1 /* 2 * GLX implementation that uses Apple's OpenGL.framework 3 * 4 * Copyright (c) 2007-2011 Apple Inc. 5 * Copyright (c) 2004 Torrey T. Lyons. All Rights Reserved. 6 * Copyright (c) 2002 Greg Parker. All Rights Reserved. 7 * 8 * Portions of this file are copied from Mesa's xf86glx.c, 9 * which contains the following copyright: 10 * 11 * Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas. 12 * All Rights Reserved. 13 * 14 * Permission is hereby granted, free of charge, to any person obtaining a 15 * copy of this software and associated documentation files (the "Software"), 16 * to deal in the Software without restriction, including without limitation 17 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 18 * and/or sell copies of the Software, and to permit persons to whom the 19 * Software is furnished to do so, subject to the following conditions: 20 * 21 * The above copyright notice and this permission notice shall be included in 22 * all copies or substantial portions of the Software. 23 * 24 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 25 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 26 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 27 * THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR 28 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, 29 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 30 * DEALINGS IN THE SOFTWARE. 31 */ 32 33 #include <assert.h> 34 #include <dlfcn.h> 35 #include <stdlib.h> 36 #include <string.h> 37 #include <stdio.h> 38 39 #include <GL/gl.h> 40 41 #include "glapi.h" 42 #include "glapitable.h" 43 #include "main/dispatch.h" 44 45 #include "apple_glx.h" 46 #include "apple_xgl_api.h" 47 #include "apple_cgl.h" 48 49 struct _glapi_table * __ogl_framework_api = NULL; 50 struct _glapi_table * __applegl_api = NULL; 51 52 static void _apple_glapi_create_table(void) { 53 if (__applegl_api) 54 return; 55 56 __ogl_framework_api = _glapi_create_table_from_handle(apple_cgl_get_dl_handle(), "gl"); 57 assert(__ogl_framework_api); 58 59 __applegl_api = malloc(sizeof(struct _glapi_table)); 60 assert(__applegl_api); 61 memcpy(__applegl_api, __ogl_framework_api, sizeof(struct _glapi_table)); 62 63 SET_ReadPixels(__applegl_api, __applegl_glReadPixels); 64 SET_CopyPixels(__applegl_api, __applegl_glCopyPixels); 65 SET_CopyColorTable(__applegl_api, __applegl_glCopyColorTable); 66 SET_DrawBuffer(__applegl_api, __applegl_glDrawBuffer); 67 SET_DrawBuffersARB(__applegl_api, __applegl_glDrawBuffersARB); 68 SET_Viewport(__applegl_api, __applegl_glViewport); 69 } 70 71 void apple_glapi_set_dispatch(void) { 72 _apple_glapi_create_table(); 73 _glapi_set_dispatch(__applegl_api); 74 } 75 76 void apple_glapi_oglfw_viewport_scissor(GLint x, GLint y, GLsizei width, GLsizei height) { 77 _apple_glapi_create_table(); 78 __ogl_framework_api->Viewport(x, y, width, height); 79 __ogl_framework_api->Scissor(x, y, width, height); 80 } 81