Mercurial > sdl-ios-xcode
annotate src/video/maccommon/SDL_macgl.c @ 1721:1cc762cafff8 SDL-1.3
Fixed indenting in MSVC inline assembly
author | Sam Lantinga <slouken@libsdl.org> |
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date | Fri, 30 Jun 2006 05:50:35 +0000 |
parents | 4da1ee79c9af |
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rev | line source |
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0 | 1 /* |
2 SDL - Simple DirectMedia Layer | |
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3 Copyright (C) 1997-2006 Sam Lantinga |
0 | 4 |
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 |
0 | 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. |
0 | 9 |
10 This library is distributed in the hope that it will be useful, | |
11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
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13 Lesser General Public License for more details. |
0 | 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 |
0 | 18 |
19 Sam Lantinga | |
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20 slouken@libsdl.org |
0 | 21 */ |
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22 #include "SDL_config.h" |
0 | 23 |
24 /* AGL implementation of SDL OpenGL support */ | |
25 | |
26 #include "SDL_lowvideo.h" | |
27 #include "SDL_macgl_c.h" | |
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28 #include "SDL_loadso.h" |
0 | 29 |
30 | |
31 /* krat: adding OpenGL support */ | |
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32 int |
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33 Mac_GL_Init(_THIS) |
0 | 34 { |
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35 #if SDL_VIDEO_OPENGL |
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36 AGLPixelFormat format; |
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37 int i = 0; |
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38 GLint attributes[26]; /* 26 is max possible in this setup */ |
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39 GLboolean noerr; |
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40 |
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41 /* load the gl driver from a default path */ |
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42 if (!this->gl_config.driver_loaded) { |
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43 /* no driver has been loaded, use default (ourselves) */ |
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44 if (Mac_GL_LoadLibrary(this, NULL) < 0) { |
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45 return (-1); |
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46 } |
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47 } |
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48 |
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49 attributes[i++] = AGL_RGBA; |
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50 if (this->gl_config.red_size != 0 && |
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51 this->gl_config.blue_size != 0 && this->gl_config.green_size != 0) { |
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52 attributes[i++] = AGL_RED_SIZE; |
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53 attributes[i++] = this->gl_config.red_size; |
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54 attributes[i++] = AGL_GREEN_SIZE; |
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55 attributes[i++] = this->gl_config.green_size; |
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56 attributes[i++] = AGL_BLUE_SIZE; |
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57 attributes[i++] = this->gl_config.blue_size; |
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58 attributes[i++] = AGL_ALPHA_SIZE; |
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59 attributes[i++] = this->gl_config.alpha_size; |
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60 } |
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61 if (this->gl_config.double_buffer) { |
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62 attributes[i++] = AGL_DOUBLEBUFFER; |
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63 } |
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64 if (this->gl_config.depth_size != 0) { |
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65 attributes[i++] = AGL_DEPTH_SIZE; |
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66 attributes[i++] = this->gl_config.depth_size; |
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67 } |
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68 if (this->gl_config.stencil_size != 0) { |
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69 attributes[i++] = AGL_STENCIL_SIZE; |
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70 attributes[i++] = this->gl_config.stencil_size; |
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71 } |
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72 if (this->gl_config.accum_red_size != 0 && |
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73 this->gl_config.accum_blue_size != 0 && |
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74 this->gl_config.accum_green_size != 0) { |
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75 |
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76 attributes[i++] = AGL_ACCUM_RED_SIZE; |
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77 attributes[i++] = this->gl_config.accum_red_size; |
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78 attributes[i++] = AGL_ACCUM_GREEN_SIZE; |
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79 attributes[i++] = this->gl_config.accum_green_size; |
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80 attributes[i++] = AGL_ACCUM_BLUE_SIZE; |
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81 attributes[i++] = this->gl_config.accum_blue_size; |
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82 attributes[i++] = AGL_ACCUM_ALPHA_SIZE; |
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83 attributes[i++] = this->gl_config.accum_alpha_size; |
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84 } |
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85 if (this->gl_config.stereo) { |
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86 attributes[i++] = AGL_STEREO; |
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87 } |
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88 #if defined(AGL_SAMPLE_BUFFERS_ARB) && defined(AGL_SAMPLES_ARB) |
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89 if (this->gl_config.multisamplebuffers != 0) { |
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90 attributes[i++] = AGL_SAMPLE_BUFFERS_ARB; |
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91 attributes[i++] = this->gl_config.multisamplebuffers; |
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92 } |
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93 if (this->gl_config.multisamplesamples != 0) { |
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94 attributes[i++] = AGL_SAMPLES_ARB; |
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95 attributes[i++] = this->gl_config.multisamplesamples; |
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96 } |
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97 #endif |
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98 if (this->gl_config.accelerated > 0) { |
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99 attributes[i++] = AGL_ACCELERATED; |
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100 attributes[i++] = AGL_NO_RECOVERY; |
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101 } |
1656 | 102 |
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103 attributes[i++] = AGL_ALL_RENDERERS; |
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104 attributes[i] = AGL_NONE; |
0 | 105 |
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106 format = aglChoosePixelFormat(NULL, 0, attributes); |
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107 if (format == NULL) { |
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108 SDL_SetError("Couldn't match OpenGL desired format"); |
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109 return (-1); |
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110 } |
0 | 111 |
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112 glContext = aglCreateContext(format, NULL); |
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113 if (glContext == NULL) { |
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114 SDL_SetError("Couldn't create OpenGL context"); |
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115 return (-1); |
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116 } |
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117 aglDestroyPixelFormat(format); |
0 | 118 |
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119 #if TARGET_API_MAC_CARBON |
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120 noerr = aglSetDrawable(glContext, GetWindowPort(SDL_Window)); |
0 | 121 #else |
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122 noerr = aglSetDrawable(glContext, (AGLDrawable) SDL_Window); |
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123 #endif |
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124 |
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125 if (!noerr) { |
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126 SDL_SetError("Unable to bind GL context to window"); |
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127 return (-1); |
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128 } |
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129 return (0); |
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130 #else |
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131 SDL_SetError("OpenGL support not configured"); |
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132 return (-1); |
0 | 133 #endif |
134 } | |
135 | |
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136 void |
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137 Mac_GL_Quit(_THIS) |
0 | 138 { |
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139 #if SDL_VIDEO_OPENGL |
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140 if (glContext != NULL) { |
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141 aglSetCurrentContext(NULL); |
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142 aglSetDrawable(glContext, NULL); |
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143 aglDestroyContext(glContext); |
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144 glContext = NULL; |
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145 } |
0 | 146 #endif |
147 } | |
148 | |
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149 #if SDL_VIDEO_OPENGL |
0 | 150 |
151 /* Make the current context active */ | |
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152 int |
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153 Mac_GL_MakeCurrent(_THIS) |
0 | 154 { |
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155 int retval; |
0 | 156 |
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157 retval = 0; |
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158 if (!aglSetCurrentContext(glContext)) { |
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159 SDL_SetError("Unable to make GL context current"); |
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160 retval = -1; |
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161 } |
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162 return (retval); |
0 | 163 } |
164 | |
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165 void |
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166 Mac_GL_SwapBuffers(_THIS) |
0 | 167 { |
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168 aglSwapBuffers(glContext); |
0 | 169 } |
170 | |
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171 int |
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172 Mac_GL_LoadLibrary(_THIS, const char *location) |
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173 { |
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174 if (location == NULL) |
1659 | 175 #if __MACH__ |
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176 location = "/System/Library/Frameworks/OpenGL.framework/OpenGL"; |
1659 | 177 #else |
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178 location = "OpenGLLibrary"; |
1659 | 179 #endif |
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180 |
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181 this->hidden->libraryHandle = SDL_LoadObject(location); |
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182 |
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183 this->gl_config.driver_loaded = 1; |
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184 return (this->hidden->libraryHandle != NULL) ? 0 : -1; |
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185 } |
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186 |
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187 void |
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188 Mac_GL_UnloadLibrary(_THIS) |
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189 { |
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190 SDL_UnloadObject(this->hidden->libraryHandle); |
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191 |
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192 this->hidden->libraryHandle = NULL; |
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193 this->gl_config.driver_loaded = 0; |
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194 } |
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195 |
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196 void * |
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197 Mac_GL_GetProcAddress(_THIS, const char *proc) |
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198 { |
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199 return SDL_LoadFunction(this->hidden->libraryHandle, proc); |
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200 } |
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201 |
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202 #endif /* SDL_VIDEO_OPENGL */ |
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203 /* vi: set ts=4 sw=4 expandtab: */ |