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annotate src/video/cocoa/SDL_cocoaopengl.m @ 5056:8b7988f42fcb

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Added the ability to get the UIKit window through the SDL API. You can also do this through the native API: UIWindow *window = [[UIApplication sharedApplication] keyWindow]; Also needed to name the union for events and window info.
author Sam Lantinga <slouken@libsdl.org>
date Thu, 20 Jan 2011 16:05:59 -0800
parents 514f811a4887
children 58265e606e4e
rev   line source
1936
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2010 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 Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 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 Lesser 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 Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 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_cocoavideo.h"
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25
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26 /* NSOpenGL implementation of SDL OpenGL support */
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27
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28 #if SDL_VIDEO_OPENGL_CGL
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29 #include <OpenGL/CGLTypes.h>
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30 #include <OpenGL/OpenGL.h>
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31 #include <OpenGL/CGLRenderers.h>
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32
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33 #include "SDL_loadso.h"
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34 #include "SDL_opengl.h"
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35
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36
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37 #define DEFAULT_OPENGL "/System/Library/Frameworks/OpenGL.framework/Libraries/libGL.dylib"
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38
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39 int
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40 Cocoa_GL_LoadLibrary(_THIS, const char *path)
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41 {
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42 /* Load the OpenGL library */
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43 if (path == NULL) {
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44 path = SDL_getenv("SDL_OPENGL_LIBRARY");
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45 }
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46 if (path == NULL) {
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47 path = DEFAULT_OPENGL;
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48 }
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49 _this->gl_config.dll_handle = SDL_LoadObject(path);
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50 if (!_this->gl_config.dll_handle) {
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51 return -1;
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52 }
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53 SDL_strlcpy(_this->gl_config.driver_path, path,
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54 SDL_arraysize(_this->gl_config.driver_path));
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55 return 0;
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56 }
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57
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58 void *
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59 Cocoa_GL_GetProcAddress(_THIS, const char *proc)
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60 {
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61 return SDL_LoadFunction(_this->gl_config.dll_handle, proc);
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62 }
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63
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64 void
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65 Cocoa_GL_UnloadLibrary(_THIS)
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66 {
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67 SDL_UnloadObject(_this->gl_config.dll_handle);
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68 _this->gl_config.dll_handle = NULL;
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69 }
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70
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71 SDL_GLContext
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72 Cocoa_GL_CreateContext(_THIS, SDL_Window * window)
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73 {
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74 NSAutoreleasePool *pool;
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75 SDL_VideoDisplay *display = window->display;
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76 SDL_DisplayData *displaydata = (SDL_DisplayData *)display->driverdata;
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77 NSOpenGLPixelFormatAttribute attr[32];
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78 NSOpenGLPixelFormat *fmt;
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79 NSOpenGLContext *context;
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80 int i = 0;
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81
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82 pool = [[NSAutoreleasePool alloc] init];
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83
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84 if (window->flags & SDL_WINDOW_FULLSCREEN) {
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85 attr[i++] = NSOpenGLPFAFullScreen;
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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++] = SDL_BYTESPERPIXEL(display->current_mode.format)*8;
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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) {
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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) {
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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) {
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121 attr[i++] = NSOpenGLPFASamples;
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122 attr[i++] = _this->gl_config.multisamplesamples;
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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) {
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127 if (_this->gl_config.accelerated) {
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128 attr[i++] = NSOpenGLPFAAccelerated;
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129 } else {
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130 attr[i++] = NSOpenGLPFARendererID;
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131 attr[i++] = kCGLRendererGenericFloatID;
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132 }
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133 }
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134
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135 attr[i++] = NSOpenGLPFAScreenMask;
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136 attr[i++] = CGDisplayIDToOpenGLDisplayMask(displaydata->display);
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137 attr[i] = 0;
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138
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139 fmt = [[NSOpenGLPixelFormat alloc] initWithAttributes:attr];
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140 if (fmt == nil) {
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141 SDL_SetError ("Failed creating OpenGL pixel format");
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142 [pool release];
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143 return NULL;
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
144 }
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
145
2178
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parents: 1973
diff changeset
146 context = [[NSOpenGLContext alloc] initWithFormat:fmt shareContext:nil];
1936
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
147
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parents:
diff changeset
148 [fmt release];
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parents:
diff changeset
149
2178
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parents: 1973
diff changeset
150 if (context == nil) {
1936
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
151 SDL_SetError ("Failed creating OpenGL context");
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parents:
diff changeset
152 [pool release];
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parents:
diff changeset
153 return NULL;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
154 }
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
155
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parents:
diff changeset
156 /*
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
157 * Wisdom from Apple engineer in reference to UT2003's OpenGL performance:
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
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158 * "You are blowing a couple of the internal OpenGL function caches. This
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
159 * appears to be happening in the VAO case. You can tell OpenGL to up
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
160 * the cache size by issuing the following calls right after you create
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
161 * the OpenGL context. The default cache size is 16." --ryan.
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parents:
diff changeset
162 */
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parents:
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163
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parents:
diff changeset
164 #ifndef GLI_ARRAY_FUNC_CACHE_MAX
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parents:
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165 #define GLI_ARRAY_FUNC_CACHE_MAX 284
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166 #endif
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167
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parents:
diff changeset
168 #ifndef GLI_SUBMIT_FUNC_CACHE_MAX
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parents:
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169 #define GLI_SUBMIT_FUNC_CACHE_MAX 280
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170 #endif
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171
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parents:
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172 {
4925
514f811a4887 Removed support for 10.3.9
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parents: 4498
diff changeset
173 GLint cache_max = 64;
2178
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parents: 1973
diff changeset
174 CGLContextObj ctx = [context CGLContextObj];
1936
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diff changeset
175 CGLSetParameter (ctx, GLI_SUBMIT_FUNC_CACHE_MAX, &cache_max);
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parents:
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176 CGLSetParameter (ctx, GLI_ARRAY_FUNC_CACHE_MAX, &cache_max);
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177 }
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178
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179 /* End Wisdom from Apple Engineer section. --ryan. */
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180
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181 [pool release];
2178
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parents: 1973
diff changeset
182
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 1973
diff changeset
183 if ( Cocoa_GL_MakeCurrent(_this, window, context) < 0 ) {
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parents: 1973
diff changeset
184 Cocoa_GL_DeleteContext(_this, context);
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parents: 1973
diff changeset
185 return NULL;
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 1973
diff changeset
186 }
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parents: 1973
diff changeset
187
114a541cfae2 Creating a context makes it current, per the documentation.
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parents: 1973
diff changeset
188 return context;
1936
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
189 }
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
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190
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parents:
diff changeset
191 int
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
192 Cocoa_GL_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context)
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
193 {
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
194 NSAutoreleasePool *pool;
83946ee0ff1f Implemented OpenGL support on Mac OS X
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diff changeset
195
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196 pool = [[NSAutoreleasePool alloc] init];
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diff changeset
197
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parents:
diff changeset
198 if (context) {
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diff changeset
199 SDL_WindowData *windowdata = (SDL_WindowData *)window->driverdata;
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parents:
diff changeset
200 NSOpenGLContext *nscontext = (NSOpenGLContext *)context;
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parents:
diff changeset
201
1973
81255f93dfcd Fixed fullscreen modes with Cocoa video driver.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
202 if (window->flags & SDL_WINDOW_FULLSCREEN) {
81255f93dfcd Fixed fullscreen modes with Cocoa video driver.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
203 [nscontext setFullScreen];
81255f93dfcd Fixed fullscreen modes with Cocoa video driver.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
204 } else {
3688
6512cba48440 Fixed Cocoa and OpenGL builds
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parents: 3685
diff changeset
205 [nscontext setView:[windowdata->nswindow contentView]];
1973
81255f93dfcd Fixed fullscreen modes with Cocoa video driver.
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parents: 1970
diff changeset
206 [nscontext update];
81255f93dfcd Fixed fullscreen modes with Cocoa video driver.
Sam Lantinga <slouken@libsdl.org>
parents: 1970
diff changeset
207 }
1936
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diff changeset
208 [nscontext makeCurrentContext];
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parents:
diff changeset
209 } else {
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parents:
diff changeset
210 [NSOpenGLContext clearCurrentContext];
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parents:
diff changeset
211 }
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parents:
diff changeset
212
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diff changeset
213 [pool release];
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parents:
diff changeset
214 return 0;
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
215 }
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parents:
diff changeset
216
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parents:
diff changeset
217 int
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diff changeset
218 Cocoa_GL_SetSwapInterval(_THIS, int interval)
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
219 {
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
220 NSAutoreleasePool *pool;
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parents:
diff changeset
221 NSOpenGLContext *nscontext;
2703
18a472b6d745 Fixed compiler warning
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parents: 2178
diff changeset
222 GLint value;
1936
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parents:
diff changeset
223 int status;
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parents:
diff changeset
224
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225 pool = [[NSAutoreleasePool alloc] init];
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parents:
diff changeset
226
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diff changeset
227 nscontext = [NSOpenGLContext currentContext];
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parents:
diff changeset
228 if (nscontext != nil) {
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parents:
diff changeset
229 value = interval;
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parents:
diff changeset
230 [nscontext setValues:&value forParameter:NSOpenGLCPSwapInterval];
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
231 status = 0;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
232 } else {
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
233 SDL_SetError("No current OpenGL context");
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
234 status = -1;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
235 }
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
236
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parents:
diff changeset
237 [pool release];
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
238 return status;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
239 }
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
240
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
241 int
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
242 Cocoa_GL_GetSwapInterval(_THIS)
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
243 {
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
244 NSAutoreleasePool *pool;
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
245 NSOpenGLContext *nscontext;
2703
18a472b6d745 Fixed compiler warning
Sam Lantinga <slouken@libsdl.org>
parents: 2178
diff changeset
246 GLint value;
1936
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
247 int status;
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
248
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
249 pool = [[NSAutoreleasePool alloc] init];
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
250
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
251 nscontext = [NSOpenGLContext currentContext];
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
252 if (nscontext != nil) {
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
253 [nscontext getValues:&value forParameter:NSOpenGLCPSwapInterval];
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
254 status = (int)value;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
255 } else {
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
256 SDL_SetError("No current OpenGL context");
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
257 status = -1;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
258 }
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
259
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
260 [pool release];
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
261 return status;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
262 }
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
263
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
264 void
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
265 Cocoa_GL_SwapWindow(_THIS, SDL_Window * window)
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
266 {
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
267 NSAutoreleasePool *pool;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
268 NSOpenGLContext *nscontext;
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
269
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
270 pool = [[NSAutoreleasePool alloc] init];
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
271
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
272 /* FIXME: Do we need to get the context for the window? */
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
273 nscontext = [NSOpenGLContext currentContext];
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
274 if (nscontext != nil) {
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
275 [nscontext flushBuffer];
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
276 }
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
277
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
278 [pool release];
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
279 }
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
280
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
281 void
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
282 Cocoa_GL_DeleteContext(_THIS, SDL_GLContext context)
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
283 {
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
284 NSAutoreleasePool *pool;
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
285 NSOpenGLContext *nscontext = (NSOpenGLContext *)context;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
286
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
287 pool = [[NSAutoreleasePool alloc] init];
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
288
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
289 [nscontext clearDrawable];
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
290 [nscontext release];
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
291
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
292 [pool release];
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
293 }
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
294
1952
420716272158 Implemented X11 OpenGL support.
Sam Lantinga <slouken@libsdl.org>
parents: 1936
diff changeset
295 #endif /* SDL_VIDEO_OPENGL_CGL */
1936
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
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296
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
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