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annotate src/video/cocoa/SDL_cocoaopengl.m @ 1970:db3ba6c0d0df

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Allow the render context to do necessary work when the video mode changes.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 06 Aug 2006 04:39:13 +0000
parents 420716272158
children 81255f93dfcd
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) 1997-2006 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
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31 #include "SDL_loadso.h"
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32 #include "SDL_opengl.h"
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33
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34
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35 #define DEFAULT_OPENGL "/System/Library/Frameworks/OpenGL.framework/Libraries/libGL.dylib"
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36
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37 /* This is implemented in Mac OS X 10.3 and above */
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38 #if MAC_OS_X_VERSION_MAX_ALLOWED < MAC_OS_X_VERSION_10_3
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39 @implementation NSOpenGLContext(CGLContextAccess)
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40 - (CGLContextObj)CGLContextObj;
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41 {
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42 return _contextAuxiliary;
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43 }
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44 @end
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45 #endif /* < 10.3 */
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46
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47 int
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48 Cocoa_GL_LoadLibrary(_THIS, const char *path)
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49 {
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50 if (_this->gl_config.driver_loaded) {
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51 if (path) {
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52 SDL_SetError("OpenGL library already loaded");
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53 return -1;
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54 } else {
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55 ++_this->gl_config.driver_loaded;
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56 return 0;
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57 }
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58 }
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59 if (path == NULL) {
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60 path = SDL_getenv("SDL_OPENGL_LIBRARY");
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61 }
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62 if (path == NULL) {
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63 path = DEFAULT_OPENGL;
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64 }
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65 _this->gl_config.dll_handle = SDL_LoadObject(path);
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66 if (!_this->gl_config.dll_handle) {
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67 return -1;
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68 }
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69 SDL_strlcpy(_this->gl_config.driver_path, path,
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70 SDL_arraysize(_this->gl_config.driver_path));
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71 _this->gl_config.driver_loaded = 1;
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72 return 0;
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73 }
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74
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75 void *
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76 Cocoa_GL_GetProcAddress(_THIS, const char *proc)
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77 {
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78 return SDL_LoadFunction(_this->gl_config.dll_handle, proc);
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79 }
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80
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81 static void
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82 Cocoa_GL_UnloadLibrary(_THIS)
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83 {
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84 if (_this->gl_config.driver_loaded > 0) {
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85 if (--_this->gl_config.driver_loaded > 0) {
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86 return;
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87 }
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88 SDL_UnloadObject(_this->gl_config.dll_handle);
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89 _this->gl_config.dll_handle = NULL;
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90 }
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91 }
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92
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93 static int
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94 Cocoa_GL_Initialize(_THIS)
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95 {
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96 if (_this->gl_data) {
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97 ++_this->gl_data->initialized;
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98 return 0;
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99 }
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100
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101 _this->gl_data =
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102 (struct SDL_GLDriverData *) SDL_calloc(1,
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103 sizeof(struct
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104 SDL_GLDriverData));
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105 if (!_this->gl_data) {
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106 SDL_OutOfMemory();
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107 return -1;
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108 }
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109 _this->gl_data->initialized = 1;
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110
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111 if (Cocoa_GL_LoadLibrary(_this, NULL) < 0) {
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112 return -1;
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113 }
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114 return 0;
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115 }
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116
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117 static void
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118 Cocoa_GL_Shutdown(_THIS)
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119 {
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120 if (!_this->gl_data || (--_this->gl_data->initialized > 0)) {
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121 return;
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122 }
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123
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124 Cocoa_GL_UnloadLibrary(_this);
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125
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126 SDL_free(_this->gl_data);
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127 _this->gl_data = NULL;
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128 }
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129
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130 int
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131 Cocoa_GL_SetupWindow(_THIS, SDL_Window * window)
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132 {
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133 if (Cocoa_GL_Initialize(_this) < 0) {
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134 return -1;
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135 }
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136 return 0;
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137 }
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138
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139 void
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140 Cocoa_GL_CleanupWindow(_THIS, SDL_Window * window)
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141 {
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142 Cocoa_GL_Shutdown(_this);
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143 }
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144
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145 SDL_GLContext
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146 Cocoa_GL_CreateContext(_THIS, SDL_Window * window)
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147 {
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148 NSAutoreleasePool *pool;
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149 SDL_VideoDisplay *display = SDL_GetDisplayFromWindow(window);
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150 SDL_DisplayData *displaydata = (SDL_DisplayData *)display->driverdata;
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
151 NSOpenGLPixelFormatAttribute attr[32];
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
152 NSOpenGLPixelFormat *fmt;
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
153 NSOpenGLContext *nscontext;
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
154 int i = 0;
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
155
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
156 pool = [[NSAutoreleasePool alloc] init];
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
157
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
158 if (window->flags & SDL_WINDOW_FULLSCREEN) {
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
159 attr[i++] = NSOpenGLPFAFullScreen;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
160 }
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
161
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
162 attr[i++] = NSOpenGLPFAColorSize;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
163 attr[i++] = SDL_BYTESPERPIXEL(display->current_mode.format)*8;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
164
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
165 attr[i++] = NSOpenGLPFADepthSize;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
166 attr[i++] = _this->gl_config.depth_size;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
167
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
168 if (_this->gl_config.double_buffer) {
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
169 attr[i++] = NSOpenGLPFADoubleBuffer;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
170 }
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
171
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
172 if (_this->gl_config.stereo) {
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
173 attr[i++] = NSOpenGLPFAStereo;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
174 }
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
175
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
176 if (_this->gl_config.stencil_size) {
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
177 attr[i++] = NSOpenGLPFAStencilSize;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
178 attr[i++] = _this->gl_config.stencil_size;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
179 }
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
180
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
181 if ((_this->gl_config.accum_red_size +
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
182 _this->gl_config.accum_green_size +
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
183 _this->gl_config.accum_blue_size +
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
184 _this->gl_config.accum_alpha_size) > 0) {
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
185 attr[i++] = NSOpenGLPFAAccumSize;
83946ee0ff1f Implemented OpenGL support on Mac OS X
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diff changeset
186 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;
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
187 }
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
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188
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
189 if (_this->gl_config.multisamplebuffers) {
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
190 attr[i++] = NSOpenGLPFASampleBuffers;
83946ee0ff1f Implemented OpenGL support on Mac OS X
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diff changeset
191 attr[i++] = _this->gl_config.multisamplebuffers;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
192 }
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 if (_this->gl_config.multisamplesamples) {
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
195 attr[i++] = NSOpenGLPFASamples;
83946ee0ff1f Implemented OpenGL support on Mac OS X
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diff changeset
196 attr[i++] = _this->gl_config.multisamplesamples;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
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197 attr[i++] = NSOpenGLPFANoRecovery;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
198 }
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
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199
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
200 if (_this->gl_config.accelerated > 0) {
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
201 attr[i++] = NSOpenGLPFAAccelerated;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
202 }
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
203
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
204 attr[i++] = NSOpenGLPFAScreenMask;
83946ee0ff1f Implemented OpenGL support on Mac OS X
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diff changeset
205 attr[i++] = CGDisplayIDToOpenGLDisplayMask(displaydata->display);
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
206 attr[i] = 0;
83946ee0ff1f Implemented OpenGL support on Mac OS X
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diff changeset
207
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parents:
diff changeset
208 fmt = [[NSOpenGLPixelFormat alloc] initWithAttributes:attr];
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parents:
diff changeset
209 if (fmt == nil) {
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parents:
diff changeset
210 SDL_SetError ("Failed creating OpenGL pixel format");
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211 [pool release];
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diff changeset
212 return NULL;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
213 }
83946ee0ff1f Implemented OpenGL support on Mac OS X
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diff changeset
214
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diff changeset
215 nscontext = [[NSOpenGLContext alloc] initWithFormat:fmt shareContext:nil];
83946ee0ff1f Implemented OpenGL support on Mac OS X
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216
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diff changeset
217 [fmt release];
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diff changeset
218
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diff changeset
219 if (nscontext == nil) {
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diff changeset
220 SDL_SetError ("Failed creating OpenGL context");
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diff changeset
221 [pool release];
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diff changeset
222 return NULL;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
223 }
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
224
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
225 /*
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
226 * Wisdom from Apple engineer in reference to UT2003's OpenGL performance:
83946ee0ff1f Implemented OpenGL support on Mac OS X
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227 * "You are blowing a couple of the internal OpenGL function caches. This
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
228 * 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
229 * the cache size by issuing the following calls right after you create
83946ee0ff1f Implemented OpenGL support on Mac OS X
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230 * the OpenGL context. The default cache size is 16." --ryan.
83946ee0ff1f Implemented OpenGL support on Mac OS X
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diff changeset
231 */
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
232
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parents:
diff changeset
233 #ifndef GLI_ARRAY_FUNC_CACHE_MAX
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
234 #define GLI_ARRAY_FUNC_CACHE_MAX 284
83946ee0ff1f Implemented OpenGL support on Mac OS X
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diff changeset
235 #endif
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
236
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
237 #ifndef GLI_SUBMIT_FUNC_CACHE_MAX
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
238 #define GLI_SUBMIT_FUNC_CACHE_MAX 280
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
239 #endif
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 {
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
242 long cache_max = 64;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
243 CGLContextObj ctx = [nscontext CGLContextObj];
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
244 CGLSetParameter (ctx, GLI_SUBMIT_FUNC_CACHE_MAX, &cache_max);
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
245 CGLSetParameter (ctx, GLI_ARRAY_FUNC_CACHE_MAX, &cache_max);
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
246 }
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
247
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
248 /* End Wisdom from Apple Engineer section. --ryan. */
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
249
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
250 /* FIXME: should this go somewhere else? */
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
251 if (window->flags & SDL_WINDOW_FULLSCREEN) {
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
252 [nscontext setFullScreen];
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
253 }
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
254
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
255 [pool release];
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
256 return nscontext;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
257 }
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 int
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
260 Cocoa_GL_MakeCurrent(_THIS, SDL_Window * window, SDL_GLContext context)
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
261 {
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
262 NSAutoreleasePool *pool;
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
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parents:
diff changeset
264 pool = [[NSAutoreleasePool alloc] init];
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
265
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
266 if (context) {
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
267 SDL_WindowData *windowdata = (SDL_WindowData *)window->driverdata;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
268 NSOpenGLContext *nscontext = (NSOpenGLContext *)context;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
269
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
270 [nscontext setView:[windowdata->window contentView]];
1970
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1952
diff changeset
271 [nscontext update];
1936
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
272 [nscontext makeCurrentContext];
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
273 } else {
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
274 [NSOpenGLContext clearCurrentContext];
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
275 }
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
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parents:
diff changeset
277 [pool release];
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
278 return 0;
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 int
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
282 Cocoa_GL_SetSwapInterval(_THIS, int interval)
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
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
285 NSOpenGLContext *nscontext;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
286 long value;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
287 int status;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
288
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
289 pool = [[NSAutoreleasePool alloc] init];
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
290
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
291 nscontext = [NSOpenGLContext currentContext];
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
292 if (nscontext != nil) {
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
293 value = interval;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
294 [nscontext setValues:&value forParameter:NSOpenGLCPSwapInterval];
83946ee0ff1f Implemented OpenGL support on Mac OS X
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parents:
diff changeset
295 status = 0;
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
296 } else {
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
297 SDL_SetError("No current OpenGL context");
83946ee0ff1f Implemented OpenGL support on Mac OS X
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
298 status = -1;
83946ee0ff1f Implemented OpenGL support on Mac OS X
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299 }
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300
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301 [pool release];
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302 return status;
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303 }
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304
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305 int
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306 Cocoa_GL_GetSwapInterval(_THIS)
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307 {
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308 NSAutoreleasePool *pool;
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309 NSOpenGLContext *nscontext;
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310 long value;
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311 int status;
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312
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313 pool = [[NSAutoreleasePool alloc] init];
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314
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315 nscontext = [NSOpenGLContext currentContext];
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316 if (nscontext != nil) {
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317 [nscontext getValues:&value forParameter:NSOpenGLCPSwapInterval];
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318 status = (int)value;
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319 } else {
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320 SDL_SetError("No current OpenGL context");
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321 status = -1;
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322 }
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323
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324 [pool release];
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325 return status;
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326 }
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327
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328 void
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329 Cocoa_GL_SwapWindow(_THIS, SDL_Window * window)
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330 {
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331 NSAutoreleasePool *pool;
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332 NSOpenGLContext *nscontext;
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333
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334 pool = [[NSAutoreleasePool alloc] init];
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335
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336 /* FIXME: Do we need to get the context for the window? */
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337 nscontext = [NSOpenGLContext currentContext];
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338 if (nscontext != nil) {
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339 [nscontext flushBuffer];
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340 }
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341
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342 [pool release];
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343 }
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344
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345 void
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346 Cocoa_GL_DeleteContext(_THIS, SDL_GLContext context)
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347 {
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348 NSAutoreleasePool *pool;
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349 NSOpenGLContext *nscontext = (NSOpenGLContext *)context;
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350
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351 pool = [[NSAutoreleasePool alloc] init];
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352
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353 [nscontext clearDrawable];
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354 [nscontext release];
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355
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356 [pool release];
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357 }
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358
1952
420716272158 Implemented X11 OpenGL support.
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359 #endif /* SDL_VIDEO_OPENGL_CGL */
1936
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360
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361 /* vi: set ts=4 sw=4 expandtab: */