix for FSAA OS X bug -- Please fix in CVS Code I stopped complaining and went in an fixed the bug myself :) SDL always dies if you try to use FSAA on Mac OS X, the problem is in the file: SDL_QuartzGL.m
author Sam Lantinga <slouken@libsdl.org>
date Tue, 21 Feb 2006 02:42:05 +0000
parents bb6791b0a268
children 376665398b25
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2003 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 a GL library hasn't been loaded at this point, load the default. */
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61 if (!this->gl_config.driver_loaded) {
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62 if (QZ_GL_LoadLibrary(this, NULL) == -1)
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63 return 0;
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64 }
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65
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66 if ( flags & SDL_FULLSCREEN ) {
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67
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68 attr[i++] = NSOpenGLPFAFullScreen;
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69 }
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70 /* In windowed mode, the OpenGL pixel depth must match device pixel depth */
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71 else if ( colorBits != device_bpp ) {
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72
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73 colorBits = device_bpp;
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74 }
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75
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76 attr[i++] = NSOpenGLPFAColorSize;
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77 attr[i++] = colorBits;
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78
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79 attr[i++] = NSOpenGLPFADepthSize;
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80 attr[i++] = this->gl_config.depth_size;
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81
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82 if ( this->gl_config.double_buffer ) {
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83 attr[i++] = NSOpenGLPFADoubleBuffer;
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84 }
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85
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86 if ( this->gl_config.stereo ) {
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87 attr[i++] = NSOpenGLPFAStereo;
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88 }
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89
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90 if ( this->gl_config.stencil_size != 0 ) {
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91 attr[i++] = NSOpenGLPFAStencilSize;
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92 attr[i++] = this->gl_config.stencil_size;
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93 }
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94
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95 if ( (this->gl_config.accum_red_size +
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96 this->gl_config.accum_green_size +
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97 this->gl_config.accum_blue_size +
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98 this->gl_config.accum_alpha_size) > 0 ) {
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99 attr[i++] = NSOpenGLPFAAccumSize;
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100 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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101 }
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102
761
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103 if ( this->gl_config.multisamplebuffers != 0 ) {
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104 attr[i++] = NSOpenGLPFASampleBuffers;
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105 attr[i++] = this->gl_config.multisamplebuffers;
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106 }
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107
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108 if ( this->gl_config.multisamplesamples != 0 ) {
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109 attr[i++] = NSOpenGLPFASamples;
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110 attr[i++] = this->gl_config.multisamplesamples;
900
c3c8739f7844 *** empty log message ***
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111 attr[i++] = NSOpenGLPFANoRecovery;
761
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112 }
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113
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114 attr[i++] = NSOpenGLPFAScreenMask;
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115 attr[i++] = CGDisplayIDToOpenGLDisplayMask (display_id);
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116 attr[i] = 0;
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117
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118 fmt = [ [ NSOpenGLPixelFormat alloc ] initWithAttributes:attr ];
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119 if (fmt == nil) {
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120 SDL_SetError ("Failed creating OpenGL pixel format");
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121 return 0;
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122 }
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123
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124 gl_context = [ [ NSOpenGLContext alloc ] initWithFormat:fmt
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125 shareContext:nil];
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126
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72c6c3e5bb85 Closed a memory leak caused when quitting video subsystem on Quartz target.
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127 [ fmt release ];
72c6c3e5bb85 Closed a memory leak caused when quitting video subsystem on Quartz target.
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diff changeset
128
761
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129 if (gl_context == nil) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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130 SDL_SetError ("Failed creating OpenGL context");
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131 return 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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132 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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133
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134 /*
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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135 * Wisdom from Apple engineer in reference to UT2003's OpenGL performance:
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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136 * "You are blowing a couple of the internal OpenGL function caches. This
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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137 * 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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138 * 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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139 * the OpenGL context. The default cache size is 16." --ryan.
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140 */
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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141
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142 #ifndef GLI_ARRAY_FUNC_CACHE_MAX
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143 #define GLI_ARRAY_FUNC_CACHE_MAX 284
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144 #endif
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145
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146 #ifndef GLI_SUBMIT_FUNC_CACHE_MAX
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147 #define GLI_SUBMIT_FUNC_CACHE_MAX 280
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148 #endif
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149
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150 {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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151 long cache_max = 64;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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152 CGLContextObj ctx = [ gl_context cglContext ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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153 CGLSetParameter (ctx, GLI_SUBMIT_FUNC_CACHE_MAX, &cache_max);
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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154 CGLSetParameter (ctx, GLI_ARRAY_FUNC_CACHE_MAX, &cache_max);
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155 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
156
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157 /* End Wisdom from Apple Engineer section. --ryan. */
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 return 1;
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160 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
161
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diff changeset
162 void QZ_TearDownOpenGL (_THIS) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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163
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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164 [ NSOpenGLContext clearCurrentContext ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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165 [ gl_context clearDrawable ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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166 [ gl_context release ];
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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diff changeset
168
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diff changeset
169
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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170 /* SDL OpenGL functions */
1189
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
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171 static const char *DEFAULT_OPENGL_LIB_NAME =
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
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172 "/System/Library/Frameworks/OpenGL.framework/Libraries/libGL.dylib";
761
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173
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174 int QZ_GL_LoadLibrary (_THIS, const char *location) {
1181
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175 if ( gl_context != NULL ) {
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176 SDL_SetError("OpenGL context already created");
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177 return -1;
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178 }
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179
1189
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
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180 if (opengl_library != NULL)
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
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181 SDL_UnloadObject(opengl_library);
1181
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182
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183 if (location == NULL)
1189
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
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184 location = DEFAULT_OPENGL_LIB_NAME;
1181
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185
1189
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
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186 opengl_library = SDL_LoadObject(location);
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
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187 if (opengl_library != NULL) {
1181
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188 this->gl_config.driver_loaded = 1;
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189 return 0;
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190 }
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191
1189
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192 this->gl_config.driver_loaded = 0;
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193 return -1;
761
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194 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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195
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196 void* QZ_GL_GetProcAddress (_THIS, const char *proc) {
1189
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
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197 return SDL_LoadFunction(opengl_library, proc);
761
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198 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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199
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200 int QZ_GL_GetAttribute (_THIS, SDL_GLattr attrib, int* value) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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201
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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202 GLenum attr = 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
203
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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204 QZ_GL_MakeCurrent (this);
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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205
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
206 switch (attrib) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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207 case SDL_GL_RED_SIZE: attr = GL_RED_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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208 case SDL_GL_BLUE_SIZE: attr = GL_BLUE_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
209 case SDL_GL_GREEN_SIZE: attr = GL_GREEN_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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210 case SDL_GL_ALPHA_SIZE: attr = GL_ALPHA_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
211 case SDL_GL_DOUBLEBUFFER: attr = GL_DOUBLEBUFFER; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
212 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
213 case SDL_GL_STENCIL_SIZE: attr = GL_STENCIL_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
214 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
215 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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parents:
diff changeset
216 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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parents:
diff changeset
217 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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parents:
diff changeset
218 case SDL_GL_STEREO: attr = GL_STEREO; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
219 case SDL_GL_MULTISAMPLEBUFFERS: attr = GL_SAMPLE_BUFFERS_ARB; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
220 case SDL_GL_MULTISAMPLESAMPLES: attr = GL_SAMPLES_ARB; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
221 case SDL_GL_BUFFER_SIZE:
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
222 {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
223 GLint bits = 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
224 GLint component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
225
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
226 /* 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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diff changeset
227 glGetIntegerv (GL_RED_BITS, &component); bits += component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
228 glGetIntegerv (GL_GREEN_BITS,&component); bits += component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
229 glGetIntegerv (GL_BLUE_BITS, &component); bits += component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
230 glGetIntegerv (GL_ALPHA_BITS, &component); bits += component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
231
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
232 *value = bits;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
233 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
234 return 0;
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
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
236
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
237 glGetIntegerv (attr, (GLint *)value);
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
238 return 0;
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
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
240
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
241 int QZ_GL_MakeCurrent (_THIS) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
242 [ gl_context makeCurrentContext ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
243 return 0;
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>
parents:
diff changeset
245
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
246 void QZ_GL_SwapBuffers (_THIS) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
247 [ gl_context flushBuffer ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
248 }