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/*
* GLX implementation that uses Apple's OpenGL.framework
*
* Copyright (c) 2007-2011 Apple Inc.
* Copyright (c) 2004 Torrey T. Lyons. All Rights Reserved.
* Copyright (c) 2002 Greg Parker. All Rights Reserved.
*
* Portions of this file are copied from Mesa's xf86glx.c,
* which contains the following copyright:
*
* Copyright 1998-1999 Precision Insight, Inc., Cedar Park, Texas.
* All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE ABOVE LISTED COPYRIGHT HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
* DEALINGS IN THE SOFTWARE.
*/
#include <assert.h>
#include <dlfcn.h>
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <GL/gl.h>
#include "glapi.h"
#include "glapitable.h"
#include "main/dispatch.h"
#include "apple_glx.h"
#include "apple_xgl_api.h"
#ifndef OPENGL_FRAMEWORK_PATH
#define OPENGL_FRAMEWORK_PATH "/System/Library/Frameworks/OpenGL.framework/OpenGL"
#endif
struct _glapi_table * __ogl_framework_api = NULL;
struct _glapi_table * __applegl_api = NULL;
void apple_glapi_set_dispatch(void) {
static void *handle;
const char *opengl_framework_path;
if(__applegl_api) {
_glapi_set_dispatch(__applegl_api);
return;
}
opengl_framework_path = getenv("OPENGL_FRAMEWORK_PATH");
if (!opengl_framework_path) {
opengl_framework_path = OPENGL_FRAMEWORK_PATH;
}
(void) dlerror(); /*drain dlerror */
handle = dlopen(opengl_framework_path, RTLD_LOCAL);
if (!handle) {
fprintf(stderr, "error: unable to dlopen %s : %s\n",
opengl_framework_path, dlerror());
abort();
}
__ogl_framework_api = _glapi_create_table_from_handle(handle, "gl");
assert(__ogl_framework_api);
__applegl_api = malloc(sizeof(struct _glapi_table));
assert(__applegl_api);
memcpy(__applegl_api, __ogl_framework_api, sizeof(struct _glapi_table));
SET_ReadPixels(__applegl_api, __applegl_glReadPixels);
SET_CopyPixels(__applegl_api, __applegl_glCopyPixels);
SET_CopyColorTable(__applegl_api, __applegl_glCopyColorTable);
SET_DrawBuffer(__applegl_api, __applegl_glDrawBuffer);
SET_DrawBuffersARB(__applegl_api, __applegl_glDrawBuffersARB);
SET_Viewport(__applegl_api, __applegl_glViewport);
_glapi_set_dispatch(__applegl_api);
}
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