| /* | |
| * Copyright (c) 2004, 2012, Oracle and/or its affiliates. All rights reserved. | |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. | |
| * | |
| * This code is free software; you can redistribute it and/or modify it | |
| * under the terms of the GNU General Public License version 2 only, as | |
| * published by the Free Software Foundation. Oracle designates this | |
| * particular file as subject to the "Classpath" exception as provided | |
| * by Oracle in the LICENSE file that accompanied this code. | |
| * | |
| * This code is distributed in the hope that it will be useful, but WITHOUT | |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| * version 2 for more details (a copy is included in the LICENSE file that | |
| * accompanied this code). | |
| * | |
| * You should have received a copy of the GNU General Public License version | |
| * 2 along with this work; if not, write to the Free Software Foundation, | |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| * | |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA | |
| * or visit www.oracle.com if you need additional information or have any | |
| * questions. | |
| */ | |
| #ifndef OGLFuncs_md_h_Included | |
| #define OGLFuncs_md_h_Included | |
| #include <stdlib.h> | |
| #ifndef MACOSX | |
| #include <dlfcn.h> | |
| #endif | |
| #include "jvm_md.h" | |
| #include "J2D_GL/glx.h" | |
| #include "OGLFuncMacros.h" | |
| /** | |
| * GLX 1.2 functions | |
| */ | |
| typedef void (GLAPIENTRY *glXDestroyContextType)(Display *dpy, GLXContext ctx); | |
| typedef GLXContext (GLAPIENTRY *glXGetCurrentContextType)(void); | |
| typedef GLXDrawable (GLAPIENTRY *glXGetCurrentDrawableType)(void); | |
| typedef Bool (GLAPIENTRY *glXIsDirectType)(Display *dpy, GLXContext ctx); | |
| typedef Bool (GLAPIENTRY *glXQueryExtensionType)(Display *dpy, int *errorBase, int *eventBase); | |
| typedef Bool (GLAPIENTRY *glXQueryVersionType)(Display *dpy, int *major, int *minor); | |
| typedef void (GLAPIENTRY *glXSwapBuffersType)(Display *dpy, GLXDrawable drawable); | |
| typedef const char * (GLAPIENTRY *glXGetClientStringType)(Display *dpy, int name); | |
| typedef const char * (GLAPIENTRY *glXQueryServerStringType)(Display *dpy, int screen, int name); | |
| typedef const char * (GLAPIENTRY *glXQueryExtensionsStringType)(Display *dpy, int screen); | |
| typedef void (GLAPIENTRY *glXWaitGLType)(void); | |
| /** | |
| * GLX 1.3 functions | |
| */ | |
| typedef GLXFBConfig * (GLAPIENTRY *glXGetFBConfigsType)(Display *dpy, int screen, int *nelements); | |
| typedef GLXFBConfig * (GLAPIENTRY *glXChooseFBConfigType)(Display *dpy, int screen, const int *attrib_list, int *nelements); | |
| typedef int (GLAPIENTRY *glXGetFBConfigAttribType)(Display *dpy, GLXFBConfig config, int attribute, int *value); | |
| typedef XVisualInfo * (GLAPIENTRY *glXGetVisualFromFBConfigType)(Display *dpy, GLXFBConfig config); | |
| typedef GLXWindow (GLAPIENTRY *glXCreateWindowType)(Display *dpy, GLXFBConfig config, Window win, const int *attrib_list); | |
| typedef void (GLAPIENTRY *glXDestroyWindowType)(Display *dpy, GLXWindow win); | |
| typedef GLXPbuffer (GLAPIENTRY *glXCreatePbufferType)(Display *dpy, GLXFBConfig config, const int *attrib_list); | |
| typedef void (GLAPIENTRY *glXDestroyPbufferType)(Display *dpy, GLXPbuffer pbuffer); | |
| typedef void (GLAPIENTRY *glXQueryDrawableType)(Display *dpy, GLXDrawable draw, int attribute, unsigned int *value); | |
| typedef GLXContext (GLAPIENTRY *glXCreateNewContextType)(Display *dpy, GLXFBConfig config, int render_type, GLXContext share_list, Bool direct); | |
| typedef Bool (GLAPIENTRY *glXMakeContextCurrentType)(Display *dpy, GLXDrawable draw, GLXDrawable read, GLXContext ctx); | |
| typedef GLXDrawable (GLAPIENTRY *glXGetCurrentReadDrawableType)(void); | |
| typedef int (GLAPIENTRY *glXQueryContextType)(Display *dpy, GLXContext ctx, int attribute, int *value); | |
| typedef void (GLAPIENTRY *glXSelectEventType)(Display *dpy, GLXDrawable draw, unsigned long event_mask); | |
| typedef void (GLAPIENTRY *glXGetSelectedEventType)(Display *dpy, GLXDrawable draw, unsigned long *event_mask); | |
| /** | |
| * GLX extension functions | |
| */ | |
| typedef void * (GLAPIENTRY *glXGetProcAddressType)(const char *); | |
| /* | |
| * Note: Historically we have used dlopen/dlsym() to load function pointers | |
| * from libgl.so, and things have worked fine. However, we have run into at | |
| * least one case (on ATI's Linux drivers) where dlsym() will return NULL | |
| * when trying to load functions from the GL_ARB_fragment_shader extension. | |
| * Plausibly this is a bug in their drivers (other extension functions load | |
| * just fine on those same drivers), but for a number of years there has been | |
| * a glXGetProcAddressARB() extension available that is intended to be the | |
| * primary means for an application to load extension functions in a reliable | |
| * manner. So while dlsym() will return NULL for those shader-related | |
| * functions, glXGetProcAddressARB() works just fine. | |
| * | |
| * I haven't used the glXGetProcAddress() approach in the past because it | |
| * seemed unnecessary (i.e. dlsym() was working fine), but upon further | |
| * reading I think we should use glXGetProcAddress() in favor of dlsym(), | |
| * not only to work around this "bug", but also to be safer going forward. | |
| * | |
| * Just to complicate matters, glXGetProcAddress() was proposed to be added | |
| * into the GLX 1.4 spec, which is still (as yet) unfinalized. Sun's OGL 1.3 | |
| * implementation reports its GLX version as 1.4, and therefore includes | |
| * the glXGetProcAddress() entrypoint, but does not include | |
| * GLX_ARB_get_proc_address in its extension string nor does it export the | |
| * glXGetProcAddressARB() entrypoint. On the other hand, ATI's Linux drivers | |
| * (as well as Nvidia's Linux and Solaris drivers) currently report their | |
| * GLX version as 1.3, but they do export the glXGetProcAddressARB() | |
| * entrypoint and its associated extension string. So to make this work | |
| * everywhere, we first try to load the glXGetProcAddress() entrypoint, | |
| * failing that we try the glXGetProcAddressARB() entrypoint, and if that | |
| * fails too, then we close libGL.so and do not bother trying to initialize | |
| * the rest of the OGL pipeline. | |
| */ | |
| #define OGL_LIB_HANDLE pLibGL | |
| #define OGL_DECLARE_LIB_HANDLE() \ | |
| static glXGetProcAddressType j2d_glXGetProcAddress; \ | |
| static void *OGL_LIB_HANDLE = NULL | |
| #define OGL_LIB_IS_UNINITIALIZED() \ | |
| (OGL_LIB_HANDLE == NULL) | |
| #define OGL_OPEN_LIB() \ | |
| do { \ | |
| { \ | |
| char *libGLPath = getenv("J2D_ALT_LIBGL_PATH"); \ | |
| if (libGLPath == NULL) { \ | |
| libGLPath = VERSIONED_JNI_LIB_NAME("GL", "1"); \ | |
| } \ | |
| OGL_LIB_HANDLE = dlopen(libGLPath, RTLD_LAZY | RTLD_LOCAL); \ | |
| } \ | |
| if (OGL_LIB_HANDLE) { \ | |
| j2d_glXGetProcAddress = (glXGetProcAddressType) \ | |
| dlsym(OGL_LIB_HANDLE, "glXGetProcAddress"); \ | |
| if (j2d_glXGetProcAddress == NULL) { \ | |
| j2d_glXGetProcAddress = (glXGetProcAddressType) \ | |
| dlsym(OGL_LIB_HANDLE, "glXGetProcAddressARB"); \ | |
| if (j2d_glXGetProcAddress == NULL) { \ | |
| dlclose(OGL_LIB_HANDLE); \ | |
| OGL_LIB_HANDLE = NULL; \ | |
| } \ | |
| } \ | |
| } \ | |
| } while (0) | |
| #define OGL_CLOSE_LIB() \ | |
| dlclose(OGL_LIB_HANDLE) | |
| #define OGL_GET_PROC_ADDRESS(f) \ | |
| j2d_glXGetProcAddress(#f) | |
| #define OGL_GET_EXT_PROC_ADDRESS(f) \ | |
| OGL_GET_PROC_ADDRESS(f) | |
| #define OGL_EXPRESS_PLATFORM_FUNCS(action) \ | |
| OGL_##action##_FUNC(glXDestroyContext); \ | |
| OGL_##action##_FUNC(glXGetCurrentContext); \ | |
| OGL_##action##_FUNC(glXGetCurrentDrawable); \ | |
| OGL_##action##_FUNC(glXIsDirect); \ | |
| OGL_##action##_FUNC(glXQueryExtension); \ | |
| OGL_##action##_FUNC(glXQueryVersion); \ | |
| OGL_##action##_FUNC(glXSwapBuffers); \ | |
| OGL_##action##_FUNC(glXGetClientString); \ | |
| OGL_##action##_FUNC(glXQueryServerString); \ | |
| OGL_##action##_FUNC(glXQueryExtensionsString); \ | |
| OGL_##action##_FUNC(glXWaitGL); \ | |
| OGL_##action##_FUNC(glXGetFBConfigs); \ | |
| OGL_##action##_FUNC(glXChooseFBConfig); \ | |
| OGL_##action##_FUNC(glXGetFBConfigAttrib); \ | |
| OGL_##action##_FUNC(glXGetVisualFromFBConfig); \ | |
| OGL_##action##_FUNC(glXCreateWindow); \ | |
| OGL_##action##_FUNC(glXDestroyWindow); \ | |
| OGL_##action##_FUNC(glXCreatePbuffer); \ | |
| OGL_##action##_FUNC(glXDestroyPbuffer); \ | |
| OGL_##action##_FUNC(glXQueryDrawable); \ | |
| OGL_##action##_FUNC(glXCreateNewContext); \ | |
| OGL_##action##_FUNC(glXMakeContextCurrent); \ | |
| OGL_##action##_FUNC(glXGetCurrentReadDrawable); \ | |
| OGL_##action##_FUNC(glXQueryContext); \ | |
| OGL_##action##_FUNC(glXSelectEvent); \ | |
| OGL_##action##_FUNC(glXGetSelectedEvent); | |
| #define OGL_EXPRESS_PLATFORM_EXT_FUNCS(action) | |
| #endif /* OGLFuncs_md_h_Included */ |