1 files changed, 131 insertions, 0 deletions
diff --git a/src/gallium/state_trackers/egl/common/egl_st.c b/src/gallium/state_trackers/egl/common/egl_st.c
new file mode 100644
index 0000000000..a88ff911cd
--- /dev/null
+++ b/src/gallium/state_trackers/egl/common/egl_st.c
@@ -0,0 +1,131 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  7.8
+ *
+ * Copyright (C) 2009-2010 Chia-I Wu <olv@0xlab.org>
+ *
+ * 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
+ * BRIAN PAUL 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 <dlfcn.h>
+#include "pipe/p_compiler.h"
+#include "util/u_memory.h"
+#include "egllog.h"
+#include "EGL/egl.h" /* for EGL_api_BIT */
+
+#include "egl_st.h"
+
+#ifndef HAVE_DLADDR
+#define HAVE_DLADDR 1
+#endif
+
+#if HAVE_DLADDR
+
+static const char *
+egl_g3d_st_names[] = {
+#define ST_PUBLIC(name, ...) #name,
+#include "st_public_tmp.h"
+   NULL
+};
+
+static boolean
+egl_g3d_fill_st(struct egl_g3d_st *stapi, void *sym)
+{
+   st_proc *procs = (st_proc *) stapi;
+   void *handle;
+   Dl_info info;
+   const char **name;
+
+   if (!dladdr(sym, &info))
+      return FALSE;
+   handle = dlopen(info.dli_fname, RTLD_LAZY | RTLD_LOCAL | RTLD_NODELETE);
+   if (!handle)
+      return FALSE;
+
+   for (name = egl_g3d_st_names; *name; name++) {
+      st_proc proc = (st_proc) dlsym(handle, *name);
+      if (!proc) {
+         _eglLog(_EGL_WARNING, "%s is missing in %s", *name, info.dli_fname);
+         memset(stapi, 0, sizeof(*stapi));
+         dlclose(handle);
+         return FALSE;
+      }
+      *procs++ = proc;
+   }
+
+   dlclose(handle);
+   return TRUE;
+}
+
+#else /* HAVE_DLADDR */
+
+static boolean
+egl_g3d_fill_st(struct egl_g3d_st *stapi, void *sym)
+{
+#define ST_PUBLIC(name, ...) stapi->name = name;
+#include "st_public_tmp.h"
+   return TRUE;
+}
+
+#endif /* HAVE_DLADDR */
+
+static boolean
+egl_g3d_init_st(struct egl_g3d_st *stapi, const char *api)
+{
+   void *handle, *sym;
+   boolean res = FALSE;
+
+   /* already initialized */
+   if (stapi->st_notify_swapbuffers != NULL)
+      return TRUE;
+
+   handle = dlopen(NULL, RTLD_LAZY | RTLD_LOCAL);
+   if (!handle)
+      return FALSE;
+
+   sym = dlsym(handle, api);
+   if (sym && egl_g3d_fill_st(stapi, sym))
+      res = TRUE;
+
+   dlclose(handle);
+   return res;
+}
+
+static struct {
+   const char *symbol;
+   EGLint api_bit;
+} egl_g3d_st_info[NUM_EGL_G3D_STS] = {
+   { "st_api_OpenGL_ES1",  EGL_OPENGL_ES_BIT },
+   { "st_api_OpenVG",      EGL_OPENVG_BIT },
+   { "st_api_OpenGL_ES2",  EGL_OPENGL_ES2_BIT },
+   { "st_api_OpenGL",      EGL_OPENGL_BIT },
+};
+
+const struct egl_g3d_st *
+egl_g3d_get_st(enum egl_g3d_st_api api)
+{
+   static struct egl_g3d_st all_trackers[NUM_EGL_G3D_STS];
+
+   if (egl_g3d_init_st(&all_trackers[api], egl_g3d_st_info[api].symbol)) {
+      all_trackers[api].api_bit = egl_g3d_st_info[api].api_bit;
+      return &all_trackers[api];
+   }
+   else {
+      return NULL;
+   }
+}