Mercurial > sdl-ios-xcode
annotate src/video/maccommon/SDL_macgl.c @ 1525:23a347cfbed8
Fixed bug #38
I'm using SDL 1.2.9 with Visual C++ 7.0 on Windows 2000.
Here's the setup: my game starts in a window, with
SDL_WM_GrabInput(SDL_GRAB_ON) to constrain the cursor to the game window. The
mouse cursor is outside of the window when the game launches, and when the
window appears the cursor is grabbed and placed at the top left corner of the
inside of the game window. At this point, if I click the mouse without moving
it, the SDL_MOUSEBUTTONDOWN event's mouse coordinates are (65535,65535).
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Tue, 14 Mar 2006 06:00:30 +0000 |
| parents | f1781c15934c |
| children | 96c2f89cc7e1 |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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Updated copyright information and removed rcs id lines (problematic in branch merges)
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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 |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
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16 License along with this library; if not, write to the Free Software |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
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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 */ | |
| 32 int Mac_GL_Init(_THIS) | |
| 33 { | |
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34 #if SDL_VIDEO_OPENGL |
| 0 | 35 AGLPixelFormat format; |
| 36 int i = 0; | |
| 37 GLint attributes [ 24 ]; /* 24 is max possible in this setup */ | |
| 38 GLboolean noerr; | |
| 39 | |
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40 /* load the gl driver from a default path */ |
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41 if ( ! this->gl_config.driver_loaded ) { |
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42 /* no driver has been loaded, use default (ourselves) */ |
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43 if ( Mac_GL_LoadLibrary(this, NULL) < 0 ) { |
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44 return(-1); |
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45 } |
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Make sure the OpenGL library is loaded before setting up OpenGL
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46 } |
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Make sure the OpenGL library is loaded before setting up OpenGL
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47 |
| 0 | 48 attributes[i++] = AGL_RGBA; |
| 49 if ( this->gl_config.red_size != 0 && | |
| 50 this->gl_config.blue_size != 0 && | |
| 51 this->gl_config.green_size != 0 ) { | |
| 52 attributes[i++] = AGL_RED_SIZE; | |
| 53 attributes[i++] = this->gl_config.red_size; | |
| 54 attributes[i++] = AGL_GREEN_SIZE; | |
| 55 attributes[i++] = this->gl_config.green_size; | |
| 56 attributes[i++] = AGL_BLUE_SIZE; | |
| 57 attributes[i++] = this->gl_config.blue_size; | |
| 58 attributes[i++] = AGL_ALPHA_SIZE; | |
| 59 attributes[i++] = this->gl_config.alpha_size; | |
| 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 } |
| 0 | 68 if ( this->gl_config.stencil_size != 0 ) { |
| 69 attributes[i++] = AGL_STENCIL_SIZE; | |
| 70 attributes[i++] = this->gl_config.stencil_size; | |
| 71 } | |
| 72 if ( this->gl_config.accum_red_size != 0 && | |
| 73 this->gl_config.accum_blue_size != 0 && | |
| 74 this->gl_config.accum_green_size != 0 ) { | |
| 75 | |
| 76 attributes[i++] = AGL_ACCUM_RED_SIZE; | |
| 77 attributes[i++] = this->gl_config.accum_red_size; | |
| 78 attributes[i++] = AGL_ACCUM_GREEN_SIZE; | |
| 79 attributes[i++] = this->gl_config.accum_green_size; | |
| 80 attributes[i++] = AGL_ACCUM_BLUE_SIZE; | |
| 81 attributes[i++] = this->gl_config.accum_blue_size; | |
| 82 attributes[i++] = AGL_ACCUM_ALPHA_SIZE; | |
| 83 attributes[i++] = this->gl_config.accum_alpha_size; | |
| 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 |
| 0 | 98 attributes[i++] = AGL_ALL_RENDERERS; |
| 99 attributes[i] = AGL_NONE; | |
| 100 | |
| 101 format = aglChoosePixelFormat(NULL, 0, attributes); | |
| 102 if ( format == NULL ) { | |
| 103 SDL_SetError("Couldn't match OpenGL desired format"); | |
| 104 return(-1); | |
| 105 } | |
| 106 | |
| 107 glContext = aglCreateContext(format, NULL); | |
| 108 if ( glContext == NULL ) { | |
| 109 SDL_SetError("Couldn't create OpenGL context"); | |
| 110 return(-1); | |
| 111 } | |
| 112 aglDestroyPixelFormat(format); | |
| 113 | |
| 114 #if TARGET_API_MAC_CARBON | |
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115 noerr = aglSetDrawable(glContext, GetWindowPort(SDL_Window)); |
| 0 | 116 #else |
| 117 noerr = aglSetDrawable(glContext, (AGLDrawable)SDL_Window); | |
| 118 #endif | |
| 119 | |
| 120 if(!noerr) { | |
| 121 SDL_SetError("Unable to bind GL context to window"); | |
| 122 return(-1); | |
| 123 } | |
| 124 return(0); | |
| 125 #else | |
| 126 SDL_SetError("OpenGL support not configured"); | |
| 127 return(-1); | |
| 128 #endif | |
| 129 } | |
| 130 | |
| 131 void Mac_GL_Quit(_THIS) | |
| 132 { | |
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133 #if SDL_VIDEO_OPENGL |
| 0 | 134 if ( glContext != NULL ) { |
| 135 aglSetCurrentContext(NULL); | |
| 136 aglSetDrawable(glContext, NULL); | |
| 137 aglDestroyContext(glContext); | |
| 138 glContext = NULL; | |
| 139 } | |
| 140 #endif | |
| 141 } | |
| 142 | |
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parents:
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diff
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143 #if SDL_VIDEO_OPENGL |
| 0 | 144 |
| 145 /* Make the current context active */ | |
| 146 int Mac_GL_MakeCurrent(_THIS) | |
| 147 { | |
| 148 int retval; | |
| 149 | |
| 150 retval = 0; | |
| 151 if( ! aglSetCurrentContext(glContext) ) { | |
| 152 SDL_SetError("Unable to make GL context current"); | |
| 153 retval = -1; | |
| 154 } | |
| 155 return(retval); | |
| 156 } | |
| 157 | |
| 158 void Mac_GL_SwapBuffers(_THIS) | |
| 159 { | |
| 160 aglSwapBuffers(glContext); | |
| 161 } | |
| 162 | |
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163 int Mac_GL_LoadLibrary(_THIS, const char *location) |
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164 { |
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165 if (location == NULL) |
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166 location = "OpenGLLibrary"; |
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167 |
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168 this->hidden->libraryHandle = SDL_LoadObject(location); |
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169 |
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170 this->gl_config.driver_loaded = 1; |
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171 return (this->hidden->libraryHandle != NULL) ? 0 : -1; |
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172 } |
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173 |
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174 void Mac_GL_UnloadLibrary(_THIS) |
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175 { |
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176 SDL_UnloadObject(this->hidden->libraryHandle); |
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177 |
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178 this->hidden->libraryHandle = NULL; |
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179 this->gl_config.driver_loaded = 0; |
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180 } |
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181 |
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182 void* Mac_GL_GetProcAddress(_THIS, const char *proc) |
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183 { |
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184 return SDL_LoadFunction( this->hidden->libraryHandle, proc ); |
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185 } |
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186 |
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187 #endif /* SDL_VIDEO_OPENGL */ |
| 0 | 188 |