1f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org/* 2f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org Copyright (c) 2008 Apple Inc. 3f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 4f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org Permission is hereby granted, free of charge, to any person 5f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org obtaining a copy of this software and associated documentation files 6f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (the "Software"), to deal in the Software without restriction, 7f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org including without limitation the rights to use, copy, modify, merge, 8f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org publish, distribute, sublicense, and/or sell copies of the Software, 9f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org and to permit persons to whom the Software is furnished to do so, 10f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org subject to the following conditions: 11f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 12f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org The above copyright notice and this permission notice shall be 13f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org included in all copies or substantial portions of the Software. 14f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 15f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 16f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 17f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 18f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org NONINFRINGEMENT. IN NO EVENT SHALL THE ABOVE LISTED COPYRIGHT 19f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org HOLDER(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 20f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, 21f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 22f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org DEALINGS IN THE SOFTWARE. 23f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 24f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org Except as contained in this notice, the name(s) of the above 25f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org copyright holders shall not be used in advertising or otherwise to 26f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org promote the sale, use or other dealings in this Software without 27f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org prior written authorization. 28f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org*/ 29f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 30f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include <stdbool.h> 31f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include <stdio.h> 32f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include <stdlib.h> 33f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include <dlfcn.h> 34f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 35f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "apple_cgl.h" 36f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#include "apple_glx.h" 37f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 38f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#ifndef OPENGL_FRAMEWORK_PATH 39f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#define OPENGL_FRAMEWORK_PATH "/System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL" 40f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org#endif 41f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 42f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstatic void *dl_handle = NULL; 43f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 44f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstruct apple_cgl_api apple_cgl; 45f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 46f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstatic bool initialized = false; 47f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 48f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgstatic void * 49f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgsym(void *h, const char *name) 50f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 51f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org void *s; 52f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 53f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org s = dlsym(h, name); 54f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 55f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (NULL == s) { 56f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org fprintf(stderr, "error: %s\n", dlerror()); 57f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org abort(); 58f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 59f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 60f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return s; 61f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 62f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 63f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid 64f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgapple_cgl_init(void) 65f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 66f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org void *h; 67f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org const char *opengl_framework_path; 68f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 69f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (initialized) 70f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return; 71f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 72f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org opengl_framework_path = getenv("OPENGL_FRAMEWORK_PATH"); 73f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (!opengl_framework_path) { 74f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org opengl_framework_path = OPENGL_FRAMEWORK_PATH; 75f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 76f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 77f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org (void) dlerror(); /*drain dlerror */ 78f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org h = dlopen(opengl_framework_path, RTLD_NOW); 79f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 80f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (NULL == h) { 81f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org fprintf(stderr, "error: unable to dlopen %s : %s\n", 82f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org opengl_framework_path, dlerror()); 83f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org abort(); 84f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 85f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 86f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org dl_handle = h; 87f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 88f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org apple_cgl.get_version = sym(h, "CGLGetVersion"); 89f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 90f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org apple_cgl.get_version(&apple_cgl.version_major, &apple_cgl.version_minor); 91f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 92f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org apple_glx_diagnostic("CGL major %d minor %d\n", apple_cgl.version_major, apple_cgl.version_minor); 93f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 94f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org if (1 != apple_cgl.version_major) { 95f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org fprintf(stderr, "WARNING: the CGL major version has changed!\n" 96f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org "libGL may be incompatible!\n"); 97f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org } 98f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 99f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org apple_cgl.choose_pixel_format = sym(h, "CGLChoosePixelFormat"); 100f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org apple_cgl.destroy_pixel_format = sym(h, "CGLDestroyPixelFormat"); 101f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 102f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org apple_cgl.clear_drawable = sym(h, "CGLClearDrawable"); 103f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org apple_cgl.flush_drawable = sym(h, "CGLFlushDrawable"); 104f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 105f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org apple_cgl.create_context = sym(h, "CGLCreateContext"); 106f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org apple_cgl.destroy_context = sym(h, "CGLDestroyContext"); 107f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 108f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org apple_cgl.set_current_context = sym(h, "CGLSetCurrentContext"); 109f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org apple_cgl.get_current_context = sym(h, "CGLGetCurrentContext"); 110f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org apple_cgl.error_string = sym(h, "CGLErrorString"); 111f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 112f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org apple_cgl.set_off_screen = sym(h, "CGLSetOffScreen"); 113f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 114f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org apple_cgl.copy_context = sym(h, "CGLCopyContext"); 115f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 116f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org apple_cgl.create_pbuffer = sym(h, "CGLCreatePBuffer"); 117f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org apple_cgl.destroy_pbuffer = sym(h, "CGLDestroyPBuffer"); 118f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org apple_cgl.set_pbuffer = sym(h, "CGLSetPBuffer"); 119f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 120f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org initialized = true; 121f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 122f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org 123f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgvoid * 124f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.orgapple_cgl_get_dl_handle(void) 125f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org{ 126f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org return dl_handle; 127f2ba7591b1407a7ee9209f842c50696914dc2dedkbr@chromium.org} 128