diff options
Diffstat (limited to 'distrib/sdl-1.2.15/src/video/maccommon/SDL_macgl.c')
| -rw-r--r-- | distrib/sdl-1.2.15/src/video/maccommon/SDL_macgl.c | 197 |
1 files changed, 197 insertions, 0 deletions
diff --git a/distrib/sdl-1.2.15/src/video/maccommon/SDL_macgl.c b/distrib/sdl-1.2.15/src/video/maccommon/SDL_macgl.c new file mode 100644 index 0000000..b7ded9b --- /dev/null +++ b/distrib/sdl-1.2.15/src/video/maccommon/SDL_macgl.c @@ -0,0 +1,197 @@ +/* + SDL - Simple DirectMedia Layer + Copyright (C) 1997-2012 Sam Lantinga + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + Sam Lantinga + slouken@libsdl.org +*/ +#include "SDL_config.h" + +/* AGL implementation of SDL OpenGL support */ + +#include "SDL_lowvideo.h" +#include "SDL_macgl_c.h" +#include "SDL_loadso.h" + + +/* krat: adding OpenGL support */ +int Mac_GL_Init(_THIS) +{ +#if SDL_VIDEO_OPENGL + AGLPixelFormat format; + int i = 0; + GLint attributes [ 26 ]; /* 26 is max possible in this setup */ + GLboolean noerr; + + /* load the gl driver from a default path */ + if ( ! this->gl_config.driver_loaded ) { + /* no driver has been loaded, use default (ourselves) */ + if ( Mac_GL_LoadLibrary(this, NULL) < 0 ) { + return(-1); + } + } + + attributes[i++] = AGL_RGBA; + if ( this->gl_config.red_size != 0 && + this->gl_config.blue_size != 0 && + this->gl_config.green_size != 0 ) { + attributes[i++] = AGL_RED_SIZE; + attributes[i++] = this->gl_config.red_size; + attributes[i++] = AGL_GREEN_SIZE; + attributes[i++] = this->gl_config.green_size; + attributes[i++] = AGL_BLUE_SIZE; + attributes[i++] = this->gl_config.blue_size; + attributes[i++] = AGL_ALPHA_SIZE; + attributes[i++] = this->gl_config.alpha_size; + } + if ( this->gl_config.double_buffer ) { + attributes[i++] = AGL_DOUBLEBUFFER; + } + if ( this->gl_config.depth_size != 0 ) { + attributes[i++] = AGL_DEPTH_SIZE; + attributes[i++] = this->gl_config.depth_size; + } + if ( this->gl_config.stencil_size != 0 ) { + attributes[i++] = AGL_STENCIL_SIZE; + attributes[i++] = this->gl_config.stencil_size; + } + if ( this->gl_config.accum_red_size != 0 && + this->gl_config.accum_blue_size != 0 && + this->gl_config.accum_green_size != 0 ) { + + attributes[i++] = AGL_ACCUM_RED_SIZE; + attributes[i++] = this->gl_config.accum_red_size; + attributes[i++] = AGL_ACCUM_GREEN_SIZE; + attributes[i++] = this->gl_config.accum_green_size; + attributes[i++] = AGL_ACCUM_BLUE_SIZE; + attributes[i++] = this->gl_config.accum_blue_size; + attributes[i++] = AGL_ACCUM_ALPHA_SIZE; + attributes[i++] = this->gl_config.accum_alpha_size; + } + if ( this->gl_config.stereo ) { + attributes[i++] = AGL_STEREO; + } +#if defined(AGL_SAMPLE_BUFFERS_ARB) && defined(AGL_SAMPLES_ARB) + if ( this->gl_config.multisamplebuffers != 0 ) { + attributes[i++] = AGL_SAMPLE_BUFFERS_ARB; + attributes[i++] = this->gl_config.multisamplebuffers; + } + if ( this->gl_config.multisamplesamples != 0 ) { + attributes[i++] = AGL_SAMPLES_ARB; + attributes[i++] = this->gl_config.multisamplesamples; + } +#endif + if ( this->gl_config.accelerated > 0 ) { + attributes[i++] = AGL_ACCELERATED; + attributes[i++] = AGL_NO_RECOVERY; + } + + attributes[i++] = AGL_ALL_RENDERERS; + attributes[i] = AGL_NONE; + + format = aglChoosePixelFormat(NULL, 0, attributes); + if ( format == NULL ) { + SDL_SetError("Couldn't match OpenGL desired format"); + return(-1); + } + + glContext = aglCreateContext(format, NULL); + if ( glContext == NULL ) { + SDL_SetError("Couldn't create OpenGL context"); + return(-1); + } + aglDestroyPixelFormat(format); + + #if TARGET_API_MAC_CARBON + noerr = aglSetDrawable(glContext, GetWindowPort(SDL_Window)); + #else + noerr = aglSetDrawable(glContext, (AGLDrawable)SDL_Window); + #endif + + if(!noerr) { + SDL_SetError("Unable to bind GL context to window"); + return(-1); + } + return(0); +#else + SDL_SetError("OpenGL support not configured"); + return(-1); +#endif +} + +void Mac_GL_Quit(_THIS) +{ +#if SDL_VIDEO_OPENGL + if ( glContext != NULL ) { + aglSetCurrentContext(NULL); + aglSetDrawable(glContext, NULL); + aglDestroyContext(glContext); + glContext = NULL; + } +#endif +} + +#if SDL_VIDEO_OPENGL + +/* Make the current context active */ +int Mac_GL_MakeCurrent(_THIS) +{ + int retval; + + retval = 0; + if( ! aglSetCurrentContext(glContext) ) { + SDL_SetError("Unable to make GL context current"); + retval = -1; + } + return(retval); +} + +void Mac_GL_SwapBuffers(_THIS) +{ + aglSwapBuffers(glContext); +} + +int Mac_GL_LoadLibrary(_THIS, const char *location) +{ + if (location == NULL) +#if __MACH__ + location = "/System/Library/Frameworks/OpenGL.framework/OpenGL"; +#else + location = "OpenGLLibrary"; +#endif + + this->hidden->libraryHandle = SDL_LoadObject(location); + + this->gl_config.driver_loaded = 1; + return (this->hidden->libraryHandle != NULL) ? 0 : -1; +} + +void Mac_GL_UnloadLibrary(_THIS) +{ + SDL_UnloadObject(this->hidden->libraryHandle); + + this->hidden->libraryHandle = NULL; + this->gl_config.driver_loaded = 0; +} + +void* Mac_GL_GetProcAddress(_THIS, const char *proc) +{ + return SDL_LoadFunction( this->hidden->libraryHandle, proc ); +} + +#endif /* SDL_VIDEO_OPENGL */ + |