Mercurial > sdl-ios-xcode
view src/video/maccommon/SDL_macgl.c @ 1483:52a61c7b323b
*** empty log message ***
author | Sam Lantinga <slouken@libsdl.org> |
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date | Wed, 08 Mar 2006 06:21:04 +0000 |
parents | f1781c15934c |
children | 96c2f89cc7e1 |
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/* SDL - Simple DirectMedia Layer Copyright (C) 1997-2006 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 [ 24 ]; /* 24 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 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) location = "OpenGLLibrary"; 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 */