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
44 #include "apple_glx.h"
45 #include "apple_xgl_api.h"
46 #include "apple_cgl.h"
47
48 struct _glapi_table * __ogl_framework_api = NULL;
49 struct _glapi_table * __applegl_api = NULL;
50
_apple_glapi_create_table(void)51 static void _apple_glapi_create_table(void) {
52 if (__applegl_api)
53 return;
54
55 __ogl_framework_api = _glapi_create_table_from_handle(apple_cgl_get_dl_handle(), "gl");
56 assert(__ogl_framework_api);
57
58 __applegl_api = malloc(sizeof(struct _glapi_table));
59 assert(__applegl_api);
60 memcpy(__applegl_api, __ogl_framework_api, sizeof(struct _glapi_table));
61
62 _glapi_table_patch(__applegl_api, "ReadPixels", __applegl_glReadPixels);
63 _glapi_table_patch(__applegl_api, "CopyPixels", __applegl_glCopyPixels);
64 _glapi_table_patch(__applegl_api, "CopyColorTable", __applegl_glCopyColorTable);
65 _glapi_table_patch(__applegl_api, "DrawBuffers", __applegl_glDrawBuffer);
66 _glapi_table_patch(__applegl_api, "Viewport", __applegl_glViewport);
67 }
68
apple_glapi_set_dispatch(void)69 void apple_glapi_set_dispatch(void) {
70 _apple_glapi_create_table();
71 _glapi_set_dispatch(__applegl_api);
72 }
73
apple_glapi_oglfw_viewport_scissor(GLint x,GLint y,GLsizei width,GLsizei height)74 void apple_glapi_oglfw_viewport_scissor(GLint x, GLint y, GLsizei width, GLsizei height) {
75 _apple_glapi_create_table();
76 __ogl_framework_api->Viewport(x, y, width, height);
77 __ogl_framework_api->Scissor(x, y, width, height);
78 }
79