Mercurial > sdl-ios-xcode

annotate src/video/quartz/SDL_QuartzGL.m @ 4249:429c8dd3175d SDL-1.2

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Fixed bug #713 Don't clamp the mouse coordinates to the video surface size, instead clamp them to the last known window size. This allows users to get the correct mouse coordinates even if they don't call SDL_SetVideoMode() in response to an SDL_VIDEORESIZE event (used as a hack to retain the OpenGL context on Windows and Linux after a window resize)
author Sam Lantinga <slouken@libsdl.org>
date Sun, 27 Sep 2009 05:18:43 +0000
parents 976bc19f8f6b
children 8d67936e32ec
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2009 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 #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/graphicsimaging/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://lists.libsdl.org/pipermail/sdl-libsdl.org/2003-December/039794.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 #ifdef __powerpc__ /* we lost this in 10.6, which has no PPC support. */
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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 CGLContextObj QZ_GetCGLContextObj(NSOpenGLContext *nsctx)
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52 {
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53 return [nsctx cglContext];
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54 }
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55 #else
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56 CGLContextObj QZ_GetCGLContextObj(NSOpenGLContext *nsctx)
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57 {
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58 return (CGLContextObj) [nsctx CGLContextObj];
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59 }
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60 #endif
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61
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62
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63 /* OpenGL helper functions (used internally) */
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64
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65 int QZ_SetupOpenGL (_THIS, int bpp, Uint32 flags) {
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66
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67 NSOpenGLPixelFormatAttribute attr[32];
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68 NSOpenGLPixelFormat *fmt;
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69 int i = 0;
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70 int colorBits = bpp;
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71
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72 /* if a GL library hasn't been loaded at this point, load the default. */
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73 if (!this->gl_config.driver_loaded) {
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74 if (QZ_GL_LoadLibrary(this, NULL) == -1)
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75 return 0;
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76 }
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77
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78 if ( flags & SDL_FULLSCREEN ) {
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79
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80 attr[i++] = NSOpenGLPFAFullScreen;
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81 }
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82 /* In windowed mode, the OpenGL pixel depth must match device pixel depth */
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83 else if ( colorBits != device_bpp ) {
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84
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85 colorBits = device_bpp;
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86 }
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87
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88 attr[i++] = NSOpenGLPFAColorSize;
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89 attr[i++] = colorBits;
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90
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91 attr[i++] = NSOpenGLPFADepthSize;
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92 attr[i++] = this->gl_config.depth_size;
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93
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94 if ( this->gl_config.double_buffer ) {
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95 attr[i++] = NSOpenGLPFADoubleBuffer;
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96 }
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97
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98 if ( this->gl_config.stereo ) {
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99 attr[i++] = NSOpenGLPFAStereo;
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100 }
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101
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102 if ( this->gl_config.stencil_size != 0 ) {
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103 attr[i++] = NSOpenGLPFAStencilSize;
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104 attr[i++] = this->gl_config.stencil_size;
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105 }
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106
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107 if ( (this->gl_config.accum_red_size +
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108 this->gl_config.accum_green_size +
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109 this->gl_config.accum_blue_size +
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110 this->gl_config.accum_alpha_size) > 0 ) {
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111 attr[i++] = NSOpenGLPFAAccumSize;
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112 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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113 }
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114
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115 if ( this->gl_config.multisamplebuffers != 0 ) {
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116 attr[i++] = NSOpenGLPFASampleBuffers;
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117 attr[i++] = this->gl_config.multisamplebuffers;
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118 }
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119
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120 if ( this->gl_config.multisamplesamples != 0 ) {
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121 attr[i++] = NSOpenGLPFASamples;
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122 attr[i++] = this->gl_config.multisamplesamples;
900
c3c8739f7844 *** empty log message ***
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123 attr[i++] = NSOpenGLPFANoRecovery;
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124 }
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125
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126 if ( this->gl_config.accelerated > 0 ) {
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
127 attr[i++] = NSOpenGLPFAAccelerated;
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
128 }
eacc5bc01d1c Implemented bug #5
Sam Lantinga <slouken@libsdl.org>
parents: 1736
diff changeset
129
761
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diff changeset
130 attr[i++] = NSOpenGLPFAScreenMask;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
131 attr[i++] = CGDisplayIDToOpenGLDisplayMask (display_id);
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
132 attr[i] = 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
133
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
134 fmt = [ [ NSOpenGLPixelFormat alloc ] initWithAttributes:attr ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
135 if (fmt == nil) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
136 SDL_SetError ("Failed creating OpenGL pixel format");
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
137 return 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
138 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
139
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
140 gl_context = [ [ NSOpenGLContext alloc ] initWithFormat:fmt
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
141 shareContext:nil];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
142
1160
72c6c3e5bb85 Closed a memory leak caused when quitting video subsystem on Quartz target.
Ryan C. Gordon <icculus@icculus.org>
parents: 900
diff changeset
143 [ fmt release ];
72c6c3e5bb85 Closed a memory leak caused when quitting video subsystem on Quartz target.
Ryan C. Gordon <icculus@icculus.org>
parents: 900
diff changeset
144
761
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parents:
diff changeset
145 if (gl_context == nil) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
146 SDL_SetError ("Failed creating OpenGL context");
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
147 return 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
148 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
149
1736
3b2a92126f4d Implemented bug #2, 117:
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parents: 1403
diff changeset
150 /* Synchronize QZ_GL_SwapBuffers() to vertical retrace.
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1403
diff changeset
151 * (Apple's documentation is not completely clear about what this setting
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1403
diff changeset
152 * exactly does, IMHO - for a detailed explanation see
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1403
diff changeset
153 * http://lists.apple.com/archives/mac-opengl/2006/Jan/msg00080.html )
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1403
diff changeset
154 */
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1403
diff changeset
155 if ( this->gl_config.swap_control >= 0 ) {
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1403
diff changeset
156 long value;
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1403
diff changeset
157 value = this->gl_config.swap_control;
3b2a92126f4d Implemented bug #2, 117:
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parents: 1403
diff changeset
158 [ gl_context setValues: &value forParameter: NSOpenGLCPSwapInterval ];
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1403
diff changeset
159 }
3b2a92126f4d Implemented bug #2, 117:
Sam Lantinga <slouken@libsdl.org>
parents: 1403
diff changeset
160
761
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
161 /*
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
162 * Wisdom from Apple engineer in reference to UT2003's OpenGL performance:
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
163 * "You are blowing a couple of the internal OpenGL function caches. This
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
164 * appears to be happening in the VAO case. You can tell OpenGL to up
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
165 * 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
166 * the OpenGL context. The default cache size is 16." --ryan.
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
167 */
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
168
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
169 #ifndef GLI_ARRAY_FUNC_CACHE_MAX
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
170 #define GLI_ARRAY_FUNC_CACHE_MAX 284
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
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parents:
diff changeset
171 #endif
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
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
173 #ifndef GLI_SUBMIT_FUNC_CACHE_MAX
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
174 #define GLI_SUBMIT_FUNC_CACHE_MAX 280
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
175 #endif
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
176
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
177 {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
178 long cache_max = 64;
4204
976bc19f8f6b 1.2 Quartz video: Ripped out QuickDraw and QuickTime.
Ryan C. Gordon <icculus@icculus.org>
parents: 4188
diff changeset
179 CGLContextObj ctx = QZ_GetCGLContextObj(gl_context);
761
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
180 CGLSetParameter (ctx, GLI_SUBMIT_FUNC_CACHE_MAX, &cache_max);
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
181 CGLSetParameter (ctx, GLI_ARRAY_FUNC_CACHE_MAX, &cache_max);
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
182 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
183
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
184 /* End Wisdom from Apple Engineer section. --ryan. */
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
185
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
186 return 1;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
187 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
188
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
189 void QZ_TearDownOpenGL (_THIS) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
190
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
191 [ NSOpenGLContext clearCurrentContext ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
192 [ gl_context clearDrawable ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
193 [ gl_context release ];
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
194 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
195
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
196
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
197 /* SDL OpenGL functions */
1189
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
Ryan C. Gordon <icculus@icculus.org>
parents: 1181
diff changeset
198 static const char *DEFAULT_OPENGL_LIB_NAME =
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
Ryan C. Gordon <icculus@icculus.org>
parents: 1181
diff changeset
199 "/System/Library/Frameworks/OpenGL.framework/Libraries/libGL.dylib";
761
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
200
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
201 int QZ_GL_LoadLibrary (_THIS, const char *location) {
1181
49d3efec6651 Quartz driver OpenGL updates:
Ryan C. Gordon <icculus@icculus.org>
parents: 1177
diff changeset
202 if ( gl_context != NULL ) {
49d3efec6651 Quartz driver OpenGL updates:
Ryan C. Gordon <icculus@icculus.org>
parents: 1177
diff changeset
203 SDL_SetError("OpenGL context already created");
49d3efec6651 Quartz driver OpenGL updates:
Ryan C. Gordon <icculus@icculus.org>
parents: 1177
diff changeset
204 return -1;
49d3efec6651 Quartz driver OpenGL updates:
Ryan C. Gordon <icculus@icculus.org>
parents: 1177
diff changeset
205 }
49d3efec6651 Quartz driver OpenGL updates:
Ryan C. Gordon <icculus@icculus.org>
parents: 1177
diff changeset
206
1189
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
Ryan C. Gordon <icculus@icculus.org>
parents: 1181
diff changeset
207 if (opengl_library != NULL)
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
Ryan C. Gordon <icculus@icculus.org>
parents: 1181
diff changeset
208 SDL_UnloadObject(opengl_library);
1181
49d3efec6651 Quartz driver OpenGL updates:
Ryan C. Gordon <icculus@icculus.org>
parents: 1177
diff changeset
209
49d3efec6651 Quartz driver OpenGL updates:
Ryan C. Gordon <icculus@icculus.org>
parents: 1177
diff changeset
210 if (location == NULL)
1189
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
Ryan C. Gordon <icculus@icculus.org>
parents: 1181
diff changeset
211 location = DEFAULT_OPENGL_LIB_NAME;
1181
49d3efec6651 Quartz driver OpenGL updates:
Ryan C. Gordon <icculus@icculus.org>
parents: 1177
diff changeset
212
1189
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
Ryan C. Gordon <icculus@icculus.org>
parents: 1181
diff changeset
213 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
214 if (opengl_library != NULL) {
1181
49d3efec6651 Quartz driver OpenGL updates:
Ryan C. Gordon <icculus@icculus.org>
parents: 1177
diff changeset
215 this->gl_config.driver_loaded = 1;
49d3efec6651 Quartz driver OpenGL updates:
Ryan C. Gordon <icculus@icculus.org>
parents: 1177
diff changeset
216 return 0;
49d3efec6651 Quartz driver OpenGL updates:
Ryan C. Gordon <icculus@icculus.org>
parents: 1177
diff changeset
217 }
49d3efec6651 Quartz driver OpenGL updates:
Ryan C. Gordon <icculus@icculus.org>
parents: 1177
diff changeset
218
1189
c96b326b90ba Moved Quartz SDL_GL_LoadLibrary() to SDL_loadso interface.
Ryan C. Gordon <icculus@icculus.org>
parents: 1181
diff changeset
219 this->gl_config.driver_loaded = 0;
1181
49d3efec6651 Quartz driver OpenGL updates:
Ryan C. Gordon <icculus@icculus.org>
parents: 1177
diff changeset
220 return -1;
761
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
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
223 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
224 return SDL_LoadFunction(opengl_library, proc);
761
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
225 }
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
226
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
227 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
228
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
229 GLenum attr = 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
230
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
231 QZ_GL_MakeCurrent (this);
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
232
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
233 switch (attrib) {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
234 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
235 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
236 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
237 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
238 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
239 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
240 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
241 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
242 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
243 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
244 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
245 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
246 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
247 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
248 case SDL_GL_BUFFER_SIZE:
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
249 {
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
250 GLint bits = 0;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
251 GLint component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
252
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
253 /* 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
254 glGetIntegerv (GL_RED_BITS, &component); bits += component;
c5b2b6d2d1fe Date: Wed, 31 Dec 2003 21:55:30 +0100
Sam Lantinga <slouken@libsdl.org>
parents:
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255 glGetIntegerv (GL_GREEN_BITS,&component); bits += component;
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256 glGetIntegerv (GL_BLUE_BITS, &component); bits += component;
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257 glGetIntegerv (GL_ALPHA_BITS, &component); bits += component;
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258
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259 *value = bits;
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260 return 0;
761
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261 }
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262 case SDL_GL_ACCELERATED_VISUAL:
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263 {
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264 long val;
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265 /* FIXME: How do we get this information here?
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266 [fmt getValues: &val forAttribute: NSOpenGLPFAAccelerated attr forVirtualScreen: 0];
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267 */
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268 val = (this->gl_config.accelerated != 0);;
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269 *value = val;
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270 return 0;
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271 }
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272 case SDL_GL_SWAP_CONTROL:
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273 {
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274 long val;
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275 [ gl_context getValues: &val forParameter: NSOpenGLCPSwapInterval ];
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276 *value = val;
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277 return 0;
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278 }
761
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279 }
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280
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281 glGetIntegerv (attr, (GLint *)value);
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282 return 0;
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283 }
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284
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285 int QZ_GL_MakeCurrent (_THIS) {
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286 [ gl_context makeCurrentContext ];
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287 return 0;
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288 }
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289
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290 void QZ_GL_SwapBuffers (_THIS) {
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291 [ gl_context flushBuffer ];
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292 }