| 1 | # Copyright (c) 2001, Stanford University
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| 2 | # All rights reserved.
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| 3 | #
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| 4 | # See the file LICENSE.txt for information on redistributing this software.
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| 5 |
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| 6 |
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| 7 | import sys
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| 8 | import apiutil
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| 9 |
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| 10 |
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| 11 | keys = apiutil.GetDispatchedFunctions(sys.argv[1]+"/APIspec.txt")
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| 12 |
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| 13 | apiutil.CopyrightC()
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| 14 |
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| 15 | print """
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| 16 | /* DO NOT EDIT - THIS FILE GENERATED BY THE glloader.py SCRIPT */
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| 17 | #include "cr_error.h"
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| 18 | #include "cr_dll.h"
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| 19 | #include "cr_spu.h"
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| 20 | #include "cr_string.h"
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| 21 | #include "cr_error.h"
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| 22 | #include "cr_environment.h"
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| 23 |
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| 24 | #include <stdio.h>
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| 25 | #if defined(WINDOWS)
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| 26 | #include <windows.h>
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| 27 | #include <process.h>
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| 28 | #include <direct.h>
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| 29 | #define SYSTEM_GL "opengl32.dll"
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| 30 | #elif defined (DARWIN)
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| 31 | #define SYSTEM_GL "libGL.dylib"
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| 32 | #define SYSTEM_CGL "OpenGL"
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| 33 | #define SYSTEM_AGL "AGL"
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| 34 | #elif defined(IRIX) || defined(IRIX64) || defined(Linux) || defined(FreeBSD) || defined(AIX) || defined(SunOS) || defined(OSF1)
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| 35 | #if defined(Linux)
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| 36 | #include <string.h>
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| 37 | #endif
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| 38 | #if defined(AIX)
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| 39 | #define SYSTEM_GL "libGL.o"
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| 40 | #else
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| 41 | #define SYSTEM_GL "libGL.so.1"
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| 42 | #endif
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| 43 | typedef void (*glxfuncptr)();
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| 44 | extern glxfuncptr glxGetProcAddressARB( const GLubyte *name );
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| 45 | #else
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| 46 | #error I don't know where your system's GL lives. Too bad.
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| 47 | #endif
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| 48 |
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| 49 | static CRDLL *glDll = NULL;
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| 50 |
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| 51 | #ifdef DARWIN
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| 52 | #define SYSTEM_GL_LIB_DIR "/System/Library/Frameworks/OpenGL.framework/Libraries"
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| 53 | #define SYSTEM_CGL_DIR "/System/Library/Frameworks/OpenGL.framework"
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| 54 | #define SYSTEM_AGL_DIR "/System/Library/Frameworks/AGL.framework"
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| 55 |
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| 56 | static CRDLL *cglDll = NULL;
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| 57 | static CRDLL *aglDll = NULL;
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| 58 | #endif
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| 59 |
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| 60 | #if defined(WINDOWS)
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| 61 | #define GLLOADER_APIENTRY __stdcall
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| 62 | #else
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| 63 | #define GLLOADER_APIENTRY
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| 64 | #endif
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| 65 |
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| 66 |
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| 67 | /*
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| 68 | * Add an entry to the SPUNamedFunctionTable
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| 69 | */
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| 70 | static int
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| 71 | fillin( SPUNamedFunctionTable *entry, const char *funcName, SPUGenericFunction funcPtr )
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| 72 | {
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| 73 | if (funcPtr) {
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| 74 | entry->name = crStrdup( funcName );
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| 75 | entry->fn = funcPtr;
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| 76 | return 1;
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| 77 | }
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| 78 | return 0;
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| 79 | }
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| 80 |
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| 81 | #ifndef WINDOWS
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| 82 | static int FileExists(char *directory, char *filename)
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| 83 | {
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| 84 | FILE *f;
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| 85 | char fullFilename[8096];
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| 86 |
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| 87 | crStrcpy(fullFilename, directory);
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| 88 | crStrcat(fullFilename, "/");
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| 89 | crStrcat(fullFilename, filename);
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| 90 |
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| 91 | f = fopen(fullFilename, "r");
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| 92 | if (f) {
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| 93 | fclose(f);
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| 94 | return 1;
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| 95 | }
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| 96 | else {
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| 97 | return 0;
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| 98 | }
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| 99 | }
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| 100 | #endif
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| 101 |
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| 102 |
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| 103 | /*
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| 104 | * Locate the native OpenGL library, open it and return shared library
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| 105 | * handle.
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| 106 | */
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| 107 | static CRDLL *
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| 108 | __findSystemLib( const char *provided_system_path, char *lib )
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| 109 | {
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| 110 | CRDLL *dll;
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| 111 | char system_path[8096];
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| 112 |
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| 113 | memset(system_path, 0, sizeof(system_path));
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| 114 |
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| 115 | if (provided_system_path && (crStrlen(provided_system_path) > 0) )
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| 116 | {
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| 117 | crStrcpy( system_path, provided_system_path );
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| 118 | }
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| 119 | else
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| 120 | {
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| 121 | #if defined(WINDOWS)
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| 122 | GetSystemDirectory(system_path, MAX_PATH);
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| 123 | #elif defined(IRIX) || defined(IRIX64)
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| 124 | #ifdef IRIX_64BIT
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| 125 | crStrcpy( system_path, "/usr/lib64" );
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| 126 | #else
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| 127 | crStrcpy( system_path, "/usr/lib32" );
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| 128 | #endif
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| 129 | #elif defined(PLAYSTATION2)
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| 130 | crStrcpy( system_path, "/usr/X11R6/lib" );
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| 131 | #else
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| 132 | /* On RedHat 9, the correct default system directory
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| 133 | * is /usr/lib/tls/ (and if /usr/lib/ is used,
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| 134 | * the dynamic loader will generate a floating point
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| 135 | * exception SIGFPE). On other systems, including
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| 136 | * earlier versions of RedHat, the OpenGL library
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| 137 | * lives in /usr/lib. We'll use the /usr/lib/tls/
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| 138 | * version if it exists; otherwise, we'll use /usr/lib.
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| 139 | */
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| 140 | /*crStrcpy(system_path, "/usr/lib");*/
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| 141 | #if defined(__linux__) && defined(__amd64__)
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| 142 | /*if (sizeof(void *) == 8 && FileExists("/usr/lib64", lib)) {
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| 143 | crStrcat(system_path, "64");
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| 144 | }*/
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| 145 | #endif
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| 146 | /*if (FileExists("/usr/lib/tls", lib) ||
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| 147 | FileExists("/usr/lib64/tls", lib)) {
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| 148 | crStrcat(system_path, "/tls");
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| 149 | }*/
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| 150 | #endif
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| 151 | }
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| 152 | #if !defined(__linux__) && !defined(SunOS)
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| 153 | crStrcat( system_path, "/" );
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| 154 | #endif
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| 155 | crStrcat( system_path, lib );
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| 156 | dll = crDLLOpen( system_path, 1 /*resolveGlobal*/ );
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| 157 | return dll;
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| 158 | }
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| 159 |
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| 160 |
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| 161 | static CRDLL *
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| 162 | #ifdef DARWIN
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| 163 | __findSystemGL( const char *provided_system_path, const char *default_system_path, char *provided_lib_name )
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| 164 | #else
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| 165 | __findSystemGL( const char *provided_system_path )
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| 166 | #endif
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| 167 | {
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| 168 | #ifdef DARWIN
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| 169 | const char *the_path = (provided_system_path && crStrlen(provided_system_path) > 0) ? provided_system_path : default_system_path;
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| 170 |
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| 171 | /* Fallback for loading frameworks */
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| 172 | if( !provided_lib_name )
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| 173 | return crDLLOpen( the_path, 1 );
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| 174 | else
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| 175 | return __findSystemLib( the_path, provided_lib_name );
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| 176 | #else
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| 177 | return __findSystemLib( provided_system_path, SYSTEM_GL );
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| 178 | #endif
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| 179 | }
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| 180 |
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| 181 | static SPUGenericFunction
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| 182 | findExtFunction( const crOpenGLInterface *interface, const char *funcName )
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| 183 | {
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| 184 | #ifdef WINDOWS
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| 185 | if (interface->wglGetProcAddress)
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| 186 | return (SPUGenericFunction) interface->wglGetProcAddress( funcName );
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| 187 | else
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| 188 | return (SPUGenericFunction) NULL;
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| 189 | #else
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| 190 | /* XXX for some reason, the NVIDIA glXGetProcAddressARB() function
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| 191 | * returns pointers that cause Chromium to crash. If we use the
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| 192 | * pointer returned by crDLLGetNoError() instead, we're OK.
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| 193 | */
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| 194 | SPUGenericFunction f = crDLLGetNoError(glDll, funcName);
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| 195 | if (f)
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| 196 | return f;
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| 197 | #if !defined(DARWIN)
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| 198 | else if (interface->glXGetProcAddressARB)
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| 199 | return interface->glXGetProcAddressARB( (const GLubyte *) funcName );
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| 200 | #endif
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| 201 | else
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| 202 | return NULL;
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| 203 | #endif
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| 204 | }
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| 205 | """
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| 206 |
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| 207 |
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| 208 | def IsExtensionFunc(func_name):
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| 209 | """Determine if the named function is a core function, or extension."""
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| 210 | cat = apiutil.Category(func_name)
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| 211 | if cat == "1.0" or cat == "1.1" or cat == "1.2" or cat == "1.3":
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| 212 | return 0
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| 213 | else:
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| 214 | return 1
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| 215 |
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| 216 | #
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| 217 | # Generate a no-op function.
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| 218 | #
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| 219 | def GenerateNop(func_name):
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| 220 | return_type = apiutil.ReturnType(func_name);
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| 221 | params = apiutil.Parameters(func_name)
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| 222 | print 'static %s GLLOADER_APIENTRY Nop%s(%s)' % (return_type, func_name, apiutil.MakeDeclarationString(params))
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| 223 | print '{'
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| 224 | for (name, type, vecSize) in params:
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| 225 | if name != "":
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| 226 | print '\t(void) %s;' % name
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| 227 | if apiutil.ReturnType(func_name) != 'void':
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| 228 | print '\treturn 0;'
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| 229 | print '}'
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| 230 | print ''
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| 231 |
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| 232 |
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| 233 |
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| 234 | #
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| 235 | # Make no-op funcs for all OpenGL extension functions
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| 236 | #
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| 237 | for func_name in keys:
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| 238 | if IsExtensionFunc(func_name):
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| 239 | GenerateNop(func_name)
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| 240 |
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| 241 |
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| 242 | #
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| 243 | # Generate the crLoadOpenGL() function
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| 244 | #
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| 245 | print """
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| 246 | void
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| 247 | crUnloadOpenGL( void )
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| 248 | {
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| 249 | crDLLClose( glDll );
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| 250 | glDll = NULL;
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| 251 |
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| 252 | #ifdef DARWIN
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| 253 | crDLLClose( cglDll );
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| 254 | cglDll = NULL;
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| 255 |
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| 256 | crDLLClose( aglDll );
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| 257 | aglDll = NULL;
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| 258 | #endif
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| 259 | }
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| 260 |
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| 261 | /*
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| 262 | * Initialize the 'interface' structure with the WGL or GLX window system
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| 263 | * interface functions.
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| 264 | * Then, fill in the table with (name, pointer) pairs for all the core
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| 265 | * OpenGL entrypoint functions. But only if table is not NULL
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| 266 | * Return: number of entries placed in table[], or 0 if error.
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| 267 | */
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| 268 | int
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| 269 | crLoadOpenGL( crOpenGLInterface *interface, SPUNamedFunctionTable table[] )
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| 270 | {
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| 271 | static const char *coreFunctions[] = {
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| 272 | """
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| 273 |
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| 274 | for func_name in keys:
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| 275 | if not IsExtensionFunc(func_name):
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| 276 | print '\t\t"gl%s",' % func_name
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| 277 |
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| 278 | print """
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| 279 | NULL
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| 280 | };
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| 281 | SPUNamedFunctionTable *entry = table;
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| 282 | int i;
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| 283 |
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| 284 | const char *env_syspath = crGetenv( "CR_SYSTEM_GL_PATH" );
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| 285 | #ifdef DARWIN
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| 286 | const char *env_cgl_syspath = crGetenv( "CR_SYSTEM_CGL_PATH" );
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| 287 | const char *env_agl_syspath = crGetenv( "CR_SYSTEM_AGL_PATH" );
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| 288 | #endif
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| 289 |
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| 290 | crDebug( "Looking for the system's OpenGL library..." );
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| 291 | #ifdef DARWIN
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| 292 | glDll = __findSystemGL( env_syspath, SYSTEM_GL_LIB_DIR, SYSTEM_GL );
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| 293 | #else
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| 294 | glDll = __findSystemGL( env_syspath );
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| 295 | #endif
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| 296 | if (!glDll)
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| 297 | {
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| 298 | crError("Unable to find system OpenGL!");
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| 299 | return 0;
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| 300 | }
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| 301 |
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| 302 | crDebug( "Found it in %s.", !env_syspath ? "default path" : env_syspath );
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| 303 |
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| 304 | #ifdef DARWIN
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| 305 | crDebug( "Looking for the system's CGL library..." );
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| 306 | cglDll = __findSystemGL( env_cgl_syspath, SYSTEM_CGL_DIR, SYSTEM_CGL );
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| 307 | if (!cglDll)
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| 308 | {
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| 309 | crError("Unable to find system CGL!");
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| 310 | return 0;
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| 311 | }
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| 312 |
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| 313 | crDebug( "Found it in %s.", !env_cgl_syspath ? "default path" : env_cgl_syspath );
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| 314 |
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| 315 | crDebug( "Looking for the system's AGL library..." );
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| 316 | aglDll = __findSystemGL( env_agl_syspath, SYSTEM_AGL_DIR, SYSTEM_AGL );
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| 317 | if (!aglDll)
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| 318 | {
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| 319 | crError("Unable to find system AGL!");
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| 320 | return 0;
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| 321 | }
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| 322 |
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| 323 | crDebug( "Found it in %s.", !env_agl_syspath ? "default path" : env_agl_syspath );
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| 324 | #endif
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| 325 | """
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| 326 |
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| 327 | useful_wgl_functions = [
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| 328 | "wglGetProcAddress",
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| 329 | "wglMakeCurrent",
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| 330 | "wglSwapBuffers",
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| 331 | "wglCreateContext",
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| 332 | "wglDeleteContext",
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| 333 | "wglGetCurrentContext",
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| 334 | "wglChoosePixelFormat",
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| 335 | "wglDescribePixelFormat",
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| 336 | "wglSetPixelFormat",
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| 337 | "wglChoosePixelFormatEXT",
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| 338 | "wglGetPixelFormatAttribivEXT",
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| 339 | "wglGetPixelFormatAttribfvEXT",
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| 340 | "glGetString"
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| 341 | ]
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| 342 | useful_agl_functions = [
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| 343 | "aglCreateContext",
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| 344 | "aglDestroyContext",
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| 345 | "aglSetCurrentContext",
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| 346 | "aglSwapBuffers",
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| 347 | "aglChoosePixelFormat",
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| 348 | "aglDestroyPixelFormat",
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| 349 | "aglDescribePixelFormat",
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| 350 | "aglGetCurrentContext",
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| 351 | "aglSetDrawable",
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| 352 | "aglGetDrawable",
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| 353 | "aglSetFullScreen",
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| 354 | "aglUpdateContext",
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| 355 | "aglUseFont",
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| 356 | "aglSetInteger",
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| 357 | "aglGetInteger",
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| 358 | "aglGetError",
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| 359 | "aglEnable",
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| 360 | "aglDisable"
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| 361 | ]
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| 362 | in_gl_functions = [
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| 363 | "CGLGetCurrentContext",
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| 364 | "CGLSetCurrentContext"
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| 365 | ]
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| 366 | useful_cgl_functions = [
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| 367 | "CGLChoosePixelFormat",
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| 368 | "CGLDestroyPixelFormat",
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| 369 | "CGLDescribePixelFormat",
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| 370 | "CGLQueryRendererInfo",
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| 371 | "CGLDestroyRendererInfo",
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| 372 | "CGLDescribeRenderer",
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| 373 | "CGLCreateContext",
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| 374 | "CGLDestroyContext",
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| 375 | "CGLCopyContext",
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| 376 | "CGLCreatePBuffer",
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| 377 | "CGLDestroyPBuffer",
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| 378 | "CGLDescribePBuffer",
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| 379 | "CGLTexImagePBuffer",
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| 380 | "CGLSetOffScreen",
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| 381 | "CGLGetOffScreen",
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| 382 | "CGLSetFullScreen",
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| 383 | "CGLSetPBuffer",
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| 384 | "CGLGetPBuffer",
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| 385 | "CGLClearDrawable",
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| 386 | "CGLFlushDrawable",
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| 387 | "CGLEnable",
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| 388 | "CGLDisable",
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| 389 | "CGLIsEnabled",
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| 390 | "CGLSetParameter",
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| 391 | "CGLGetParameter",
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| 392 | "CGLSetVirtualScreen",
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| 393 | "CGLGetVirtualScreen",
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| 394 | "CGLSetOption",
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| 395 | "CGLGetOption",
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| 396 | "CGLGetVersion",
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| 397 | "CGLErrorString",
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| 398 | "CGLSetSurface",
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| 399 | "CGLGetSurface",
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| 400 | "CGLUpdateContext",
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| 401 | "glGetString"
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| 402 | ]
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| 403 | useful_glx_functions = [
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| 404 | "glXGetConfig",
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| 405 | "glXQueryExtension",
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| 406 | "glXQueryVersion",
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| 407 | "glXQueryExtensionsString",
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| 408 | "glXChooseVisual",
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| 409 | "glXCreateContext",
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| 410 | "glXDestroyContext",
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| 411 | "glXUseXFont",
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| 412 | "glXIsDirect",
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| 413 | "glXMakeCurrent",
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| 414 | "glGetString",
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| 415 | "glXSwapBuffers",
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| 416 | "glXGetCurrentDisplay",
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| 417 | "glXGetCurrentContext",
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| 418 | "glXGetClientString",
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| 419 | "glXWaitGL",
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| 420 | "glXWaitX",
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| 421 | "glXCopyContext"
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| 422 | ]
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| 423 | possibly_useful_glx_functions = [
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| 424 | "glXGetProcAddressARB",
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| 425 | "glXJoinSwapGroupNV",
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| 426 | "glXBindSwapBarrierNV",
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| 427 | "glXQuerySwapGroupNV",
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| 428 | "glXQueryMaxSwapGroupsNV",
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| 429 | "glXQueryFrameCountNV",
|
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| 430 | "glXResetFrameCountNV",
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| 431 | "glXChooseFBConfig",
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| 432 | "glXGetFBConfigs",
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| 433 | "glXGetFBConfigAttrib",
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| 434 | "glXGetVisualFromFBConfig",
|
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| 435 | "glXCreateNewContext",
|
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| 436 | "glXCreatePbuffer",
|
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| 437 | "glXDestroyPbuffer",
|
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| 438 | "glXQueryContext",
|
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| 439 | "glXQueryDrawable",
|
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| 440 | "glXMakeContextCurrent"
|
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| 441 | ]
|
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| 442 |
|
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| 443 | print '#ifdef WINDOWS'
|
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| 444 |
|
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| 445 | for fun in useful_wgl_functions:
|
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| 446 | print '\tinterface->%s = (%sFunc_t) crDLLGetNoError( glDll, "%s" );' % (fun,fun,fun)
|
|---|
| 447 |
|
|---|
| 448 | print '#elif defined(DARWIN)'
|
|---|
| 449 | for fun in useful_agl_functions:
|
|---|
| 450 | print '\tinterface->%s = (%sFunc_t) crDLLGetNoError( aglDll, "%s" );' % (fun,fun,fun)
|
|---|
| 451 |
|
|---|
| 452 | for fun in useful_cgl_functions:
|
|---|
| 453 | print '\tinterface->%s = (%sFunc_t) crDLLGetNoError( cglDll, "%s" );' % (fun, fun,fun)
|
|---|
| 454 |
|
|---|
| 455 | for fun in in_gl_functions:
|
|---|
| 456 | print '\tinterface->%s = (%sFunc_t) crDLLGetNoError( glDll, "%s" );' % (fun, fun,fun)
|
|---|
| 457 |
|
|---|
| 458 | print '#else'
|
|---|
| 459 | print '\t/* GLX */'
|
|---|
| 460 |
|
|---|
| 461 | # XXX merge these loops?
|
|---|
| 462 | for fun in useful_glx_functions:
|
|---|
| 463 | print '\tinterface->%s = (%sFunc_t) crDLLGetNoError( glDll, "%s" );' % (fun, fun, fun)
|
|---|
| 464 | for fun in possibly_useful_glx_functions:
|
|---|
| 465 | print '\tinterface->%s = (%sFunc_t) crDLLGetNoError( glDll, "%s" );' % (fun, fun, fun)
|
|---|
| 466 | print '#endif'
|
|---|
| 467 |
|
|---|
| 468 | print """
|
|---|
| 469 | if (!entry)
|
|---|
| 470 | return 1; /* token value */
|
|---|
| 471 |
|
|---|
| 472 | for (i = 0; coreFunctions[i]; i++) {
|
|---|
| 473 | const char *name = coreFunctions[i];
|
|---|
| 474 | if (fillin(entry, name + 2, crDLLGetNoError(glDll, name)))
|
|---|
| 475 | entry++;
|
|---|
| 476 | else
|
|---|
| 477 | crDebug("glLoader: NULL function %s", name);
|
|---|
| 478 | }
|
|---|
| 479 |
|
|---|
| 480 | /* end of table markers */
|
|---|
| 481 | entry->name = NULL;
|
|---|
| 482 | entry->fn = NULL;
|
|---|
| 483 | return entry - table; /* number of entries filled */
|
|---|
| 484 | }
|
|---|
| 485 |
|
|---|
| 486 |
|
|---|
| 487 | /*
|
|---|
| 488 | * Fill in table[] with all the OpenGL extension functions that we're
|
|---|
| 489 | * interested in.
|
|---|
| 490 | */
|
|---|
| 491 | int
|
|---|
| 492 | crLoadOpenGLExtensions( const crOpenGLInterface *interface, SPUNamedFunctionTable table[] )
|
|---|
| 493 | {
|
|---|
| 494 | struct extfunc {
|
|---|
| 495 | const char *funcName;
|
|---|
| 496 | const char *aliasName;
|
|---|
| 497 | SPUGenericFunction nopFunction;
|
|---|
| 498 | };
|
|---|
| 499 | static const struct extfunc functions[] = {
|
|---|
| 500 | """
|
|---|
| 501 |
|
|---|
| 502 | for func_name in keys:
|
|---|
| 503 | if IsExtensionFunc(func_name):
|
|---|
| 504 | if apiutil.Category(func_name) == "Chromium":
|
|---|
| 505 | prefix = "cr"
|
|---|
| 506 | else:
|
|---|
| 507 | prefix = "gl"
|
|---|
| 508 | s = '\t\t{ "' + prefix + func_name + '", '
|
|---|
| 509 | a = apiutil.ReverseAlias(func_name)
|
|---|
| 510 | if a:
|
|---|
| 511 | s += '"' + prefix + a + '", '
|
|---|
| 512 | else:
|
|---|
| 513 | s += 'NULL, '
|
|---|
| 514 | s += '(SPUGenericFunction) Nop' + func_name + ' },'
|
|---|
| 515 | print s
|
|---|
| 516 |
|
|---|
| 517 | print """
|
|---|
| 518 | { NULL, NULL, NULL}
|
|---|
| 519 | };
|
|---|
| 520 | const struct extfunc *func;
|
|---|
| 521 | SPUNamedFunctionTable *entry = table;
|
|---|
| 522 |
|
|---|
| 523 | #ifdef WINDOWS
|
|---|
| 524 | if (interface->wglGetProcAddress == NULL)
|
|---|
| 525 | crWarning("Unable to find wglGetProcAddress() in system GL library");
|
|---|
| 526 | #elif !defined(DARWIN)
|
|---|
| 527 | if (interface->glXGetProcAddressARB == NULL)
|
|---|
| 528 | crWarning("Unable to find glXGetProcAddressARB() in system GL library");
|
|---|
| 529 | #endif
|
|---|
| 530 |
|
|---|
| 531 | for (func = functions; func->funcName; func++) {
|
|---|
| 532 | SPUGenericFunction f = findExtFunction(interface, func->funcName);
|
|---|
| 533 | if (!f && func->aliasName) {
|
|---|
| 534 | f = findExtFunction(interface, func->aliasName);
|
|---|
| 535 | }
|
|---|
| 536 | if (!f) {
|
|---|
| 537 | f = func->nopFunction;
|
|---|
| 538 | }
|
|---|
| 539 | (void) fillin(entry, func->funcName + 2 , f); /* +2 to skip "gl" */
|
|---|
| 540 | entry++;
|
|---|
| 541 | }
|
|---|
| 542 |
|
|---|
| 543 | /* end of list */
|
|---|
| 544 | entry->name = NULL;
|
|---|
| 545 | entry->fn = NULL;
|
|---|
| 546 | return entry - table; /* number of entries filled */
|
|---|
| 547 | }
|
|---|
| 548 | """
|
|---|
| 549 |
|
|---|
| 550 |
|
|---|
| 551 | print """
|
|---|
| 552 |
|
|---|
| 553 | #ifdef USE_OSMESA
|
|---|
| 554 | int crLoadOSMesa( OSMesaContext (**createContext)( GLenum format, OSMesaContext sharelist ),
|
|---|
| 555 | GLboolean (**makeCurrent)( OSMesaContext ctx, GLubyte *buffer,
|
|---|
| 556 | GLenum type, GLsizei width, GLsizei height ),
|
|---|
| 557 | void (**destroyContext)( OSMesaContext ctx ))
|
|---|
| 558 | {
|
|---|
| 559 | static CRDLL *osMesaDll = NULL;
|
|---|
| 560 |
|
|---|
| 561 | const char *env_syspath = crGetenv( "CR_SYSTEM_GL_PATH" );
|
|---|
| 562 |
|
|---|
| 563 | crDebug( "Looking for the system's OSMesa library..." );
|
|---|
| 564 | osMesaDll = __findSystemLib( env_syspath, "libOSMesa.so" );
|
|---|
| 565 | if (!osMesaDll)
|
|---|
| 566 | {
|
|---|
| 567 | crError("Unable to find system OSMesa!");
|
|---|
| 568 | return 0;
|
|---|
| 569 | }
|
|---|
| 570 |
|
|---|
| 571 | crDebug( "Found it in %s.", !env_syspath ? "default path" : env_syspath );
|
|---|
| 572 |
|
|---|
| 573 | *createContext = (OSMesaContext (*) ( GLenum format, OSMesaContext sharelist ))
|
|---|
| 574 | crDLLGetNoError( osMesaDll, "OSMesaCreateContext" );
|
|---|
| 575 |
|
|---|
| 576 | *makeCurrent = (GLboolean (*) ( OSMesaContext ctx, GLubyte *buffer,
|
|---|
| 577 | GLenum type, GLsizei width, GLsizei height ))
|
|---|
| 578 | crDLLGetNoError( osMesaDll, "OSMesaMakeCurrent" );
|
|---|
| 579 |
|
|---|
| 580 | *destroyContext = (void (*) ( OSMesaContext ctx))
|
|---|
| 581 | crDLLGetNoError( osMesaDll, "OSMesaDestroyContext" );
|
|---|
| 582 |
|
|---|
| 583 | return 1;
|
|---|
| 584 | }
|
|---|
| 585 | #endif
|
|---|
| 586 |
|
|---|
| 587 | """
|
|---|
| 588 |
|
|---|
