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annotate src/video/quartz/SDL_QuartzGL.m @ 3932:cd5b5c52a37e SDL-1.2

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Const correctness patch for SDL_MapRGB and SDL_MapRGBA. Fixes Bugzilla #421.
author Ryan C. Gordon <icculus@icculus.org>
date Wed, 04 Apr 2007 09:40:40 +0000
parents acfd00fbff5c
children c121d94672cb a1b03ba2fcd0
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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376665398b25 Catch the C++ and Objective C sources too...
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22 #include "SDL_config.h"
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23
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24 #include "SDL_QuartzVideo.h"
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25
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26 /*
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27 * GL_ARB_Multisample is supposed to be available in 10.1, according to Apple:
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28 *
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29 * http://developer.apple.com/opengl/extensions.html#GL_ARB_multisample
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30 *
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31 * ...but it isn't in the system headers, according to Sam:
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32 *
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33 * http://www.libsdl.org/pipermail/sdl/2003-December/058335.html
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34 *
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35 * These are normally enums and not #defines in the system headers.
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36 *
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37 * --ryan.
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38 */
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39 #if (MAC_OS_X_VERSION_MAX_ALLOWED < 1020)
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40 #define NSOpenGLPFASampleBuffers ((NSOpenGLPixelFormatAttribute) 55)
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41 #define NSOpenGLPFASamples ((NSOpenGLPixelFormatAttribute) 56)
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42 #endif
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43
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44
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45 @implementation NSOpenGLContext (CGLContextAccess)
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46 - (CGLContextObj) cglContext;
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47 {
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48 return _contextAuxiliary;
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49 }
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50 @end
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51
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52 /* OpenGL helper functions (used internally) */
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53
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54 int QZ_SetupOpenGL (_THIS, int bpp, Uint32 flags) {
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55
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56 NSOpenGLPixelFormatAttribute attr[32];
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57 NSOpenGLPixelFormat *fmt;
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58 int i = 0;
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59 int colorBits = bpp;
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60
1195
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61 /* if a GL library hasn't been loaded at this point, load the default. */
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62 if (!this->gl_config.driver_loaded) {
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63 if (QZ_GL_LoadLibrary(this, NULL) == -1)
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64 return 0;
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65 }
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66
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67 if ( flags & SDL_FULLSCREEN ) {
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68
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69 attr[i++] = NSOpenGLPFAFullScreen;
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70 }
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71 /* In windowed mode, the OpenGL pixel depth must match device pixel depth */
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72 else if ( colorBits != device_bpp ) {
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73
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74 colorBits = device_bpp;
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75 }
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76
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77 attr[i++] = NSOpenGLPFAColorSize;
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78 attr[i++] = colorBits;
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79
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80 attr[i++] = NSOpenGLPFADepthSize;
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81 attr[i++] = this->gl_config.depth_size;
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82
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83 if ( this->gl_config.double_buffer ) {
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84 attr[i++] = NSOpenGLPFADoubleBuffer;
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85 }
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86
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87 if ( this->gl_config.stereo ) {
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88 attr[i++] = NSOpenGLPFAStereo;
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89 }
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90
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91 if ( this->gl_config.stencil_size != 0 ) {
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92 attr[i++] = NSOpenGLPFAStencilSize;
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93 attr[i++] = this->gl_config.stencil_size;
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94 }
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95
890
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96 if ( (this->gl_config.accum_red_size +
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97 this->gl_config.accum_green_size +
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98 this->gl_config.accum_blue_size +
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99 this->gl_config.accum_alpha_size) > 0 ) {
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100 attr[i++] = NSOpenGLPFAAccumSize;
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101 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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102 }
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103
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104 if ( this->gl_config.multisamplebuffers != 0 ) {
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105 attr[i++] = NSOpenGLPFASampleBuffers;
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106 attr[i++] = this->gl_config.multisamplebuffers;
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107 }
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108
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109 if ( this->gl_config.multisamplesamples != 0 ) {
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110 attr[i++] = NSOpenGLPFASamples;
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111 attr[i++] = this->gl_config.multisamplesamples;
900
c3c8739f7844 *** empty log message ***
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112 attr[i++] = NSOpenGLPFANoRecovery;
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113 }
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114
1737
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115 if ( this->gl_config.accelerated > 0 ) {
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116 attr[i++] = NSOpenGLPFAAccelerated;
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117 }
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118
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119 attr[i++] = NSOpenGLPFAScreenMask;
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120 attr[i++] = CGDisplayIDToOpenGLDisplayMask (display_id);
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121 attr[i] = 0;
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122
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123 fmt = [ [ NSOpenGLPixelFormat alloc ] initWithAttributes:attr ];
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124 if (fmt == nil) {
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125 SDL_SetError ("Failed creating OpenGL pixel format");
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126 return 0;
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127 }
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128
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129 gl_context = [ [ NSOpenGLContext alloc ] initWithFormat:fmt
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130 shareContext:nil];
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diff changeset
131
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132 [ fmt release ];
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parents: 900
diff changeset
133
761
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134 if (gl_context == nil) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
135 SDL_SetError ("Failed creating OpenGL context");
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
136 return 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
137 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
138
1736
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139 /* Synchronize QZ_GL_SwapBuffers() to vertical retrace.
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140 * (Apple's documentation is not completely clear about what this setting
3b2a92126f4d Implemented bug #2, 117:
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141 * exactly does, IMHO - for a detailed explanation see
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parents: 1403
diff changeset
142 * http://lists.apple.com/archives/mac-opengl/2006/Jan/msg00080.html )
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143 */
3b2a92126f4d Implemented bug #2, 117:
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144 if ( this->gl_config.swap_control >= 0 ) {
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parents: 1403
diff changeset
145 long value;
3b2a92126f4d Implemented bug #2, 117:
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parents: 1403
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146 value = this->gl_config.swap_control;
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147 [ gl_context setValues: &value forParameter: NSOpenGLCPSwapInterval ];
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148 }
3b2a92126f4d Implemented bug #2, 117:
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149
761
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150 /*
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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151 * Wisdom from Apple engineer in reference to UT2003's OpenGL performance:
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152 * "You are blowing a couple of the internal OpenGL function caches. This
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153 * appears to be happening in the VAO case. You can tell OpenGL to up
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154 * the cache size by issuing the following calls right after you create
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
155 * the OpenGL context. The default cache size is 16." --ryan.
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156 */
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
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157
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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158 #ifndef GLI_ARRAY_FUNC_CACHE_MAX
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diff changeset
159 #define GLI_ARRAY_FUNC_CACHE_MAX 284
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160 #endif
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diff changeset
161
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diff changeset
162 #ifndef GLI_SUBMIT_FUNC_CACHE_MAX
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163 #define GLI_SUBMIT_FUNC_CACHE_MAX 280
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164 #endif
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diff changeset
165
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parents:
diff changeset
166 {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
167 long cache_max = 64;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
168 CGLContextObj ctx = [ gl_context cglContext ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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169 CGLSetParameter (ctx, GLI_SUBMIT_FUNC_CACHE_MAX, &cache_max);
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diff changeset
170 CGLSetParameter (ctx, GLI_ARRAY_FUNC_CACHE_MAX, &cache_max);
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171 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
172
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
173 /* End Wisdom from Apple Engineer section. --ryan. */
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diff changeset
174
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diff changeset
175 return 1;
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parents:
diff changeset
176 }
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parents:
diff changeset
177
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
178 void QZ_TearDownOpenGL (_THIS) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
179
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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180 [ NSOpenGLContext clearCurrentContext ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
181 [ gl_context clearDrawable ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
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182 [ gl_context release ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
183 }
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parents:
diff changeset
184
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diff changeset
185
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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186 /* SDL OpenGL functions */
1189
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
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parents: 1181
diff changeset
187 static const char *DEFAULT_OPENGL_LIB_NAME =
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
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diff changeset
188 "/System/Library/Frameworks/OpenGL.framework/Libraries/libGL.dylib";
761
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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diff changeset
189
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diff changeset
190 int QZ_GL_LoadLibrary (_THIS, const char *location) {
1181
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diff changeset
191 if ( gl_context != NULL ) {
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diff changeset
192 SDL_SetError("OpenGL context already created");
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diff changeset
193 return -1;
49d3efec6651 Quartz driver OpenGL updates:
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parents: 1177
diff changeset
194 }
49d3efec6651 Quartz driver OpenGL updates:
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parents: 1177
diff changeset
195
1189
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
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diff changeset
196 if (opengl_library != NULL)
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
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parents: 1181
diff changeset
197 SDL_UnloadObject(opengl_library);
1181
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diff changeset
198
49d3efec6651 Quartz driver OpenGL updates:
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diff changeset
199 if (location == NULL)
1189
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
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diff changeset
200 location = DEFAULT_OPENGL_LIB_NAME;
1181
49d3efec6651 Quartz driver OpenGL updates:
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diff changeset
201
1189
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
Ryan C. Gordon <icculus@icculus.org>
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diff changeset
202 opengl_library = SDL_LoadObject(location);
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
Ryan C. Gordon <icculus@icculus.org>
parents: 1181
diff changeset
203 if (opengl_library != NULL) {
1181
49d3efec6651 Quartz driver OpenGL updates:
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diff changeset
204 this->gl_config.driver_loaded = 1;
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205 return 0;
49d3efec6651 Quartz driver OpenGL updates:
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parents: 1177
diff changeset
206 }
49d3efec6651 Quartz driver OpenGL updates:
Ryan C. Gordon <icculus@icculus.org>
parents: 1177
diff changeset
207
1189
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
Ryan C. Gordon <icculus@icculus.org>
parents: 1181
diff changeset
208 this->gl_config.driver_loaded = 0;
1181
49d3efec6651 Quartz driver OpenGL updates:
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parents: 1177
diff changeset
209 return -1;
761
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parents:
diff changeset
210 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
211
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
212 void* QZ_GL_GetProcAddress (_THIS, const char *proc) {
1189
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
Ryan C. Gordon <icculus@icculus.org>
parents: 1181
diff changeset
213 return SDL_LoadFunction(opengl_library, proc);
761
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
214 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
215
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
216 int QZ_GL_GetAttribute (_THIS, SDL_GLattr attrib, int* value) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
217
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
218 GLenum attr = 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
219
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
220 QZ_GL_MakeCurrent (this);
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
221
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
222 switch (attrib) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
223 case SDL_GL_RED_SIZE: attr = GL_RED_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
224 case SDL_GL_BLUE_SIZE: attr = GL_BLUE_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
225 case SDL_GL_GREEN_SIZE: attr = GL_GREEN_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
226 case SDL_GL_ALPHA_SIZE: attr = GL_ALPHA_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
227 case SDL_GL_DOUBLEBUFFER: attr = GL_DOUBLEBUFFER; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
228 case SDL_GL_DEPTH_SIZE: attr = GL_DEPTH_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
229 case SDL_GL_STENCIL_SIZE: attr = GL_STENCIL_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
230 case SDL_GL_ACCUM_RED_SIZE: attr = GL_ACCUM_RED_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
231 case SDL_GL_ACCUM_GREEN_SIZE: attr = GL_ACCUM_GREEN_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
232 case SDL_GL_ACCUM_BLUE_SIZE: attr = GL_ACCUM_BLUE_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
233 case SDL_GL_ACCUM_ALPHA_SIZE: attr = GL_ACCUM_ALPHA_BITS; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
234 case SDL_GL_STEREO: attr = GL_STEREO; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
235 case SDL_GL_MULTISAMPLEBUFFERS: attr = GL_SAMPLE_BUFFERS_ARB; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
236 case SDL_GL_MULTISAMPLESAMPLES: attr = GL_SAMPLES_ARB; break;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
237 case SDL_GL_BUFFER_SIZE:
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
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
239 GLint bits = 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
240 GLint component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
241
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
242 /* there doesn't seem to be a single flag in OpenGL for this! */
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
243 glGetIntegerv (GL_RED_BITS, &component); bits += component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
244 glGetIntegerv (GL_GREEN_BITS,&component); bits += component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
245 glGetIntegerv (GL_BLUE_BITS, &component); bits += component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
246 glGetIntegerv (GL_ALPHA_BITS, &component); bits += component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
247
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
248 *value = bits;
1737
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
249 return 0;
761
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
250 }
1737
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
251 case SDL_GL_ACCELERATED_VISUAL:
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
252 {
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
253 long val;
1738
acfd00fbff5c Fixed compile errors on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents: 1737
diff changeset
254 /* FIXME: How do we get this information here?
1737
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
255 [fmt getValues: &val forAttribute: NSOpenGLPFAAccelerated attr forVirtualScreen: 0];
1738
acfd00fbff5c Fixed compile errors on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents: 1737
diff changeset
256 */
acfd00fbff5c Fixed compile errors on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents: 1737
diff changeset
257 val = (this->gl_config.accelerated != 0);;
1737
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258 *value = val;
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259 return 0;
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260 }
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261 case SDL_GL_SWAP_CONTROL:
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262 {
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263 long val;
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264 [ gl_context getValues: &val forParameter: NSOpenGLCPSwapInterval ];
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265 *value = val;
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266 return 0;
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267 }
761
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268 }
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269
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270 glGetIntegerv (attr, (GLint *)value);
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271 return 0;
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272 }
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273
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274 int QZ_GL_MakeCurrent (_THIS) {
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275 [ gl_context makeCurrentContext ];
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276 return 0;
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277 }
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278
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279 void QZ_GL_SwapBuffers (_THIS) {
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280 [ gl_context flushBuffer ];
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281 }